42540_30a - CHAPTER 30 THERMOPHYSICAL PROPERTIES OF...

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Unformatted text preview: CHAPTER 30 THERMOPHYSICAL PROPERTIES OF REFRIGERANTS HIS chapter presents data for thermodynamic and transport properties of refrigerants, arranged for the occasional user. The refrigerants have a thermodynamic property chart on pressureenthalpy coordinates with an abbreviated set of tabular data for saturated liquid and vapor on the facing page. In addition, tabular data in the superheated vapor region are given for R-134a to assist students working on compression cycle examples. For each cryogenic fluid, a second table of properties is provided for vapor at a pressure of one standard atmosphere; these data are needed when such gases are used in heat transfer or purge gas applications. For zeotropic blends, including R-729 (air), tables are incremented in pressure, with properties given for liquid on the bubble line and vapor on the dew line. This arrangement is used because pressure is more commonly measured in the field while servicing equipment; it also highlights the difference between bubble and dew-point temperatures (the “temperature glide” experienced with blends). Refrigerant Halocarbon Refrigerants Methane Series R-12 (dichlorodifluoromethane). . . . . . . . . . . . . . . . . . . R-22 (chlorodifluoromethane) . . . . . . . . . . . . . . . . . . . . R-23 (trifluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . R-32 (difluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . Ethane Series R-123 (2,2-dichloro-1,1,1-trifluoroethane) . . . . . . . . . . 30.10 R-124 (2-chloro-1,1,1,2-tetrafluoroethane) . . . . . . . . . . 30.12 R-125 (pentafluoroethane) . . . . . . . . . . . . . . . . . . . . . . . 30.14 R-134a (1,1,1,2-tetrafluoroethane) . . . . . . . . . . . . . . . . . 30.16 R-143a (1,1,1-trifluoroethane) . . . . . . . . . . . . . . . . . . . . 30.20 R-152a (1,1-difluoroethane) . . . . . . . . . . . . . . . . . . . . . . 30.22 Propane Series R-245fa (1,1,1,3,3-pentafluoropropane). . . . . . . . . . . . . 30.24 Zeotropic Blends (% by mass) R-404A [R-125/143a/134a (44/52/4)] . . . . . . . . . . . . . . 30.26 R-407C [R-32/125/134a (23/25/52)] . . . . . . . . . . . . . . . 30.28 R-410A [R-32/125 (50/50)] . . . . . . . . . . . . . . . . . . . . . . 30.30 Azeotropic Blends R-507A [R-125/143a (50/50)] . . . . . . . . . . . . . . . . . . . . 30.32 Absorption Solutions Inorganic Refrigerants R-717 (ammonia) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.34 Ammonia/Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.68 Water/Lithium Bromide . . . . . . . . . . . . . . . . . . . . . . . . . 30.70 Cryogenic Fluids R-702 (normal hydrogen) . . . . . . . . . . . . . . . . . . . . . . . . 30.54 R-702p (parahydrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . 30.56 R-704 (helium) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.58 R-728 (nitrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.60 R-729 (air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.62 R-732 (oxygen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.64 R-740 (argon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.66 30.2 30.4 30.6 30.8 Hydrocarbon Refrigerants R-50 (methane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.40 R-170 (ethane). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.42 R-290 (propane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.44 R-600 (n-butane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.46 R-600a (isobutane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.48 R-1150 (ethylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.50 R-1270 (propylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.52 Page T Most CFC refrigerants have been deleted. Tables for R-11, R-13, R-113, R-114, R-141b, R-142b, R-500, R-502, R-503, and R-720 (neon) may be found in the 1997 ASHRAE Handbook—Fundamentals. R-12 has been retained to assist in making comparisons. Revised formulations have been used for many refrigerants; these conform to international standards, where applicable. Thermodynamic properties of R-12, R-22, R-32, R-123, R-125, R-134a, R-143a, R-152a, R-717 (ammonia), and R-744 (carbon dioxide) and refrigerant blends R-404A, R-407C, R-410A, and R-507 conform to ISO/DIS Draft Standard 17584, Refrigerant Properties. Reference states used for most refrigerants correspond to the American convention of 0 Btu/lb for enthalpy and 0 Btu/lb·°F for entropy for saturated liquid at –40°F. Exceptions are water and fluids with very low critical temperatures (e.g., ethylene, cryogens). These data are intended to help engineers make preliminary comparisons among unfamiliar fluids. For greater detail and a wider range of data, see the sources in the References. Refrigerant Page R-718 (water/steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.36 R-744 (carbon dioxide) . . . . . . . . . . . . . . . . . . . . . . . . . . 30.38 The preparation of this chapter is assigned to TC 3.1, Refrigerants and Secondary Coolants. 30.1 Pressure 30.2 2009 ASHRAE Handbook—Fundamentals Fig. 1 Pressure-Enthalpy Diagram for Refrigerant 12 Thermophysical Properties of Refrigerants Refrigerant 12 (Dichlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 60.979 62.044 63.125 64.219 65.326 66.444 67.571 68.705 69.274 69.844 70.415 7 0.986 71.558 72.130 72.702 73.273 73.844 74.414 74.982 75.373 75.549 76.115 76.678 77.239 77.797 78.352 78.904 79.453 79.998 80.539 81.075 81.606 82.133 82.654 83.169 83.678 84.180 84.675 85.163 85.642 86.113 86.576 87.028 87.470 87.902 88.322 88.729 89.123 89.503 89.868 90.216 90.546 90.857 91.148 91.415 91.657 91.872 92.056 92.206 92.318 92.385 92.403 92.361 92.250 92.054 91.317 89.806 86.082 79.118 Entropy, Btu/lb·°F Liquid –0.06101 –0.05479 –0.04873 –0.04284 –0.03708 –0.03146 –0.02596 –0.02057 –0.01791 –0.01529 –0.01268 –0.01010 –0.00754 –0.00501 –0.00249 0.00000 0.00247 0.00493 0.00736 0.00903 0.00978 0.01218 0.01457 0.01693 0.01929 0.02162 0.02395 0.02625 0.02855 0.03083 0.03310 0.03536 0.03761 0.03984 0.04207 0.04428 0.04649 0.04869 0.05088 0.05306 0.05524 0.05740 0.05957 0.06173 0.06388 0.06603 0.06818 0.07032 0.07247 0.07461 0.07676 0.07890 0.08106 0.08321 0.08538 0.08755 0.08973 0.09193 0.09415 0.09638 0.09865 0.10094 0.10327 0.10565 0.10810 0.11323 0.11896 0.12659 0.13637 Vapor 0.20738 0.20241 0.19798 0.19402 0.19050 0.18735 0.18455 0.18206 0.18092 0.17985 0.17884 0.17788 0.17699 0.17614 0.17535 0.17460 0.17389 0.17323 0.17261 0.17221 0.17203 0.17148 0.17097 0.17048 0.17003 0.16960 0.16920 0.16883 0.16847 0.16814 0.16783 0.16754 0.16726 0.16700 0.16675 0.16652 0.16630 0.16608 0.16588 0.16568 0.16549 0.16531 0.16512 0.16494 0.16477 0.16459 0.16440 0.16422 0.16403 0.16383 0.16362 0.16341 0.16317 0.16293 0.16266 0.16237 0.16206 0.16171 0.16133 0.16091 0.16044 0.15991 0.15931 0.15863 0.15784 0.15582 0.15277 0.14664 0.13637 Specific Heat cp , Btu/lb·°F Liquid Vapor 0.1955 0.1962 0.1970 0.1979 0.1989 0.2000 0.2013 0.2026 0.2033 0.2040 0.2047 0.2055 0.2062 0.2070 0.2078 0.2087 0.2095 0.2104 0.2113 0.2119 0.2122 0.2131 0.2141 0.2151 0.2161 0.2171 0.2182 0.2193 0.2204 0.2216 0.2228 0.2240 0.2253 0.2266 0.2279 0.2294 0.2308 0.2323 0.2339 0.2356 0.2373 0.2391 0.2410 0.2430 0.2452 0.2474 0.2498 0.2523 0.2551 0.2580 0.2611 0.2645 0.2683 0.2724 0.2769 0.2819 0.2875 0.2938 0.3011 0.3094 0.3192 0.3309 0.3450 0.3625 0.3848 0.4555 0.6261 1.866 cp /cv Vapor Vel. of Sound, ft/s 3412 3329 3247 3166 3085 3005 2926 2848 2809 2770 2732 2693 2655 2617 2579 2541 2503 2466 2428 2403 2391 2354 2317 2279 2243 2206 2169 2132 2095 2059 2022 1986 1949 1913 1876 1840 1803 1766 1730 1693 1656 1619 1582 1545 1508 1470 1433 1395 1357 1318 1279 1240 1201 1161 1120 1079 1037 995 952 908 864 818 772 724 676 575 468 345 0 387.7 393.0 398.3 403.3 408.3 413.0 417.5 421.8 423.8 425.8 427.8 429.6 431.4 433.1 434.7 436.3 437.8 439.2 440.5 441.3 441.7 442.8 443.9 444.8 445.6 446.4 447.0 447.5 447.9 448.2 448.4 448.5 448.4 448.3 448.0 447.5 447.0 446.3 445.4 444.5 443.3 442.0 440.6 439.0 437.3 435.4 433.3 431.0 428.5 425.9 423.0 420.0 416.7 413.3 409.6 405.6 401.4 397.0 392.3 387.3 382.0 376.4 370.5 364.2 357.7 343.4 327.4 308.3 0.0 Viscosity, lbm /ft·h 2.493 2.212 1.981 1.789 1.626 1.487 1.366 1.261 1.213 1.167 1.125 1.084 1.046 1.010 0.976 0.943 0.912 0.882 0.854 0.835 0.827 0.801 0.776 0.752 0.729 0.707 0.686 0.666 0.646 0.627 0.609 0.591 0.574 0.557 0.541 0.526 0.511 0.496 0.482 0.468 0.454 0.441 0.428 0.415 0.403 0.391 0.379 0.367 0.356 0.345 0.334 0.323 0.312 0.302 0.291 0.281 0.271 0.261 0.251 0.240 0.230 0.220 0.210 0.200 0.189 0.167 0.143 0.112 — 0.0163 0.0168 0.0174 0.0179 0.0184 0.0190 0.0195 0.0200 0.0203 0.0206 0.0208 0.0211 0.0214 0.0216 0.0219 0.0222 0.0224 0.0227 0.0229 0.0231 0.0232 0.0235 0.0237 0.0240 0.0243 0.0245 0.0248 0.0251 0.0253 0.0256 0.0259 0.0261 0.0264 0.0267 0.0270 0.0272 0.0275 0.0278 0.0281 0.0284 0.0287 0.0290 0.0293 0.0296 0.0299 0.0302 0.0306 0.0309 0.0313 0.0316 0.0320 0.0324 0.0328 0.0333 0.0337 0.0342 0.0347 0.0352 0.0358 0.0364 0.0371 0.0379 0.0387 0.0396 0.0407 0.0434 0.0475 0.0568 — 30.3 Liquid Vapor Liquid Vapor Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0678 0.0663 0.0647 0.0633 0.0618 0.0604 0.0590 0.0577 0.0570 0.0563 0.0557 0.0550 0.0544 0.0537 0.0531 0.0525 0.0518 0.0512 0.0506 0.0502 0.0500 0.0494 0.0488 0.0482 0.0476 0.0470 0.0464 0.0458 0.0452 0.0447 0.0441 0.0435 0.0429 0.0424 0.0418 0.0413 0.0407 0.0401 0.0396 0.0390 0.0385 0.0379 0.0374 0.0369 0.0363 0.0358 0.0352 0.0347 0.0341 0.0336 0.0331 0.0325 0.0320 0.0315 0.0309 0.0304 0.0298 0.0293 0.0288 0.0283 0.0278 0.0273 0.0268 0.0264 0.0261 0.0262 0.0291 0.0657 0.00244 0.00257 0.00270 0.00283 0.00296 0.00310 0.00323 0.00337 0.00344 0.00352 0.00359 0.00366 0.00373 0.00381 0.00388 0.00396 0.00403 0.00411 0.00418 0.00424 0.00426 0.00434 0.00442 0.00450 0.00458 0.00466 0.00474 0.00482 0.00491 0.00499 0.00508 0.00516 0.00525 0.00534 0.00543 0.00552 0.00562 0.00571 0.00581 0.00591 0.00601 0.00612 0.00623 0.00634 0.00645 0.00657 0.00670 0.00682 0.00696 0.00710 0.00724 0.00740 0.00756 0.00773 0.00792 0.00811 0.00833 0.00855 0.00880 0.00908 0.00938 0.00973 0.01012 0.01057 0.01109 0.01250 0.01489 0.02282 26.65 –150 25.77 –140 24.90 –130 24.03 –120 23.17 –110 22.32 –100 21.47 –90 20.63 –80 20.22 –75 19.80 –70 19.39 –65 18.98 –60 18.57 –55 18.16 –50 17.75 –45 17.35 –40 16.95 –35 16.55 –30 16.15 –25 15.88 –21.55 15.76 –20 15.36 –15 14.97 –10 14.58 –5 14.19 0 13.81 5 13.43 10 13.05 15 12.67 20 12.29 25 11.92 30 11.55 35 11.18 40 10.82 45 10.45 50 10.09 55 9.74 60 9.38 65 9.03 70 8.68 75 8.33 80 7.99 85 7.65 90 7.31 95 6.98 100 6.65 105 6.32 110 6.00 115 5.68 120 5.36 125 5.05 130 4.74 135 4.44 140 4.14 145 3.85 150 3.56 155 3.27 160 2.99 165 2.72 170 2.45 175 2.19 180 1.93 185 1.68 190 1.44 195 1.21 200 0.77 210 0.38 220 0.07 230 0.00 233.55 c Critical point –150 0.155 105.01 176.84 –22.133 –140 0.258 104.10 109.67 –20.175 –130 0.415 103.18 70.398 –18.209 –120 0.644 102.26 46.615 –16.234 –110 0.973 101.34 31.744 –14.250 –100 1.430 100.41 22.173 –12.255 –90 2.052 99.48 15.847 –10.248 –80 2.880 98.54 11.565 –8.228 –75 3.387 98.06 9.9506 –7.213 –70 3.963 97.59 8.6006 –6.194 –65 4.616 97.11 7.4658 –5.171 –60 5.353 96.63 96.63 –4.145 –55 6.181 96.14 5.6943 –3.115 –50 7.108 95.66 5.0014 –2.081 –45 8.144 8.144 4.4085 –1.043 –40 9.295 94.68 3.8992 0.000 –35 10.571 94.18 3.4599 1.047 –30 11.982 93.68 3.0797 2.098 –25 13.536 93.18 2.7494 3.154 –21.55b 14.696 92.83 2.5469 3.884 –20 15.244 92.67 2.4615 4.214 –15 17.115 92.16 2.2098 5.280 –10 19.159 91.65 1.9889 6.350 –5 21.388 91.13 1.7945 7.425 0 23.812 90.61 1.6230 8.505 5 26.442 90.08 1.4711 9.591 10 29.290 89.55 1.3364 10.682 15 32.365 89.02 1.2165 11.778 20 35.682 88.48 1.1095 12.880 25 39.250 87.93 1.0138 13.988 30 43.083 87.38 0.9281 15.102 35 47.192 86.82 0.8510 16.222 40 51.590 86.25 0.7816 17.348 45 56.289 85.68 0.7190 18.481 50 61.303 85.10 0.6624 19.621 55 66.643 84.52 0.6110 20.767 60 72.323 83.92 0.5645 21.921 65 78.357 83.32 0.5221 23.082 70 84.757 82.71 0.4835 24.251 75 91.536 82.10 0.4482 25.427 80 98.710 81.47 0.4159 26.612 85 106.29 80.83 0.3864 27.805 90 114.29 80.18 0.3593 29.007 95 122.73 79.52 0.3344 30.218 100 131.62 78.85 0.3114 31.439 105 140.97 78.16 0.2903 32.669 110 150.81 77.46 0.2707 33.911 115 161.13 76.75 0.2527 35.163 120 171.97 76.02 0.2359 36.427 125 183.33 75.28 0.2204 37.703 130 195.24 74.51 0.2060 38.992 135 207.70 73.73 0.1926 40.295 140 220.74 72.93 0.1801 41.613 145 234.37 72.10 0.1684 42.947 150 248.61 71.24 0.1575 44.298 155 263.47 70.36 0.1472 45.667 160 278.99 69.45 0.1377 47.056 165 295.17 68.50 0.1286 48.467 170 312.04 67.51 0.1202 49.903 175 329.62 66.47 0.1122 51.366 180 347.93 65.39 0.1046 52.859 185 367.00 64.24 0.0974 54.386 190 386.85 63.03 0.0906 55.954 195 407.52 61.73 0.0840 57.568 200 429.04 60.34 0.0778 59.237 210 474.80 57.15 0.0658 62.795 220 524.53 53.07 0.0540 66.829 230 579.05 46.36 0.0404 72.258 c 599.89 233.55 35.27 0.0284 79.118 *Temperatures on ITS-90 scale 0.1069 1.1831 0.1090 1.1795 0.1111 1.1764 0.1133 1.1736 0.1154 1.1711 0.1175 1.1691 0.1197 1.1675 0.1218 1.1663 0.1229 1.1659 0.1240 1.1655 0.1252 1.1653 0.1263 1.1653 0.1274 1.1653 0.1286 1.1654 0.1297 1.1657 0.1309 1.1662 0.1321 1.1667 0.1333 1.1674 0.1346 1.1683 0.1354 1.1690 0.1358 1.1693 0.1371 1.1705 0.1384 1.1718 0.1397 1.1733 0.1411 1.1750 0.1424 1.1769 0.1439 1.1790 0.1453 1.1813 0.1468 1.1838 0.1483 1.1866 0.1499 1.1896 0.1515 1.1929 0.1532 1.1965 0.1549 1.2004 0.1567 1.2047 0.1585 1.2093 0.1604 1.2143 0.1624 1.2197 0.1645 1.2256 0.1666 1.2319 0.1689 1.2389 0.1712 1.2464 0.1737 1.2546 0.1763 1.2635 0.1791 1.2733 0.1820 1.2839 0.1851 1.2956 0.1884 1.3085 0.1920 1.3226 0.1958 1.3383 0.2000 1.3556 0.2045 1.3750 0.2094 1.3966 0.2149 1.4210 0.2209 1.4486 0.2277 1.4800 0.2353 1.5161 0.2440 1.5578 0.2540 1.6065 0.2657 1.6642 0.2795 1.7333 0.2962 1.8175 0.3168 1.9220 0.3427 2.0549 0.3766 2.2291 0.4887 2.8082 0.7725 4.2679 2.734 14.143 boiling point b Normal Pressure 30.4 2009 ASHRAE Handbook—Fundamentals Fig. 2 Pressure-Enthalpy Diagram for Refrigerant 22 Thermophysical Properties of Refrigerants Refrigerant 22 (Chlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor –28.119 –25.583 –23.046 –20.509 –17.970 –15.427 –14.154 –12.880 –11.604 –10.326 –9.046 –7.763 –6.477 –5.189 –3.897 –2.602 –1.303 –0.381 0.000 1.308 2.620 3.937 5.260 6.588 7.923 9.263 10.610 11.964 13.325 14.694 16.070 17.455 18.848 20.250 21.662 23.083 24.514 25.956 27.409 28.874 30.350 31.839 33.342 34.859 36.391 37.938 39.502 41.084 42.686 44.308 45.952 47.621 49.316 51.041 52.798 54.591 56.425 58.305 60.240 62.237 64.309 66.474 68.757 71.196 73.859 76.875 80.593 91.208 87.566 88.729 89.899 91.074 92.252 93.430 94.018 94.605 95.191 95.775 96.357 96.937 97.514 98.087 98.657 99.224 99.786 100.181 100.343 100.896 101.443 101.984 102.519 103.048 103.570 104.085 104.591 105.090 105.580 106.061 106.532 106.994 107.445 107.884 108.313 108.729 109.132 109.521 109.897 110.257 110.602 110.929 111.239 111.530 111.801 112.050 112.276 112.478 112.653 112.799 112.914 112.996 113.040 113.043 113.000 112.907 112.756 112.539 112.247 111.866 111.378 110.760 109.976 108.972 107.654 105.835 103.010 91.208 Entropy, Btu/lb·°F Liquid –0.07757 –0.06951 –0.06170 –0.05412 –0.04675 –0.03959 –0.03608 –0.03261 –0.02918 –0.02580 –0.02245 –0.01915 –0.01587 –0.01264 –0.00943 –0.00626 –0.00311 –0.00091 0.00000 0.00309 0.00615 0.00918 0.01220 0.01519 0.01815 0.02110 0.02403 0.02694 0.02983 0.03270 0.03556 0.03841 0.04124 0.04406 0.04686 0.04966 0.05244 0.05522 0.05798 0.06074 0.06350 0.06625 0.06899 0.07173 0.07447 0.07721 0.07996 0.08270 0.08545 0.08821 0.09098 0.09376 0.09656 0.09937 0.10222 0.10509 0.10800 0.11096 0.11397 0.11705 0.12022 0.12350 0.12693 0.13056 0.13450 0.13893 0.14437 0.16012 Specific Heat cp , Vel. of Sound, Btu/lb·°F ft/s cp /cv Vapor Liquid Vapor Vapor Liquid Vapor 0.2536 0.2536 0.2536 0.2537 0.2540 0.2543 0.2546 0.2549 0.2552 0.2556 0.2561 0.2566 0.2571 0.2577 0.2583 0.2591 0.2598 0.2604 0.2606 0.2615 0.2625 0.2635 0.2645 0.2656 0.2668 0.2681 0.2694 0.2708 0.2722 0.2737 0.2753 0.2770 0.2787 0.2806 0.2825 0.2845 0.2866 0.2889 0.2913 0.2938 0.2964 0.2992 0.3022 0.3054 0.3089 0.3126 0.3166 0.3209 0.3257 0.3309 0.3367 0.3431 0.3504 0.3585 0.3679 0.3787 0.3913 0.4063 0.4243 0.4467 0.4750 0.5124 0.5641 0.6410 0.7681 1.020 1.778 0.1185 1.2437 0.1204 1.2404 0.1223 1.2375 0.1244 1.2350 0.1265 1.2330 0.1288 1.2315 0.1300 1.2310 0.1312 1.2307 0.1324 1.2305 0.1337 1.2304 0.1350 1.2305 0.1363 1.2308 0.1377 1.2313 0.1392 1.2320 0.1406 1.2328 0.1422 1.2339 0.1438 1.2352 0.1449 1.2362 0.1454 1.2367 0.1471 1.2384 0.1488 1.2404 0.1506 1.2426 0.1525 1.2451 0.1544 1.2479 0.1564 1.2510 0.1585 1.2544 0.1607 1.2581 0.1629 1.2622 0.1652 1.2666 0.1676 1.2714 0.1702 1.2767 0.1728 1.2824 0.1755 1.2886 0.1783 1.2953 0.1813 1.3026 0.1844 1.3105 0.1877 1.3191 0.1911 1.3284 0.1947 1.3385 0.1985 1.3495 0.2025 1.3615 0.2067 1.3746 0.2112 1.3889 0.2160 1.4046 0.2212 1.4218 0.2267 1.4407 0.2327 1.4616 0.2391 1.4849 0.2461 1.5107 0.2538 1.5396 0.2623 1.5722 0.2717 1.6090 0.2822 1.6509 0.2941 1.6990 0.3076 1.7548 0.3233 1.8201 0.3416 1.8976 0.3633 1.9907 0.3897 2.1047 0.4225 2.2474 0.4643 2.4310 0.5198 2.6759 0.5972 3.0184 0.7132 3.5317 0.9067 4.3857 1.295 6.090 2.472 11.190 boiling point 3716 3630 3544 3458 3373 3287 3245 3202 3160 3118 3075 3033 2990 2948 2906 2863 2821 2791 2778 2736 2694 2651 2609 2566 2524 2481 2438 2396 2353 2310 2268 2225 2182 2139 2096 2053 2010 1967 1924 1880 1836 1793 1749 1705 1660 1615 1570 1525 1479 1433 1387 1340 1292 1244 1195 1146 1095 1044 992 939 884 828 769 706 639 565 480 0 469.7 476.2 482.4 488.5 494.2 499.7 502.4 504.9 507.4 509.8 512.2 514.4 516.5 518.6 520.5 522.4 524.1 525.3 525.8 527.3 528.7 530.0 531.2 532.3 533.2 534.0 534.7 535.3 535.7 536.0 536.1 536.1 535.9 535.6 535.1 534.4 533.6 532.6 531.5 530.1 528.6 526.9 525.0 522.9 520.6 518.1 515.4 512.4 509.2 505.8 502.1 498.1 493.9 489.4 484.6 479.5 474.1 468.4 462.3 455.8 449.0 441.7 433.9 425.6 416.6 406.9 395.8 0.0 Viscosity, lbm /ft·h Liquid Vapor 2.093 1.874 1.692 1.537 1.405 1.290 1.238 1.189 1.144 1.101 1.060 1.021 0.985 0.951 0.918 0.887 0.857 0.837 0.829 0.802 0.776 0.751 0.728 0.705 0.683 0.662 0.642 0.622 0.603 0.585 0.568 0.551 0.534 0.518 0.503 0.488 0.473 0.459 0.445 0.432 0.419 0.406 0.394 0.381 0.369 0.358 0.346 0.335 0.324 0.313 0.302 0.292 0.281 0.271 0.260 0.250 0.240 0.230 0.219 0.209 0.198 0.188 0.176 0.165 0.152 0.138 0.121 — 0.0174 0.0180 0.0186 0.0191 0.0197 0.0203 0.0206 0.0208 0.0211 0.0214 0.0217 0.0220 0.0223 0.0225 0.0228 0.0231 0.0234 0.0236 0.0237 0.0240 0.0242 0.0245 0.0248 0.0251 0.0254 0.0257 0.0260 0.0262 0.0265 0.0268 0.0271 0.0274 0.0277 0.0280 0.0283 0.0286 0.0289 0.0292 0.0296 0.0299 0.0302 0.0305 0.0309 0.0312 0.0316 0.0320 0.0324 0.0328 0.0332 0.0336 0.0341 0.0346 0.0351 0.0356 0.0362 0.0369 0.0375 0.0383 0.0391 0.0400 0.0410 0.0422 0.0436 0.0452 0.0474 0.0502 0.0547 — 30.5 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0831 0.0814 0.0797 0.0780 0.0763 0.0747 0.0739 0.0731 0.0723 0.0715 0.0708 0.0700 0.0692 0.0684 0.0677 0.0669 0.0661 0.0656 0.0654 0.0646 0.0639 0.0631 0.0624 0.0617 0.0609 0.0602 0.0595 0.0587 0.0580 0.0573 0.0566 0.0558 0.0551 0.0544 0.0537 0.0530 0.0522 0.0515 0.0508 0.0501 0.0494 0.0487 0.0479 0.0472 0.0465 0.0458 0.0450 0.0443 0.0436 0.0428 0.0421 0.0413 0.0406 0.0399 0.0391 0.0383 0.0376 0.0368 0.0361 0.0353 0.0346 0.0340 0.0335 0.0332 0.0334 0.0347 0.0395 0.00255 0.00267 0.00280 0.00293 0.00306 0.00320 0.00327 0.00334 0.00341 0.00348 0.00355 0.00363 0.00370 0.00378 0.00386 0.00394 0.00402 0.00407 0.00410 0.00418 0.00426 0.00435 0.00444 0.00452 0.00461 0.00471 0.00480 0.00489 0.00499 0.00509 0.00519 0.00530 0.00540 0.00551 0.00562 0.00574 0.00586 0.00598 0.00611 0.00625 0.00638 0.00653 0.00668 0.00684 0.00701 0.00718 0.00737 0.00757 0.00778 0.00801 0.00825 0.00851 0.00880 0.00911 0.00946 0.00984 0.01027 0.01076 0.01131 0.01195 0.01270 0.01360 0.01470 0.01609 0.01793 0.02061 0.02574 28.31 –150 27.34 –140 26.36 –130 25.40 –120 24.44 –110 23.49 –100 23.02 –95 22.55 –90 22.08 –85 21.61 –80 21.15 –75 20.68 –70 20.22 –65 19.76 –60 19.30 –55 18.85 –50 18.40 –45 18.08 –41.46 17.94 –40 17.49 –35 17.05 –30 16.60 –25 16.16 –20 15.72 –15 15.28 –10 14.85 –5 14.41 0 13.98 5 13.55 10 13.13 15 12.70 20 12.28 25 11.86 30 11.45 35 11.04 40 10.63 45 10.22 50 9.82 55 9.41 60 9.02 65 8.62 70 8.23 75 7.84 80 7.46 85 7.08 90 6.70 95 6.33 100 5.96 105 5.60 110 5.24 115 4.88 120 4.53 125 4.19 130 3.85 135 3.51 140 3.18 145 2.86 150 2.54 155 2.24 160 1.93 165 1.64 170 1.36 175 1.09 180 0.83 185 0.58 190 0.35 195 0.15 200 0.00 205.06 c Critical point –150 0.263 98.28 146.06 –140 0.436 97.36 90.759 –130 0.698 96.44 58.384 –120 1.082 95.52 38.745 –110 1.629 94.59 26.444 –100 2.388 93.66 18.511 –95 2.865 93.19 15.623 –90 3.417 92.71 13.258 –85 4.053 92.24 11.309 –80 4.782 91.76 9.6939 –75 5.615 91.28 8.3487 –70 6.561 90.79 7.2222 –65 7.631 90.31 6.2744 –60 8.836 89.82 5.4730 –55 10.190 89.33 4.7924 –50 11.703 88.83 4.2119 –45 13.390 88.33 3.7147 –41.46b 14.696 87.97 3.4054 –40 15.262 87.82 3.2872 –35 17.336 87.32 2.9181 –30 19.624 86.80 2.5984 –25 22.142 86.29 2.3204 –20 24.906 85.76 2.0778 –15 27.929 85.24 1.8656 –10 31.230 84.71 1.6792 –5 34.824 84.17 1.5150 0 38.728 83.63 1.3701 5 42.960 83.08 1.2417 10 47.536 82.52 1.1276 15 52.475 81.96 1.0261 20 57.795 81.39 0.9354 25 63.514 80.82 0.8543 30 69.651 80.24 0.7815 35 76.225 79.65 0.7161 40 83.255 79.05 0.6572 45 90.761 78.44 0.6040 50 98.763 77.83 0.5558 55 107.28 77.20 0.5122 60 116.33 76.57 0.4725 65 125.94 75.92 0.4364 70 136.13 75.27 0.4035 75 146.92 74.60 0.3734 80 158.33 73.92 0.3459 85 170.38 73.23 0.3207 90 183.09 72.52 0.2975 95 196.50 71.80 0.2762 100 210.61 71.06 0.2566 105 225.46 70.30 0.2385 110 241.06 69.52 0.2217 115 257.45 68.72 0.2062 120 274.65 67.90 0.1918 125 292.69 67.05 0.1785 130 311.58 66.18 0.1660 135 331.37 65.27 0.1544 140 352.08 64.32 0.1435 145 373.74 63.34 0.1334 150 396.38 62.31 0.1238 155 420.04 61.22 0.1149 160 444.75 60.07 0.1064 165 470.56 58.84 0.0984 170 497.50 57.53 0.0907 175 525.62 56.10 0.0834 180 554.98 54.52 0.0764 185 585.63 52.74 0.0695 190 617.64 50.67 0.0626 195 651.12 48.14 0.0556 200 686.20 44.68 0.0479 205.06c 723.74 32.70 0.0306 *Temperatures on ITS-90 scale 0.29600 0.28808 0.28090 0.27439 0.26846 0.26307 0.26055 0.25815 0.25585 0.25366 0.25155 0.24954 0.24761 0.24577 0.24400 0.24230 0.24067 0.23955 0.23910 0.23759 0.23615 0.23475 0.23341 0.23211 0.23086 0.22965 0.22848 0.22735 0.22625 0.22519 0.22415 0.22315 0.22217 0.22121 0.22028 0.21936 0.21847 0.21758 0.21672 0.21586 0.21501 0.21417 0.21333 0.21250 0.21166 0.21083 0.20998 0.20913 0.20827 0.20739 0.20649 0.20557 0.20462 0.20364 0.20261 0.20153 0.20040 0.19919 0.19790 0.19650 0.19497 0.19328 0.19136 0.18916 0.18651 0.18316 0.17835 0.16012 b Normal Pressure 30.6 2009 ASHRAE Handbook—Fundamentals Fig. 3 Pressure-Enthalpy Diagram for Refrigerant 23 Thermophysical Properties of Refrigerants Refrigerant 23 (Trifluoromethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –247.23a –240 –230 –225 –220 –215 –210 –205 –200 –195 –190 –185 –180 –175 –170 –165 –160 –155 –150 –145 –140 –135 –130 –125 –120 –115.63b –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 79.06c Enthalpy, Pres- Density, Volume, Btu/lb ft3/lb sure, lb/ft3 psia Liquid Vapor Liquid Vapor 0.008 0.017 0.040 0.059 0.087 0.125 0.177 0.247 0.339 0.458 0.612 0.808 1.054 1.361 1.738 2.199 2.756 3.424 4.221 5.162 6.267 7.555 9.050 10.772 12.746 14.696 14.997 17.551 20.437 23.682 27.317 31.372 35.879 40.870 46.380 52.442 59.093 66.369 74.306 82.943 92.319 102.47 113.45 125.28 138.02 151.70 166.37 182.08 198.88 216.80 235.91 256.25 277.88 300.85 325.22 351.06 378.43 407.41 438.06 470.48 504.76 541.02 579.39 620.07 663.33 700.82 106.24 3866.20 105.44 2014.50 104.29 885.38 103.71 605.39 103.13 421.77 102.54 299.03 101.95 215.50 101.36 157.70 100.77 117.06 100.17 88.070 99.57 67.097 98.97 51.725 98.36 40.320 97.75 31.758 97.14 25.261 96.53 20.278 95.91 16.420 95.29 13.405 94.66 11.028 94.03 9.1386 93.40 7.6246 92.76 6.4024 92.12 5.4088 91.47 4.5956 90.82 3.9258 90.25 3.4353 90.16 3.3707 89.50 2.9080 88.83 2.5201 88.15 2.1934 87.47 1.9167 86.77 1.6812 86.07 1.4800 85.36 1.3072 84.64 1.1582 83.91 1.0293 83.17 0.9173 82.41 0.8196 81.65 0.7341 80.87 0.6590 80.07 0.5929 79.26 0.5344 78.44 0.4826 77.59 0.4366 76.72 0.3955 75.84 0.3587 74.92 0.3258 73.99 0.2962 73.02 0.2695 72.03 0.2454 70.99 0.2236 69.92 0.2038 68.81 0.1857 67.65 0.1692 66.43 0.1541 65.15 0.1402 63.79 0.1274 62.35 0.1156 60.79 0.1046 59.10 0.0943 57.24 0.0846 55.14 0.0753 52.69 0.0664 49.66 0.0573 45.29 0.0472 32.87 0.0304 –61.390 –59.292 –56.418 –54.987 –53.558 –52.130 –50.702 –49.274 –47.846 –46.416 –44.986 –43.554 –42.121 –40.686 –39.249 –37.809 –36.368 –34.923 –33.475 –32.024 –30.569 –29.110 –27.647 –26.179 –24.706 –23.414 –23.227 –21.742 –20.250 –18.751 –17.245 –15.731 –14.208 –12.675 –11.133 –9.581 –8.017 –6.441 –4.852 –3.250 –1.633 0.000 1.649 3.316 5.003 6.709 8.438 10.191 11.970 13.777 15.615 17.487 19.396 21.347 23.345 25.396 27.508 29.692 31.962 34.338 36.848 39.539 42.493 45.889 50.290 61.067 64.612 65.460 66.634 67.222 67.811 68.399 68.987 69.574 70.161 70.747 71.331 71.914 72.494 73.072 73.647 74.218 74.785 75.348 75.907 76.459 77.006 77.545 78.078 78.603 79.119 79.563 79.626 80.124 80.610 81.086 81.550 82.001 82.439 82.863 83.271 83.663 84.039 84.396 84.734 85.052 85.348 85.620 85.868 86.089 86.282 86.444 86.574 86.667 86.721 86.733 86.698 86.612 86.468 86.261 85.981 85.619 85.162 84.593 83.891 83.025 81.950 80.597 78.842 76.427 72.574 61.067 Entropy, Btu/lb·°F Liquid –0.19982 –0.19011 –0.17731 –0.17115 –0.16512 –0.15923 –0.15345 –0.14779 –0.14223 –0.13678 –0.13143 –0.12617 –0.12100 –0.11592 –0.11091 –0.10599 –0.10114 –0.09637 –0.09166 –0.08702 –0.08244 –0.07791 –0.07345 –0.06904 –0.06468 –0.06092 –0.06037 –0.05611 –0.05189 –0.04772 –0.04358 –0.03948 –0.03541 –0.03138 –0.02737 –0.02340 –0.01945 –0.01552 –0.01161 –0.00773 –0.00386 0.00000 0.00385 0.00768 0.01151 0.01534 0.01917 0.02300 0.02684 0.03070 0.03457 0.03846 0.04238 0.04634 0.05034 0.05440 0.05853 0.06275 0.06709 0.07158 0.07627 0.08124 0.08664 0.09281 0.10076 0.12049 a Triple 30.7 Specific Heat cp , Btu/lb·°F 0.2918 0.2886 0.2865 0.2860 0.2857 0.2856 0.2856 0.2856 0.2858 0.2859 0.2862 0.2864 0.2868 0.2871 0.2875 0.2880 0.2885 0.2891 0.2897 0.2903 0.2911 0.2919 0.2928 0.2937 0.2948 0.2958 0.2959 0.2971 0.2984 0.2998 0.3014 0.303 0.3047 0.3066 0.3086 0.3108 0.3131 0.3156 0.3183 0.3212 0.3243 0.3276 0.3313 0.3352 0.3395 0.3442 0.3493 0.3549 0.3612 0.3681 0.3759 0.3847 0.3947 0.4063 0.4197 0.4357 0.4550 0.4789 0.5093 0.5497 0.6060 0.6911 0.8360 1.1450 2.2830 0.1194 0.1206 0.1225 0.1236 0.1247 0.1259 0.1272 0.1285 0.1300 0.1315 0.1331 0.1347 0.1364 0.1382 0.1401 0.1421 0.1441 0.1462 0.1484 0.1506 0.1530 0.1554 0.1580 0.1606 0.1633 0.1658 0.1661 0.1691 0.1721 0.1753 0.1786 0.1820 0.1856 0.1893 0.1932 0.1973 0.2016 0.2061 0.2108 0.2158 0.2211 0.2267 0.2328 0.2392 0.2461 0.2536 0.2618 0.2707 0.2805 0.2914 0.3036 0.3174 0.3332 0.3514 0.3728 0.3983 0.4293 0.4679 0.5174 0.5833 0.6759 0.8158 1.0533 1.5501 3.2825 Vapor Liquid Vapor 0.39331 0.37780 0.35847 0.34962 0.34128 0.33339 0.32594 0.31889 0.31222 0.30589 0.29990 0.29422 0.28882 0.28370 0.27882 0.27419 0.26978 0.26557 0.26156 0.25774 0.25408 0.25059 0.24725 0.24405 0.24098 0.23840 0.23803 0.23521 0.23248 0.22986 0.22734 0.22490 0.22254 0.22026 0.21804 0.21589 0.21380 0.21176 0.20977 0.20781 0.20590 0.20402 0.20216 0.20033 0.19851 0.19669 0.19489 0.19307 0.19125 0.18941 0.18754 0.18564 0.18368 0.18167 0.17958 0.17739 0.17508 0.17263 0.16999 0.16710 0.16390 0.16025 0.15592 0.15046 0.14243 0.12049 point Thermal Cond., Vel. of Sound, Viscosity, Surface Btu/h·ft·°F ft/s lbm /ft·h cp /cv Tension, Temp.,* °F Vapor Liquid Vapor Liquid Vapor Liquid Vapor dyne/cm 1.3146 1.3119 1.3079 1.3060 1.3040 1.3021 1.3002 1.2984 1.2968 1.2952 1.2938 1.2925 1.2914 1.2905 1.2899 1.2894 1.2892 1.2893 1.2897 1.2903 1.2913 1.2926 1.2943 1.2964 1.2988 1.3013 1.3017 1.3050 1.3088 1.3131 1.3179 1.3233 1.3293 1.3359 1.3433 1.3515 1.3605 1.3704 1.3814 1.3935 1.4069 1.4217 1.4381 1.4564 1.4767 1.4994 1.5249 1.5536 1.5861 1.6231 1.6655 1.7145 1.7716 1.8389 1.9190 2.0160 2.1354 2.2857 2.4803 2.7415 3.1102 3.6698 4.6217 6.6135 13.5491 3974 3949 3875 3828 3777 3725 3671 3617 3562 3508 3454 3401 3348 3296 3244 3193 3142 3091 3041 2991 2941 2891 2842 2792 2743 2700 2693 2644 2595 2545 2496 2447 2397 2347 2297 2247 2197 2146 2095 2044 1992 1941 1888 1836 1783 1729 1675 1621 1566 1510 1453 1396 1338 1279 1219 1158 1096 1032 967 899 830 757 681 599 506 0 445.1 452.1 461.3 465.8 470.2 474.5 478.8 482.9 487.0 490.9 494.8 498.5 502.2 505.8 509.3 512.6 515.9 519.0 522.0 524.9 527.6 530.2 532.7 535.0 537.2 538.9 539.2 541.0 542.7 544.2 545.5 546.6 547.5 548.2 548.7 549.0 549.1 548.9 548.5 547.9 547.0 545.8 544.4 542.7 540.8 538.5 536.0 533.1 529.9 526.4 522.6 518.4 513.8 508.8 503.5 497.7 491.5 484.8 477.5 469.7 461.2 452.0 441.6 429.8 415.3 0.0 4.971 4.203 3.392 3.069 2.790 2.547 2.334 2.148 1.983 1.837 1.706 1.590 1.486 1.392 1.307 1.229 1.159 1.095 1.036 0.982 0.933 0.887 0.844 0.805 0.768 0.738 0.734 0.702 0.672 0.644 0.617 0.592 0.569 0.546 0.525 0.505 0.486 0.467 0.450 0.433 0.417 0.402 0.387 0.373 0.359 0.345 0.332 0.320 0.308 0.296 0.284 0.272 0.261 0.250 0.239 0.228 0.217 0.206 0.196 0.184 0.173 0.161 0.148 0.134 0.116 — 0.0129 0.0135 0.0143 0.0147 0.0151 0.0154 0.0158 0.0162 0.0166 0.0170 0.0174 0.0177 0.0181 0.0185 0.0189 0.0193 0.0196 0.0200 0.0204 0.0207 0.0211 0.0215 0.0219 0.0222 0.0226 0.0229 0.0230 0.0233 0.0237 0.0241 0.0244 0.0248 0.0251 0.0255 0.0259 0.0263 0.0266 0.0270 0.0274 0.0278 0.0282 0.0285 0.0289 0.0294 0.0298 0.0302 0.0307 0.0311 0.0316 0.0321 0.0326 0.0332 0.0338 0.0344 0.0351 0.0358 0.0367 0.0376 0.0386 0.0398 0.0413 0.0431 0.0454 0.0487 0.0546 — 0.1553 0.1468 0.1366 0.1320 0.1277 0.1238 0.1200 0.1166 0.1133 0.1102 0.1074 0.1046 0.1021 0.0996 0.0973 0.0951 0.0930 0.0911 0.0892 0.0873 0.0856 0.0839 0.0823 0.0808 0.0793 0.0780 0.0779 0.0765 0.0751 0.0738 0.0726 0.0713 0.0701 0.0689 0.0678 0.0667 0.0656 0.0645 0.0634 0.0624 0.0613 0.0603 0.0593 0.0583 0.0573 0.0563 0.0553 0.0543 0.0533 0.0523 0.0512 0.0502 0.0492 0.0481 0.0470 0.0459 0.0447 0.0435 0.0422 0.0409 0.0394 0.0378 0.0360 0.0339 0.0313 0.00219 0.00232 0.00249 0.00258 0.00267 0.00275 0.00284 0.00293 0.00301 0.00310 0.00319 0.00328 0.00336 0.00345 0.00354 0.00363 0.00372 0.00381 0.00391 0.00400 0.00410 0.00419 0.00429 0.00439 0.00449 0.00458 0.00459 0.00470 0.00480 0.00491 0.00502 0.00514 0.00526 0.00538 0.00550 0.00563 0.00576 0.00590 0.00604 0.00619 0.00634 0.00650 0.00667 0.00684 0.00702 0.00721 0.00741 0.00762 0.00784 0.00807 0.00832 0.00858 0.00886 0.00917 0.00949 0.00985 0.01024 0.01066 0.01114 0.01168 0.01230 0.01303 0.01393 0.01513 0.01740 34.37 33.39 32.04 31.37 30.71 30.05 29.39 28.74 28.09 27.44 26.80 26.16 25.52 24.88 24.25 23.63 23.01 22.39 21.77 21.16 20.55 19.95 19.35 18.76 18.17 17.65 17.58 17.00 16.42 15.85 15.28 14.71 14.16 13.60 13.05 12.51 11.97 11.44 10.91 10.39 9.87 9.36 8.86 8.36 7.87 7.38 6.91 6.44 5.97 5.52 5.07 4.64 4.21 3.79 3.38 2.98 2.60 2.22 1.86 1.52 1.19 0.88 0.59 0.34 0.12 0.00 –247.23 –240 –230 –225 –220 –215 –210 –205 –200 –195 –190 –185 –180 –175 –170 –165 –160 –155 –150 –145 –140 –135 –130 –125 –120 –115.63 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 79.06 point *Temperatures on ITS-90 scale b Normal boiling point c Critical Pressure 30.8 2009 ASHRAE Handbook—Fundamentals Fig. 4 Pressure-Enthalpy Diagram for Refrigerant 32 Thermophysical Properties of Refrigerants Refrigerant 32 (Difluoromethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor –65.520 –63.901 –60.111 –56.338 –52.578 –48.829 –45.090 –41.358 –37.630 –33.904 –30.177 –26.447 –22.711 –20.840 –18.966 –17.089 –15.209 –13.325 –11.437 –9.544 –8.016 –7.647 –5.744 –3.836 –1.921 0.000 1.928 3.864 5.808 7.761 9.723 11.694 13.676 15.669 17.673 19.690 21.719 23.762 25.820 27.893 29.983 32.090 34.215 36.360 38.526 40.714 42.927 45.165 47.431 49.727 52.055 54.419 56.821 59.266 61.758 64.303 66.907 69.577 72.325 75.163 78.108 81.181 84.415 87.858 95.724 107.269 120.855 133.830 134.497 136.065 137.633 139.199 140.760 142.311 143.849 145.370 146.869 148.341 149.783 151.189 151.877 152.556 153.223 153.879 154.523 155.155 155.774 156.263 156.379 156.971 157.549 158.111 158.658 159.189 159.703 160.200 160.679 161.139 161.579 161.999 162.397 162.774 163.127 163.455 163.758 164.034 164.281 164.499 164.686 164.839 164.957 165.039 165.081 165.081 165.036 164.944 164.800 164.602 164.343 164.020 163.627 163.155 162.598 161.945 161.184 160.301 159.275 158.082 156.689 155.048 153.089 147.670 136.620 120.855 Entropy, Btu/lb·°F Liquid Vapor Specific Heat cp , Btu/lb·°F Liquid Vapor Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 4641 4599 4503 4407 4311 4216 4121 4026 3931 3836 3742 3648 3553 3506 3459 3412 3365 3318 3270 3223 3185 3176 3129 3081 3034 2986 2939 2891 2843 2795 2747 2699 2651 2602 2553 2504 2455 2406 2356 2306 2256 2206 2155 2104 2052 2000 1947 1894 1840 1785 1730 1674 1617 1560 1501 1441 1379 1317 1253 1187 1119 1049 977 902 740 545 0 556.4 2.965 0.0138 561.0 2.777 0.0140 571.6 2.407 0.0146 581.9 2.113 0.0151 591.9 1.874 0.0157 601.6 1.677 0.0162 611.0 1.512 0.0168 620.0 1.371 0.0174 628.6 1.249 0.0179 636.8 1.143 0.0185 644.6 1.050 0.0191 651.9 0.967 0.0196 658.7 0.894 0.0202 662.0 0.860 0.0205 665.1 0.828 0.0208 668.0 0.797 0.0210 670.9 0.768 0.0213 673.6 0.740 0.0216 676.1 0.714 0.0219 678.5 0.689 0.0222 680.3 0.669 0.0224 680.7 0.665 0.0225 682.8 0.642 0.0227 684.8 0.620 0.0230 686.5 0.599 0.0233 688.1 0.579 0.0236 689.6 0.560 0.0239 690.8 0.541 0.0242 691.9 0.524 0.0244 692.8 0.507 0.0247 693.6 0.491 0.0250 694.1 0.475 0.0253 694.4 0.460 0.0256 694.6 0.446 0.0259 694.5 0.432 0.0262 694.3 0.418 0.0265 693.8 0.405 0.0268 693.1 0.393 0.0271 692.2 0.381 0.0274 691.1 0.369 0.0277 689.7 0.358 0.0280 688.1 0.347 0.0284 686.3 0.336 0.0287 684.2 0.326 0.0290 681.9 0.316 0.0300 679.3 0.306 0.0304 676.4 0.296 0.0309 673.2 0.287 0.0313 669.8 0.278 0.0318 666.1 0.269 0.0322 662.1 0.261 0.0327 657.7 0.252 0.0333 653.0 0.244 0.0338 648.0 0.236 0.0344 642.6 0.228 0.0351 636.8 0.220 0.0357 630.5 0.212 0.0365 623.9 0.204 0.0373 616.7 0.196 0.0381 609.1 0.189 0.0391 600.9 0.181 0.0401 592.0 0.173 0.0413 582.3 0.164 0.0427 571.8 0.156 0.0444 547.0 0.137 0.0489 509.3 0.110 0.0592 0.0 — — b Normal boiling point 30.9 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.1404 0.1400 0.1388 0.1375 0.1359 0.1341 0.1322 0.1301 0.1280 0.1257 0.1233 0.1209 0.1184 0.1172 0.1159 0.1146 0.1133 0.1120 0.1107 0.1094 0.1083 0.1081 0.1068 0.1054 0.1041 0.1028 0.1015 0.1001 0.0988 0.0975 0.0962 0.0949 0.0935 0.0922 0.0909 0.0896 0.0883 0.0871 0.0858 0.0845 0.0832 0.0820 0.0807 0.0794 0.0782 0.0770 0.0757 0.0745 0.0733 0.0721 0.0708 0.0696 0.0684 0.0672 0.0660 0.0648 0.0636 0.0624 0.0612 0.0599 0.0587 0.0575 0.0562 0.0550 0.0529 0.0554 0.00402 0.00402 0.00403 0.00405 0.00407 0.00410 0.00414 0.00419 0.00425 0.00431 0.00438 0.00446 0.00455 0.00459 0.00464 0.00469 0.00475 0.00480 0.00486 0.00492 0.00497 0.00498 0.00505 0.00512 0.00519 0.00526 0.00534 0.00542 0.00550 0.00559 0.00568 0.00577 0.00587 0.00598 0.00609 0.00620 0.00632 0.00645 0.00658 0.00673 0.00688 0.00704 0.00721 0.00740 0.00759 0.00781 0.00804 0.00829 0.00856 0.00886 0.00919 0.00955 0.00995 0.01039 0.01089 0.01145 0.01208 0.01280 0.01363 0.01460 0.01573 0.01709 0.01873 0.02078 0.02709 0.04606 39.01 –214.26 38.47 –210 37.22 –200 35.97 –190 34.73 –180 33.51 –170 32.29 –160 31.07 –150 29.87 –140 28.68 –130 27.50 –120 26.33 –110 25.17 –100 24.59 –95 24.02 –90 23.45 –85 22.88 –80 22.31 –75 21.75 –70 21.19 –65 20.74 –60.97 20.63 –60 20.08 –55 19.53 –50 18.98 –45 18.44 –40 17.89 –35 17.36 –30 16.82 –25 16.29 –20 15.76 –15 15.24 –10 14.72 –5 14.20 0 13.69 5 13.18 10 12.67 15 12.17 20 11.67 25 11.18 30 10.69 35 10.21 40 9.73 45 9.25 50 8.78 55 8.32 60 7.86 65 7.40 70 6.96 75 6.51 80 6.07 85 5.64 90 5.22 95 4.80 100 4.39 105 3.99 110 3.59 115 3.21 120 2.83 125 2.46 130 2.11 135 1.76 140 1.43 145 1.11 150 0.54 160 0.07 170 0.00 172.59 c Critical point –214.26a 0.007 89.23 7270.10 –210 0.010 88.87 5150.00 –200 0.022 88.03 2413.30 –190 0.046 87.18 1207.60 –180 0.090 86.33 640.300 –170 0.167 85.48 357.440 –160 0.295 84.63 208.900 –150 0.500 83.77 127.180 –140 0.816 82.90 80.317 –130 1.286 82.02 52.414 –120 1.966 81.14 35.229 –110 2.923 80.25 24.316 –100 4.235 79.35 17.190 –95 5.053 78.90 14.573 –90 5.996 78.44 12.417 –85 7.078 77.98 10.633 –80 8.312 77.52 9.1470 –75 9.716 77.05 7.9036 –70 11.304 76.58 6.8579 –65 13.095 76.11 5.9744 –60.97b 14.696 75.72 5.3611 –60 15.105 75.63 5.2246 –55 17.354 75.15 4.5854 –50 19.861 74.66 4.0383 –45 22.646 74.17 3.5681 –40 25.731 73.67 3.1625 –35 29.137 73.17 2.8114 –30 32.887 72.67 2.5062 –25 37.003 72.16 2.2402 –20 41.511 71.64 2.0076 –15 46.433 71.12 1.8034 –10 51.796 70.60 1.6237 –5 57.625 70.06 1.4652 0 63.947 69.52 1.3248 5 70.789 68.97 1.2002 10 78.179 68.42 1.0894 15 86.144 67.86 0.9905 20 94.715 67.28 0.9021 25 103.92 66.71 0.8228 30 113.79 66.12 0.7516 35 124.35 65.52 0.6874 40 135.65 64.91 0.6296 45 147.70 64.29 0.5773 50 160.54 63.65 0.5298 55 174.21 63.01 0.4868 60 188.74 62.35 0.4477 65 204.17 61.68 0.4120 70 220.52 60.99 0.3794 75 237.85 60.28 0.3496 80 256.18 59.56 0.3223 85 275.56 58.81 0.2972 90 296.02 58.04 0.2741 95 317.61 57.25 0.2529 100 340.37 56.43 0.2333 105 364.34 55.58 0.2151 110 389.58 54.69 0.1983 115 416.13 53.77 0.1826 120 444.04 52.80 0.1681 125 473.37 51.77 0.1545 130 504.17 50.69 0.1418 135 536.51 49.53 0.1298 140 570.47 48.28 0.1185 145 606.10 46.91 0.1077 150 643.51 45.40 0.0974 160 724.09 41.65 0.0775 170 813.58 35.24 0.0549 172.59c 838.61 26.47 0.0378 *Temperatures on ITS-90 scale –0.20152 0.61079 0.3806 –0.19498 0.59966 0.3798 –0.1801 0.57539 0.3781 –0.16584 0.55345 0.3766 –0.15215 0.53358 0.3754 –0.13898 0.51552 0.3743 –0.12629 0.49907 0.3735 –0.11404 0.48404 0.3729 –0.10219 0.47027 0.3726 –0.09072 0.45763 0.3725 –0.07959 0.44598 0.3727 –0.06877 0.43522 0.3731 –0.05824 0.42525 0.3738 –0.05308 0.42054 0.3743 –0.04798 0.41600 0.3748 –0.04295 0.41162 0.3754 –0.03797 0.40738 0.3760 –0.03305 0.40329 0.3768 –0.02818 0.39934 0.3776 –0.02337 0.39551 0.3785 –0.01953 0.39251 0.3793 –0.01860 0.39180 0.3795 –0.01389 0.38821 0.3805 –0.00922 0.38472 0.3817 –0.00459 0.38134 0.3829 0.00000 0.37805 0.3842 0.00455 0.37486 0.3857 0.00906 0.37175 0.3872 0.01353 0.36872 0.3888 0.01797 0.36577 0.3906 0.02238 0.36289 0.3924 0.02676 0.36008 0.3944 0.03111 0.35733 0.3965 0.03543 0.35463 0.3987 0.03973 0.35199 0.4011 0.04400 0.34940 0.4037 0.04825 0.34685 0.4064 0.05248 0.34434 0.4093 0.05670 0.34187 0.4124 0.06090 0.33943 0.4157 0.06508 0.33701 0.4192 0.06926 0.33462 0.4230 0.07342 0.33225 0.4271 0.07758 0.32989 0.4316 0.08173 0.32754 0.4363 0.08588 0.32519 0.4415 0.09002 0.32284 0.4471 0.09418 0.32049 0.4533 0.09833 0.31812 0.4600 0.10250 0.31573 0.4674 0.10669 0.31332 0.4756 0.11089 0.31087 0.4847 0.11511 0.30838 0.4950 0.11937 0.30584 0.5066 0.12366 0.30323 0.5197 0.12800 0.30054 0.5349 0.13239 0.29777 0.5525 0.13685 0.29488 0.5734 0.14139 0.29186 0.5984 0.14603 0.28867 0.6290 0.15080 0.28529 0.6675 0.15573 0.28165 0.7172 0.16088 0.27769 0.7842 0.16630 0.27329 0.8800 0.17853 0.26236 1.2880 0.19632 0.24293 4.8650 0.21760 0.21760 a Triple point 0.1577 1.3206 0.1581 1.3199 0.1591 1.3180 0.1602 1.3163 0.1616 1.3146 0.1633 1.3130 0.1652 1.3117 0.1675 1.3106 0.1702 1.3100 0.1734 1.3097 0.1770 1.3100 0.1811 1.3109 0.1858 1.3125 0.1884 1.3136 0.1910 1.3149 0.1938 1.3165 0.1968 1.3182 0.1998 1.3203 0.2030 1.3226 0.2063 1.3252 0.2091 1.3276 0.2097 1.3282 0.2133 1.3314 0.2170 1.3350 0.2208 1.3390 0.2247 1.3433 0.2287 1.3481 0.2329 1.3532 0.2372 1.3589 0.2416 1.3651 0.2462 1.3718 0.2510 1.3790 0.2559 1.3869 0.2610 1.3955 0.2662 1.4047 0.2717 1.4148 0.2774 1.4256 0.2834 1.4375 0.2897 1.4503 0.2963 1.4642 0.3032 1.4794 0.3106 1.4959 0.3184 1.5140 0.3266 1.5337 0.3355 1.5553 0.3450 1.5790 0.3552 1.6052 0.3663 1.6341 0.3783 1.6662 0.3915 1.7019 0.4060 1.7419 0.4221 1.7869 0.4400 1.8378 0.4602 1.8958 0.4831 1.9624 0.5094 2.0397 0.5399 2.1302 0.5759 2.2378 0.6189 2.3675 0.6715 2.5268 0.7373 2.7273 0.8225 2.9873 0.9372 3.3381 1.1007 3.8379 1.8018 5.9665 7.6726 23.3087 Fig. 33 Pressure-Enthalpy Diagram for Refrigerant 123 30.10 2009 ASHRAE Handbook—Fundamentals Fig. 5 Pressure-Enthalpy Diagram for Refrigerant 123 Thermophysical Properties of Refrigerants Refrigerant 123 (2,2-Dichloro-1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor Enthalpy, Pres- Density, Volume, Btu/lb Temp.,* sure, lb/ft3 ft3/lb °F psia Liquid Vapor Liquid Vapor –140 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 82.08b 85 90 95 100 105 110 115 120 125 130 135 140 145 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 362.63c 0.003 0.006 0.011 0.020 0.036 0.060 0.097 0.154 0.236 0.354 0.519 0.744 1.046 1.445 1.963 2.274 2.625 3.019 3.460 3.952 4.499 5.106 5.778 6.519 7.334 8.229 9.208 10.278 11.445 12.713 14.090 14.696 15.580 17.192 18.931 20.804 22.819 24.980 27.297 29.776 32.425 35.251 38.261 41.464 44.868 48.479 56.360 65.173 74.986 85.868 97.892 111.13 125.66 141.56 158.91 177.80 198.31 220.53 244.58 270.54 298.53 328.69 361.16 396.11 433.76 474.41 518.66 531.10 108.90 108.12 107.35 106.57 105.80 105.03 104.26 103.48 102.70 101.92 101.13 100.34 99.54 98.73 97.92 97.51 97.10 96.69 96.28 95.86 95.44 95.02 94.60 94.17 93.74 93.31 92.88 92.44 92.01 91.56 91.12 90.94 90.67 90.22 89.77 89.31 88.85 88.39 87.92 87.45 86.98 86.50 86.01 85.52 85.03 84.53 83.52 82.49 81.43 80.34 79.23 78.08 76.89 75.66 74.38 73.04 71.64 70.16 68.60 66.92 65.11 63.12 60.91 58.37 55.33 51.32 43.97 34.34 7431.6 3871.0 2111.6 1201.0 709.46 433.83 273.77 177.81 118.57 80.999 56.576 40.333 29.299 21.655 16.264 14.174 12.396 10.878 9.5779 8.4595 7.4943 6.6586 5.9327 5.3002 4.7474 4.2629 3.8371 3.4617 3.1301 2.8362 2.5753 2.4753 2.3429 2.1356 1.9503 1.7841 1.6349 1.5006 1.3795 1.2701 1.1710 1.0812 0.9996 0.9253 0.8577 0.7959 0.6876 0.5965 0.5195 0.4539 0.3979 0.3497 0.3080 0.2719 0.2404 0.2128 0.1885 0.1670 0.1479 0.1309 0.1155 0.1016 0.0889 0.0770 0.0658 0.0544 0.0403 0.0291 –22.241 –20.033 –17.826 –15.619 –13.410 –11.195 –8.975 –6.746 –4.509 –2.260 0.000 2.272 4.558 6.857 9.170 10.332 11.498 12.667 13.840 15.017 16.198 17.382 18.570 19.762 20.958 22.158 23.362 24.570 25.782 26.998 28.218 28.728 29.443 30.671 31.904 33.141 34.383 35.628 36.879 38.134 39.393 40.657 41.926 43.200 44.479 45.763 48.347 50.953 53.583 56.237 58.918 61.627 64.367 67.141 69.952 72.805 75.704 78.655 81.666 84.749 87.916 91.188 94.594 98.186 102.059 106.459 112.667 118.800 71.783 72.974 74.187 75.421 76.676 77.950 79.244 80.556 81.885 83.231 84.592 85.967 87.355 88.754 90.163 90.871 91.582 92.294 93.008 93.723 94.440 95.158 95.877 96.597 97.317 98.038 98.760 99.481 100.203 100.924 101.645 101.945 102.365 103.085 103.804 104.521 105.238 105.953 106.666 107.377 108.086 108.792 109.497 110.198 110.896 111.591 112.970 114.333 115.678 117.001 118.300 119.572 120.813 122.019 123.184 124.303 125.367 126.368 127.294 128.128 128.851 129.431 129.822 129.950 129.670 128.628 125.064 118.800 Entropy, Btu/lb·°F Liquid –0.06050 –0.05370 –0.04710 –0.04070 –0.03447 –0.02840 –0.02247 –0.01668 –0.01101 –0.00545 0.00000 0.00535 0.01061 0.01578 0.02086 0.02337 0.02587 0.02834 0.03080 0.03324 0.03566 0.03806 0.04045 0.04282 0.04518 0.04752 0.04984 0.05215 0.05444 0.05673 0.05899 0.05993 0.06124 0.06348 0.06571 0.06792 0.07012 0.07231 0.07449 0.07665 0.07881 0.08095 0.08308 0.08520 0.08732 0.08942 0.09359 0.09773 0.10184 0.10592 0.10997 0.11400 0.11801 0.12201 0.12599 0.12997 0.13396 0.13795 0.14196 0.14600 0.15010 0.15426 0.15853 0.16297 0.16769 0.17298 0.18039 0.18779 Vapor 0.23363 0.22843 0.22379 0.21966 0.21600 0.21275 0.20989 0.20737 0.20516 0.20323 0.20157 0.20014 0.19892 0.19790 0.19706 0.19670 0.19638 0.19609 0.19585 0.19563 0.19544 0.19529 0.19517 0.19507 0.19500 0.19495 0.19493 0.19493 0.19495 0.19499 0.19505 0.19508 0.19513 0.19522 0.19534 0.19546 0.19560 0.19576 0.19593 0.19611 0.19630 0.19650 0.19671 0.19693 0.19716 0.19739 0.19788 0.19839 0.19892 0.19945 0.19999 0.20053 0.20106 0.20158 0.20207 0.20254 0.20296 0.20334 0.20365 0.20387 0.20398 0.20395 0.20372 0.20320 0.20222 0.20036 0.19551 0.18779 Specific Heat cp , Btu/lb·°F Liquid 0.2210 0.2207 0.2206 0.2208 0.2211 0.2217 0.2224 0.2233 0.2243 0.2254 0.2266 0.2279 0.2292 0.2306 0.2320 0.2327 0.2334 0.2341 0.2349 0.2356 0.2364 0.2371 0.2379 0.2387 0.2394 0.2402 0.2410 0.2418 0.2426 0.2434 0.2442 0.2445 0.2450 0.2458 0.2467 0.2475 0.2484 0.2492 0.2501 0.2510 0.2520 0.2529 0.2539 0.2548 0.2559 0.2569 0.2591 0.2614 0.2638 0.2665 0.2694 0.2726 0.2761 0.2800 0.2845 0.2896 0.2956 0.3026 0.3110 0.3215 0.3349 0.3529 0.3785 0.4186 0.4925 0.6830 2.5070 Vapor Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 3928 3854 3778 3702 3626 3549 3472 3394 3317 3240 3164 3087 3012 2936 2862 2825 2788 2751 2714 2678 2641 2605 2569 2533 2498 2462 2427 2392 2357 2322 2287 2273 2252 2218 2184 2149 2115 2081 2047 2014 1980 1946 1913 1879 1846 1813 1746 1680 1614 1548 1482 1416 1349 1283 1216 1148 1080 1012 942 871 800 726 650 571 488 397 290 0 341.7 346.6 351.4 356.2 360.8 365.4 369.9 374.3 378.5 382.7 386.8 390.7 394.5 398.2 401.7 403.3 405.0 406.6 408.1 409.6 411.0 412.4 413.7 414.9 416.1 417.3 418.3 419.4 420.3 421.2 422.0 422.3 422.7 423.3 423.9 424.4 424.8 425.2 425.4 425.6 425.6 425.6 425.5 425.3 425.0 424.6 423.5 422.0 420.1 417.7 414.7 411.3 407.3 402.8 397.6 391.7 385.1 377.7 369.4 360.2 349.9 338.5 325.7 311.5 295.4 277.0 255.2 0.0 7.731 6.547 5.645 4.934 4.359 3.885 3.488 3.150 2.860 2.607 2.386 2.191 2.018 1.864 1.725 1.661 1.601 1.543 1.488 1.435 1.385 1.337 1.292 1.248 1.207 1.167 1.129 1.092 1.057 1.023 0.991 0.978 0.960 0.930 0.901 0.874 0.847 0.822 0.797 0.773 0.751 0.728 0.707 0.687 0.667 0.648 0.611 0.577 0.545 0.515 0.487 0.460 0.435 0.411 0.388 0.367 0.346 0.326 0.307 0.288 0.270 0.252 0.234 0.216 0.196 0.173 0.138 — 0.0146 0.0151 0.0157 0.0163 0.0168 0.0174 0.0179 0.0185 0.0190 0.0196 0.0201 0.0206 0.0211 0.0217 0.0222 0.0224 0.0227 0.0229 0.0232 0.0235 0.0237 0.0239 0.0242 0.0244 0.0247 0.0249 0.0252 0.0254 0.0256 0.0259 0.0261 0.0262 0.0264 0.0266 0.0268 0.0271 0.0273 0.0275 0.0277 0.0280 0.0282 0.0284 0.0287 0.0289 0.0291 0.0293 0.0298 0.0303 0.0307 0.0312 0.0317 0.0322 0.0328 0.0334 0.0340 0.0347 0.0355 0.0364 0.0374 0.0386 0.0400 0.0418 0.0440 0.0469 0.0510 0.0575 0.0730 — 30.11 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0645 0.0636 0.0628 0.0619 0.0611 0.0602 0.0593 0.0584 0.0575 0.0565 0.0555 0.0546 0.0536 0.0526 0.0515 0.0510 0.0505 0.0501 0.0496 0.0491 0.0486 0.0481 0.0476 0.0471 0.0467 0.0462 0.0457 0.0453 0.0448 0.0444 0.0439 0.0437 0.0435 0.0430 0.0426 0.0422 0.0418 0.0413 0.0409 0.0405 0.0401 0.0397 0.0393 0.0389 0.0385 0.0381 0.0374 0.0366 0.0359 0.0352 0.0345 0.0338 0.0331 0.0324 0.0317 0.0310 0.0303 0.0296 0.0289 0.0282 0.0275 0.0267 0.0259 0.0251 0.0243 0.0234 0.0227 0.00135 0.00153 0.00171 0.00190 0.00208 0.00226 0.00244 0.00263 0.00281 0.00299 0.00317 0.00335 0.00353 0.00371 0.00390 0.00399 0.00408 0.00417 0.00426 0.00435 0.00444 0.00453 0.00462 0.00471 0.00481 0.00490 0.00499 0.00508 0.00518 0.00527 0.00537 0.00540 0.00546 0.00556 0.00565 0.00575 0.00585 0.00595 0.00604 0.00614 0.00625 0.00635 0.00645 0.00656 0.00666 0.00677 0.00699 0.00722 0.00745 0.00769 0.00795 0.00821 0.00849 0.00877 0.00908 0.00940 0.00974 0.01010 0.01050 0.01092 0.01139 0.01191 0.01251 0.01321 0.01411 0.01539 0.01819 30.50 29.75 29.01 28.27 27.53 26.80 26.07 25.34 24.62 23.91 23.19 22.48 21.78 21.08 20.38 20.03 19.69 19.34 19.00 18.66 18.32 17.98 17.64 17.30 16.97 16.63 16.30 15.97 15.64 15.31 14.98 14.84 14.65 14.33 14.00 13.68 13.36 13.04 12.72 12.41 12.09 11.78 11.47 11.16 10.85 10.54 9.93 9.33 8.74 8.15 7.57 7.00 6.44 5.88 5.34 4.81 4.29 3.78 3.28 2.80 2.33 1.88 1.45 1.04 0.66 0.32 0.05 0.00 –140 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 82.08 85 90 95 100 105 110 115 120 125 130 135 140 145 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 362.63 point 0.1181 1.1237 0.1203 1.1212 0.1226 1.1187 0.1248 1.1165 0.1270 1.1144 0.1291 1.1124 0.1313 1.1106 0.1334 1.1090 0.1356 1.1075 0.1377 1.1061 0.1398 1.1050 0.1420 1.1040 0.1441 1.1032 0.1463 1.1026 0.1484 1.1022 0.1495 1.1021 0.1506 1.1020 0.1517 1.1020 0.1528 1.1020 0.1540 1.1021 0.1551 1.1023 0.1562 1.1025 0.1574 1.1028 0.1585 1.1031 0.1597 1.1035 0.1609 1.1040 0.1621 1.1046 0.1633 1.1052 0.1645 1.1059 0.1657 1.1067 0.1669 1.1075 0.1675 1.1079 0.1682 1.1085 0.1695 1.1095 0.1707 1.1106 0.1720 1.1119 0.1734 1.1132 0.1747 1.1146 0.1761 1.1162 0.1775 1.1178 0.1789 1.1196 0.1803 1.1215 0.1818 1.1236 0.1833 1.1258 0.1848 1.1281 0.1863 1.1306 0.1896 1.1362 0.1929 1.1426 0.1965 1.1499 0.2004 1.1583 0.2045 1.1681 0.2089 1.1793 0.2138 1.1925 0.2191 1.2079 0.2251 1.2262 0.2319 1.2482 0.2398 1.2749 0.2490 1.3079 0.2603 1.3496 0.2742 1.4035 0.2922 1.4755 0.3166 1.5762 0.3520 1.7258 0.4084 1.9693 0.5138 2.4318 0.7861 3.6383 3.263 14.6330 b Normal *Temperatures on ITS-90 scale boiling point c Critical Pressure 30.12 2009 ASHRAE Handbook—Fundamentals Fig. 6 Pressure-Enthalpy Diagram for Refrigerant 124 Thermophysical Properties of Refrigerants Refrigerant 124 (2-Chloro-1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor Pres- Density, Volume, Temp.,* sure, lb/ft3 ft3/lb °F psia Liquid Vapor –150 0.030 –140 0.056 –130 0.098 –120 0.165 –110 0.269 –100 0.424 –90 0.650 –80 0.969 –70 1.411 –60 2.008 –50 2.801 –45 3.284 –40 3.832 –35 4.454 –30 5.154 –25 5.941 –20 6.821 –15 7.803 –10 8.896 –5 10.106 0 11.444 5 12.918 10 14.537 10.47b 14.696 15 16.312 20 18.252 25 20.368 30 22.670 35 25.169 40 27.876 45 30.802 50 33.959 55 37.358 60 41.011 65 44.931 70 49.129 75 53.619 80 58.413 85 63.524 90 68.966 95 74.750 100 80.893 105 87.406 110 94.304 115 101.60 120 109.31 125 117.45 130 126.04 135 135.08 140 144.60 145 154.60 150 165.12 155 176.16 160 187.74 165 199.87 170 212.59 175 225.90 180 239.83 185 254.39 190 269.61 195 285.52 200 302.12 210 337.55 220 376.14 230 418.15 240 463.99 250 514.35 252.10c 525.66 107.22 106.32 105.41 104.51 103.59 102.68 101.76 100.83 99.89 98.95 98.00 97.52 97.03 96.55 96.06 95.57 95.08 94.58 94.08 93.57 93.06 92.55 92.04 91.99 91.51 90.99 90.46 89.92 89.38 88.84 88.29 87.73 87.17 86.60 86.02 85.44 84.85 84.25 83.65 83.03 82.41 81.77 81.13 80.47 79.81 79.13 78.44 77.73 77.01 76.28 75.52 74.75 73.96 73.14 72.30 71.44 70.54 69.61 68.65 67.64 66.59 65.48 63.06 60.29 56.94 52.51 44.21 34.96 800.14 450.73 264.79 161.57 102.02 66.458 44.529 30.612 21.542 15.485 11.350 9.7829 8.4679 7.3594 6.4208 5.6227 4.9412 4.3571 3.8545 3.4204 3.0442 2.7171 2.4317 2.4070 2.1820 1.9627 1.7697 1.5993 1.4484 1.3145 1.1953 1.0890 0.9939 0.9087 0.8322 0.7633 0.7011 0.6449 0.5940 0.5478 0.5058 0.4676 0.4327 0.4008 0.3716 0.3448 0.3202 0.2976 0.2767 0.2575 0.2397 0.2232 0.2080 0.1938 0.1806 0.1683 0.1568 0.1461 0.1361 0.1266 0.1178 0.1094 0.0940 0.0801 0.0671 0.0543 0.0388 0.0286 Enthalpy, Btu/lb Liquid –25.872 –23.590 –21.295 –18.988 –16.668 –14.334 –11.985 –9.621 –7.241 –4.844 –2.431 –1.218 0.000 1.222 2.449 3.681 4.918 6.159 7.406 8.657 9.914 11.176 12.444 12.563 13.717 14.996 16.281 17.572 18.868 20.171 21.481 22.797 24.119 25.449 26.786 28.129 29.481 30.840 32.207 33.582 34.966 36.358 37.760 39.171 40.592 42.023 43.465 44.918 46.383 47.860 49.351 50.855 52.374 53.909 55.460 57.030 58.619 60.229 61.863 63.522 65.210 66.931 70.487 74.247 78.313 82.943 89.526 95.009 Vapor 61.843 63.119 64.415 65.729 67.061 68.410 69.773 71.149 72.537 73.935 75.342 76.047 76.754 77.462 78.171 78.881 79.590 80.300 81.010 81.720 82.429 83.137 83.843 83.909 84.549 85.253 85.955 86.655 87.352 88.047 88.739 89.427 90.112 90.793 91.470 92.143 92.810 93.472 94.129 94.779 95.423 96.060 96.689 97.311 97.923 98.526 99.120 99.702 100.272 100.830 101.374 101.903 102.416 102.911 103.387 103.841 104.272 104.676 105.051 105.394 105.698 105.960 106.326 106.409 106.051 104.866 100.836 95.009 Entropy, Btu/lb·°F Liquid –0.07135 –0.06409 –0.05703 –0.05013 –0.04340 –0.03682 –0.03038 –0.02407 –0.01789 –0.01182 –0.00586 –0.00292 0.00000 0.00289 0.00576 0.00861 0.01143 0.01424 0.01702 0.01978 0.02253 0.02525 0.02796 0.02821 0.03065 0.03332 0.03597 0.03861 0.04124 0.04385 0.04644 0.04902 0.05159 0.05415 0.05669 0.05922 0.06174 0.06426 0.06676 0.06925 0.07173 0.07420 0.07667 0.07913 0.08158 0.08403 0.08648 0.08892 0.09135 0.09379 0.09622 0.09866 0.10110 0.10354 0.10598 0.10843 0.11089 0.11336 0.11584 0.11834 0.12086 0.12341 0.12861 0.13401 0.13975 0.14619 0.15526 0.16290 Vapor 0.21191 0.20715 0.20296 0.19928 0.19605 0.19323 0.19078 0.18866 0.18685 0.18529 0.18398 0.18341 0.18289 0.18242 0.18199 0.18161 0.18127 0.18097 0.18071 0.18048 0.18028 0.18011 0.17998 0.17997 0.17987 0.17979 0.17973 0.17969 0.17968 0.17969 0.17971 0.17976 0.17982 0.17989 0.17998 0.18008 0.18019 0.18031 0.18044 0.18058 0.18073 0.18088 0.18103 0.18119 0.18135 0.18151 0.18167 0.18182 0.18197 0.18212 0.18226 0.18239 0.18251 0.18261 0.18270 0.18277 0.18282 0.18284 0.18283 0.18279 0.18271 0.18257 0.18212 0.18133 0.17997 0.17753 0.17119 0.16290 Specific Heat cp , Btu/lb·°F Liquid Vapor 0.2276 0.2288 0.2300 0.2313 0.2327 0.2341 0.2356 0.2372 0.2387 0.2404 0.2421 0.2430 0.2439 0.2448 0.2457 0.2466 0.2476 0.2486 0.2496 0.2506 0.2516 0.2527 0.2538 0.2539 0.2549 0.2560 0.2572 0.2583 0.2595 0.2608 0.2621 0.2634 0.2647 0.2661 0.2675 0.2690 0.2706 0.2721 0.2738 0.2755 0.2773 0.2791 0.2810 0.2831 0.2852 0.2875 0.2898 0.2924 0.2950 0.2979 0.3009 0.3042 0.3078 0.3117 0.3159 0.3206 0.3258 0.3316 0.3382 0.3456 0.3543 0.3644 0.3910 0.4329 0.5103 0.7123 3.1100 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 3468 3386 3304 3223 3142 3062 2982 2902 2823 2745 2667 2629 2590 2552 2514 2476 2438 2400 2362 2324 2287 2250 2212 2209 2175 2138 2101 2064 2028 1991 1955 1918 1882 1845 1809 1773 1737 1700 1664 1628 1592 1555 1519 1483 1446 1410 1373 1336 1299 1262 1224 1186 1148 1110 1071 1031 992 951 911 869 827 785 698 607 512 406 277 0 356.9 362.1 367.2 372.2 377.1 381.8 386.4 390.8 395.0 398.9 402.7 404.5 406.2 407.8 409.4 410.9 412.3 413.6 414.9 416.1 417.1 418.1 419.0 419.1 419.8 420.5 421.1 421.6 422.0 422.3 422.4 422.4 422.4 422.1 421.8 421.3 420.7 420.0 419.1 418.1 416.9 415.6 414.1 412.4 410.6 408.6 406.4 404.0 401.4 398.7 395.7 392.5 389.1 385.4 381.5 377.4 373.0 368.3 363.3 358.0 352.4 346.4 333.3 318.4 301.5 282.0 257.1 0.0 4.898 4.223 3.68 3.237 2.871 2.565 2.306 2.085 1.894 1.728 1.582 1.516 1.454 1.395 1.339 1.287 1.237 1.19 1.145 1.103 1.062 1.024 0.987 0.984 0.952 0.918 0.886 0.856 0.826 0.798 0.771 0.746 0.721 0.697 0.674 0.652 0.631 0.610 0.59 0.571 0.553 0.535 0.518 0.501 0.485 0.469 0.454 0.439 0.425 0.411 0.398 0.384 0.371 0.359 0.346 0.334 0.322 0.311 0.299 0.288 0.277 0.265 0.243 0.220 0.195 0.168 0.127 — 0.0160 0.0165 0.0171 0.0176 0.0181 0.0186 0.0192 0.0197 0.0202 0.0207 0.0213 0.0215 0.0218 0.0221 0.0223 0.0226 0.0228 0.0231 0.0233 0.0236 0.0239 0.0241 0.0244 0.0244 0.0246 0.0249 0.0252 0.0254 0.0257 0.0259 0.0262 0.0265 0.0268 0.0270 0.0273 0.0276 0.0279 0.0282 0.0285 0.0288 0.0291 0.0294 0.0297 0.0300 0.0304 0.0307 0.0311 0.0315 0.0320 0.0324 0.0329 0.0333 0.0339 0.0344 0.0349 0.0355 0.0362 0.0369 0.0376 0.0384 0.0393 0.0402 0.0424 0.0453 0.0491 0.0551 0.0697 — 30.13 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0649 0.0639 0.0628 0.0618 0.0607 0.0596 0.0585 0.0574 0.0562 0.0551 0.0540 0.0534 0.0528 0.0522 0.0516 0.0511 0.0505 0.0499 0.0493 0.0487 0.0482 0.0476 0.0470 0.0470 0.0464 0.0459 0.0453 0.0447 0.0442 0.0436 0.0431 0.0425 0.0419 0.0414 0.0408 0.0403 0.0398 0.0392 0.0387 0.0382 0.0377 0.0371 0.0366 0.0361 0.0356 0.0351 0.0346 0.0342 0.0337 0.0332 0.0328 0.0323 0.0319 0.0314 0.0310 0.0305 0.0301 0.0297 0.0293 0.0289 0.0285 0.0281 0.0273 0.0266 0.0261 0.0260 0.0300 0.00275 0.00289 0.00304 0.00319 0.00335 0.00351 0.00367 0.00383 0.00400 0.00417 0.00435 0.00443 0.00452 0.00461 0.00470 0.00480 0.00489 0.00498 0.00508 0.00517 0.00527 0.00536 0.00546 0.00547 0.00556 0.00566 0.00577 0.00587 0.00597 0.00608 0.00619 0.00630 0.00641 0.00652 0.00664 0.00676 0.00688 0.00700 0.00713 0.00726 0.00739 0.00753 0.00768 0.00782 0.00798 0.00814 0.00830 0.00847 0.00867 0.00886 0.00906 0.00927 0.00950 0.00974 0.00999 0.01027 0.01056 0.01087 0.01121 0.01158 0.01198 0.01243 0.01348 0.01484 0.01673 0.01985 0.03063 26.26 25.47 24.69 23.92 23.15 22.38 21.62 20.86 20.11 19.36 18.61 18.24 17.88 17.51 17.14 16.78 16.41 16.05 15.69 15.33 14.97 14.62 14.26 14.23 13.91 13.56 13.21 12.86 12.51 12.16 11.82 11.48 11.14 10.80 10.46 10.12 9.79 9.46 9.13 8.80 8.48 8.15 7.83 7.51 7.20 6.88 6.57 6.26 5.95 5.65 5.35 5.05 4.75 4.46 4.17 3.88 3.60 3.32 3.05 2.78 2.51 2.25 1.74 1.25 0.80 0.39 0.05 0.00 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 10.47 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 210 220 230 240 250 252.1 point 0.1271 1.1298 0.1294 1.1274 0.1317 1.1253 0.1340 1.1233 0.1364 1.1215 0.1387 1.1200 0.1411 1.1187 0.1435 1.1176 0.1460 1.1168 0.1485 1.1163 0.1512 1.1162 0.1525 1.1162 0.1539 1.1164 0.1553 1.1166 0.1567 1.1169 0.1581 1.1173 0.1596 1.1179 0.1611 1.1185 0.1626 1.1193 0.1642 1.1201 0.1658 1.1211 0.1674 1.1222 0.1690 1.1235 0.1692 1.1236 0.1708 1.1249 0.1725 1.1264 0.1743 1.1281 0.1761 1.1300 0.1780 1.1320 0.1799 1.1342 0.1819 1.1365 0.1839 1.1391 0.1859 1.1419 0.1881 1.1450 0.1903 1.1482 0.1925 1.1517 0.1948 1.1556 0.1972 1.1597 0.1997 1.1641 0.2023 1.1689 0.2049 1.1741 0.2077 1.1797 0.2106 1.1858 0.2136 1.1925 0.2167 1.1997 0.2200 1.2075 0.2235 1.2161 0.2271 1.2255 0.2310 1.2358 0.2352 1.2472 0.2396 1.2598 0.2444 1.2737 0.2496 1.2892 0.2552 1.3066 0.2614 1.3262 0.2682 1.3484 0.2757 1.3737 0.2842 1.4028 0.2939 1.4365 0.3049 1.4759 0.3177 1.5227 0.3329 1.5788 0.3736 1.7330 0.4389 1.9870 0.5632 2.4776 0.8961 3.8005 4.6308 18.4768 boiling point *Temperatures on ITS-90 scale b Normal c Critical PressurePressure 30.14 2009 ASHRAE Handbook—Fundamentals Fig. 7 Pressure-Enthalpy Diagram for Refrigerant 125 Thermophysical Properties of Refrigerants Refrigerant 125 (Pentafluoroethane) Properties of Saturated Liquid and Saturated Vapor Temp.,a °F –149.13b –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –54.56c –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 150.84d Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.423 0.521 0.665 0.842 1.057 1.315 1.624 1.992 2.425 2.934 3.526 4.213 5.004 5.912 6.948 8.126 9.457 10.957 12.640 14.520 14.696 16.614 18.938 21.509 24.344 27.460 30.875 34.610 38.682 43.111 47.917 53.120 58.742 64.803 71.325 78.331 85.842 93.882 102.47 111.64 121.41 131.80 142.85 154.57 166.99 180.15 194.07 208.77 224.29 240.66 257.92 276.09 295.21 315.33 336.48 358.72 382.10 406.68 432.55 459.81 488.62 519.32 524.70 105.55 105.08 104.52 103.96 103.40 102.83 102.26 101.69 101.12 100.54 99.96 99.37 98.79 98.19 97.60 97.00 96.39 95.78 95.17 94.55 94.49 93.92 93.28 92.64 92.00 91.34 90.68 90.01 89.33 88.64 87.94 87.23 86.51 85.78 85.04 84.28 83.50 82.71 81.91 81.08 80.24 79.38 78.49 77.58 76.63 75.66 74.66 73.62 72.54 71.41 70.23 68.99 67.68 66.29 64.80 63.18 61.42 59.44 57.18 54.44 50.80 43.50 35.81 65.484 53.794 42.761 34.286 27.716 22.580 18.530 15.313 12.738 10.663 8.9787 7.6032 6.4729 5.5386 4.7621 4.1132 3.5682 3.1083 2.7182 2.3860 2.3591 2.1018 1.8577 1.6472 1.4649 1.3066 1.1686 1.0479 0.9419 0.8486 0.7662 0.6933 0.6285 0.5708 0.5193 0.4732 0.4318 0.3946 0.3610 0.3307 0.3032 0.2783 0.2556 0.2349 0.2160 0.1987 0.1829 0.1683 0.1549 0.1425 0.1310 0.1204 0.1105 0.1012 0.0925 0.0843 0.0766 0.0691 0.0618 0.0544 0.0465 0.0353 0.0279 –28.097 –27.074 –25.833 –24.590 –23.343 –22.092 –20.836 –19.576 –18.312 –17.043 –15.768 –14.488 –13.202 –11.911 –10.614 –9.311 –8.001 –6.685 –5.362 –4.032 –3.915 –2.696 –1.352 0.000 1.359 2.726 4.102 5.486 6.878 8.280 9.691 11.112 12.542 13.983 15.436 16.899 18.374 19.862 21.363 22.878 24.407 25.951 27.512 29.090 30.687 32.303 33.941 35.602 37.288 39.002 40.748 42.528 44.348 46.213 48.132 50.117 52.182 54.353 56.673 59.223 62.217 66.996 71.250 53.756 54.306 54.974 55.647 56.322 57.001 57.682 58.366 59.052 59.739 60.428 61.118 61.808 62.498 63.188 63.878 64.567 65.254 65.940 66.624 66.684 67.305 67.984 68.659 69.331 69.999 70.662 71.321 71.974 72.621 73.263 73.897 74.524 75.143 75.753 76.353 76.942 77.520 78.084 78.633 79.167 79.684 80.181 80.657 81.111 81.540 81.942 82.314 82.654 82.957 83.219 83.435 83.598 83.697 83.721 83.653 83.468 83.125 82.560 81.642 80.046 75.896 71.250 bTriple 30.15 Entropy, Btu/lb·°F Liquid –0.07725 –0.07398 –0.07007 –0.06621 –0.06240 –0.05864 –0.05491 –0.05123 –0.04759 –0.04399 –0.04043 –0.03690 –0.03340 –0.02993 –0.02650 –0.02309 –0.01972 –0.01637 –0.01305 –0.00975 –0.00946 –0.00648 –0.00323 0.00000 0.00321 0.00639 0.00956 0.01271 0.01584 0.01895 0.02205 0.02513 0.02820 0.03126 0.03430 0.03734 0.04037 0.04338 0.04639 0.04940 0.05240 0.05540 0.05839 0.06139 0.06439 0.06740 0.07041 0.07343 0.07647 0.07953 0.08261 0.08571 0.08886 0.09205 0.09530 0.09863 0.10205 0.10562 0.10940 0.11352 0.11832 0.12599 0.13292 Vapor 0.18633 0.18464 0.18271 0.18092 0.17925 0.17770 0.17625 0.17490 0.17365 0.17250 0.17142 0.17043 0.16951 0.16867 0.16789 0.16717 0.16651 0.16591 0.16536 0.16485 0.16481 0.16439 0.16398 0.16360 0.16326 0.16296 0.16269 0.16244 0.16223 0.16204 0.16187 0.16172 0.16159 0.16148 0.16138 0.16129 0.16121 0.16113 0.16106 0.16098 0.16090 0.16082 0.16073 0.16062 0.16050 0.16035 0.16019 0.15999 0.15976 0.15949 0.15918 0.15881 0.15837 0.15785 0.15723 0.15648 0.15556 0.15442 0.15293 0.15091 0.14781 0.14059 0.13292 Specific Heat cp , Btu/lb·°F Liquid 0.2473 0.2477 0.2483 0.2490 0.2498 0.2506 0.2514 0.2523 0.2533 0.2543 0.2553 0.2564 0.2575 0.2586 0.2598 0.2610 0.2623 0.2636 0.2649 0.2663 0.2664 0.2677 0.2691 0.2706 0.2722 0.2738 0.2754 0.2771 0.2789 0.2807 0.2826 0.2846 0.2867 0.2888 0.2911 0.2935 0.2961 0.2988 0.3016 0.3047 0.3079 0.3114 0.3152 0.3193 0.3237 0.3286 0.3340 0.3401 0.3469 0.3546 0.3635 0.3739 0.3863 0.4014 0.4202 0.4446 0.4777 0.5258 0.6029 0.7503 1.157 7.450 cNormal Vapor cp /cv Vapor Vel. of Sound, ft/s Liquid 3060 3020 2973 2926 2879 2833 2787 2742 2697 2652 2608 2563 2519 2476 2432 2388 2345 2302 2259 2216 2212 2173 2130 2087 2044 2001 1959 1916 1873 1830 1787 1745 1702 1659 1616 1573 1530 1487 1444 1401 1357 1314 1270 1226 1182 1137 1092 1047 1001 955 908 861 813 764 714 663 609 554 495 432 361 276 0 Vapor 382.0 384.2 386.7 389.2 391.7 394.1 396.4 398.7 400.8 402.9 405.0 406.9 408.7 410.5 412.1 413.6 415.1 416.4 417.6 418.6 418.7 419.6 420.4 421.1 421.6 422.0 422.3 422.4 422.3 422.1 421.7 421.1 420.3 419.4 418.2 416.8 415.3 413.5 411.5 409.3 406.8 404.1 401.2 397.9 394.5 390.7 386.6 382.3 377.6 372.5 367.1 361.2 354.9 348.2 340.9 333.1 324.6 315.5 305.5 294.7 282.8 266.9 0.0 Viscosity, lbm /ft·h Liquid 2.788 2.628 2.453 2.296 2.155 2.027 1.910 1.803 1.705 1.615 1.532 1.455 1.383 1.317 1.255 1.197 1.142 1.091 1.043 0.998 0.995 0.956 0.916 0.878 0.842 0.807 0.775 0.744 0.715 0.686 0.660 0.634 0.609 0.586 0.563 0.542 0.521 0.501 0.481 0.463 0.444 0.427 0.410 0.394 0.378 0.362 0.347 0.332 0.318 0.303 0.289 0.276 0.262 0.248 0.235 0.221 0.207 0.193 0.178 0.162 0.143 0.112 — Vapor 0.0180 0.0182 0.0185 0.0188 0.0191 0.0194 0.0197 0.0200 0.0203 0.0206 0.0209 0.0212 0.0214 0.0217 0.0220 0.0223 0.0226 0.0229 0.0232 0.0235 0.0235 0.0238 0.0240 0.0243 0.0246 0.0249 0.0252 0.0255 0.0258 0.0261 0.0264 0.0267 0.0270 0.0273 0.0276 0.0280 0.0283 0.0286 0.0290 0.0293 0.0297 0.0301 0.0305 0.0310 0.0314 0.0319 0.0324 0.0330 0.0335 0.0342 0.0349 0.0357 0.0365 0.0375 0.0386 0.0399 0.0415 0.0434 0.0458 0.0490 0.0542 0.0675 — Thermal Cond., Surface Btu/h·ft·°F Tension, Temp., Liquid Vapor dyne/cm °F 0.0671 0.0665 0.0657 0.0650 0.0642 0.0634 0.0627 0.0619 0.0612 0.0604 0.0596 0.0589 0.0581 0.0574 0.0566 0.0558 0.0551 0.0543 0.0536 0.0529 0.0528 0.0521 0.0514 0.0506 0.0499 0.0492 0.0484 0.0477 0.0470 0.0463 0.0456 0.0448 0.0441 0.0434 0.0427 0.0420 0.0413 0.0407 0.0400 0.0393 0.0386 0.0379 0.0373 0.0366 0.0359 0.0353 0.0346 0.0340 0.0333 0.0327 0.0320 0.0313 0.0307 0.0300 0.0294 0.0287 0.0281 0.0275 0.0269 0.0265 0.0268 0.0340 0.00303 0.00311 0.00322 0.00332 0.00342 0.00353 0.00364 0.00374 0.00385 0.00395 0.00406 0.00417 0.00428 0.00438 0.00449 0.00460 0.00471 0.00482 0.00493 0.00505 0.00506 0.00516 0.00527 0.00539 0.00550 0.00562 0.00574 0.00586 0.00598 0.00610 0.00622 0.00635 0.00648 0.00661 0.00674 0.00688 0.00702 0.00717 0.00732 0.00747 0.00764 0.00780 0.00798 0.00817 0.00837 0.00858 0.00880 0.00905 0.00931 0.00961 0.00993 0.01029 0.01071 0.01118 0.01173 0.01239 0.01320 0.01422 0.01559 0.01760 0.02115 0.03660 21.79 21.42 20.97 20.53 20.08 19.64 19.20 18.76 18.32 17.89 17.46 17.03 16.60 16.17 15.75 15.33 14.91 14.49 14.07 13.66 13.63 13.25 12.84 12.44 12.04 11.64 11.24 10.84 10.45 10.06 9.68 9.29 8.91 8.53 8.16 7.79 7.42 7.06 6.70 6.34 5.99 5.64 5.29 4.95 4.62 4.29 3.96 3.64 3.32 3.01 2.71 2.41 2.12 1.84 1.56 1.30 1.04 0.80 0.57 0.36 0.16 0.01 0.00 –149.13 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –54.56 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 150.84 point 0.1360 1.1416 0.1371 1.1407 0.1386 1.1397 0.1400 1.1389 0.1415 1.1381 0.1430 1.1375 0.1445 1.1369 0.1460 1.1365 0.1475 1.1362 0.1491 1.1361 0.1507 1.1360 0.1523 1.1361 0.1539 1.1364 0.1556 1.1368 0.1573 1.1373 0.1591 1.1380 0.1609 1.1389 0.1627 1.1399 0.1645 1.1411 0.1665 1.1425 0.1666 1.1426 0.1684 1.1441 0.1704 1.1459 0.1725 1.1479 0.1746 1.1502 0.1767 1.1527 0.1790 1.1554 0.1813 1.1585 0.1836 1.1618 0.1861 1.1655 0.1886 1.1695 0.1912 1.1738 0.1939 1.1787 0.1967 1.1840 0.1995 1.1898 0.2025 1.1963 0.2056 1.2035 0.2089 1.2116 0.2124 1.2206 0.2161 1.2307 0.2201 1.2422 0.2245 1.2551 0.2293 1.2697 0.2346 1.2862 0.2406 1.3051 0.2473 1.3266 0.2548 1.3512 0.2634 1.3797 0.2731 1.4127 0.2844 1.4515 0.2976 1.4975 0.3132 1.5528 0.3318 1.6203 0.3548 1.7047 0.3838 1.8130 0.4216 1.9569 0.4737 2.1572 0.5503 2.4550 0.6752 2.9435 0.9161 3.8890 1.5777 6.4763 10.633 41.334 boiling point aTemperatures on ITS-90 scale point dCritical Pressure 30.16 2009 ASHRAE Handbook—Fundamentals Fig. 8 Pressure-Enthalpy Diagram for Refrigerant 134a Thermophysical Properties of Refrigerants Refrigerant 134a (1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –153.94a –150 –140 –130 –120 –110 –100 –90 –80 –75 –70 –65 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 –14.93b –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 213.91c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.057 0.072 0.129 0.221 0.365 0.583 0.903 1.359 1.993 2.392 2.854 3.389 4.002 4.703 5.501 6.406 7.427 8.576 9.862 11.299 12.898 14.671 14.696 16.632 18.794 21.171 23.777 26.628 29.739 33.124 36.800 40.784 45.092 49.741 54.749 60.134 65.913 72.105 78.729 85.805 93.351 101.39 109.93 119.01 128.65 138.85 149.65 161.07 173.14 185.86 199.28 213.41 228.28 243.92 260.36 277.61 295.73 314.73 334.65 355.53 377.41 400.34 424.36 449.52 475.91 503.59 532.68 563.35 588.75 99.33 98.97 98.05 97.13 96.20 95.27 94.33 93.38 92.42 91.94 91.46 90.97 90.49 90.00 89.50 89.00 88.50 88.00 87.49 86.98 86.47 85.95 85.94 85.43 84.90 84.37 83.83 83.29 82.74 82.19 81.63 81.06 80.49 79.90 79.32 78.72 78.11 77.50 76.87 76.24 75.59 74.94 74.27 73.58 72.88 72.17 71.44 70.69 69.93 69.14 68.32 67.49 66.62 65.73 64.80 63.83 62.82 61.76 60.65 59.47 58.21 56.86 55.38 53.76 51.91 49.76 47.08 43.20 31.96 568.59 452.12 260.63 156.50 97.481 62.763 41.637 28.381 19.825 16.711 14.161 12.060 10.321 8.8733 7.6621 6.6438 5.7839 5.0544 4.4330 3.9014 3.4449 3.0514 3.0465 2.7109 2.4154 2.1579 1.9330 1.7357 1.5623 1.4094 1.2742 1.1543 1.0478 0.9528 0.8680 0.7920 0.7238 0.6625 0.6072 0.5572 0.5120 0.4710 0.4338 0.3999 0.3690 0.3407 0.3148 0.2911 0.2693 0.2493 0.2308 0.2137 0.1980 0.1833 0.1697 0.1571 0.1453 0.1343 0.1239 0.1142 0.1051 0.0964 0.0881 0.0801 0.0724 0.0647 0.0567 0.0477 0.0313 –32.992 –31.878 –29.046 –26.208 –23.360 –20.500 –17.626 –14.736 –11.829 –10.368 –8.903 –7.432 –5.957 –4.476 –2.989 –1.498 0.000 1.503 3.013 4.529 6.051 7.580 7.600 9.115 10.657 12.207 13.764 15.328 16.901 18.481 20.070 21.667 23.274 24.890 26.515 28.150 29.796 31.452 33.120 34.799 36.491 38.195 39.913 41.645 43.392 45.155 46.934 48.731 50.546 52.382 54.239 56.119 58.023 59.954 61.915 63.908 65.936 68.005 70.118 72.283 74.509 76.807 79.193 81.692 84.343 87.214 90.454 94.530 103.894 80.362 80.907 82.304 83.725 85.168 86.629 88.107 89.599 91.103 91.858 92.614 93.372 94.131 94.890 95.650 96.409 97.167 97.924 98.679 99.433 100.184 100.932 100.942 101.677 102.419 103.156 103.889 104.617 105.339 106.056 106.767 107.471 108.167 108.856 109.537 110.209 110.871 111.524 112.165 112.796 113.414 114.019 114.610 115.186 115.746 116.289 116.813 117.317 117.799 118.258 118.690 119.095 119.468 119.807 120.108 120.366 120.576 120.731 120.823 120.842 120.773 120.598 120.294 119.822 119.123 118.097 116.526 113.746 103.894 Entropy, Btu/lb·°F Liquid –0.09154 –0.08791 –0.07891 –0.07017 –0.06166 –0.05337 –0.04527 –0.03734 –0.02959 –0.02577 –0.02198 –0.01824 –0.01452 –0.01085 –0.00720 –0.00358 0.00000 0.00356 0.00708 0.01058 0.01406 0.01751 0.01755 0.02093 0.02433 0.02771 0.03107 0.03440 0.03772 0.04101 0.04429 0.04755 0.05079 0.05402 0.05724 0.06044 0.06362 0.06680 0.06996 0.07311 0.07626 0.07939 0.08252 0.08565 0.08877 0.09188 0.09500 0.09811 0.10123 0.10435 0.10748 0.11062 0.11376 0.11692 0.12010 0.12330 0.12653 0.12979 0.13309 0.13644 0.13985 0.14334 0.14693 0.15066 0.15459 0.15880 0.16353 0.16945 0.18320 Vapor 0.27923 0.27629 0.26941 0.26329 0.25784 0.25300 0.24871 0.24490 0.24152 0.23998 0.23854 0.23718 0.23590 0.23470 0.23358 0.23252 0.23153 0.23060 0.22973 0.22892 0.22816 0.22744 0.22743 0.22678 0.22615 0.22557 0.22502 0.22451 0.22403 0.22359 0.22317 0.22278 0.22241 0.22207 0.22174 0.22144 0.22115 0.22088 0.22062 0.22037 0.22013 0.21989 0.21966 0.21944 0.21921 0.21898 0.21875 0.21851 0.21826 0.21800 0.21772 0.21742 0.21709 0.21673 0.21634 0.21591 0.21542 0.21488 0.21426 0.21356 0.21274 0.21180 0.21069 0.20935 0.20771 0.20562 0.20275 0.19814 0.18320 Specific Heat cp , Btu/lb·°F Liquid Vapor 0.2829 0.2830 0.2834 0.2842 0.2853 0.2866 0.2881 0.2898 0.2916 0.2925 0.2935 0.2945 0.2955 0.2965 0.2976 0.2987 0.2999 0.3010 0.3022 0.3035 0.3047 0.3060 0.3061 0.3074 0.3088 0.3102 0.3117 0.3132 0.3147 0.3164 0.3181 0.3198 0.3216 0.3235 0.3255 0.3275 0.3297 0.3319 0.3343 0.3368 0.3394 0.3422 0.3451 0.3482 0.3515 0.3551 0.3589 0.3630 0.3675 0.3723 0.3775 0.3833 0.3897 0.3968 0.4048 0.4138 0.4242 0.4362 0.4504 0.4675 0.4887 0.5156 0.5512 0.6012 0.6768 0.8062 1.0830 2.1130 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 3674 3638 3545 3452 3360 3269 3178 3087 2998 2954 2909 2866 2822 2778 2735 2691 2648 2605 2563 2520 2477 2435 2434 2393 2350 2308 2266 2224 2182 2140 2098 2056 2014 1973 1931 1889 1847 1805 1763 1721 1679 1636 1594 1551 1509 1466 1423 1380 1337 1294 1250 1206 1162 1117 1072 1027 980 934 886 837 786 734 680 624 565 502 436 363 0 416.0 418.3 424.2 429.9 435.5 440.8 446.0 450.9 455.6 457.8 460.0 462.1 464.1 466.0 467.8 469.6 471.2 472.8 474.2 475.6 476.8 477.9 477.9 478.9 479.8 480.5 481.1 481.6 482.0 482.2 482.2 482.2 481.9 481.5 481.0 480.3 479.4 478.3 477.0 475.6 474.0 472.2 470.1 467.9 465.4 462.7 459.8 456.7 453.2 449.6 445.6 441.4 436.8 432.0 426.8 421.2 415.3 409.1 402.4 395.3 387.7 379.6 371.0 361.8 352.0 341.3 329.4 315.5 0.0 b Normal 30.17 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0840 0.0832 0.0813 0.0794 0.0775 0.0757 0.0739 0.0722 0.0705 0.0696 0.0688 0.0680 0.0671 0.0663 0.0655 0.0647 0.0639 0.0632 0.0624 0.0616 0.0608 0.0601 0.0601 0.0593 0.0586 0.0578 0.0571 0.0564 0.0556 0.0549 0.0542 0.0535 0.0528 0.0521 0.0514 0.0507 0.0500 0.0493 0.0486 0.0479 0.0472 0.0465 0.0458 0.0451 0.0444 0.0437 0.0431 0.0424 0.0417 0.0410 0.0403 0.0396 0.0389 0.0382 0.0375 0.0368 0.0361 0.0354 0.0346 0.0339 0.0332 0.0325 0.0318 0.0311 0.0304 0.0300 0.0300 0.0316 0.00178 0.00188 0.00214 0.00240 0.00265 0.00291 0.00317 0.00343 0.00369 0.00382 0.00395 0.00408 0.00420 0.00433 0.00446 0.00460 0.00473 0.00486 0.00499 0.00512 0.00525 0.00538 0.00538 0.00552 0.00565 0.00578 0.00592 0.00605 0.00619 0.00632 0.00646 0.00660 0.00674 0.00688 0.00703 0.00717 0.00732 0.00747 0.00762 0.00777 0.00793 0.00809 0.00825 0.00842 0.00860 0.00878 0.00897 0.00916 0.00936 0.00958 0.00981 0.01005 0.01031 0.01058 0.01089 0.01122 0.01158 0.01199 0.01245 0.01297 0.01358 0.01430 0.01516 0.01623 0.01760 0.01949 0.02240 0.02848 28.07 27.69 26.74 25.79 24.85 23.92 22.99 22.07 21.16 20.71 20.26 19.81 19.36 18.92 18.47 18.03 17.60 17.16 16.73 16.30 15.87 15.44 15.44 15.02 14.60 14.18 13.76 13.35 12.94 12.53 12.12 11.72 11.32 10.92 10.53 10.14 9.75 9.36 8.98 8.60 8.23 7.86 7.49 7.13 6.77 6.41 6.06 5.71 5.36 5.03 4.69 4.36 4.04 3.72 3.40 3.09 2.79 2.50 2.21 1.93 1.66 1.39 1.14 0.90 0.67 0.45 0.26 0.09 0.00 –153.94 –150 –140 –130 –120 –110 –100 –90 –80 –75 –70 –65 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 –14.93 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 213.91 point 0.1399 1.1637 0.1411 1.1623 0.1443 1.1589 0.1475 1.1559 0.1508 1.1532 0.1540 1.1509 0.1573 1.1490 0.1607 1.1475 0.1641 1.1465 0.1658 1.1462 0.1676 1.1460 0.1694 1.1459 0.1713 1.1460 0.1731 1.1462 0.1751 1.1466 0.1770 1.1471 0.1790 1.1478 0.1811 1.1486 0.1832 1.1496 0.1853 1.1508 0.1875 1.1521 0.1898 1.1537 0.1898 1.1537 0.1921 1.1554 0.1945 1.1573 0.1969 1.1595 0.1995 1.1619 0.2021 1.1645 0.2047 1.1674 0.2075 1.1705 0.2103 1.1740 0.2132 1.1777 0.2163 1.1818 0.2194 1.1862 0.2226 1.1910 0.2260 1.1961 0.2294 1.2018 0.2331 1.2079 0.2368 1.2145 0.2408 1.2217 0.2449 1.2296 0.2492 1.2382 0.2537 1.2475 0.2585 1.2578 0.2636 1.2690 0.2690 1.2813 0.2747 1.2950 0.2809 1.3101 0.2875 1.3268 0.2948 1.3456 0.3026 1.3666 0.3112 1.3903 0.3208 1.4173 0.3315 1.4481 0.3435 1.4837 0.3571 1.5250 0.3729 1.5738 0.3914 1.6318 0.4133 1.7022 0.4400 1.7889 0.4733 1.8984 0.5159 2.0405 0.5729 2.2321 0.6532 2.5041 0.7751 2.9192 0.9835 3.6309 1.4250 5.1360 3.0080 10.5120 5.262 4.790 3.880 3.238 2.762 2.396 2.105 1.869 1.673 1.587 1.509 1.436 1.369 1.306 1.248 1.193 1.142 1.095 1.050 1.007 0.968 0.930 0.929 0.894 0.860 0.828 0.798 0.769 0.741 0.715 0.689 0.665 0.642 0.620 0.598 0.578 0.558 0.539 0.520 0.503 0.485 0.469 0.453 0.437 0.422 0.407 0.393 0.378 0.365 0.351 0.338 0.325 0.313 0.301 0.288 0.276 0.264 0.253 0.241 0.229 0.218 0.206 0.194 0.182 0.169 0.155 0.140 0.120 — 0.0156 0.0159 0.0164 0.0170 0.0176 0.0182 0.0187 0.0193 0.0199 0.0201 0.0204 0.0207 0.0210 0.0212 0.0215 0.0218 0.0221 0.0223 0.0226 0.0229 0.0231 0.0234 0.0234 0.0237 0.0240 0.0242 0.0245 0.0248 0.0250 0.0253 0.0256 0.0258 0.0261 0.0264 0.0267 0.0270 0.0273 0.0275 0.0278 0.0281 0.0284 0.0287 0.0291 0.0294 0.0297 0.0301 0.0304 0.0308 0.0312 0.0316 0.0320 0.0324 0.0329 0.0334 0.0339 0.0344 0.0350 0.0357 0.0364 0.0372 0.0381 0.0391 0.0403 0.0417 0.0435 0.0457 0.0489 0.0543 — *Temperatures on ITS-90 scale a Triple point boiling point c Critical 30.18 Refrigerant 134a Pressure = 14.696 psia Saturation temperature = 14.92°F Temp.,* °F Saturated Liquid Vapor 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 Density, Enthalpy, Entropy, Vel. Sound, Btu/lb Btu/lb· °F ft/s lb/ft3 85.7972 0.3283 0.3158 0.3008 0.2874 0.2753 0.2642 0.2541 0.2448 0.2362 0.2282 0.2208 0.2139 0.2074 0.2013 0.1955 0.1901 0.1850 7.53 100.81 103.62 107.45 111.34 115.31 119.35 123.47 127.68 131.96 136.32 140.77 145.30 149.90 154.59 159.36 164.20 169.12 0.01739 0.22713 0.23335 0.24149 0.24944 0.25723 0.26486 0.27236 0.27974 0.28700 0.29416 0.30122 0.30819 0.31507 0.32187 0.32858 0.33522 0.34178 2451.2 478.0 487.2 499.0 510.2 521.0 531.5 541.6 551.4 561.0 570.4 579.5 588.5 597.3 606.0 614.5 622.8 631.1 Temp.,* °F Saturated Liquid Vapor 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 2009 ASHRAE Handbook—Fundamentals Properties of Superheated Vapor Pressure = 50.00 psia Saturation temperature = 40.29°F Temp.,* °F Saturated Liquid Vapor Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 79.8125 1.0545 24.79 108.74 0.05377 0.22170 1982.3 481.7 Pressure = 25.00 psia Saturation temperature = 7.22°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 83.4823 0.5426 0.5245 0.4991 0.4765 0.4563 0.4379 0.4212 0.4058 0.3916 0.3786 0.3663 0.3549 0.3443 0.3343 0.3248 0.3160 14.32 104.07 106.60 110.61 114.66 118.78 122.96 127.22 131.55 135.95 140.43 144.98 149.61 154.32 159.10 163.96 168.90 0.03224 0.22446 0.22982 0.23800 0.24596 0.25373 0.26135 0.26881 0.27615 0.28337 0.29048 0.29750 0.30441 0.31124 0.31798 0.32464 0.33122 2263.9 481.5 489.9 502.4 514.1 525.4 536.2 546.6 556.7 566.5 576.0 585.3 594.4 603.3 612.0 620.6 629.0 60 80 100 120 140 160 180 200 220 240 260 280 300 0.9982 0.9489 0.9055 0.8670 0.8322 0.8008 0.7718 0.7454 0.7208 0.6980 0.6768 0.6569 0.6383 113.00 117.32 121.68 126.07 130.51 135.01 139.57 144.20 148.89 153.65 158.48 163.38 168.35 0.23005 0.23822 0.24614 0.25385 0.26139 0.26877 0.27601 0.28313 0.29014 0.29704 0.30385 0.31056 0.31719 496.2 509.8 522.5 534.5 545.8 556.7 567.2 577.4 587.2 596.8 606.1 615.2 624.1 Pressure = 75.00 psia Saturation temperature = 62.24°F Temp.,* °F Saturated Liquid Vapor 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 77.1862 1.5686 1.4873 1.4092 1.3416 1.2822 1.2294 1.1817 1.1383 1.0984 1.0620 1.0280 0.9966 0.9671 0.9398 0.9138 0.8895 0.8665 0.8448 31.98 111.67 115.74 120.30 124.85 129.43 134.04 138.69 143.39 148.15 152.97 157.85 162.79 167.80 172.87 178.01 183.21 188.48 193.82 0.06775 0.22042 0.22809 0.23639 0.24439 0.25215 0.25971 0.26710 0.27434 0.28145 0.28843 0.29531 0.30208 0.30876 0.31535 0.32186 0.32828 0.33463 0.34091 1793.6 478.1 492.7 507.7 521.6 534.5 546.6 558.2 569.2 579.8 590.1 600.0 609.7 619.0 628.2 637.1 645.9 654.5 662.9 Temp.,* °F Saturated Liquid Vapor 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 Pressure = 100.00 psia Saturation temperature = 79.17°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 75.0245 2.0917 2.0858 1.9576 1.8509 1.7597 1.6800 1.6094 1.5463 1.4891 1.4368 1.3886 1.3444 1.3031 1.2647 1.2287 1.1950 1.1633 1.1334 37.69 113.78 113.98 118.80 123.55 128.29 133.02 137.78 142.57 147.40 152.27 157.21 162.19 167.24 172.35 177.52 182.75 188.04 193.39 0.07840 0.21960 0.21998 0.22874 0.23709 0.24512 0.25288 0.26044 0.26781 0.27502 0.28210 0.28905 0.29588 0.30261 0.30925 0.31579 0.32225 0.32863 0.33494 1646.8 472.8 473.6 491.6 507.8 522.4 536.0 548.8 560.8 572.3 583.3 593.9 604.1 614.0 623.6 632.9 642.1 651.0 659.8 Temp.,* °F Saturated Liquid Vapor 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 Pressure = 125.00 psia Saturation temperature = 93.15°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 73.1279 2.6279 2.5638 2.4025 2.2694 2.1561 2.0577 1.9710 1.8935 1.8233 1.7592 1.7006 1.6463 1.5959 1.5492 1.5055 1.4644 1.4258 42.53 115.41 117.16 122.16 127.08 131.96 136.83 141.71 146.62 151.56 156.55 161.59 166.67 171.82 177.02 182.27 187.59 192.97 0.08715 0.21898 0.22212 0.23090 0.23924 0.24725 0.25498 0.26250 0.26983 0.27700 0.28402 0.29093 0.29771 0.30440 0.31098 0.31747 0.32388 0.33021 1524.7 466.7 473.9 492.9 509.7 525.0 539.0 552.2 564.6 576.4 587.6 598.4 608.8 618.9 628.7 638.2 647.5 656.6 Pressure = 150.00 psia Saturation temperature = 105.17°F Temp.,* °F Saturated Liquid Vapor 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Density, Enthalpy, Entropy, Vel. Sound, Btu/lb Btu/lb· °F ft/s lb/ft3 71.4013 3.1801 3.0077 2.8181 2.6620 2.5295 2.4146 2.3132 2.2223 2.1401 2.0658 1.9971 1.9338 1.8751 1.8208 1.7695 1.7216 1.6766 1.6341 1.5940 1.5558 1.5197 46.78 116.71 120.64 125.78 130.83 135.83 140.82 145.82 150.83 155.88 160.97 166.10 171.28 176.51 181.80 187.14 192.54 198.00 203.51 209.08 214.71 220.40 0.09464 0.21844 0.22530 0.23403 0.24231 0.25026 0.25794 0.26539 0.27267 0.27978 0.28675 0.29360 0.30033 0.30696 0.31349 0.31993 0.32628 0.33256 0.33876 0.34488 0.35094 0.35692 1419.1 460.0 476.6 496.0 513.3 528.9 543.3 556.7 569.3 581.3 592.7 603.7 614.2 624.5 634.4 644.0 653.4 662.6 671.6 680.4 689.0 697.4 Temp.,* °F Saturated Liquid Vapor 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 175.00 psia Saturation temperature = 115.76°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 69.7902 3.7511 3.6836 3.4148 3.2025 3.0271 2.8785 2.7494 2.6349 2.5328 2.4403 2.3558 2.2785 2.2071 2.1411 2.0795 2.0216 1.9675 1.9164 1.8683 1.8228 1.7797 50.62 117.76 118.95 124.38 129.64 134.79 139.90 144.99 150.08 155.19 160.34 165.51 170.73 176 181.32 186.69 192.11 197.59 203.12 208.71 214.36 220.05 0.10126 0.21794 0.21999 0.22921 0.23783 0.24602 0.25388 0.26148 0.26887 0.27607 0.28312 0.29003 0.29681 0.30348 0.31004 0.31651 0.32290 0.32920 0.33542 0.34156 0.34763 0.35363 1325.3 453.0 458.4 481.3 500.9 518.3 534.0 548.5 562.1 574.8 586.9 598.5 609.5 620.2 630.5 640.5 650.3 659.7 669.0 678.0 686.9 695.6 Temp.,* °F Saturated Liquid Vapor 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 200.00 psia Saturation temperature = 125.27°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 68.2602 4.3437 4.0726 3.7850 3.5561 3.3656 3.2036 3.0623 2.9371 2.8247 2.7234 2.6305 2.5455 2.4668 2.3934 2.3254 2.2614 2.2017 2.1453 2.0920 2.0417 54.14 118.61 122.86 128.36 133.70 138.94 144.14 149.31 154.50 159.69 164.92 170.18 175.49 180.83 186.23 191.68 197.18 202.73 208.34 214.00 219.71 0.10721 0.21743 0.22460 0.23363 0.24210 0.25018 0.25793 0.26544 0.27274 0.27987 0.28684 0.29368 0.30039 0.30700 0.31350 0.31991 0.32624 0.33248 0.33864 0.34473 0.35075 1240.5 445.6 465.2 487.8 507.2 524.5 540.2 554.7 568.3 581.1 593.2 604.8 615.9 626.7 637.0 647.1 656.9 666.4 675.7 684.8 693.7 *Temperatures on ITS-90 scale Thermophysical Properties of Refrigerants Refrigerant 134a Properties of Superheated Vapor (Concluded) Pressure = 225.00 psia Saturation temperature = 133.93°F Temp.,* °F Saturated Liquid Vapor 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 66.7870 4.9609 4.8123 4.4191 4.1206 3.8796 3.6784 3.5058 3.3542 3.2202 3.0995 2.9899 2.8897 2.7978 2.7122 2.6330 2.5592 2.4900 2.4249 2.3636 2.3057 57.42 119.30 121.16 126.99 132.54 137.94 143.25 148.52 153.78 159.04 164.32 169.62 174.97 180.35 185.77 191.24 196.77 202.34 207.96 213.64 219.36 0.11266 0.21690 0.22002 0.22959 0.23840 0.24671 0.25465 0.26229 0.26970 0.27691 0.28395 0.29084 0.29761 0.30425 0.31079 0.31723 0.32358 0.32984 0.33603 0.34213 0.34816 1162.8 438.1 447.3 473.6 495.5 514.6 531.6 547.2 561.6 575.1 587.9 600.0 611.7 622.8 633.6 644.0 654.0 663.9 673.4 682.8 691.9 Temp.,* °F Saturated Liquid Vapor 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 250.00 psia Saturation temperature = 141.89°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 65.3526 5.6060 5.1189 4.7275 4.4239 4.1756 3.9664 3.7854 3.6265 3.4847 3.3571 3.2408 3.1342 3.0359 2.9451 2.8604 2.7813 2.7072 2.6374 2.5717 60.50 119.84 125.49 131.31 136.89 142.34 147.71 153.05 158.37 163.71 169.06 174.44 179.85 185.31 190.81 196.35 201.94 207.58 213.27 219.02 0.11770 0.21634 0.22560 0.23484 0.24343 0.25156 0.25935 0.26688 0.27418 0.28129 0.28824 0.29506 0.30175 0.30832 0.31479 0.32117 0.32745 0.33365 0.33977 0.34582 1090.7 430.3 458.2 483.1 504.2 522.8 539.5 554.9 569.2 582.6 595.3 607.4 618.9 630.1 640.8 651.2 661.3 671.1 680.7 690.1 Temp.,* °F Saturated Liquid Vapor 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 275.00 psia Saturation temperature = 149.27°F 30.19 Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 63.9423 6.2831 5.9060 5.3869 5.0031 4.6978 4.4465 4.2314 4.0446 3.8803 3.7317 3.5987 3.4764 3.3646 3.2612 3.1653 3.0758 2.9922 2.9136 2.8397 63.43 120.25 123.82 129.98 135.78 141.38 146.87 152.30 157.69 163.08 168.49 173.91 179.36 184.84 190.37 195.93 201.55 207.20 212.91 218.67 0.12241 0.21572 0.22155 0.23133 0.24026 0.24862 0.25658 0.26423 0.27162 0.27881 0.28583 0.29270 0.29943 0.30604 0.31254 0.31894 0.32525 0.33147 0.33761 0.34368 1023.4 422.3 441.2 469.9 493.4 513.7 531.7 548.0 563.1 577.2 590.5 603.1 615.1 626.6 637.7 648.4 658.8 668.9 678.7 688.3 Pressure = 300.00 psia Saturation temperature = 156.16°F Temp.,* °F Saturated Liquid Vapor 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Density, Enthalpy, Entropy, Vel. Sound, Btu/lb Btu/lb· °F ft/s lb/ft3 62.5436 6.9967 6.8168 6.1118 5.6239 5.2494 4.9472 4.6939 4.4758 4.2852 4.1160 3.9631 3.8247 3.6981 3.5816 3.4737 3.3735 3.2799 3.1922 3.1098 66.23 120.54 121.92 128.55 134.61 140.39 146.00 151.52 157.00 162.45 167.90 173.37 178.85 184.37 189.92 195.51 201.15 206.83 212.55 218.32 0.12686 0.21505 0.21730 0.22782 0.23715 0.24578 0.25393 0.26171 0.26921 0.27649 0.28357 0.29049 0.29727 0.30392 0.31045 0.31688 0.32321 0.32945 0.33561 0.34169 959.8 414.2 422.0 455.8 482.1 504.3 523.7 541.1 557.0 571.8 585.7 598.8 611.2 623.1 634.6 645.6 656.3 666.6 676.7 686.5 Temp.,* °F Saturated Liquid Vapor 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 325.00 psia Saturation temperature = 162.62°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 61.1446 7.7526 6.9220 6.2928 5.8341 5.4723 5.1741 4.9208 4.7017 4.5082 4.3352 4.1790 4.0368 3.9063 3.7859 3.6743 3.5703 3.4731 3.3819 68.92 120.71 126.96 133.36 139.34 145.10 150.73 156.29 161.81 167.31 172.82 178.35 183.90 189.48 195.09 200.75 206.44 212.19 217.97 0.13110 0.21431 0.22423 0.23408 0.24301 0.25136 0.25930 0.26692 0.27428 0.28144 0.28841 0.29524 0.30193 0.30849 0.31495 0.32131 0.32757 0.33375 0.33984 899.5 405.9 440.3 470.2 494.5 515.5 534.0 550.9 566.4 580.9 594.5 607.4 619.7 631.5 642.8 653.8 664.4 674.7 684.7 Temp.,* °F Saturated Liquid Vapor 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 350.00 psia Saturation temperature = 168.71°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 59.7334 8.5577 7.8491 7.0242 6.4561 6.0219 5.6728 5.3805 5.1295 4.9098 4.7148 4.5396 4.3807 4.2355 4.1019 3.9784 3.8636 3.7564 3.6561 71.54 120.76 125.18 132.01 138.24 144.17 149.91 155.56 161.15 166.72 172.27 177.84 183.42 189.03 194.67 200.35 206.06 211.82 217.62 0.13516 0.21349 0.22046 0.23098 0.24029 0.24888 0.25698 0.26472 0.27218 0.27941 0.28644 0.29332 0.30005 0.30665 0.31313 0.31952 0.32580 0.33199 0.33811 841.7 397.5 423.2 457.6 484.4 507.1 526.9 544.7 561.0 576.1 590.2 603.6 616.3 628.4 640.1 651.4 662.2 672.8 683.0 Pressure = 375.00 psia Saturation temperature = 174.46°F Temp.,* °F Saturated Liquid Vapor 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 58.2974 9.4209 8.9498 7.8311 7.1211 6.6028 6.1926 5.8555 5.5694 5.3212 5.1022 4.9066 4.7300 4.5692 4.4217 4.2857 4.1596 4.0421 3.9323 74.09 120.69 123.10 130.54 137.08 143.19 149.07 154.82 160.49 166.11 171.72 177.32 182.94 188.58 194.24 199.94 205.68 211.46 217.28 0.13908 0.21256 0.21634 0.22781 0.23758 0.24644 0.25473 0.26260 0.27016 0.27747 0.28457 0.29149 0.29826 0.30490 0.31141 0.31782 0.32413 0.33034 0.33647 785.9 389.0 403.8 444.1 474.0 498.5 519.6 538.4 555.5 571.3 586.0 599.8 612.9 625.4 637.4 648.9 660.1 670.8 681.3 Temp.,* °F Saturated Liquid Vapor 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 Pressure = 400.00 psia Saturation temperature = 197.93°F Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 56.8213 10.3541 10.3454 8.7370 7.8399 7.2145 6.7351 6.3472 6.0221 5.7425 5.4977 5.2802 5.0848 4.9075 4.7454 4.5964 4.4584 4.3303 4.2107 76.60 120.50 120.53 128.93 135.85 142.18 148.21 154.06 159.81 165.49 171.15 176.80 182.45 188.12 193.82 199.54 205.30 211.09 216.93 0.14289 0.21152 0.21158 0.22451 0.23484 0.24403 0.25252 0.26055 0.26821 0.27560 0.28277 0.28975 0.29656 0.30323 0.30978 0.31621 0.32254 0.32878 0.33492 731.8 380.4 380.6 429.5 463.0 489.7 512.3 532.1 550.0 566.5 581.7 596.0 609.5 622.4 634.7 646.5 657.9 669.0 679.6 Pressure = 600.00 psia Saturation temperature = n/a (supercritical) Temp.,* °F Saturated Liquid Vapor Density, Enthalpy, Entropy, Vel. Sound, lb/ft3 Btu/lb Btu/lb· °F ft/s 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 19.6784 14.2159 12.2674 11.0672 10.2049 9.5351 8.9895 8.5305 8.1351 7.7885 7.4804 7.2035 6.9523 6.7229 6.5118 118.27 131.50 139.92 147.15 153.83 160.21 166.39 172.45 178.45 184.40 190.34 196.26 202.20 208.15 214.12 0.20421 0.22343 0.23530 0.24522 0.25413 0.26241 0.27024 0.27774 0.28496 0.29197 0.29879 0.30546 0.31198 0.31838 0.32467 340.3 409.1 449.7 480.8 506.7 529.2 549.2 567.5 584.4 600.1 615.0 629.0 642.4 655.3 667.6 *Temperatures on ITS-90 scale Pressure 30.20 2009 ASHRAE Handbook—Fundamentals Fig. 9 Pressure-Enthalpy Diagram for Refrigerant 143a Thermophysical Properties of Refrigerants Refrigerant 143a (1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –169.26a –165 –160 –155 –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –53.03b –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 162.87c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.156 0.199 0.261 0.340 0.438 0.559 0.707 0.887 1.103 1.362 1.670 2.033 2.459 2.955 3.530 4.194 4.955 5.825 6.813 7.931 9.191 10.606 12.187 13.950 14.696 15.907 18.074 20.464 23.094 25.979 29.135 32.579 36.329 40.401 44.813 49.584 54.733 60.277 66.237 72.632 79.482 86.808 94.630 102.97 111.85 121.29 131.32 141.95 153.22 165.14 177.74 191.05 205.09 219.89 235.48 251.89 269.14 287.29 306.35 326.37 347.38 369.44 392.60 416.90 442.43 469.27 497.54 527.46 545.49 83.06 82.71 82.29 81.87 81.44 81.02 80.59 80.17 79.74 79.30 78.87 78.43 78.00 77.56 77.11 76.67 76.22 75.77 75.32 74.86 74.40 73.94 73.47 73.00 72.82 72.53 72.05 71.57 71.08 70.59 70.09 69.59 69.08 68.57 68.04 67.52 66.98 66.44 65.89 65.33 64.76 64.18 63.59 62.99 62.37 61.75 61.10 60.45 59.77 59.08 58.36 57.63 56.87 56.08 55.26 54.41 53.52 52.59 51.61 50.56 49.45 48.25 46.95 45.50 43.86 41.93 39.48 35.70 26.91 237.18 188.87 145.98 113.97 89.843 71.465 57.335 46.374 37.797 31.032 25.654 21.347 17.874 15.054 12.751 10.857 9.2915 7.9899 6.9019 5.9879 5.2164 4.5621 4.0046 3.5277 3.3592 3.1181 2.7648 2.4589 2.1932 1.9615 1.7589 1.5811 1.4246 1.2864 1.1640 1.0554 0.9587 0.8724 0.7951 0.7259 0.6636 0.6075 0.5569 0.5110 0.4695 0.4317 0.3973 0.3659 0.3373 0.3110 0.2869 0.2648 0.2444 0.2256 0.2082 0.1920 0.1770 0.1631 0.1500 0.1378 0.1263 0.1155 0.1051 0.0952 0.0856 0.0760 0.0660 0.0541 0.0372 –39.089 –37.856 –36.406 –34.954 –33.499 –32.041 –30.579 –29.112 –27.640 –26.163 –24.681 –23.193 –21.699 –20.198 –18.691 –17.176 –15.655 –14.126 –12.590 –11.046 –9.494 –7.934 –6.365 –4.787 –4.164 –3.201 –1.605 0.000 1.615 3.240 4.875 6.520 8.177 9.845 11.524 13.216 14.920 16.637 18.367 20.112 21.870 23.644 25.434 27.241 29.064 30.906 32.768 34.649 36.553 38.479 40.430 42.407 44.413 46.449 48.519 50.626 52.773 54.966 57.210 59.512 61.884 64.336 66.889 69.570 72.424 75.535 79.091 83.797 92.722 75.807 76.423 77.150 77.881 78.618 79.358 80.102 80.850 81.602 82.357 83.114 83.874 84.636 85.400 86.165 86.931 87.697 88.464 89.230 89.995 90.759 91.521 92.280 93.037 93.334 93.790 94.539 95.284 96.024 96.759 97.487 98.209 98.923 99.629 100.327 101.016 101.695 102.363 103.020 103.664 104.295 104.912 105.514 106.099 106.667 107.215 107.743 108.248 108.730 109.184 109.611 110.005 110.365 110.686 110.965 111.196 111.372 111.486 111.530 111.489 111.350 111.090 110.680 110.074 109.201 107.928 105.965 102.284 92.722 Entropy, Btu/lb·°F Liquid –0.11084 –0.10662 –0.10174 –0.09694 –0.09220 –0.08753 –0.08292 –0.07837 –0.07387 –0.06943 –0.06504 –0.06069 –0.05639 –0.05213 –0.04791 –0.04374 –0.03960 –0.03550 –0.03143 –0.02740 –0.02340 –0.01943 –0.01549 –0.01157 –0.01004 –0.00769 –0.00383 0.00000 0.00381 0.00759 0.01136 0.01510 0.01883 0.02253 0.02622 0.02989 0.03355 0.03719 0.04082 0.04444 0.04804 0.05164 0.05523 0.05882 0.06240 0.06597 0.06955 0.07312 0.07670 0.08029 0.08388 0.08748 0.09109 0.09473 0.09838 0.10206 0.10578 0.10953 0.11334 0.11720 0.12114 0.12517 0.12933 0.13366 0.13822 0.14315 0.14875 0.15614 0.17033 Vapor 0.28480 0.28120 0.27719 0.27341 0.26985 0.26649 0.26331 0.26032 0.25749 0.25483 0.25232 0.24995 0.24771 0.24561 0.24362 0.24175 0.23998 0.23832 0.23675 0.23527 0.23388 0.23257 0.23133 0.23016 0.22972 0.22906 0.22802 0.22705 0.22612 0.22525 0.22442 0.22364 0.22290 0.22220 0.22153 0.22090 0.22029 0.21971 0.21916 0.21862 0.21811 0.21761 0.21712 0.21664 0.21617 0.21569 0.21522 0.21475 0.21427 0.21378 0.21327 0.21274 0.21218 0.21159 0.21096 0.21029 0.20955 0.20875 0.20786 0.20687 0.20575 0.20446 0.20297 0.20120 0.19904 0.19629 0.19247 0.18597 0.17033 point Specific Heat cp , Btu/lb·°F Liquid Vapor 0.2895 0.2897 0.2901 0.2906 0.2913 0.2920 0.2929 0.2938 0.2948 0.2958 0.2969 0.2981 0.2994 0.3006 0.3020 0.3034 0.3048 0.3062 0.3077 0.3093 0.3109 0.3125 0.3142 0.3159 0.3166 0.3177 0.3195 0.3214 0.3234 0.3254 0.3274 0.3295 0.3317 0.3340 0.3364 0.3388 0.3414 0.3440 0.3468 0.3497 0.3528 0.3560 0.3594 0.3630 0.3668 0.3709 0.3752 0.3799 0.3849 0.3904 0.3963 0.4028 0.4100 0.4180 0.4269 0.4371 0.4487 0.4622 0.4782 0.4974 0.5211 0.5514 0.5918 0.6487 0.7365 0.892 1.251 3.007 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 3472 3434 3391 3347 3304 3260 3217 3174 3130 3087 3044 3001 2957 2914 2870 2827 2784 2740 2697 2654 2610 2567 2524 2480 2463 2437 2393 2350 2307 2263 2220 2176 2133 2089 2046 2002 1958 1914 1870 1826 1782 1738 1693 1649 1604 1559 1514 1468 1422 1376 1329 1282 1235 1187 1138 1089 1039 988 937 884 829 773 715 655 591 523 450 367 0 451.4 454.1 457.4 460.5 463.6 466.7 469.6 472.5 475.4 478.1 480.8 483.4 485.9 488.3 490.7 492.9 495.0 497.0 498.9 500.7 502.4 503.9 505.3 506.6 507.1 507.7 508.7 509.6 510.2 510.8 511.1 511.3 511.3 511.2 510.9 510.3 509.6 508.7 507.6 506.3 504.7 502.9 501.0 498.7 496.3 493.5 490.6 487.3 483.8 480.0 475.8 471.4 466.7 461.6 456.1 450.3 444.0 437.4 430.3 422.7 414.7 406.1 396.8 386.9 376.2 364.5 351.3 334.6 0.0 b Normal 30.21 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0792 0.0783 0.0773 0.0762 0.0752 0.0743 0.0733 0.0723 0.0714 0.0705 0.0696 0.0687 0.0678 0.0669 0.0660 0.0652 0.0644 0.0635 0.0627 0.0619 0.0611 0.0604 0.0596 0.0588 0.0585 0.0581 0.0573 0.0566 0.0558 0.0551 0.0544 0.0537 0.0530 0.0523 0.0516 0.0509 0.0502 0.0495 0.0488 0.0482 0.0475 0.0468 0.0462 0.0455 0.0448 0.0442 0.0435 0.0429 0.0422 0.0416 0.0409 0.0403 0.0396 0.0390 0.0383 0.0376 0.0370 0.0363 0.0356 0.0349 0.0343 0.0336 0.0329 0.0322 0.0315 0.0309 0.0305 0.0319 0.00283 0.00291 0.00299 0.00308 0.00316 0.00325 0.00334 0.00343 0.00353 0.00362 0.00372 0.00381 0.00391 0.00402 0.00412 0.00422 0.00433 0.00444 0.00455 0.00466 0.00477 0.00488 0.00500 0.00512 0.00517 0.00524 0.00536 0.00549 0.00561 0.00574 0.00588 0.00602 0.00616 0.00630 0.00644 0.00659 0.00673 0.00689 0.00705 0.00721 0.00737 0.00755 0.00772 0.00791 0.00811 0.00831 0.00853 0.00875 0.00900 0.00925 0.00953 0.00983 0.01015 0.01050 0.01089 0.01131 0.01179 0.01233 0.01295 0.01365 0.01448 0.01546 0.01665 0.01814 0.02009 0.02286 0.02750 0.03771 13.72 13.75 13.78 13.80 13.80 13.80 13.78 13.75 13.71 13.66 13.60 13.53 13.44 13.35 13.24 13.13 13.01 12.87 12.73 12.58 12.42 12.25 12.07 11.88 11.81 11.69 11.48 11.27 11.05 10.82 10.59 10.35 10.10 9.84 9.58 9.31 9.04 8.76 8.47 8.19 7.89 7.59 7.29 6.98 6.68 6.36 6.05 5.73 5.41 5.09 4.77 4.45 4.13 3.81 3.50 3.18 2.87 2.56 2.26 1.96 1.68 1.40 1.13 0.87 0.63 0.41 0.21 0.06 0.00 –169.26 –165 –160 –155 –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –53.03 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 162.87 point 0.1506 1.1924 0.1522 1.1908 0.1541 1.1890 0.1560 1.1873 0.1580 1.1858 0.1599 1.1843 0.1619 1.1830 0.1639 1.1818 0.1660 1.1807 0.1680 1.1797 0.1701 1.1789 0.1722 1.1783 0.1743 1.1777 0.1765 1.1773 0.1787 1.1771 0.1809 1.1770 0.1832 1.1771 0.1855 1.1774 0.1879 1.1779 0.1904 1.1786 0.1928 1.1794 0.1954 1.1805 0.1980 1.1818 0.2007 1.1833 0.2018 1.1840 0.2035 1.1851 0.2064 1.1871 0.2093 1.1894 0.2123 1.1920 0.2155 1.1949 0.2187 1.1981 0.2220 1.2017 0.2255 1.2056 0.2290 1.2098 0.2327 1.2146 0.2365 1.2197 0.2405 1.2253 0.2446 1.2315 0.2489 1.2382 0.2534 1.2456 0.2580 1.2536 0.2629 1.2624 0.2681 1.2721 0.2735 1.2827 0.2793 1.2944 0.2854 1.3072 0.2919 1.3215 0.2989 1.3373 0.3065 1.3549 0.3146 1.3746 0.3235 1.3968 0.3333 1.4218 0.3441 1.4504 0.3562 1.4831 0.3698 1.5209 0.3853 1.5650 0.4033 1.6171 0.4244 1.6795 0.4496 1.7553 0.4804 1.8494 0.5190 1.9689 0.5690 2.1254 0.6366 2.3388 0.7334 2.6465 0.8842 3.1275 1.152 3.984 1.765 5.933 4.581 14.798 2.206 2.069 1.926 1.799 1.687 1.586 1.496 1.413 1.339 1.271 1.208 1.150 1.097 1.048 1.002 0.959 0.919 0.881 0.846 0.813 0.782 0.752 0.724 0.698 0.688 0.672 0.648 0.625 0.604 0.583 0.563 0.544 0.525 0.508 0.491 0.474 0.458 0.443 0.429 0.414 0.401 0.387 0.374 0.362 0.349 0.337 0.326 0.314 0.303 0.293 0.282 0.272 0.261 0.251 0.241 0.232 0.222 0.212 0.203 0.193 0.184 0.174 0.164 0.154 0.143 0.132 0.119 0.101 — 0.0143 0.0145 0.0148 0.0150 0.0152 0.0155 0.0157 0.0160 0.0162 0.0165 0.0167 0.0170 0.0172 0.0175 0.0177 0.0180 0.0182 0.0185 0.0187 0.0190 0.0192 0.0195 0.0197 0.0200 0.0201 0.0202 0.0204 0.0207 0.0209 0.0212 0.0214 0.0221 0.0224 0.0226 0.0229 0.0231 0.0234 0.0237 0.0239 0.0242 0.0245 0.0248 0.0251 0.0254 0.0257 0.0260 0.0264 0.0267 0.0271 0.0275 0.0279 0.0283 0.0287 0.0292 0.0297 0.0302 0.0308 0.0314 0.0320 0.0328 0.0336 0.0346 0.0357 0.0370 0.0386 0.0407 0.0438 0.0496 — *Temperatures on ITS-90 scale a Triple boiling point c Critical Pressure 30.22 2009 ASHRAE Handbook—Fundamentals Fig. 10 Pressure-Enthalpy Diagram for Refrigerant 152a Thermophysical Properties of Refrigerants Refrigerant 152a (1,1-Difluoroethane) Properties of Saturated Liquid and Saturated Vapor Enthalpy, Pres- Density, Volume, Btu/lb Temp.,* sure, lb/ft3 ft3/lb °F psia Liquid Vapor Liquid Vapor –181.46a 0.009 180 0.010 –170 0.021 –160 0.041 –150 0.075 –140 0.131 –130 0.222 –120 0.361 –110 0.569 –100 0.871 –90 1.297 –80 1.886 –70 2.680 –60 3.731 –50 5.099 –45 5.921 –40 6.847 –35 7.887 –30 9.051 –25 10.348 –20 11.789 –15 13.386 –11.24b 14.696 –10 15.149 –5 17.092 0 19.226 5 21.564 10 24.119 15 26.904 20 29.934 25 33.223 30 36.784 35 40.634 40 44.787 45 49.259 50 54.065 55 59.222 60 64.746 65 70.654 70 76.963 75 83.691 80 90.854 85 98.470 90 106.56 95 115.14 100 124.23 105 133.84 110 144.01 115 154.74 120 166.07 125 178.00 130 190.56 135 203.77 140 217.66 145 232.25 150 247.55 155 263.60 160 280.42 165 298.04 170 316.48 175 335.77 180 355.95 185 377.04 190 399.08 195 422.10 200 446.15 210 497.53 220 553.69 230 615.42 235.87c 655.10 74.47 74.38 73.74 73.10 72.46 71.82 71.17 70.52 69.87 69.22 68.56 67.89 67.22 66.54 65.86 65.51 65.16 64.82 64.46 64.11 63.75 63.40 63.12 63.04 62.67 62.30 61.93 61.56 61.18 60.80 60.42 60.03 59.64 59.24 58.84 58.44 58.03 57.61 57.19 56.76 56.33 55.89 55.44 54.98 54.52 54.05 53.57 53.08 52.58 52.07 51.55 51.01 50.47 49.90 49.32 48.73 48.11 47.48 46.82 46.13 45.42 44.67 43.88 43.06 42.17 41.23 39.10 36.41 32.30 22.97 4858.2 4379.8 2227.6 1195.0 672.43 394.96 241.12 152.41 99.413 66.714 45.938 32.380 23.313 17.113 12.784 11.117 9.7045 8.5025 7.4754 6.5943 5.8357 5.1800 4.7450 4.6114 4.1167 3.6848 3.3066 2.9745 2.6819 2.4234 2.1945 1.9912 1.8103 1.6488 1.5043 1.3748 1.2585 1.1537 1.0591 0.9737 0.8963 0.826 0.7621 0.7039 0.6508 0.6023 0.5578 0.5171 0.4797 0.4453 0.4135 0.3843 0.3572 0.3322 0.3090 0.2874 0.2674 0.2487 0.2313 0.2150 0.1997 0.1854 0.1719 0.1592 0.1471 0.1356 0.1141 0.0935 0.0714 0.0435 –51.885 –51.368 –47.803 –44.203 –40.584 –36.953 –33.315 –29.669 –26.015 –22.351 –18.674 –14.981 –11.270 –7.538 –3.782 –1.894 0.000 1.902 3.811 5.728 7.653 9.586 11.046 11.528 13.479 15.439 17.408 19.388 21.378 23.378 25.389 27.411 29.444 31.490 33.547 35.618 37.701 39.798 41.909 44.034 46.175 48.331 50.503 52.692 54.899 57.124 59.369 61.633 63.919 66.227 68.558 70.915 73.297 75.708 78.149 80.621 83.128 85.673 88.258 90.887 93.566 96.300 99.095 101.961 104.910 107.955 114.433 121.740 131.138 147.629 122.577 122.821 124.502 126.208 127.938 129.689 131.460 133.249 135.052 136.868 138.692 140.522 142.353 144.184 146.010 146.920 147.828 148.732 149.634 150.531 151.424 152.312 152.977 153.196 154.073 154.945 155.810 156.667 157.518 158.360 159.194 160.019 160.834 161.639 162.433 163.216 163.987 164.745 165.490 166.221 166.936 167.636 168.319 168.985 169.631 170.258 170.864 171.447 172.006 172.539 173.044 173.520 173.964 174.374 174.746 175.078 175.365 175.603 175.787 175.911 175.968 175.948 175.841 175.633 175.306 174.835 173.320 170.564 164.733 147.629 Entropy, Btu/lb·°F Liquid –0.15045 –0.14859 –0.13607 –0.12385 –0.11197 –0.10044 –0.08923 –0.07834 –0.06774 –0.05741 –0.04732 –0.03747 –0.02783 –0.01838 –0.00911 –0.00454 0.00000 0.00450 0.00896 0.01339 0.01778 0.02214 0.02540 0.02647 0.03077 0.03505 0.03929 0.04352 0.04771 0.05188 0.05603 0.06016 0.06427 0.06836 0.07243 0.07648 0.08051 0.08454 0.08854 0.09253 0.09651 0.10048 0.10444 0.10840 0.11234 0.11628 0.12021 0.12414 0.12807 0.13200 0.13593 0.13987 0.14381 0.14776 0.15172 0.15570 0.15970 0.16371 0.16776 0.17183 0.17595 0.18011 0.18432 0.18861 0.19297 0.19744 0.20683 0.21725 0.23049 0.25390 Vapor 0.47664 0.47424 0.45876 0.44481 0.43222 0.42086 0.41059 0.40130 0.39289 0.38527 0.37837 0.37210 0.36641 0.36124 0.35653 0.35434 0.35225 0.35025 0.34834 0.34652 0.34478 0.34311 0.34191 0.34152 0.34000 0.33854 0.33714 0.33580 0.33452 0.33329 0.33211 0.33097 0.32988 0.32883 0.32781 0.32683 0.32589 0.32497 0.32408 0.32322 0.32238 0.32156 0.32075 0.31996 0.31919 0.31842 0.31766 0.31691 0.31616 0.31540 0.31464 0.31387 0.31309 0.31229 0.31148 0.31063 0.30975 0.30884 0.30788 0.30686 0.30578 0.30462 0.30337 0.30200 0.30050 0.29883 0.29477 0.28909 0.27920 0.25390 point Specific Heat cp , Btu/lb·°F Liquid Vapor 0.3531 0.3540 0.3586 0.3611 0.3626 0.3635 0.3642 0.3649 0.3658 0.3670 0.3684 0.3700 0.3720 0.3742 0.3766 0.3779 0.3793 0.3807 0.3822 0.3838 0.3854 0.3870 0.3883 0.3887 0.3905 0.3924 0.3943 0.3962 0.3982 0.4003 0.4025 0.4047 0.4070 0.4094 0.4119 0.4145 0.4171 0.4199 0.4228 0.4258 0.4289 0.4322 0.4357 0.4393 0.4431 0.4471 0.4513 0.4558 0.4606 0.4657 0.4711 0.4770 0.4833 0.4902 0.4977 0.5059 0.5149 0.5249 0.5361 0.5488 0.5634 0.5801 0.5999 0.6235 0.6524 0.6889 0.8017 1.0540 2.2140 0.1670 0.1674 0.1703 0.1732 0.1762 0.1793 0.1825 0.1857 0.1892 0.1927 0.1965 0.2004 0.2045 0.2088 0.2134 0.2157 0.2181 0.2206 0.2232 0.2258 0.2285 0.2313 0.2334 0.2341 0.2370 0.2400 0.2431 0.2463 0.2495 0.2529 0.2564 0.2599 0.2636 0.2673 0.2712 0.2753 0.2794 0.2837 0.2882 0.2928 0.2976 0.3026 0.3079 0.3133 0.3191 0.3251 0.3314 0.3381 0.3451 0.3527 0.3607 0.3693 0.3785 0.3886 0.3995 0.4114 0.4245 0.4392 0.4556 0.4742 0.4954 0.5202 0.5493 0.5844 0.6276 0.6821 0.8519 1.2307 2.9194 Vel. of Sound, ft/s cp /cv Vapor Liquid Vapor 1.2201 1.2194 1.2152 1.2112 1.2074 1.2039 1.2006 1.1977 1.1952 1.1931 1.1913 1.1900 1.1893 1.1890 1.1892 1.1896 1.1901 1.1908 1.1916 1.1926 1.1937 1.1951 1.1962 1.1966 1.1983 1.2002 1.2024 1.2047 1.2073 1.2101 1.2132 1.2166 1.2202 1.2242 1.2285 1.2331 1.2381 1.2436 1.2494 1.2557 1.2626 1.2700 1.2780 1.2867 1.2961 1.3063 1.3175 1.3296 1.3429 1.3574 1.3734 1.3911 1.4106 1.4323 1.4566 1.4838 1.5145 1.5495 1.5896 1.6359 1.6900 1.7540 1.8307 1.9244 2.0411 2.1906 2.6633 3.7334 8.5318 4596 505.4 4575 506.6 4438 514.6 4316 522.4 4204 530.0 4099 537.5 3999 544.7 3902 551.7 3808 558.5 3715 565.0 3623 571.2 3532 577.2 3442 582.8 3352 588.0 3263 592.9 3218 595.2 3174 597.4 3129 599.4 3085 601.4 3040 603.2 2996 604.9 2952 606.5 2918 607.6 2907 608.0 2863 609.3 2818 610.5 2774 611.6 2729 612.5 2685 613.3 2640 613.9 2596 614.3 2551 614.6 2506 614.8 2461 614.8 2416 614.6 2371 614.2 2326 613.7 2281 612.9 2235 612.0 2190 610.9 2144 609.7 2098 608.2 2052 606.5 2006 604.6 1960 602.5 1913 600.1 1866 597.6 1819 594.8 1772 591.7 1725 588.5 1677 584.9 1629 581.1 1581 577.1 1532 572.7 1483 568.1 1434 563.1 1384 557.9 1334 552.3 1283 546.4 1232 540.1 1180 533.4 1127 526.4 1074 518.9 1020 510.9 965 502.5 908 493.5 791 473.8 663 451.1 518 423.7 0 0.0 b Normal 30.23 Viscosity, lbm /ft·h Liquid Vapor 4.899 4.761 3.961 3.349 2.871 2.493 2.187 1.936 1.728 1.552 1.403 1.274 1.162 1.064 0.978 0.938 0.901 0.866 0.833 0.801 0.771 0.742 0.722 0.715 0.689 0.665 0.641 0.619 0.598 0.577 0.557 0.539 0.521 0.503 0.487 0.471 0.456 0.441 0.427 0.413 0.400 0.387 0.375 0.363 0.351 0.340 0.330 0.319 0.309 0.299 0.290 0.280 0.271 0.262 0.254 0.245 0.237 0.229 0.221 0.213 0.205 0.197 0.189 0.182 0.174 0.166 0.150 0.133 0.110 — 0.0126 0.0127 0.0131 0.0135 0.0140 0.0144 0.0148 0.0153 0.0157 0.0162 0.0166 0.0171 0.0175 0.0180 0.0184 0.0187 0.0189 0.0191 0.0193 0.0196 0.0198 0.0200 0.0202 0.0202 0.0205 0.0207 0.0209 0.0211 0.0214 0.0216 0.0218 0.0221 0.0223 0.0225 0.0228 0.0230 0.0232 0.0235 0.0237 0.0240 0.0242 0.0245 0.0248 0.0250 0.0253 0.0256 0.0259 0.0261 0.0271 0.0275 0.0278 0.0282 0.0286 0.0290 0.0295 0.0299 0.0304 0.0309 0.0314 0.0320 0.0326 0.0332 0.0340 0.0347 0.0356 0.0366 0.0390 0.0424 0.0488 — Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.1019 0.1016 0.0993 0.0971 0.0949 0.0928 0.0907 0.0887 0.0867 0.0848 0.0829 0.0811 0.0793 0.0776 0.0758 0.0750 0.0742 0.0733 0.0725 0.0717 0.0709 0.0701 0.0695 0.0693 0.0685 0.0677 0.0670 0.0662 0.0655 0.0647 0.0640 0.0633 0.0625 0.0618 0.0611 0.0604 0.0597 0.0590 0.0583 0.0576 0.0569 0.0562 0.0556 0.0549 0.0542 0.0535 0.0529 0.0522 0.0515 0.0509 0.0502 0.0495 0.0489 0.0482 0.0476 0.0469 0.0462 0.0456 0.0449 0.0443 0.0436 0.0429 0.0422 0.0416 0.0409 0.0402 0.0390 0.0380 0.0390 0.00006 0.00010 0.00042 0.00073 0.00104 0.00136 0.00167 0.00198 0.00230 0.00261 0.00292 0.00324 0.00355 0.00387 0.00419 0.00435 0.00451 0.00467 0.00483 0.00499 0.00515 0.00532 0.00544 0.00548 0.00565 0.00581 0.00598 0.00614 0.00631 0.00648 0.00665 0.00683 0.00700 0.00718 0.00735 0.00753 0.00771 0.00790 0.00809 0.00828 0.00847 0.00867 0.00887 0.00908 0.00929 0.00950 0.00973 0.00996 0.01019 0.01043 0.01069 0.01095 0.01123 0.01152 0.01183 0.01215 0.01250 0.01287 0.01327 0.01370 0.01418 0.01470 0.01527 0.01592 0.01666 0.01751 0.01970 0.02315 0.03092 31.65 31.52 30.60 29.68 28.76 27.86 26.96 26.06 25.17 24.28 23.40 22.53 21.66 20.80 19.94 19.52 19.09 18.67 18.25 17.83 17.42 17.00 16.69 16.59 16.18 15.77 15.36 14.96 14.55 14.15 13.75 13.36 12.96 12.57 12.18 11.79 11.40 11.02 10.64 10.26 9.88 9.51 9.14 8.77 8.40 8.04 7.68 7.33 6.97 6.62 6.27 5.93 5.59 5.25 4.92 4.59 4.27 3.95 3.63 3.32 3.02 2.72 2.42 2.14 1.85 1.58 1.06 0.58 0.17 0.00 –181.46 –180 –170 –160 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 –50 –45 –40 –35 –30 –25 –20 –15 –11.24 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 210 220 230 235.87 point *Temperatures on ITS-90 scale a Triple boiling point c Critical Pressure 30.24 2009 ASHRAE Handbook—Fundamentals Fig. 11 Pressure-Enthalpy Diagram for Refrigerant 245fa Thermophysical Properties of Refrigerants Refrigerant 245fa (1,1,1,3,3-Pentafluoropropane) Properties of Saturated Liquid and Saturated Vapor Enthalpy, Pres- Density, Volume, Btu/lb Temp.,a sure, lb/ft3 ft3/lb °F psia Liquid Vapor Liquid Vapor –50 0.564 –45 0.686 –40 0.830 –35 0.998 –30 1.194 –25 1.421 –20 1.684 –15 1.985 –10 2.331 –5 2.724 0 3.171 5 3.677 10 4.247 15 4.887 20 5.604 25 6.403 30 7.293 35 8.280 40 9.371 45 10.575 50 11.900 55 13.353 59.25b 14.696 60 14.943 65 16.680 70 18.573 75 20.630 80 22.863 85 25.279 90 27.890 95 30.707 100 33.739 105 36.997 110 40.492 115 44.237 120 48.241 125 52.517 130 57.076 135 61.930 140 67.092 145 72.574 150 78.389 155 84.548 160 91.065 165 97.953 170 105.23 175 112.90 180 120.98 185 129.49 190 138.44 195 147.84 200 157.71 205 168.07 210 178.92 215 190.30 220 202.20 225 214.66 230 227.68 235 241.29 240 255.50 245 270.34 250 285.83 260 318.83 270 354.71 280 393.73 290 436.18 300 482.55 309.22c 529.53 aTemperatures 30.25 Entropy, Btu/lb·°F Liquid Vapor Specific Heat cp , Btu/lb·°F Liquid Vapor cp /cv Vapor 1.0984 1.0982 1.0980 1.0979 1.0979 1.0979 1.0980 1.0981 1.0983 1.0986 1.0990 1.0994 1.0999 1.1005 1.1011 1.1018 1.1026 1.1035 1.1045 1.1055 1.1067 1.1079 1.1091 1.1093 1.1107 1.1123 1.1140 1.1158 1.1177 1.1198 1.1220 1.1243 1.1269 1.1296 1.1325 1.1355 1.1389 1.1424 1.1462 1.1503 1.1547 1.1594 1.1645 1.1700 1.1760 1.1824 1.1895 1.1971 1.2055 1.2146 1.2246 1.2357 1.2480 1.2616 1.2768 1.2938 1.3131 1.3349 1.3599 1.3888 1.4224 1.4619 1.5660 1.7249 1.9938 2.5410 4.2481 bNormal Vel. of Sound, ft/s Liquid Vapor 3192 3150 3109 3067 3026 2985 2945 2904 2864 2825 2785 2746 2707 2668 2629 2590 2552 2514 2475 2437 2400 2362 2330 2324 2287 2249 2212 2175 2138 2100 2063 2026 1989 1952 1915 1878 1842 1805 1768 1731 1693 1656 1619 1582 1545 1507 1470 1432 1394 1356 1318 1280 1241 1203 1164 1124 1085 1045 1005 964 923 881 795 705 610 507 389 0 405.9 408.0 410.0 412.0 414.0 415.9 417.7 419.5 421.2 422.9 424.5 426.1 427.5 429.0 430.3 431.6 432.8 434.0 435.0 436.0 436.9 437.7 438.4 438.5 439.1 439.7 440.1 440.5 440.7 440.8 440.9 440.8 440.6 440.3 439.9 439.3 438.7 437.8 436.9 435.8 434.6 433.2 431.6 429.9 428.1 426.0 423.8 421.4 418.8 416.0 413.0 409.8 406.3 402.6 398.7 394.5 390.0 385.3 380.2 374.8 369.1 363.0 349.7 334.6 317.5 297.9 274.8 0.0 Viscosity, lbm /ft·h Liquid Vapor 3.238 3.028 2.840 2.671 2.518 2.379 2.252 2.135 2.029 1.930 1.839 1.754 1.676 1.602 1.534 1.470 1.410 1.353 1.300 1.250 1.202 1.157 1.121 1.115 1.074 1.036 0.999 0.964 0.931 0.899 0.869 0.840 0.812 0.785 0.759 0.735 0.711 0.688 0.666 0.644 0.623 0.603 0.584 0.565 0.547 0.529 0.512 0.495 0.479 0.463 0.448 0.432 0.418 0.403 0.389 0.375 0.362 0.348 0.335 0.322 0.309 0.297 0.271 0.246 0.221 0.194 0.163 — 0.0190 0.0193 0.0195 0.0197 0.0200 0.0202 0.0204 0.0206 0.0209 0.0211 0.0213 0.0216 0.0218 0.0220 0.0223 0.0225 0.0227 0.0229 0.0232 0.0234 0.0236 0.0238 0.0240 0.0241 0.0243 0.0245 0.0247 0.0249 0.0252 0.0254 0.0256 0.0258 0.0261 0.0263 0.0265 0.0268 0.0270 0.0272 0.0275 0.0277 0.0280 0.0282 0.0285 0.0288 0.0290 0.0293 0.0296 0.0299 0.0303 0.0306 0.0309 0.0313 0.0317 0.0321 0.0326 0.0330 0.0335 0.0341 0.0347 0.0353 0.0360 0.0368 0.0386 0.0409 0.0440 0.0484 0.0561 — cCritical Thermal Cond., Surface Btu/h·ft·°F Tension, Temp., Liquid Vapor dyne/cm °F 0.0638 0.0633 0.0627 0.0622 0.0617 0.0612 0.0606 0.0601 0.0596 0.0591 0.0586 0.0581 0.0576 0.0571 0.0566 0.0561 0.0556 0.0551 0.0546 0.0541 0.0536 0.0532 0.0527 0.0526 0.0521 0.0516 0.0511 0.0506 0.0501 0.0496 0.0491 0.0486 0.0481 0.0476 0.0471 0.0465 0.0460 0.0455 0.0450 0.0445 0.0440 0.0434 0.0429 0.0424 0.0419 0.0414 0.0409 0.0404 0.0399 0.0394 0.0389 0.0384 0.0379 0.0374 0.0369 0.0364 0.0359 0.0354 0.0350 0.0345 0.0341 0.0336 0.0328 0.0320 0.0313 0.0307 0.0310 point 0.00543 0.00547 0.00552 0.00557 0.00562 0.00568 0.00574 0.00580 0.00587 0.00594 0.00601 0.00609 0.00617 0.00625 0.00633 0.00642 0.00650 0.00660 0.00669 0.00679 0.00689 0.00699 0.00708 0.00709 0.00720 0.00731 0.00742 0.00753 0.00765 0.00777 0.00789 0.00801 0.00813 0.00826 0.00839 0.00852 0.00865 0.00879 0.00893 0.00907 0.00921 0.00936 0.00951 0.00966 0.00981 0.00997 0.01013 0.01030 0.01047 0.01065 0.01083 0.01101 0.01121 0.01141 0.01163 0.01186 0.01210 0.01235 0.01262 0.01292 0.01324 0.01360 0.01443 0.01549 0.01693 0.01905 0.02295 22.94 22.60 22.26 21.92 21.58 21.23 20.89 20.54 20.20 19.85 19.50 19.15 18.80 18.45 18.10 17.74 17.39 17.03 16.68 16.32 15.97 15.61 15.31 15.26 14.90 14.54 14.19 13.83 13.47 13.12 12.76 12.41 12.05 11.70 11.34 10.99 10.64 10.29 9.94 9.59 9.24 8.90 8.55 8.21 7.87 7.53 7.19 6.86 6.53 6.20 5.87 5.55 5.23 4.91 4.60 4.29 3.98 3.68 3.38 3.09 2.81 2.53 1.99 1.48 1.01 0.59 0.23 0.00 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 59.25 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 260 270 280 290 300 309.22 94.56 94.15 93.74 93.33 92.92 92.50 92.09 91.67 91.25 90.83 90.41 89.98 89.55 89.12 88.69 88.26 87.82 87.38 86.94 86.50 86.05 85.60 85.21 85.14 84.68 84.22 83.75 83.28 82.80 82.32 81.84 81.35 80.85 80.35 79.84 79.33 78.81 78.28 77.75 77.21 76.66 76.10 75.54 74.96 74.37 73.78 73.17 72.55 71.92 71.28 70.62 69.94 69.25 68.54 67.81 67.06 66.29 65.50 64.67 63.82 62.93 62.00 60.01 57.78 55.20 52.06 47.69 32.22 57.781 48.047 40.172 33.764 28.520 24.207 20.641 17.678 15.204 13.130 11.384 9.9062 8.6516 7.5820 6.6667 5.8806 5.2031 4.6172 4.1088 3.6663 3.2800 2.9418 2.6869 2.6448 2.3833 2.1524 1.9480 1.7666 1.6053 1.4614 1.3328 1.2177 1.1143 1.0214 0.9376 0.8619 0.7935 0.7314 0.6750 0.6238 0.5771 0.5344 0.4954 0.4597 0.4270 0.3969 0.3692 0.3437 0.3202 0.2984 0.2783 0.2596 0.2423 0.2262 0.2112 0.1973 0.1842 0.1720 0.1606 0.1499 0.1398 0.1303 0.1128 0.0970 0.0825 0.0688 0.0549 0.0310 –2.904 –1.453 0.000 1.457 2.918 4.382 5.851 7.324 8.801 10.283 11.770 13.261 14.758 16.259 17.766 19.279 20.797 22.320 23.850 25.386 26.928 28.476 29.797 30.031 31.592 33.161 34.736 36.319 37.909 39.507 41.112 42.725 44.347 45.977 47.615 49.263 50.919 52.585 54.260 55.945 57.641 59.346 61.063 62.791 64.531 66.282 68.046 69.823 71.614 73.418 75.237 77.072 78.922 80.790 82.676 84.580 86.505 88.452 90.422 92.417 94.440 96.494 100.705 105.091 109.717 114.725 120.518 133.408 95.305 –0.00700 0.23272 0.2897 0.1760 96.141 –0.00348 0.23187 0.2903 0.1777 96.981 0.00000 0.23109 0.2910 0.1794 97.824 0.00345 0.23037 0.2917 0.1812 98.670 0.00687 0.22972 0.2925 0.1830 99.520 0.01026 0.22913 0.2933 0.1848 100.372 0.01362 0.22860 0.2941 0.1867 101.228 0.01695 0.22812 0.2949 0.1885 102.085 0.02025 0.22770 0.2958 0.1904 102.946 0.02352 0.22732 0.2967 0.1924 103.808 0.02677 0.22700 0.2977 0.1943 104.672 0.03000 0.22672 0.2987 0.1963 105.539 0.03320 0.22649 0.2997 0.1983 106.407 0.03638 0.22629 0.3007 0.2004 107.277 0.03953 0.22614 0.3018 0.2024 108.148 0.04266 0.22602 0.3028 0.2045 109.020 0.04578 0.22595 0.3040 0.2066 109.893 0.04887 0.22590 0.3051 0.2088 110.768 0.05194 0.22589 0.3063 0.2110 111.643 0.05499 0.22591 0.3075 0.2132 112.518 0.05803 0.22596 0.3087 0.2154 113.394 0.06104 0.22604 0.3100 0.2177 114.138 0.06360 0.22613 0.3111 0.2196 114.270 0.06404 0.22615 0.3113 0.2200 115.146 0.06703 0.22628 0.3127 0.2223 116.021 0.06999 0.22643 0.3140 0.2247 116.896 0.07295 0.22661 0.3154 0.2271 117.771 0.07588 0.22681 0.3169 0.2295 118.644 0.07881 0.22703 0.3183 0.2320 119.517 0.08172 0.22728 0.3199 0.2345 120.388 0.08461 0.22754 0.3214 0.2370 121.257 0.08750 0.22781 0.3230 0.2396 122.124 0.09037 0.22811 0.3247 0.2423 122.989 0.09323 0.22841 0.3264 0.2449 123.852 0.09607 0.22874 0.3281 0.2477 124.711 0.09891 0.22907 0.3299 0.2505 125.568 0.10174 0.22942 0.3318 0.2533 126.420 0.10456 0.22977 0.3337 0.2563 127.269 0.10737 0.23014 0.3357 0.2593 128.113 0.11017 0.23052 0.3377 0.2623 128.952 0.11296 0.23090 0.3398 0.2655 129.786 0.11575 0.23129 0.3420 0.2688 130.614 0.11853 0.23168 0.3443 0.2722 131.435 0.12130 0.23208 0.3467 0.2757 132.249 0.12407 0.23248 0.3492 0.2793 133.055 0.12684 0.23288 0.3518 0.2831 133.853 0.12960 0.23328 0.3545 0.2870 134.641 0.13235 0.23368 0.3574 0.2911 135.419 0.13511 0.23408 0.3604 0.2955 136.185 0.13786 0.23447 0.3635 0.3001 136.940 0.14061 0.23486 0.3669 0.3049 137.680 0.14336 0.23524 0.3705 0.3101 138.406 0.14612 0.23561 0.3743 0.3156 139.116 0.14887 0.23597 0.3784 0.3216 139.807 0.15163 0.23631 0.3827 0.3280 140.479 0.15439 0.23664 0.3875 0.3350 141.129 0.15717 0.23695 0.3927 0.3427 141.754 0.15995 0.23723 0.3983 0.3512 142.351 0.16274 0.23749 0.4046 0.3607 142.918 0.16554 0.23772 0.4116 0.3713 143.450 0.16836 0.23791 0.4194 0.3834 143.943 0.17120 0.23806 0.4283 0.3974 144.785 0.17695 0.23820 0.4506 0.4331 145.378 0.18285 0.23806 0.4827 0.4857 145.610 0.18897 0.23749 0.5343 0.5724 145.257 0.19550 0.23622 0.6359 0.7454 143.705 0.20294 0.23347 0.955 1.2783 133.408 0.21951 0.21951 on ITS-90 scale boiling point Pressure 30.26 2009 ASHRAE Handbook—Fundamentals Fig. 12 Pressure-Enthalpy Diagram for Refrigerant 404A Thermophysical Properties of Refrigerants Refrigerant 404A [R-125/143a/134a (44/52/4)] Properties of Liquid on Bubble Line and Vapor on Dew Line Enthalpy, PresDensity, Volume, Btu/lb Temp.,* °F sure, lb/ft3 ft3/lb psia Bubble Dew Liquid Vapor Liquid Vapor 1 –129.56 1.5 –120.05 2 –112.90 2.5 –107.10 3 –102.18 4 –94.08 5 –87.49 6 –81.89 7 –77.00 8 –72.64 10 –65.08 12 –58.65 14 –53.01 14.7b –51.20 16 –47.98 18 –43.42 20 –39.24 22 –35.37 24 –31.77 26 –28.39 28 –25.21 30 –22.20 32 –19.34 34 –16.62 36 –14.01 38 –11.52 40 –9.12 42 –6.81 44 –4.59 46 –2.44 48 –0.36 50 1.65 55 6.43 60 10.89 65 15.07 70 19.02 75 22.76 80 26.32 85 29.71 90 32.96 95 36.07 100 39.07 110 44.73 120 50.02 130 54.99 140 59.68 150 64.13 160 68.36 170 72.40 180 76.26 190 79.97 200 83.53 220 90.27 240 96.57 260 102.48 280 108.06 300 113.34 320 118.36 340 123.14 360 127.71 380 132.09 400 136.28 450 146.07 500 154.97 548.24c 162.50 –127.50 –118.11 –111.03 –105.29 –100.42 –92.40 –85.87 –80.32 –75.46 –71.14 –63.64 –57.25 –51.65 –49.85 –46.65 –42.11 –37.96 –34.11 –30.53 –27.17 –24.01 –21.02 –18.17 –15.46 –12.87 –10.39 –8.01 –5.71 –3.50 –1.36 0.71 2.71 7.47 11.90 16.07 20.00 23.72 27.27 30.64 33.88 36.98 39.96 45.60 50.86 55.81 60.48 64.91 69.13 73.15 76.99 80.68 84.23 90.94 97.21 103.09 108.64 113.90 118.89 123.65 128.19 132.54 136.71 146.42 155.22 162.50 89.61 88.64 87.92 87.33 86.83 86.01 85.33 84.76 84.25 83.80 83.01 82.34 81.74 81.55 81.20 80.71 80.26 79.83 79.44 79.06 78.71 78.37 78.05 77.74 77.44 77.15 76.87 76.60 76.34 76.09 75.84 75.60 75.03 74.48 73.97 73.47 72.99 72.54 72.09 71.67 71.25 70.84 70.06 69.32 68.60 67.90 67.23 66.57 65.93 65.30 64.68 64.07 62.87 61.70 60.53 59.37 58.20 57.03 55.83 54.61 53.35 52.03 48.36 43.51 35.84 36.2311 24.7754 18.9245 15.3578 12.9493 9.8941 8.0300 6.7705 5.8607 5.1716 4.1954 3.5353 3.0582 2.9217 2.6968 2.4132 2.1845 1.9960 1.8379 1.7033 1.5873 1.4863 1.3974 1.3187 1.2484 1.1852 1.1281 1.0763 1.0290 0.9857 0.9459 0.9091 0.8285 0.7609 0.7033 0.6537 0.6104 0.5724 0.5387 0.5085 0.4815 0.4570 0.4145 0.3789 0.3485 0.3222 0.2994 0.2793 0.2614 0.2454 0.2311 0.2181 0.1955 0.1764 0.1601 0.1460 0.1336 0.1226 0.1127 0.1038 0.0956 0.0881 0.0713 0.0556 0.0279 –26.33 –23.56 –21.49 –19.81 –18.38 –16.02 –14.10 –12.46 –11.02 –9.74 –7.51 –5.60 –3.91 –3.37 –2.41 –1.03 0.23 1.40 2.50 3.53 4.51 5.44 6.32 7.16 7.97 8.75 9.50 10.22 10.92 11.60 12.25 12.89 14.41 15.84 17.19 18.47 19.69 20.86 21.98 23.05 24.09 25.10 27.01 28.82 30.53 32.16 33.73 35.23 36.68 38.08 39.44 40.76 43.29 45.70 48.02 50.25 52.42 54.54 56.61 58.65 60.67 62.68 67.80 73.49 80.85 71.76 73.11 74.14 74.98 75.69 76.86 77.82 78.64 79.35 79.98 81.07 82 82.81 83.07 83.53 84.18 84.78 85.32 85.83 86.30 86.75 87.16 87.56 87.93 88.29 88.62 88.95 89.26 89.56 89.84 90.12 90.38 91.01 91.58 92.11 92.61 93.07 93.50 93.91 94.30 94.66 95.00 95.64 96.21 96.73 97.20 97.62 98.01 98.37 98.69 98.98 99.25 99.70 100.05 100.32 100.51 100.61 100.64 100.58 100.43 100.20 99.85 98.42 95.51 80.85 Entropy, Btu/lb·°F Liquid –0.07039 –0.06215 –0.05611 –0.05129 –0.04727 –0.04076 –0.03555 –0.03119 –0.02742 –0.02409 –0.01839 –0.0136 –0.00944 –0.00812 –0.00577 –0.00246 0.00055 0.00332 0.00588 0.00827 0.01051 0.01263 0.01463 0.01653 0.01834 0.02007 0.02172 0.02331 0.02484 0.02632 0.02774 0.02911 0.03237 0.03539 0.03822 0.04088 0.04339 0.04578 0.04804 0.05021 0.05229 0.05428 0.05804 0.06155 0.06485 0.06795 0.07090 0.07371 0.07639 0.07896 0.08143 0.08381 0.08833 0.09259 0.09663 0.10047 0.10417 0.10773 0.11118 0.11456 0.11787 0.12114 0.12934 0.13833 0.14987 Specific Heat cp , Vel. of Sound, Btu/lb·°F ft/s cp /cv Vapor Liquid Vapor Vapor Liquid Vapor 0.2907 0.2901 0.2900 0.2902 0.2905 0.2912 0.2920 0.2929 0.2937 0.2944 0.2959 0.2974 0.2987 0.2991 0.3000 0.3012 0.3024 0.3035 0.3046 0.3056 0.3067 0.3077 0.3086 0.3096 0.3105 0.3115 0.3124 0.3133 0.3141 0.3150 0.3158 0.3167 0.3188 0.3208 0.3228 0.3247 0.3267 0.3286 0.3305 0.3324 0.3342 0.3361 0.3399 0.3437 0.3475 0.3514 0.3553 0.3594 0.3635 0.3678 0.3722 0.3767 0.3864 0.3969 0.4086 0.4216 0.4364 0.4534 0.4733 0.4972 0.5265 0.5635 0.7246 1.2912 — 0.1554 0.1589 0.1615 0.1637 0.1656 0.1688 0.1715 0.1738 0.1758 0.1777 0.1811 0.1840 0.1866 0.1875 0.1891 0.1913 0.1935 0.1955 0.1974 0.1992 0.2010 0.2027 0.2043 0.2059 0.2074 0.2089 0.2104 0.2119 0.2133 0.2146 0.2160 0.2173 0.2206 0.2237 0.2267 0.2297 0.2325 0.2354 0.2382 0.2409 0.2436 0.2464 0.2518 0.2572 0.2626 0.2682 0.2739 0.2797 0.2857 0.2919 0.2984 0.3051 0.3194 0.3353 0.3530 0.3730 0.3959 0.4226 0.4543 0.4927 0.5404 0.6014 0.8714 1.8068 — 1.161 1.160 1.159 1.159 1.159 1.159 1.159 1.159 1.160 1.161 1.162 1.164 1.166 1.166 1.167 1.169 1.171 1.173 1.175 1.176 1.178 1.180 1.182 1.184 1.186 1.188 1.190 1.192 1.194 1.196 1.198 1.200 1.205 1.210 1.215 1.220 1.226 1.231 1.236 1.242 1.248 1.254 1.266 1.279 1.292 1.306 1.321 1.336 1.353 1.370 1.388 1.408 1.450 1.498 1.553 1.616 1.690 1.778 1.883 2.013 2.174 2.383 3.313 6.526 — 3173 3050 2964 2898 2845 2760 2694 2639 2592 2551 2481 2422 2372 2355 2327 2286 2249 2215 2184 2154 2127 2101 2076 2052 2030 2008 1987 1967 1948 1930 1912 1894 1853 1814 1778 1744 1712 1681 1651 1623 1596 1569 1520 1473 1429 1387 1347 1309 1273 1238 1204 1171 1108 1048 991 936 884 832 783 734 685 638 519 396 — 439.8 444.6 448.1 450.7 452.9 456.3 458.9 461.0 462.7 464.1 466.4 468.1 469.4 469.8 470.4 471.2 471.9 472.4 472.8 473.1 473.3 473.5 473.6 473.6 473.6 473.5 473.4 473.3 473.1 472.9 472.7 472.5 471.8 471.0 470.1 469.2 468.1 467.0 465.9 464.7 463.5 462.2 459.6 456.8 454.0 451.1 448.2 445.2 442.1 439.0 435.8 432.6 426.1 419.4 412.6 405.7 398.7 391.5 384.2 376.8 369.2 361.5 341.6 320.1 — Viscosity, lbm /ft·h Liquid 1.695 1.518 1.403 1.320 1.255 1.159 1.088 1.033 0.989 0.952 0.892 0.845 0.806 0.795 0.774 0.747 0.723 0.701 0.682 0.665 0.649 0.634 0.621 0.608 0.597 0.586 0.576 0.566 0.557 0.548 0.540 0.532 0.514 0.498 0.483 0.470 0.457 0.446 0.435 0.425 0.416 0.407 0.391 0.376 0.363 0.351 0.339 0.329 0.319 0.310 0.301 0.293 0.277 0.263 0.250 0.238 0.227 0.216 0.206 0.196 0.187 0.177 0.154 0.128 — 30.27 Thermal Cond., Surface PresBtu/h·ft·°F Tension, sure, Vapor Liquid Vapor dyne/cm psia 0.0695 0.0678 0.0666 0.0657 0.0647 0.0634 0.0623 0.0614 0.0606 0.0599 0.0587 0.0577 0.0568 0.0566 0.0561 0.0554 0.0548 0.0542 0.0537 0.0532 0.0527 0.0523 0.0519 0.0515 0.0511 0.0507 0.0504 0.0501 0.0497 0.0494 0.0492 0.0489 0.0482 0.0476 0.0470 0.0465 0.0460 0.0455 0.0450 0.0446 0.0442 0.0438 0.0430 0.0423 0.0416 0.0410 0.0404 0.0399 0.0394 0.0388 0.0384 0.0379 0.0370 0.0362 0.0354 0.0347 0.0340 0.0333 0.0326 0.0320 0.0315 0.0309 0.0298 0.0299 — 0.00369 0.00388 0.00403 0.00414 0.00425 0.00442 0.00456 0.00468 0.00478 0.00488 0.00505 0.00519 0.00532 0.00536 0.00544 0.00554 0.00564 0.00573 0.00582 0.00590 0.00598 0.00605 0.00612 0.00619 0.00625 0.00632 0.00638 0.00644 0.00649 0.00655 0.00660 0.00665 0.00678 0.00690 0.00701 0.00712 0.00723 0.00733 0.00742 0.00753 0.00763 0.00772 0.00792 0.00810 0.00829 0.00848 0.00866 0.00885 0.00904 0.00922 0.00941 0.00961 0.01000 0.01041 0.01084 0.01131 0.01180 0.01235 0.01294 0.01360 0.01435 0.01520 0.01806 0.02348 — 17.42 16.92 16.53 16.22 15.94 15.49 15.11 14.79 14.50 14.25 13.79 13.41 13.06 12.95 12.75 12.47 12.20 11.96 11.73 11.52 11.31 11.12 10.94 10.76 10.59 10.43 10.27 10.12 9.97 9.83 9.70 9.56 9.25 8.95 8.67 8.41 8.16 7.92 7.70 7.48 7.27 7.07 6.69 6.34 6.01 5.69 5.4 5.12 4.85 4.60 4.36 4.13 3.70 3.30 2.93 2.59 2.28 1.98 1.71 1.46 1.22 1.01 0.54 0.18 0.00 1 1.5 2 2.5 3 4 5 6 7 8 10 12 14 14.7 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320 340 360 380 400 450 500 548.24 point 0.22616 0.22201 0.21920 0.21710 0.21544 0.21292 0.21106 0.20960 0.20841 0.20741 0.20581 0.20457 0.20357 0.20326 0.20273 0.20203 0.20141 0.20088 0.20041 0.19998 0.19960 0.19925 0.19894 0.19864 0.19838 0.19813 0.19790 0.19768 0.19748 0.19729 0.19711 0.19694 0.19655 0.19621 0.19590 0.19562 0.19537 0.19514 0.19492 0.19471 0.19452 0.19434 0.19400 0.19368 0.19338 0.19309 0.19281 0.19253 0.19226 0.19198 0.19170 0.19143 0.19085 0.19026 0.18962 0.18895 0.18823 0.18745 0.18660 0.18566 0.18464 0.18349 0.17987 0.17416 0.14987 0.0181 0.0186 0.0190 0.0193 0.0195 0.0199 0.0203 0.0205 0.0208 0.0210 0.0214 0.0217 0.0220 0.0221 0.0222 0.0225 0.0227 0.0229 0.0230 0.0232 0.0234 0.0235 0.0237 0.0238 0.0239 0.0241 0.0242 0.0243 0.0244 0.0245 0.0246 0.0247 0.0250 0.0252 0.0254 0.0257 0.0259 0.0261 0.0263 0.0264 0.0266 0.0268 0.0271 0.0275 0.0278 0.0281 0.0284 0.0288 0.0291 0.0294 0.0297 0.0300 0.0307 0.0313 0.0320 0.0328 0.0335 0.0343 0.0352 0.0362 0.0373 0.0385 0.0423 0.0488 — *Temperatures on ITS-90 scale b Bubble and dew points at one standard atmosphere c Critical Pressure 30.28 2009 ASHRAE Handbook—Fundamentals Fig. 13 Pressure-Enthalpy Diagram for Refrigerant 407C Thermophysical Properties of Refrigerants Refrigerant 407C [R-32/125/134a (23/25/52)] Properties of Liquid on Bubble Line and Vapor on Dew Line PresTemp.,* °F sure, psia Bubble Dew 1 –125.19 1.5 –115.58 2 –108.36 2.5 –102.52 3 –97.57 4 –89.43 5 –82.81 6 –77.20 7 –72.30 8 –67.94 10 –60.38 12 –53.96 14 –48.34 14.7b –46.53 16 –43.32 18 –38.77 20 –34.61 22 –30.76 24 –27.18 26 –23.83 28 –20.66 30 –17.67 32 –14.84 34 –12.13 36 –9.55 38 –7.07 40 –4.70 42 –2.41 44 –0.20 46 1.93 48 3.98 50 5.98 55 10.71 60 15.13 65 19.27 70 23.18 75 26.88 80 30.39 85 33.75 90 36.96 95 40.04 100 43.00 110 48.60 120 53.83 130 58.75 140 63.39 150 67.79 160 71.98 170 75.97 180 79.80 190 83.47 200 87.00 220 93.69 240 99.94 260 105.82 280 111.37 300 116.64 320 121.66 340 126.45 360 131.03 380 135.43 400 139.66 450 149.59 500 158.73 550 167.22 600 175.17 650 182.79 673.36c 186.94 –111.30 –101.85 –94.75 –88.99 –84.12 –76.11 –69.61 –64.09 –59.27 –54.97 –47.55 –41.23 –35.71 –33.93 –30.78 –26.31 –22.23 –18.45 –14.93 –11.64 –8.54 –5.60 –2.82 –0.17 2.37 4.79 7.12 9.37 11.53 13.61 15.63 17.58 22.21 26.53 30.58 34.40 38.02 41.46 44.73 47.87 50.87 53.75 59.21 64.30 69.08 73.59 77.86 81.92 85.79 89.49 93.04 96.45 102.90 108.92 114.56 119.88 124.91 129.69 134.24 138.58 142.73 146.71 155.98 164.41 172.09 179.07 185.22 186.94 Enthalpy, DenBtu/lb sity, Volume, 3 3/lb ft lb/ft Liquid Vapor Liquid Vapor 94.24 93.28 92.55 91.97 91.47 90.64 89.97 89.40 88.89 88.44 87.66 86.98 86.39 86.19 85.85 85.36 84.91 84.50 84.10 83.73 83.38 83.05 82.73 82.43 82.14 81.85 81.58 81.32 81.06 80.82 80.58 80.34 79.78 79.25 78.75 78.27 77.82 77.38 76.95 76.54 76.15 75.76 75.02 74.32 73.64 72.99 72.37 71.76 71.17 70.59 70.02 69.47 68.40 67.35 66.33 65.33 64.34 63.37 62.39 61.42 60.44 59.46 56.92 54.21 51.15 47.39 41.60 31.59 43.0887 29.4430 22.4776 18.2333 15.3685 11.7361 9.5211 8.0252 6.9450 6.1272 4.9690 4.1864 3.6210 3.4593 3.1928 2.8570 2.5862 2.3632 2.1761 2.0169 1.8798 1.7603 1.6553 1.5622 1.4791 1.4045 1.3371 1.2759 1.2201 1.1690 1.1220 1.0786 0.9835 0.9037 0.8359 0.7774 0.7264 0.6816 0.6419 0.6064 0.5746 0.5458 0.4959 0.4540 0.4183 0.3875 0.3607 0.3372 0.3163 0.2976 0.2808 0.2656 0.2393 0.2171 0.1982 0.1819 0.1676 0.1550 0.1438 0.1337 0.1246 0.1163 0.0984 0.0835 0.0706 0.0586 0.0457 0.0317 –26.34 –23.40 –21.18 –19.39 –17.87 –15.37 –13.34 –11.60 –10.09 –8.74 –6.39 –4.38 –2.62 –2.06 –1.05 0.39 1.70 2.92 4.06 5.13 6.15 7.10 8.02 8.89 9.72 10.53 11.30 12.04 12.76 13.46 14.13 14.79 16.34 17.81 19.19 20.49 21.74 22.92 24.06 25.16 26.21 27.23 29.16 30.99 32.72 34.36 35.94 37.45 38.90 40.30 41.66 42.97 45.49 47.88 50.17 52.36 54.48 56.53 58.53 60.47 62.38 64.25 68.84 73.37 78.00 83.04 89.56 99.99 93.96 95.34 96.37 97.21 97.92 99.09 100.03 100.83 101.52 102.13 103.19 104.08 104.85 105.10 105.54 106.15 106.71 107.22 107.70 108.14 108.55 108.93 109.30 109.64 109.97 110.28 110.58 110.86 111.13 111.39 111.64 111.88 112.44 112.96 113.44 113.88 114.29 114.67 115.03 115.37 115.68 115.98 116.53 117.03 117.47 117.88 118.24 118.57 118.87 119.15 119.39 119.61 119.99 120.29 120.52 120.68 120.78 120.82 120.80 120.73 120.61 120.42 119.71 118.56 116.83 114.18 109.19 99.99 Entropy, Btu/lb·°F Liquid –0.07002 –0.06135 –0.05499 –0.04994 –0.04572 –0.03889 –0.03345 –0.02889 –0.02496 –0.02149 –0.01556 –0.01059 –0.00629 –0.00492 –0.00249 0.00092 0.00402 0.00687 0.00950 0.01196 0.01426 0.01643 0.01848 0.02042 0.02227 0.02404 0.02573 0.02735 0.02891 0.03041 0.03186 0.03326 0.03656 0.03963 0.04250 0.04519 0.04773 0.05014 0.05243 0.05462 0.05671 0.05871 0.06250 0.06602 0.06932 0.07244 0.07538 0.07818 0.08086 0.08341 0.08587 0.08823 0.09271 0.09691 0.10088 0.10464 0.10824 0.11168 0.11500 0.11821 0.12132 0.12435 0.13167 0.13879 0.14595 0.15363 0.16351 0.17797 Vapor 0.28254 0.27716 0.27346 0.27066 0.26841 0.26495 0.26234 0.26025 0.25852 0.25705 0.25464 0.25272 0.25114 0.25065 0.24979 0.24863 0.24760 0.24668 0.24586 0.24510 0.24442 0.24378 0.24319 0.24265 0.24213 0.24165 0.24120 0.24077 0.24036 0.23998 0.23961 0.23926 0.23844 0.23771 0.23703 0.23641 0.23584 0.23530 0.23480 0.23432 0.23387 0.23344 0.23265 0.23191 0.23122 0.23058 0.22997 0.22938 0.22882 0.22828 0.22776 0.22725 0.22625 0.22529 0.22434 0.22340 0.22246 0.22152 0.22056 0.21958 0.21857 0.21753 0.21473 0.21152 0.20765 0.20253 0.19401 0.17797 Specific Heat cp , Btu/lb·°F 30.29 Thermal Cond., Vel. of Sound, Viscosity, Btu/h·ft·°F Surface Presft/s lbm /ft·h cp /cv Tension, sure, Liquid Vapor Vapor Liquid Vapor Liquid Vapor Liquid Vapor dyne/cm psia 0.3065 0.3063 0.3063 0.3065 0.3068 0.3074 0.3081 0.3087 0.3094 0.3100 0.3112 0.3123 0.3133 0.3137 0.3143 0.3153 0.3162 0.3172 0.3180 0.3189 0.3197 0.3205 0.3213 0.3221 0.3229 0.3236 0.3244 0.3251 0.3258 0.3265 0.3272 0.3279 0.3296 0.3313 0.3329 0.3346 0.3362 0.3378 0.3393 0.3409 0.3424 0.3440 0.3471 0.3502 0.3533 0.3564 0.3596 0.3628 0.3660 0.3693 0.3727 0.3761 0.3832 0.3907 0.3986 0.4070 0.4161 0.4260 0.4368 0.4487 0.4620 0.4769 0.5248 0.5982 0.7284 1.0271 2.4146 — 0.1568 1.183 0.1600 1.182 0.1624 1.181 0.1644 1.181 0.1662 1.181 0.1693 1.181 0.1719 1.182 0.1742 1.182 0.1762 1.183 0.1781 1.184 0.1814 1.186 0.1844 1.188 0.1871 1.189 0.1880 1.190 0.1896 1.191 0.1919 1.193 0.1941 1.195 0.1961 1.197 0.1981 1.199 0.1999 1.201 0.2017 1.203 0.2034 1.205 0.2051 1.207 0.2067 1.209 0.2083 1.211 0.2098 1.213 0.2113 1.215 0.2127 1.217 0.2141 1.219 0.2155 1.221 0.2169 1.223 0.2182 1.225 0.2214 1.230 0.2246 1.235 0.2276 1.240 0.2305 1.245 0.2333 1.250 0.2361 1.255 0.2389 1.260 0.2416 1.266 0.2442 1.271 0.2468 1.276 0.2520 1.287 0.2570 1.298 0.2621 1.310 0.2671 1.321 0.2721 1.334 0.2772 1.346 0.2824 1.359 0.2876 1.373 0.2929 1.387 0.2983 1.401 0.3095 1.432 0.3213 1.466 0.3338 1.502 0.3473 1.542 0.3618 1.586 0.3777 1.635 0.3951 1.689 0.4143 1.750 0.4358 1.819 0.4600 1.897 0.5373 2.151 0.6546 2.541 0.8572 3.217 1.2973 4.683 3.0022 10.265 — — 3404 3300 3225 3166 3117 3037 2974 2921 2875 2835 2765 2707 2656 2639 2610 2570 2532 2498 2466 2436 2408 2382 2356 2332 2309 2288 2267 2246 2227 2208 2190 2172 2130 2091 2054 2019 1986 1955 1925 1896 1869 1842 1792 1745 1700 1658 1618 1580 1543 1508 1474 1441 1379 1320 1265 1211 1160 1111 1063 1017 972 927 819 712 606 498 387 — 484.3 489.5 493.3 496.2 498.6 502.4 505.3 507.6 509.5 511.1 513.8 515.8 517.4 517.9 518.7 519.8 520.7 521.4 522.0 522.6 523.0 523.4 523.6 523.9 524.1 524.2 524.3 524.3 524.4 524.4 524.3 524.3 524.0 523.6 523.2 522.6 522.0 521.3 520.6 519.8 519.0 518.1 516.3 514.3 512.3 510.2 508.0 505.7 503.4 501.1 498.7 496.3 491.4 486.3 481.2 475.9 470.5 465.1 459.6 454.0 448.3 442.6 427.8 412.5 396.5 379.3 358.6 — 2.112 1.867 1.712 1.601 1.515 1.389 1.299 1.229 1.172 1.125 1.050 0.992 0.945 0.930 0.906 0.872 0.843 0.817 0.794 0.773 0.754 0.737 0.721 0.706 0.692 0.679 0.667 0.656 0.645 0.635 0.626 0.617 0.596 0.577 0.560 0.544 0.530 0.517 0.505 0.493 0.483 0.473 0.454 0.438 0.423 0.409 0.396 0.385 0.374 0.364 0.354 0.345 0.328 0.313 0.299 0.287 0.275 0.264 0.253 0.243 0.234 0.225 0.204 0.184 0.164 0.144 — — 0.0199 0.0204 0.0208 0.0212 0.0214 0.0219 0.0222 0.0225 0.0228 0.0230 0.0234 0.0238 0.0241 0.0241 0.0243 0.0246 0.0248 0.0250 0.0252 0.0253 0.0255 0.0257 0.0258 0.0260 0.0261 0.0262 0.0263 0.0265 0.0266 0.0267 0.0268 0.0269 0.0272 0.0274 0.0276 0.0278 0.0280 0.0282 0.0284 0.0286 0.0288 0.0289 0.0293 0.0296 0.0299 0.0302 0.0304 0.0307 0.0310 0.0312 0.0315 0.0317 0.0323 0.0328 0.0333 0.0339 0.0344 0.0350 0.0356 0.0362 0.0368 0.0375 0.0394 0.0417 0.0447 0.0491 — — 0.0894 0.0874 0.0860 0.0848 0.0839 0.0823 0.0810 0.0799 0.0789 0.0781 0.0766 0.0754 0.0743 0.0739 0.0733 0.0725 0.0717 0.0710 0.0703 0.0697 0.0691 0.0685 0.0680 0.0675 0.0670 0.0666 0.0661 0.0657 0.0653 0.0649 0.0646 0.0642 0.0633 0.0626 0.0618 0.0611 0.0605 0.0598 0.0593 0.0587 0.0582 0.0576 0.0567 0.0558 0.0549 0.0541 0.0534 0.0527 0.0520 0.0514 0.0507 0.0501 0.0490 0.0480 0.0470 0.0461 0.0452 0.0444 0.0436 0.0428 0.0421 0.0414 0.0398 0.0383 0.0370 0.0363 — — 0.00385 0.00403 0.00416 0.00427 0.00436 0.00452 0.00465 0.00476 0.00485 0.00494 0.00509 0.00522 0.00534 0.00537 0.00544 0.00553 0.00562 0.00570 0.00578 0.00585 0.00592 0.00598 0.00605 0.00610 0.00616 0.00622 0.00627 0.00632 0.00637 0.00642 0.00646 0.00651 0.00663 0.00673 0.00684 0.00694 0.00703 0.00712 0.00721 0.00730 0.00739 0.00747 0.00763 0.00780 0.00796 0.00812 0.00828 0.00844 0.00860 0.00876 0.00893 0.00909 0.00942 0.00976 0.01011 0.01048 0.01086 0.01126 0.01169 0.01215 0.01264 0.01317 0.01469 0.01661 0.01920 0.02308 — — 25.65 24.66 23.93 23.34 22.84 22.02 21.36 20.81 20.32 19.90 19.16 18.54 18.00 17.82 17.52 17.08 16.69 16.33 15.99 15.68 15.38 15.11 14.84 14.59 14.36 14.13 13.91 13.71 13.51 13.31 13.13 12.95 12.53 12.13 11.77 11.43 11.10 10.80 10.51 10.23 9.97 9.72 9.25 8.81 8.41 8.03 7.67 7.33 7.01 6.71 6.42 6.15 5.64 5.17 4.73 4.33 3.96 3.61 3.28 2.97 2.68 2.41 1.79 1.26 0.80 0.42 0.11 0.00 1 1.5 2 2.5 3 4 5 6 7 8 10 12 14 14.7 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320 340 360 380 400 450 500 550 600 650 673.36 point *Temperatures on ITS-90 scale bBubble and dew points at one standard atmosphere c Critical Pressure 30.30 2009 ASHRAE Handbook—Fundamentals Fig. 14 Pressure-Enthalpy Diagram for Refrigerant 410A Thermophysical Properties of Refrigerants Refrigerant 410A [R-32/125 (50/50)] Properties of Liquid on Bubble Line and Vapor on Dew Line PresTemp.,* °F sure, psia Bubble Dew Enthalpy, Density, Volume, Btu/lb lb/ft3 ft3/lb Liquid Vapor Liquid Vapor 47.6458 32.5774 24.8810 20.1891 17.0211 13.0027 10.5514 8.8953 7.6992 6.7935 5.5105 4.6434 4.0168 3.8375 3.5423 3.1699 2.8698 2.6225 2.4151 2.2386 2.0865 1.9540 1.8375 1.7343 1.6422 1.5594 1.4847 1.4168 1.3549 1.2982 1.2460 1.1979 1.0925 1.0040 0.9287 0.8638 0.8073 0.7576 0.7135 0.6742 0.6389 0.6070 0.5515 0.5051 0.4655 0.4314 0.4016 0.3755 0.3523 0.3316 0.3130 0.2962 0.2669 0.2424 0.2215 0.2034 0.1876 0.1736 0.1613 0.1501 0.1401 0.1310 0.1114 0.0952 0.0814 0.0690 0.0293 –30.90 –27.97 –25.76 –23.98 –22.47 –19.98 –17.96 –16.24 –14.74 –13.40 –11.08 –9.10 –7.36 –6.80 –5.80 –4.39 –3.09 –1.89 –0.77 0.28 1.27 2.22 3.11 3.97 4.79 5.57 6.33 7.06 7.76 8.45 9.11 9.75 11.27 12.70 14.05 15.33 16.54 17.70 18.81 19.88 20.91 21.90 23.79 25.57 27.25 28.85 30.38 31.85 33.27 34.63 35.95 37.22 39.67 41.99 44.21 46.34 48.40 50.38 52.31 54.19 56.03 57.83 62.23 66.54 70.89 75.47 90.97 100.62 101.90 102.86 103.63 104.27 105.33 106.18 106.89 107.50 108.05 108.97 109.75 110.42 110.63 111.01 111.54 112.01 112.45 112.85 113.22 113.56 113.88 114.19 114.47 114.74 115.00 115.24 115.47 115.69 115.90 116.10 116.30 116.75 117.16 117.53 117.88 118.20 118.49 118.77 119.02 119.26 119.48 119.89 120.24 120.56 120.83 121.08 121.29 121.48 121.65 121.79 121.91 122.09 122.20 122.25 122.24 122.18 122.07 121.91 121.70 121.44 121.13 120.14 118.80 117.02 114.59 90.97 Entropy, Btu/lb·°F Liquid 30.31 Vel. of Sound, Viscosity, Specific Heat cp , Thermal Cond., Surface Presft/s lbm /ft·h Btu/lb·°F Btu/h·ft·°F cp /cv Tension, sure, Vapor Liquid Vapor Vapor Liquid Vapor Liquid Vapor Liquid Vapor dyne/cm psia 1.795 1.605 1.483 1.394 1.325 1.222 1.148 1.090 1.043 1.003 0.940 0.891 0.850 0.838 0.817 0.788 0.763 0.740 0.720 0.702 0.686 0.671 0.657 0.644 0.632 0.621 0.610 0.600 0.591 0.582 0.574 0.566 0.547 0.530 0.515 0.502 0.489 0.477 0.467 0.457 0.447 0.438 0.422 0.407 0.394 0.381 0.370 0.360 0.350 0.341 0.332 0.324 0.309 0.296 0.283 0.272 0.261 0.251 0.242 0.233 0.225 0.217 0.198 0.181 0.164 0.147 — 0.0196 0.0201 0.0205 0.0208 0.0211 0.0216 0.0219 0.0223 0.0225 0.0228 0.0232 0.0235 0.0238 0.0239 0.0241 0.0244 0.0246 0.0248 0.0250 0.0252 0.0254 0.0255 0.0257 0.0258 0.0260 0.0261 0.0262 0.0264 0.0265 0.0266 0.0267 0.0268 0.0271 0.0273 0.0275 0.0278 0.0280 0.0282 0.0284 0.0285 0.0287 0.0289 0.0292 0.0295 0.0298 0.0301 0.0304 0.0306 0.0309 0.0311 0.0314 0.0317 0.0321 0.0326 0.0330 0.0335 0.0340 0.0345 0.0350 0.0355 0.0361 0.0366 0.0381 0.0399 0.0421 0.0450 — 0.1043 0.1023 0.1008 0.0996 0.0985 0.0968 0.0954 0.0942 0.0931 0.0922 0.0905 0.0891 0.0879 0.0875 0.0868 0.0858 0.0849 0.0841 0.0833 0.0826 0.0819 0.0813 0.0806 0.0801 0.0795 0.0790 0.0785 0.0780 0.0775 0.0771 0.0766 0.0762 0.0752 0.0743 0.0734 0.0726 0.0719 0.0711 0.0704 0.0698 0.0692 0.0685 0.0674 0.0664 0.0654 0.0645 0.0636 0.0628 0.0620 0.0612 0.0605 0.0598 0.0585 0.0573 0.0562 0.0552 0.0542 0.0533 0.0524 0.0515 0.0507 0.0499 0.0481 0.0465 0.0451 0.0440 — 0.00421 0.00431 0.00439 0.00446 0.00451 0.00461 0.00469 0.00476 0.00482 0.00488 0.00498 0.00507 0.00515 0.00517 0.00522 0.00528 0.00535 0.00540 0.00546 0.00551 0.00556 0.00561 0.00565 0.00570 0.00574 0.00578 0.00582 0.00586 0.00589 0.00593 0.00597 0.00600 0.00610 0.00619 0.00628 0.00636 0.00645 0.00653 0.00661 0.00669 0.00677 0.00684 0.00700 0.00715 0.00730 0.00745 0.00760 0.00775 0.00791 0.00807 0.00823 0.00839 0.00873 0.00908 0.00945 0.00983 0.01024 0.01067 0.01113 0.01162 0.01214 0.01271 0.01433 0.01636 0.01902 0.02275 — 25.62 1 24.64 1.5 23.91 2 23.32 2.5 22.82 3 22.01 4 21.35 5 20.80 6 20.32 7 19.90 8 19.16 10 18.55 12 18.01 14 17.84 14.7 17.53 16 17.10 18 16.71 20 16.35 22 16.02 24 15.71 26 15.42 28 15.14 30 14.88 32 14.63 34 14.40 36 14.17 38 13.96 40 13.75 42 13.55 44 13.36 46 13.18 48 13.00 50 12.58 55 12.20 60 11.83 65 11.49 70 11.17 75 10.87 80 10.59 85 10.31 90 10.05 95 9.80 100 9.34 110 8.91 120 8.50 130 8.13 140 7.78 150 7.44 160 7.13 170 6.83 180 6.55 190 6.28 200 5.77 220 5.31 240 4.88 260 4.48 280 4.11 300 3.76 320 3.44 340 3.13 360 2.85 380 2.58 400 1.96 450 1.44 500 0.98 550 0.59 600 0.00 692.78 c Critical point 1 –135.16 –134.98 92.02 1.5 –126.03 –125.87 91.10 2 –119.18 –119.02 90.41 2.5 –113.63 –113.48 89.84 3 –108.94 –108.78 89.36 4 –101.22 –101.07 88.57 5 –94.94 –94.80 87.92 6 –89.63 –89.48 87.36 7 –84.98 –84.84 86.87 8 –80.85 –80.71 86.44 10 –73.70 –73.56 85.67 12 –67.62 –67.48 85.02 14 –62.31 –62.16 84.44 84.26 14.70b –60.60 –60.46 16 –57.56 –57.42 83.93 18 –53.27 –53.13 83.45 20 –49.34 –49.19 83.02 22 –45.70 –45.56 82.61 24 –42.32 –42.18 82.23 26 –39.15 –39.01 81.87 28 –36.17 –36.02 81.54 30 –33.35 –33.20 81.21 32 –30.68 –30.53 80.90 34 –28.13 –27.98 80.61 36 –25.69 –25.54 80.33 38 –23.36 –23.20 80.05 40 –21.12 –20.96 79.79 42 –18.96 –18.81 79.54 44 –16.89 –16.73 79.29 46 –14.88 –14.73 79.05 48 –12.94 –12.79 78.82 50 –11.07 –10.91 78.59 55 –6.62 –6.45 78.05 60 –2.46 –2.30 77.54 65 1.43 1.60 77.06 70 5.10 5.27 76.60 75 8.58 8.75 76.15 80 11.88 12.06 75.73 85 15.03 15.21 75.32 90 18.05 18.22 74.93 95 20.93 21.11 74.54 100 23.71 23.89 74.17 110 28.96 29.14 73.46 120 33.86 34.05 72.78 130 38.46 38.65 72.13 140 42.80 42.99 71.51 150 46.91 47.11 70.90 160 50.82 51.02 70.32 170 54.56 54.76 69.75 180 58.13 58.33 69.20 190 61.55 61.76 68.66 200 64.84 65.05 68.13 220 71.07 71.28 67.10 240 76.89 77.10 66.11 260 82.35 82.57 65.14 280 87.51 87.73 64.19 300 92.40 92.61 63.26 320 97.04 97.26 62.34 340 101.48 101.69 61.42 360 105.71 105.93 60.52 380 109.78 109.99 59.61 400 113.68 113.89 58.70 450 122.82 123.01 56.39 500 131.19 131.38 53.97 550 138.93 139.09 51.32 600 146.12 146.25 48.24 34.18 692.78c 158.40 158.40 *Temperatures on ITS-90 scale –0.08330 0.32188 0.3215 0.1568 1.228 3369 518.6 –0.07439 0.31477 0.3212 0.1600 1.227 3287 524.5 –0.06786 0.30981 0.3213 0.1626 1.227 3226 528.7 –0.06267 0.30602 0.3214 0.1648 1.228 3176 531.9 –0.05834 0.30296 0.3216 0.1668 1.228 3135 534.6 –0.05133 0.29820 0.3221 0.1703 1.229 3066 538.8 –0.04574 0.29455 0.3226 0.1733 1.230 3010 542.0 –0.04107 0.29162 0.3231 0.1760 1.232 2963 544.6 –0.03704 0.28916 0.3236 0.1785 1.233 2922 546.7 –0.03349 0.28705 0.3241 0.1807 1.234 2885 548.5 –0.02743 0.28356 0.3251 0.1848 1.237 2821 551.5 –0.02235 0.28075 0.3261 0.1884 1.240 2767 553.8 –0.01795 0.27840 0.3270 0.1917 1.243 2720 555.6 –0.01655 0.27766 0.3274 0.1928 1.244 2704 556.2 –0.01407 0.27638 0.3279 0.1947 1.245 2677 557.1 –0.01059 0.27461 0.3288 0.1975 1.248 2639 558.4 –0.00743 0.27305 0.3297 0.2002 1.251 2603 559.4 –0.00452 0.27164 0.3305 0.2027 1.254 2571 560.3 –0.00184 0.27036 0.3313 0.2050 1.256 2540 561.1 0.00067 0.26919 0.3321 0.2073 1.259 2512 561.7 0.00301 0.26811 0.3329 0.2094 1.261 2485 562.3 0.00522 0.26711 0.3337 0.2115 1.264 2459 562.7 0.00730 0.26617 0.3345 0.2135 1.267 2435 563.1 0.00928 0.26530 0.3352 0.2154 1.269 2412 563.4 0.01116 0.26448 0.3360 0.2173 1.272 2390 563.7 0.01296 0.26371 0.3367 0.2191 1.274 2368 563.9 0.01467 0.26297 0.3374 0.2208 1.277 2348 564.1 0.01632 0.26228 0.3382 0.2226 1.279 2328 564.3 0.01791 0.26162 0.3389 0.2242 1.282 2309 564.4 0.01943 0.26098 0.3396 0.2259 1.284 2291 564.4 0.02090 0.26038 0.3403 0.2275 1.287 2273 564.5 0.02232 0.25980 0.3410 0.2290 1.289 2256 564.5 0.02568 0.25845 0.3427 0.2328 1.295 2215 564.4 0.02880 0.25722 0.3445 0.2365 1.301 2176 564.2 0.03171 0.25610 0.3462 0.2400 1.308 2140 563.9 0.03444 0.25505 0.3478 0.2434 1.314 2105 563.5 0.03702 0.25408 0.3495 0.2467 1.320 2073 563.0 0.03946 0.25316 0.3512 0.2499 1.326 2042 562.4 0.04178 0.25231 0.3528 0.2531 1.333 2012 561.8 0.04400 0.25149 0.3545 0.2562 1.339 1983 561.2 0.04611 0.25072 0.3561 0.2592 1.345 1956 560.4 0.04815 0.24999 0.3578 0.2622 1.352 1929 559.7 0.05198 0.24862 0.3611 0.2681 1.365 1879 558.1 0.05555 0.24736 0.3644 0.2738 1.378 1832 556.3 0.05890 0.24618 0.3678 0.2795 1.392 1787 554.5 0.06205 0.24508 0.3712 0.2852 1.406 1744 552.6 0.06503 0.24403 0.3746 0.2908 1.420 1704 550.6 0.06787 0.24304 0.3781 0.2965 1.435 1666 548.6 0.07057 0.24210 0.3816 0.3022 1.451 1629 546.5 0.07316 0.24119 0.3851 0.3080 1.467 1593 544.4 0.07565 0.24031 0.3888 0.3139 1.483 1559 542.2 0.07804 0.23946 0.3925 0.3200 1.500 1526 540.0 0.08258 0.23783 0.4001 0.3325 1.537 1462 535.6 0.08683 0.23628 0.4081 0.3457 1.576 1403 531.0 0.09084 0.23478 0.4165 0.3599 1.619 1346 526.3 0.09464 0.23333 0.4255 0.3751 1.665 1293 521.5 0.09827 0.23190 0.4350 0.3915 1.716 1241 516.6 0.10175 0.23049 0.4452 0.4094 1.772 1191 511.6 0.10509 0.22909 0.4564 0.4290 1.833 1143 506.6 0.10832 0.22769 0.4685 0.4507 1.901 1097 501.4 0.11145 0.22629 0.4820 0.4747 1.977 1051 496.2 0.11450 0.22488 0.4971 0.5016 2.063 1007 490.9 0.12182 0.22124 0.5443 0.5857 2.333 900 477.2 0.12888 0.21732 0.6143 0.7083 2.728 795 462.8 0.13590 0.21295 0.7303 0.9059 3.367 692 447.5 0.14320 0.20777 0.9603 1.2829 4.579 588 431.0 0.16781 0.16781 — — — — — bBubble and dew points at one standard atmosphere Pressure 30.32 2009 ASHRAE Handbook—Fundamentals Fig. 15 Pressure-Enthalpy Diagram for Refrigerant 507A Thermophysical Properties of Refrigerants Refrigerant 507A [R-125/143a (50/50)] Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –52.13b –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 159.12c Enthalpy, Pres- Density, Volume, Btu/lb sure,** lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.386 0.497 0.634 0.801 1.004 1.249 1.541 1.887 2.295 2.773 3.329 3.974 4.715 5.566 6.535 7.636 8.879 10.280 11.849 13.603 14.696 15.554 17.719 20.112 22.750 25.649 28.827 32.300 36.086 40.203 44.671 49.508 54.733 60.367 66.429 72.941 79.923 87.396 95.384 103.91 112.99 122.65 132.92 143.82 155.38 167.62 180.56 194.24 208.68 223.92 239.97 256.88 274.68 293.40 313.08 333.77 355.50 378.33 402.31 427.52 454.04 481.99 511.55 537.40 92.41 91.88 91.36 90.84 90.32 89.80 89.29 88.77 88.26 87.75 87.23 86.72 86.20 85.68 85.16 84.64 84.11 83.58 83.05 82.51 82.20 81.97 81.43 80.88 80.33 79.77 79.20 78.63 78.05 77.46 76.87 76.27 75.66 75.04 74.41 73.77 73.12 72.45 71.78 71.09 70.38 69.66 68.92 68.16 67.39 66.58 65.76 64.90 64.02 63.10 62.14 61.14 60.09 58.99 57.82 56.57 55.22 53.76 52.15 50.32 48.19 45.55 41.76 30.64 86.952 68.522 54.501 43.729 35.377 28.844 23.692 19.596 16.315 13.669 11.521 9.7644 8.3201 7.1254 6.1316 5.3004 4.6018 4.0116 3.5108 3.0839 2.8676 2.7184 2.4043 2.1331 1.8983 1.6941 1.5160 1.3601 1.2231 1.1025 0.9960 0.9016 0.8177 0.7430 0.6763 0.6165 0.5629 0.5146 0.4711 0.4318 0.3962 0.3638 0.3344 0.3076 0.2832 0.2608 0.2403 0.2214 0.2041 0.1880 0.1732 0.1595 0.1468 0.1349 0.1238 0.1134 0.1036 0.0943 0.0855 0.0769 0.0684 0.0597 0.0499 0.0326 –32.027 –30.571 –29.121 –27.677 –26.235 –24.796 –23.359 –21.921 –20.484 –19.045 –17.604 –16.161 –14.716 –13.266 –11.813 –10.356 –8.894 –7.427 –5.954 –4.475 –3.625 –2.990 –1.499 0.000 1.506 3.020 4.541 6.071 7.610 9.158 10.716 12.284 13.862 15.452 17.052 18.665 20.290 21.929 23.581 25.249 26.931 28.630 30.346 32.080 33.834 35.609 37.406 39.228 41.076 42.952 44.860 46.803 48.784 50.809 52.885 55.018 57.221 59.509 61.903 64.439 67.182 70.265 74.107 83.010 67.009 67.711 68.416 69.126 69.838 70.554 71.272 71.993 72.716 73.440 74.166 74.892 75.619 76.346 77.073 77.800 78.525 79.248 79.970 80.690 81.101 81.406 82.119 82.829 83.534 84.235 84.931 85.621 86.304 86.981 87.651 88.313 88.966 89.610 90.245 90.868 91.480 92.079 92.664 93.234 93.788 94.324 94.840 95.336 95.808 96.255 96.675 97.065 97.421 97.740 98.019 98.251 98.431 98.551 98.600 98.568 98.435 98.177 97.759 97.125 96.173 94.697 92.081 83.010 Entropy, Btu/lb·°F Liquid –0.08831 –0.08365 –0.07908 –0.07460 –0.07019 –0.06586 –0.06160 –0.05740 0.05326 –0.04918 –0.04515 –0.04117 –0.03723 –0.03335 –0.02950 –0.02569 –0.02192 –0.01819 –0.01449 –0.01082 –0.00873 –0.00719 –0.00358 0.00000 0.00355 0.00708 0.01058 0.01407 0.01753 0.02097 0.02439 0.02779 0.03118 0.03455 0.03791 0.04126 0.04459 0.04791 0.05123 0.05454 0.05784 0.06114 0.06444 0.06773 0.07103 0.07434 0.07764 0.08096 0.08429 0.08764 0.09101 0.09441 0.09784 0.10130 0.10482 0.10840 0.11206 0.11583 0.11973 0.12382 0.12821 0.13311 0.13918 0.15339 Vapor 0.23154 0.22872 0.22607 0.22358 0.22125 0.21906 0.21701 0.21509 0.21328 0.21159 0.21001 0.20852 0.20713 0.20583 0.20462 0.20348 0.20242 0.20143 0.20050 0.19963 0.19916 0.19882 0.19807 0.19737 0.19671 0.19610 0.19553 0.19500 0.19450 0.19404 0.19360 0.19319 0.19281 0.19245 0.19211 0.19179 0.19148 0.19118 0.19089 0.19061 0.19032 0.19004 0.18976 0.18946 0.18916 0.18884 0.18850 0.18814 0.18775 0.18732 0.18686 0.18634 0.18576 0.18511 0.18438 0.18354 0.18256 0.18141 0.18003 0.17833 0.17616 0.17318 0.16842 0.15339 Specific Heat cp , Btu/lb·°F Liquid Vapor 0.2919 0.2904 0.2893 0.2885 0.2879 0.2876 0.2874 0.2874 0.2875 0.2878 0.2882 0.2887 0.2893 0.2900 0.2908 0.2917 0.2926 0.2937 0.2948 0.2960 0.2967 0.2972 0.2985 0.30000 0.3014 0.3030 0.3046 0.3063 0.3081 0.3100 0.3119 0.3140 0.3161 0.3184 0.3208 0.3233 0.3260 0.3288 0.3318 0.3350 0.3384 0.3421 0.3460 0.3503 0.3549 0.3599 0.3654 0.3715 0.3783 0.3858 0.3944 0.4043 0.4157 0.4291 0.4453 0.4652 0.4904 0.5237 0.5700 0.6399 0.7590 1.0130 1.9550 0.1470 0.1487 0.1504 0.1522 0.1540 0.1558 0.1576 0.1595 0.1614 0.1633 0.1652 0.1672 0.1692 0.1712 0.1733 0.1754 0.1776 0.1798 0.1821 0.1844 0.1858 0.1868 0.1893 0.1918 0.1944 0.1971 0.1998 0.2026 0.2056 0.2086 0.2117 0.2149 0.2183 0.2218 0.2254 0.2291 0.2330 0.2371 0.2414 0.2460 0.2508 0.2560 0.2616 0.2676 0.2742 0.2814 0.2894 0.2983 0.3083 0.3196 0.3325 0.3475 0.3650 0.3858 0.4112 0.4427 0.4833 0.5375 0.6142 0.7313 0.9326 1.3606 2.8693 cp /cv Vapor 1.1650 1.1637 1.1626 1.1616 1.1607 1.1599 1.1593 1.1588 1.1584 1.1581 1.1580 1.1581 1.1583 1.1586 1.1592 1.1599 1.1607 1.1618 1.1631 1.1646 1.1655 1.1663 1.1682 1.1704 1.1728 1.1755 1.1785 1.1818 1.1854 1.1894 1.1938 1.1986 1.2038 1.2095 1.2157 1.2226 1.2301 1.2384 1.2476 1.2577 1.2690 1.2816 1.2956 1.3113 1.3289 1.3488 1.3713 1.3970 1.4265 1.4606 1.5003 1.5471 1.6029 1.6706 1.7541 1.8597 1.9972 2.1831 2.4480 2.8546 3.5556 5.0420 10.2379 Vel. of Sound, ft/s Liquid Vapor 3468 3379 3298 3222 3151 3084 3021 2961 2904 2848 2795 2743 2692 2643 2595 2547 2501 2454 2409 2364 2338 2319 2275 2231 2187 2143 2100 2056 2013 1970 1926 1883 1840 1797 1753 1710 1666 1623 1579 1535 1491 1447 1403 1358 1313 1268 1222 1176 1130 1083 1035 987 938 888 838 786 732 677 620 560 497 429 353 0 424.1 427.0 429.8 432.5 435.2 437.8 440.3 442.7 445.1 447.4 449.6 451.7 453.7 455.6 457.4 459.0 460.6 462.1 463.4 464.6 465.2 465.6 466.6 467.4 468.0 468.5 468.8 469.0 469.0 468.9 468.5 468.0 467.3 466.4 465.3 464.0 462.5 460.8 458.8 456.6 454.2 451.6 448.7 445.5 442.0 438.3 434.3 430.0 425.3 420.3 414.9 409.2 403.1 396.5 389.5 382.0 373.9 365.3 356.1 346.1 335.3 323.4 309.4 0.0 Viscosity, lbm /ft·h Liquid Vapor — 2.053 1.922 1.804 1.697 1.600 1.512 1.431 1.356 1.288 1.225 1.166 1.112 1.061 1.014 0.969 0.928 0.889 0.852 0.818 0.799 0.785 0.754 0.725 0.697 0.671 0.646 0.622 0.599 0.578 0.557 0.537 0.518 0.499 0.482 0.464 0.448 0.432 0.417 0.402 0.388 0.374 0.360 0.347 0.334 0.322 0.310 0.298 0.286 0.275 0.264 0.253 0.242 0.231 0.220 0.209 0.198 0.187 0.176 0.164 0.151 0.137 0.119 — — — 0.0176 0.0179 0.0181 0.0184 0.0186 0.0189 0.0192 0.0194 0.0197 0.0199 0.0202 0.0205 0.0207 0.0210 0.0212 0.0215 0.0217 0.0220 0.0221 0.0222 0.0225 0.0227 0.0230 0.0232 0.0235 0.0238 0.0240 0.0243 0.0245 0.0248 0.0250 0.0253 0.0256 0.0258 0.0261 0.0264 0.0267 0.0270 0.0273 0.0276 0.0280 0.0283 0.0287 0.0291 0.0295 0.0300 0.0304 0.0309 0.0315 0.0321 0.0327 0.0334 0.0343 0.0352 0.0362 0.0375 0.0389 0.0408 0.0432 0.0466 0.0524 — b Normal 30.33 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.0724 0.0715 0.0705 0.0696 0.0687 0.0678 0.0670 0.0661 0.0652 0.0644 0.0636 0.0627 0.0619 0.0611 0.0603 0.0595 0.0587 0.0579 0.0572 0.0564 0.0560 0.0557 0.0549 0.0542 0.0534 0.0527 0.0520 0.0512 0.0505 0.0498 0.0491 0.0484 0.0477 0.0470 0.0463 0.0457 0.0450 0.0443 0.0436 0.0430 0.0423 0.0416 0.0410 0.0403 0.0397 0.0390 0.0384 0.0377 0.0371 0.0364 0.0358 0.0351 0.0344 0.0338 0.0331 0.0325 0.0318 0.0311 0.0305 0.0299 0.0294 0.0293 0.0305 0.00330 0.00339 0.00349 0.00358 0.00368 0.00378 0.00388 0.00398 0.00408 0.00418 0.00429 0.00439 0.00450 0.00461 0.00471 0.00482 0.00493 0.00504 0.00516 0.00527 0.00534 0.00538 0.00550 0.00562 0.00574 0.00585 0.00598 0.00610 0.00622 0.00635 0.00647 0.00660 0.00673 0.00687 0.00700 0.00714 0.00728 0.00743 0.00759 0.00775 0.00792 0.00810 0.00829 0.00849 0.00871 0.00893 0.00918 0.00943 0.00971 0.01002 0.01035 0.01071 0.01112 0.01158 0.01210 0.01270 0.01341 0.01425 0.01530 0.01664 0.01846 0.02122 0.02681 18.45 18.20 17.94 17.67 17.41 17.14 16.87 16.59 16.31 16.03 15.75 15.46 15.17 14.88 14.58 14.28 13.98 13.68 13.37 13.06 12.88 12.75 12.43 12.12 11.80 11.48 11.15 10.83 10.50 10.17 9.84 9.51 9.18 8.85 8.51 8.18 7.84 7.51 7.17 6.84 6.50 6.17 5.83 5.50 5.17 4.84 4.52 4.19 3.87 3.55 3.24 2.93 2.62 2.32 2.03 1.74 1.47 1.20 0.94 0.70 0.48 0.27 0.10 0.00 –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 –55 –52.13 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 159.12 point *Temperatures on ITS-90 scale **Small deviations from azeotropic behavior occur at some conditions; tabulated pressures are average of bubble and dew-point pressures boiling point c Critical Pressure 30.34 2009 ASHRAE Handbook—Fundamentals Fig. 16 Pressure-Enthalpy Diagram for Refrigerant 717 (Ammonia) Thermophysical Properties of Refrigerants Refrigerant 717 (Ammonia) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –107.78a –100 –90 –80 –70 –60 –50 –40 –30 –27.99b –25 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 260 270.05c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.883 1.237 1.864 2.739 3.937 5.544 7.659 10.398 13.890 14.696 15.962 18.279 20.858 23.723 26.895 30.397 34.253 38.487 43.126 48.194 53.720 59.730 66.255 73.322 80.962 89.205 98.083 107.63 117.87 128.85 140.59 153.13 166.51 180.76 195.91 212.01 229.09 247.19 266.34 286.60 307.98 330.54 354.32 379.36 405.70 433.38 462.45 492.95 524.94 558.45 593.53 630.24 668.63 708.74 750.64 794.38 840.03 887.64 937.28 989.03 1042.96 1099.14 1157.69 1218.68 1282.24 1348.49 1489.71 1643.71 45.75 45.47 45.09 44.71 44.31 43.91 43.50 43.08 42.66 42.57 42.45 42.23 42.01 41.79 41.57 41.34 41.12 40.89 40.66 40.43 40.20 39.96 39.72 39.48 39.24 38.99 38.75 38.50 38.25 37.99 37.73 37.47 37.21 36.94 36.67 36.40 36.12 35.83 35.55 35.26 34.96 34.66 34.35 34.04 33.72 33.39 33.06 32.72 32.37 32.01 31.64 31.26 30.87 30.47 30.05 29.62 29.17 28.70 28.21 27.69 27.15 26.57 25.95 25.28 24.55 23.72 21.60 14.05 249.92 182.19 124.12 86.546 61.647 44.774 33.105 24.881 18.983 18.007 16.668 14.684 12.976 11.502 10.226 9.1159 8.1483 7.3020 6.5597 5.9067 5.3307 4.8213 4.3695 3.9680 3.6102 3.2906 3.0045 2.7479 2.5172 2.3094 2.1217 1.9521 1.7983 1.6588 1.5319 1.4163 1.3108 1.2144 1.1262 1.0452 0.9710 0.9026 0.8397 0.7817 0.7280 0.6785 0.6325 0.5899 0.5504 0.5136 0.4793 0.4473 0.4174 0.3895 0.3633 0.3387 0.3156 0.2938 0.2733 0.2538 0.2354 0.2178 0.2010 0.1849 0.1693 0.1540 0.1233 0.0712 –69.830 –61.994 –51.854 –41.637 –31.341 –20.969 –10.521 0.000 10.592 12.732 15.914 21.253 26.609 31.982 37.372 42.779 48.203 53.644 59.103 64.579 70.072 75.585 81.116 86.666 92.237 97.828 103.441 109.076 114.734 120.417 126.126 131.861 137.624 143.417 149.241 155.098 160.990 166.919 172.887 178.896 184.949 191.049 197.199 203.403 209.663 215.984 222.370 228.827 235.359 241.973 248.675 255.472 262.374 269.390 276.530 283.809 291.240 298.842 306.637 314.651 322.918 331.483 340.404 349.766 359.695 370.391 395.943 473.253 568.765 572.260 576.688 581.035 585.288 589.439 593.476 597.387 601.162 601.904 602.995 604.789 606.544 608.257 609.928 611.554 613.135 614.669 616.154 617.590 618.974 620.305 621.582 622.803 623.967 625.072 626.115 627.097 628.013 628.864 629.647 630.359 630.999 631.564 632.052 632.460 632.785 633.025 633.175 633.232 633.193 633.053 632.807 632.451 631.978 631.383 630.659 629.798 628.791 627.630 626.302 624.797 623.100 621.195 619.064 616.686 614.035 611.081 607.788 604.112 599.996 595.371 590.142 584.183 577.309 569.240 547.139 473.253 Entropy, Btu/lb·°F Liquid –0.18124 –0.15922 –0.13142 –0.10416 –0.07741 –0.05114 –0.02534 0.00000 0.02491 0.02987 0.03720 0.04939 0.06148 0.07347 0.08536 0.09715 0.10885 0.12045 0.13197 0.14340 0.15474 0.16599 0.17717 0.18827 0.19929 0.21024 0.22111 0.23192 0.24266 0.25334 0.26396 0.27452 0.28503 0.29549 0.30590 0.31626 0.32659 0.33688 0.34713 0.35736 0.36757 0.37775 0.38792 0.39808 0.40824 0.41840 0.42857 0.43875 0.44896 0.45919 0.46947 0.47980 0.49019 0.50066 0.51121 0.52188 0.53267 0.54360 0.55472 0.56605 0.57763 0.58953 0.60182 0.61462 0.62809 0.64249 0.67662 0.78093 Vapor 1.63351 1.60421 1.56886 1.53587 1.50503 1.47614 1.44900 1.42347 1.39938 1.39470 1.38784 1.37660 1.36567 1.35502 1.34463 1.33450 1.32462 1.31496 1.30552 1.29629 1.28726 1.27842 1.26975 1.26125 1.25291 1.24472 1.23667 1.22875 1.22095 1.21327 1.20570 1.19823 1.19085 1.18356 1.17634 1.16920 1.16211 1.15508 1.14809 1.14115 1.13423 1.12733 1.12044 1.11356 1.10666 1.09975 1.09281 1.08582 1.07878 1.07167 1.06447 1.05717 1.04974 1.04217 1.03443 1.02649 1.01831 1.00986 1.00109 0.99193 0.98232 0.97216 0.96133 0.94966 0.93690 0.92269 0.88671 0.78093 point Specific Heat cp , Btu/lb·°F Liquid Vapor 1.0044 1.0100 1.0176 1.0254 1.0331 1.0406 1.0478 1.0549 1.0617 1.0631 1.0651 1.0684 1.0716 1.0749 1.0782 1.0814 1.0847 1.0880 1.0914 1.0948 1.0983 1.1019 1.1056 1.1094 1.1134 1.1175 1.1218 1.126 1.131 1.136 1.141 1.147 1.153 1.159 1.166 1.173 1.180 1.188 1.197 1.206 1.216 1.227 1.239 1.251 1.265 1.280 1.296 1.313 1.333 1.354 1.377 1.403 1.432 1.465 1.502 1.543 1.591 1.646 1.711 1.788 1.882 1.999 2.148 2.346 2.624 3.047 5.273 0.4930 0.4959 0.5003 0.5056 0.5118 0.5190 0.5271 0.5364 0.5467 0.5490 0.5524 0.5583 0.5646 0.5711 0.5781 0.5853 0.5929 0.6009 0.6092 0.6179 0.6271 0.6366 0.6465 0.6569 0.6678 0.6791 0.6909 0.703 0.716 0.730 0.744 0.758 0.774 0.790 0.807 0.824 0.843 0.862 0.883 0.905 0.928 0.952 0.978 1.006 1.035 1.067 1.101 1.138 1.178 1.222 1.270 1.322 1.381 1.446 1.519 1.602 1.697 1.806 1.935 2.088 2.272 2.501 2.790 3.171 3.693 4.460 8.106 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 1.3252 1.3262 1.3278 1.3296 1.3319 1.3346 1.3379 1.3419 1.3465 1.3475 1.3491 1.3520 1.3550 1.3584 1.3619 1.3657 1.3698 1.3742 1.3789 1.3840 1.3894 1.3951 1.4012 1.4078 1.4147 1.4222 1.4301 1.438 1.447 1.457 1.467 1.478 1.490 1.502 1.515 1.529 1.544 1.561 1.578 1.597 1.617 1.638 1.662 1.687 1.715 1.745 1.778 1.813 1.853 1.896 1.944 1.998 2.058 2.126 2.203 2.290 2.392 2.509 2.648 2.814 3.015 3.265 3.582 4.000 4.575 5.420 9.439 6969 6830 6666 6513 6367 6228 6092 5959 5827 5801 5762 5697 5632 5567 5503 5438 5373 5308 5243 5178 5113 5048 4982 4916 4850 4784 4717 4650 4583 4515 4447 4378 4309 4240 4170 4099 4028 3956 3884 3811 3737 3662 3587 3511 3434 3356 3277 3198 3117 3035 2952 2868 2783 2696 2608 2519 2428 2336 2243 2147 2050 1950 1848 1743 1634 1520 1271 0 1161.8 1173.8 1188.6 1202.9 1216.7 1229.7 1242.2 1253.9 1264.9 1267.1 1270.2 1275.2 1280.0 1284.7 1289.1 1293.3 1297.3 1301.1 1304.7 1308.0 1311.1 1314.0 1316.6 1319.0 1321.1 1323.0 1324.6 1325.9 1327.0 1327.8 1328.3 1328.6 1328.5 1328.2 1327.5 1326.6 1325.3 1323.7 1321.8 1319.5 1316.9 1313.9 1310.6 1306.9 1302.8 1298.3 1293.4 1288.1 1282.4 1276.2 1269.6 1262.4 1254.8 1246.7 1238.0 1228.7 1218.9 1208.4 1197.2 1185.4 1172.7 1159.1 1144.5 1128.8 1111.6 1092.6 1045.9 0.0 1.354 1.232 1.099 0.986 0.891 0.810 0.741 0.680 0.628 0.618 0.604 0.582 0.561 0.541 0.522 0.505 0.488 0.472 0.457 0.443 0.429 0.416 0.404 0.392 0.381 0.370 0.360 0.350 0.340 0.331 0.322 0.313 0.305 0.297 0.289 0.282 0.274 0.267 0.260 0.254 0.247 0.241 0.235 0.229 0.223 0.217 0.211 0.206 0.200 0.195 0.190 0.185 0.179 0.174 0.169 0.165 0.160 0.155 0.150 0.145 0.140 0.136 0.131 0.126 0.120 0.115 0.102 — 0.0165 0.0168 0.0171 0.0175 0.0179 0.0182 0.0186 0.0190 0.0194 0.0195 0.0196 0.0198 0.0200 0.0202 0.0204 0.0206 0.0208 0.0210 0.0212 0.0214 0.0216 0.0218 0.0220 0.0222 0.0224 0.0227 0.0229 0.0231 0.0233 0.0235 0.0237 0.0239 0.0241 0.0244 0.0246 0.0248 0.0250 0.0253 0.0255 0.0257 0.0260 0.0262 0.0265 0.0267 0.0270 0.0273 0.0276 0.0279 0.0282 0.0285 0.0288 0.0292 0.0296 0.0300 0.0304 0.0309 0.0314 0.0320 0.0326 0.0333 0.0340 0.0349 0.0359 0.0370 0.0383 0.0399 0.0446 — 30.35 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.4735 0.4647 0.4534 0.4422 0.4310 0.4198 0.4088 0.3978 0.3870 0.3849 0.3817 0.3764 0.3711 0.3658 0.3606 0.3555 0.3503 0.3453 0.3402 0.3352 0.3302 0.3253 0.3204 0.3155 0.3107 0.3059 0.3012 0.2965 0.2918 0.2872 0.2825 0.2780 0.2734 0.2689 0.2644 0.2600 0.2556 0.2512 0.2468 0.2424 0.2381 0.2338 0.2295 0.2253 0.2210 0.2168 0.2125 0.2083 0.2041 0.1999 0.1957 0.1916 0.1874 0.1832 0.1790 0.1748 0.1706 0.1663 0.1621 0.1578 0.1536 0.1492 0.1449 0.1406 0.1363 0.1320 0.1250 0.01135 0.01138 0.01143 0.01149 0.01158 0.01168 0.01180 0.01193 0.01209 0.01212 0.01217 0.01226 0.01236 0.01246 0.01256 0.01267 0.01279 0.01291 0.01304 0.01317 0.01331 0.01345 0.01360 0.01376 0.01392 0.01409 0.01426 0.01445 0.01464 0.01483 0.01504 0.01525 0.01548 0.01571 0.01595 0.01620 0.01646 0.01673 0.01702 0.01732 0.01763 0.01795 0.01829 0.01865 0.01903 0.01943 0.01986 0.02031 0.02079 0.02130 0.02185 0.02245 0.02310 0.02381 0.02458 0.02545 0.02641 0.02749 0.02872 0.03013 0.03178 0.03372 0.03607 0.03895 0.04261 0.04744 0.06473 62.26 –107.78 60.47 –100 58.19 –90 55.94 –80 53.73 –70 51.54 –60 49.39 –50 47.26 –40 45.17 –30 44.75 –27.99 44.14 –25 43.11 –20 42.09 –15 41.08 –10 40.08 –5 39.08 0 38.10 5 37.12 10 36.15 15 35.19 20 34.23 25 33.29 30 32.35 35 31.42 40 30.50 45 29.59 50 28.69 55 27.79 60 26.90 65 26.03 70 25.16 75 24.30 80 23.44 85 22.60 90 21.77 95 20.94 100 20.13 105 19.32 110 18.53 115 17.74 120 16.96 125 16.19 130 15.44 135 14.69 140 13.95 145 13.22 150 12.51 155 11.80 160 11.10 165 10.42 170 9.75 175 9.09 180 8.44 185 7.80 190 7.18 195 6.56 200 5.97 205 5.38 210 4.81 215 4.26 220 3.72 225 3.20 230 2.70 235 2.22 240 1.76 245 1.33 250 0.55 260 0.00 270.05 c Critical *Temperatures on ITS-90 scale a Triple b Normal boiling point point Pressure 30.36 2009 ASHRAE Handbook—Fundamentals Fig. 17 Pressure-Enthalpy Diagram for Refrigerant 718 (Water/Steam) Thermophysical Properties of Refrigerants Refrigerant 718 (Water/Steam) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F 32.02a 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 211.95b 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 705.10c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 0.089 0.122 0.178 0.256 0.363 0.507 0.699 0.951 1.277 1.695 2.226 2.893 3.723 4.747 6.000 7.520 9.350 11.538 14.136 14.696 17.201 20.795 24.986 29.844 35.447 41.878 49.222 57.574 67.029 77.691 89.667 103.07 118.02 134.63 153.03 173.36 195.74 220.33 247.26 276.68 308.76 343.64 381.48 422.46 466.75 514.52 565.95 621.23 680.55 744.11 812.10 884.74 962.24 1044.8 1132.7 1226.2 1325.5 1430.8 1542.5 1660.9 1786.2 1918.9 2059.3 2207.8 2364.9 2531.2 2707.3 2894.0 3093.0 3200.1 62.42 62.42 62.41 62.36 62.30 62.21 62.11 61.99 61.86 61.71 61.55 61.38 61.19 61.00 60.79 60.58 60.35 60.12 59.88 59.83 59.63 59.37 59.10 58.82 58.53 58.24 57.94 57.63 57.31 56.99 56.65 56.31 55.95 55.59 55.22 54.85 54.46 54.06 53.65 53.23 52.80 52.36 51.91 51.45 50.97 50.48 49.98 49.46 48.92 48.37 47.80 47.20 46.59 45.95 45.29 44.60 43.88 43.12 42.32 41.47 40.57 39.61 38.57 37.42 36.15 34.69 32.94 30.69 27.28 20.10 3299.7 2443.3 1702.8 1206.0 867.11 632.38 467.40 349.84 264.97 202.95 157.09 122.82 96.930 77.184 61.980 50.169 40.916 33.609 27.794 26.802 23.133 19.371 16.314 13.815 11.759 10.058 8.6431 7.4600 6.4658 5.6263 4.9142 4.3075 3.7884 3.3425 2.9580 2.6252 2.3361 2.0841 1.8638 1.6706 1.5006 1.3505 1.2177 1.0999 0.9951 0.9015 0.8179 0.7429 0.6756 0.6149 0.5601 0.5105 0.4655 0.4247 0.3874 0.3534 0.3223 0.2937 0.2674 0.2431 0.2206 0.1997 0.1802 0.1618 0.1444 0.1277 0.1113 0.0946 0.0748 0.0497 0.00 8.04 18.08 28.10 38.10 48.10 58.09 68.08 78.07 88.06 98.06 108.06 118.07 128.08 138.11 148.14 158.19 168.24 178.31 180.28 188.40 198.51 208.63 218.78 228.95 239.14 249.37 259.62 269.91 280.23 290.60 301.00 311.45 321.95 332.50 343.11 353.77 364.50 375.30 386.17 397.12 408.15 419.27 430.49 441.81 453.24 464.78 476.46 488.27 500.23 512.35 524.65 537.14 549.84 562.77 575.97 589.44 603.25 617.42 632.02 647.11 662.79 679.19 696.48 714.96 735.12 757.89 785.02 823.00 896.67 1075.92 1079.42 1083.79 1088.15 1092.50 1096.83 1101.15 1105.44 1109.71 1113.95 1118.17 1122.35 1126.49 1130.59 1134.65 1138.65 1142.60 1146.48 1150.30 1151.04 1154.05 1157.72 1161.31 1164.81 1168.21 1171.52 1174.71 1177.79 1180.75 1183.58 1186.28 1188.84 1191.25 1193.51 1195.61 1197.54 1199.29 1200.86 1202.24 1203.42 1204.38 1205.13 1205.64 1205.91 1205.93 1205.68 1205.13 1204.29 1203.13 1201.62 1199.75 1197.49 1194.80 1191.66 1188.02 1183.83 1179.04 1173.59 1167.39 1160.34 1152.31 1143.14 1132.60 1120.40 1106.08 1088.91 1067.56 1039.02 991.66 896.67 Entropy, Btu/lb·°F Liquid Vapor 0.0000 0.0162 0.0361 0.0556 0.0746 0.0933 0.1117 0.1297 0.1474 0.1648 0.1819 0.1987 0.2152 0.2315 0.2476 0.2634 0.2789 0.2943 0.3094 0.3124 0.3244 0.3391 0.3537 0.3680 0.3823 0.3963 0.4102 0.4239 0.4375 0.4510 0.4643 0.4775 0.4906 0.5036 0.5164 0.5292 0.5419 0.5545 0.5670 0.5795 0.5919 0.6042 0.6165 0.6287 0.6409 0.6531 0.6652 0.6774 0.6895 0.7017 0.7138 0.7260 0.7383 0.7506 0.7630 0.7755 0.7881 0.8009 0.8139 0.8271 0.8406 0.8545 0.8689 0.8839 0.8997 0.9169 0.9361 0.9589 0.9907 1.0533 Specific Heat cp , Btu/lb·°F Liquid Vapor cp /cv Vapor Vel. of Sound, ft/s Liquid Vapor 4601 4670 4748 4815 4874 4924 4967 5003 5033 5056 5075 5088 5097 5101 5101 5098 5090 5080 5066 5063 5049 5029 5007 4981 4953 4923 4890 4855 4817 4777 4735 4691 4644 4596 4546 4493 4438 4382 4323 4263 4200 4136 4069 4000 3930 3857 3782 3706 3626 3545 3461 3375 3286 3195 3101 3003 2903 2799 2691 2580 2463 2341 2213 2076 1928 1762 1574 1365 1119 0 1342 1352 1365 1378 1391 1403 1416 1428 1440 1452 1463 1475 1486 1497 1508 1518 1528 1538 1547 1549 1557 1565 1574 1582 1590 1597 1604 1611 1617 1623 1628 1633 1638 1642 1645 1648 1651 1653 1655 1656 1656 1656 1655 1654 1652 1650 1647 1643 1638 1632 1626 1619 1611 1601 1591 1580 1567 1553 1537 1520 1501 1480 1456 1430 1399 1363 1320 1263 1162 0 Viscosity, lbm /ft·h Liquid Vapor 4.333 3.738 3.159 2.712 2.359 2.074 1.841 1.648 1.486 1.348 1.230 1.128 1.040 0.962 0.894 0.834 0.780 0.732 0.690 0.682 0.651 0.616 0.585 0.556 0.530 0.506 0.484 0.464 0.445 0.428 0.412 0.397 0.383 0.370 0.358 0.347 0.337 0.327 0.318 0.309 0.300 0.292 0.285 0.278 0.271 0.264 0.258 0.252 0.246 0.240 0.235 0.229 0.224 0.219 0.214 0.209 0.204 0.199 0.194 0.189 0.183 0.178 0.173 0.167 0.161 0.154 0.146 0.136 0.122 — 0.0223 0.0226 0.0229 0.0232 0.0236 0.0240 0.0244 0.0248 0.0252 0.0256 0.0260 0.0265 0.0269 0.0273 0.0278 0.0282 0.0287 0.0291 0.0296 0.0297 0.0300 0.0305 0.0310 0.0314 0.0319 0.0324 0.0328 0.0333 0.0338 0.0342 0.0347 0.0351 0.0356 0.0361 0.0365 0.0370 0.0375 0.0379 0.0384 0.0389 0.0393 0.0398 0.0403 0.0407 0.0412 0.0417 0.0422 0.0427 0.0432 0.0438 0.0443 0.0449 0.0455 0.0461 0.0467 0.0474 0.0481 0.0489 0.0497 0.0506 0.0516 0.0527 0.0540 0.0555 0.0572 0.0594 0.0622 0.0663 0.0740 — Thermal Cond., Btu/h·ft·°F Liquid 0.3244 0.3293 0.3353 0.3413 0.3471 0.3527 0.3579 0.3628 0.3672 0.3713 0.3750 0.3783 0.3813 0.3839 0.3862 0.3881 0.3898 0.3912 0.3924 0.3926 0.3934 0.3941 0.3947 0.3951 0.3953 0.3953 0.3952 0.3949 0.3944 0.3939 0.3931 0.3923 0.3912 0.3901 0.3888 0.3873 0.3857 0.3839 0.3819 0.3798 0.3776 0.3751 0.3725 0.3696 0.3666 0.3633 0.3599 0.3562 0.3522 0.3481 0.3436 0.3389 0.3340 0.3288 0.3233 0.3177 0.3118 0.3057 0.2995 0.2931 0.2867 0.2801 0.2735 0.2668 0.2600 0.2531 0.2461 0.2404 0.2547 Vapor 0.00987 0.01001 0.01019 0.01038 0.01058 0.01079 0.01101 0.01124 0.01148 0.01172 0.01198 0.01225 0.01253 0.01282 0.01312 0.01343 0.01375 0.01409 0.01444 0.01451 0.01480 0.01517 0.01556 0.01596 0.01638 0.01680 0.01725 0.01770 0.01817 0.01866 0.01916 0.01967 0.02020 0.02074 0.02130 0.02187 0.02246 0.02307 0.02369 0.02433 0.02499 0.02568 0.02638 0.02711 0.02786 0.02865 0.02947 0.03033 0.03124 0.03220 0.03323 0.03434 0.03554 0.03685 0.03830 0.03992 0.04175 0.04385 0.04627 0.04912 0.05252 0.05664 0.06174 0.06819 0.07660 0.08808 0.10495 0.13393 0.21590 30.37 Surface Tension, Temp.,* dyne/cm °F 75.65 75.02 74.22 73.40 72.57 71.71 70.84 69.96 69.05 68.13 67.19 66.24 65.27 64.28 63.28 62.26 61.23 60.19 59.13 58.92 58.05 56.96 55.86 54.74 53.62 52.47 51.32 50.16 48.98 47.79 46.59 45.38 44.16 42.93 41.69 40.45 39.19 37.93 36.66 35.38 34.10 32.81 31.51 30.22 28.92 27.61 26.30 25.00 23.69 22.38 21.08 19.77 18.47 17.18 15.89 14.61 13.35 12.09 10.85 9.62 8.42 7.23 6.08 4.96 3.88 2.84 1.88 1.00 0.26 0.00 32.02 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 211.95 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 705.10 point 2.1882 1.0086 0.4504 1.3285 2.1604 1.0055 0.4514 1.3282 2.1271 1.0028 0.4528 1.3278 2.0954 1.0010 0.4543 1.3275 2.0653 0.9999 0.4558 1.3273 2.0366 0.9993 0.4574 1.3272 2.0093 0.9990 0.4591 1.3271 1.9832 0.9989 0.4609 1.3272 1.9583 0.9991 0.4628 1.3273 1.9346 0.9993 0.4648 1.3276 1.9118 0.9997 0.4671 1.3280 1.8901 1.0003 0.4696 1.3285 1.8693 1.0009 0.4723 1.3291 1.8493 1.0016 0.4753 1.3299 1.8302 1.0025 0.4787 1.3309 1.8118 1.0035 0.4824 1.3320 1.7942 1.0046 0.4865 1.3333 1.7772 1.0059 0.4911 1.3348 1.7609 1.0073 0.4961 1.3366 1.7578 1.0076 0.4971 1.3369 1.7451 1.0088 0.5016 1.3386 1.7299 1.0106 0.5077 1.3408 1.7153 1.0125 0.5145 1.3434 1.7011 1.0147 0.5218 1.3464 1.6874 1.0170 0.5299 1.3496 1.6741 1.0196 0.5387 1.3533 1.6612 1.0224 0.5483 1.3574 1.6487 1.0254 0.5586 1.3620 1.6365 1.0287 0.5698 1.3671 1.6246 1.0323 0.5818 1.3727 1.6131 1.0362 0.5947 1.3790 1.6018 1.0404 0.6085 1.3858 1.5908 1.0449 0.6231 1.3934 1.5800 1.0497 0.6386 1.4018 1.5694 1.0550 0.6551 1.4109 1.5591 1.0606 0.6725 1.4210 1.5489 1.0666 0.6910 1.4320 1.5388 1.0732 0.7105 1.4441 1.5290 1.0802 0.7311 1.4573 1.5192 1.0878 0.7529 1.4718 1.5096 1.0959 0.7761 1.4876 1.5000 1.1047 0.8007 1.5050 1.4906 1.1143 0.8268 1.5240 1.4811 1.1246 0.8547 1.5448 1.4718 1.1358 0.8846 1.5678 1.4625 1.1479 0.9167 1.5930 1.4531 1.1612 0.9513 1.6208 1.4438 1.1757 0.9888 1.6515 1.4344 1.1916 1.0295 1.6856 1.4250 1.2091 1.0741 1.7235 1.4155 1.2285 1.1231 1.7658 1.4059 1.2500 1.1772 1.8133 1.3962 1.2740 1.2374 1.8667 1.3863 1.3011 1.3048 1.9274 1.3762 1.3317 1.3810 1.9966 1.3658 1.3668 1.4677 2.0763 1.3552 1.4072 1.5675 2.1687 1.3443 1.4543 1.6838 2.2772 1.3329 1.5100 1.8210 2.4061 1.3210 1.5769 1.9855 2.5615 1.3085 1.6588 2.1869 2.7524 1.2953 1.7618 2.4392 2.9922 1.2812 1.8958 2.7654 3.3023 1.2659 2.0791 3.2045 3.7194 1.2491 2.3480 3.8305 4.3113 1.2301 2.7832 4.8020 5.2224 1.2078 3.5861 6.5383 6.8275 1.1798 5.3920 10.639 10.516 1.1361 15.579 32.942 29.223 1.0533 a Triple *Temperatures on ITS-90 scale point b Normal boiling point c Critical Pressure 30.38 2009 ASHRAE Handbook—Fundamentals Fig. 18 Pressure-Enthalpy Diagram for Refrigerant 744 (Carbon Dioxide) Thermophysical Properties of Refrigerants Refrigerant 744 (Carbon Dioxide) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –69.80a –65 –60 –55 –50 –48 –46 –44 –42 –40 –38 –36 –34 –32 –30 –28 –26 24 –22 –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 75 80 85 87.76c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 75.124 84.234 94.573 105.84 118.08 123.26 128.61 134.13 139.82 145.69 151.74 157.98 164.40 171.02 177.83 184.83 192.04 199.46 207.08 214.91 222.97 231.24 239.73 248.45 257.40 266.58 276.01 285.67 295.58 305.74 316.15 326.82 337.75 348.94 360.41 372.14 384.16 396.45 409.03 421.91 435.07 448.54 462.30 476.38 490.77 505.48 520.51 535.86 551.55 567.58 583.95 600.67 617.75 635.18 652.99 671.16 689.72 708.67 728.01 747.75 767.91 788.48 809.48 830.93 852.82 909.62 969.57 1033.07 1069.99 73.57 72.97 72.33 71.69 71.04 70.77 70.51 70.24 69.97 69.70 69.42 69.15 68.87 68.59 68.31 68.02 67.74 67.45 67.16 66.86 66.56 66.27 65.96 65.66 65.35 65.04 64.72 64.40 64.08 63.76 63.43 63.09 62.76 62.42 62.07 61.72 61.36 61.00 60.63 60.26 59.89 59.50 59.11 58.71 58.31 57.90 57.48 57.05 56.61 56.16 55.71 55.24 54.76 54.27 53.76 53.24 52.70 52.14 51.56 50.96 50.34 49.69 49.00 48.28 47.52 45.36 42.62 38.41 29.19 Entropy, Btu/lb·°F Liquid Vapor Specific Heat cp , Btu/lb·°F Liquid Vapor 0.4668 0.4684 0.4703 0.4724 0.4749 0.4760 0.4771 0.4783 0.4795 0.4808 0.4821 0.4836 0.4850 0.4866 0.4882 0.4899 0.4917 0.4935 0.4955 0.4975 0.4996 0.5018 0.5042 0.5066 0.5091 0.5118 0.5146 0.5175 0.5206 0.5238 0.5272 0.5307 0.5345 0.5384 0.5425 0.5469 0.5514 0.5563 0.5614 0.5669 0.5726 0.5787 0.5853 0.5922 0.5997 0.6076 0.6162 0.6254 0.6353 0.6460 0.6577 0.6704 0.6843 0.6996 0.7164 0.7352 0.7562 0.7798 0.8065 0.8370 0.8722 0.9131 0.9613 1.019 1.089 1.363 2.005 5.226 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 3202 3138 3073 3007 2941 2915 2889 2862 2836 2809 2783 2756 2730 2703 2677 2650 2623 2596 2569 2542 2515 2488 2461 2433 2405 2378 2350 2321 2293 2264 2235 2206 2176 2146 2116 2085 2054 2023 1991 1959 1926 1894 1861 1827 1794 1760 1726 1692 1657 1623 1588 1553 1518 1482 1447 1411 1375 1338 1302 1264 1227 1188 1148 1108 1066 951 816 636 0 730.9 731.9 732.7 733.2 733.5 733.5 733.5 733.5 733.4 733.3 733.1 732.9 732.6 732.3 732.0 731.6 731.1 730.6 730.1 729.5 728.9 728.2 727.5 726.7 725.9 725.0 724.1 723.1 722.1 721.0 719.8 718.6 717.4 716.1 714.7 713.2 711.8 710.2 708.6 706.9 705.2 703.4 701.6 699.7 697.7 695.7 693.6 691.4 689.1 686.8 684.4 681.9 679.3 676.7 673.9 671.0 668.1 665.0 661.8 658.4 654.9 651.3 647.4 643.4 639.0 626.5 609.5 576.6 0.0 0.621 0.593 0.565 0.539 0.514 0.505 0.496 0.486 0.477 0.469 0.460 0.452 0.443 0.435 0.427 0.420 0.412 0.405 0.397 0.390 0.383 0.376 0.369 0.363 0.356 0.350 0.343 0.337 0.331 0.325 0.319 0.313 0.307 0.302 0.296 0.291 0.286 0.280 0.275 0.270 0.265 0.260 0.255 0.250 0.245 0.240 0.236 0.231 0.227 0.222 0.217 0.213 0.209 0.204 0.200 0.195 0.191 0.187 0.182 0.178 0.173 0.169 0.165 0.160 0.155 0.143 0.129 0.111 — 0.0265 0.0268 0.0272 0.0276 0.0279 0.0281 0.0283 0.0284 0.0286 0.0287 0.0289 0.0290 0.0292 0.0293 0.0295 0.0297 0.0298 0.0300 0.0302 0.0303 0.0305 0.0307 0.0308 0.0310 0.0312 0.0314 0.0315 0.0317 0.0319 0.0321 0.0323 0.0325 0.0327 0.0329 0.0331 0.0333 0.0335 0.0338 0.0340 0.0342 0.0345 0.0347 0.0350 0.0352 0.0355 0.0358 0.0361 0.0364 0.0367 0.0370 0.0373 0.0377 0.0381 0.0384 0.0388 0.0393 0.0397 0.0402 0.0407 0.0413 0.0419 0.0425 0.0432 0.0440 0.0448 0.0474 0.0512 0.0582 — 30.39 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.1044 0.1024 0.1003 0.0982 0.0962 0.0954 0.0945 0.0937 0.0929 0.0921 0.0913 0.0905 0.0897 0.0889 0.0881 0.0873 0.0865 0.0857 0.0849 0.0841 0.0833 0.0825 0.0818 0.0810 0.0802 0.0794 0.0786 0.0778 0.0771 0.0763 0.0755 0.0747 0.0740 0.0732 0.0724 0.0716 0.0709 0.0701 0.0693 0.0685 0.0677 0.0670 0.0662 0.0654 0.0646 0.0638 0.0631 0.0623 0.0615 0.0607 0.0599 0.0591 0.0583 0.0575 0.0567 0.0559 0.0551 0.0543 0.0535 0.0527 0.0519 0.0511 0.0503 0.0495 0.0488 0.0472 0.0466 0.0510 0.00637 0.00650 0.00664 0.00678 0.00693 0.00699 0.00706 0.00712 0.00718 0.00725 0.00732 0.00739 0.00746 0.00753 0.00760 0.00768 0.00775 0.00783 0.00791 0.00799 0.00807 0.00816 0.00825 0.00834 0.00843 0.00853 0.00863 0.00873 0.00883 0.00894 0.00905 0.00916 0.00928 0.00941 0.00953 0.00967 0.00981 0.00995 0.01010 0.01026 0.01042 0.01059 0.01077 0.01096 0.01116 0.01137 0.01160 0.01183 0.01208 0.01235 0.01263 0.01294 0.01326 0.01362 0.01400 0.01441 0.01485 0.01534 0.01588 0.01647 0.01713 0.01786 0.01869 0.01963 0.02070 0.02430 0.03046 0.04701 17.16 16.49 15.81 15.12 14.45 14.18 13.91 13.65 13.38 13.12 12.86 12.60 12.34 12.08 11.82 11.56 11.31 11.06 10.80 10.55 10.30 10.05 9.81 9.56 9.32 9.07 8.83 8.59 8.35 8.11 7.88 7.64 7.41 7.18 6.95 6.72 6.50 6.27 6.05 5.83 5.61 5.39 5.17 4.96 4.75 4.54 4.33 4.13 3.92 3.72 3.53 3.33 3.14 2.94 2.76 2.57 2.39 2.21 2.03 1.86 1.69 1.52 1.36 1.20 1.05 0.69 0.36 0.10 0.00 –69.80 –65 –60 –55 –50 –48 –46 –44 –42 –40 –38 –36 –34 –32 –30 –28 –26 –24 –22 –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 75 80 85 87.76 point 1.1641 –14.140 136.598 –0.03449 0.35215 1.0434 –11.886 137.013 –0.02881 0.34847 0.9336 –9.532 137.417 –0.02294 0.34473 0.8375 –7.167 137.790 –0.01714 0.34107 0.7532 –4.791 138.130 –0.01138 0.33749 0.7224 –3.837 138.257 –0.00909 0.33608 0.6930 –2.881 138.379 –0.00681 0.33467 0.6651 –1.923 138.494 –0.00453 0.33328 0.6386 –0.963 138.604 –0.00226 0.33189 0.6132 0.000 138.708 0.00000 0.33052 0.5891 0.965 138.806 0.00226 0.32915 0.5661 1.933 138.898 0.00451 0.32779 0.5442 2.904 138.983 0.00675 0.32643 0.5233 3.877 139.062 0.00899 0.32509 0.5033 4.854 139.134 0.01123 0.32375 0.4842 5.833 139.199 0.01346 0.32241 0.4659 6.816 139.258 0.01568 0.32108 0.4485 7.802 139.309 0.01790 0.31975 0.4318 8.791 139.353 0.02012 0.31843 0.4158 9.784 139.389 0.02234 0.31711 0.4005 10.781 139.418 0.02455 0.31580 0.3859 11.781 139.438 0.02675 0.31448 0.3718 12.786 139.451 0.02896 0.31317 0.3584 13.794 139.455 0.03116 0.31186 0.3455 14.807 139.450 0.03336 0.31055 0.3331 15.824 139.437 0.03556 0.30924 0.3212 16.846 139.415 0.03776 0.30793 0.3098 17.873 139.383 0.03996 0.30662 0.2989 18.905 139.342 0.04216 0.30531 0.2884 19.942 139.291 0.04435 0.30399 0.2782 20.985 139.230 0.04655 0.30267 0.2685 22.033 139.158 0.04875 0.30135 0.2591 23.088 139.075 0.05095 0.30003 0.2501 24.148 138.981 0.05315 0.29869 0.2414 25.215 138.876 0.05535 0.29736 0.2331 26.289 138.758 0.05756 0.29601 0.2250 27.369 138.628 0.05977 0.29466 0.2173 28.457 138.485 0.06198 0.29329 0.2098 29.552 138.328 0.06420 0.29192 0.2025 30.656 138.158 0.06642 0.29054 0.1956 31.768 137.973 0.06865 0.28915 0.1888 32.889 137.772 0.07089 0.28774 0.1823 34.019 137.556 0.07313 0.28632 0.1760 35.159 137.323 0.07538 0.28488 0.1699 36.309 137.072 0.07764 0.28342 0.1640 37.470 136.803 0.07991 0.28195 0.1583 38.643 136.514 0.08220 0.28045 0.1528 39.828 136.206 0.08449 0.27893 0.1475 41.025 135.875 0.08680 0.27739 0.1423 42.237 135.522 0.08912 0.27582 0.1373 43.464 135.145 0.09147 0.27422 0.1324 44.706 134.741 0.09383 0.27259 0.1276 45.965 134.310 0.09621 0.27092 0.1230 47.242 133.850 0.09861 0.26921 0.1185 48.539 133.357 0.10104 0.26746 0.1141 49.858 132.830 0.10350 0.26566 0.1099 51.200 132.266 0.10599 0.26381 0.1057 52.568 131.661 0.10852 0.26190 0.1017 53.964 131.012 0.11109 0.25992 0.0977 55.392 130.313 0.11370 0.25787 0.0938 56.855 129.560 0.11637 0.25574 0.0900 58.358 128.745 0.11910 0.25351 0.0862 59.906 127.860 0.12190 0.25117 0.0825 61.505 126.896 0.12478 0.24871 0.0788 63.165 125.840 0.12776 0.24609 0.0697 67.656 122.671 0.13578 0.23867 0.0603 72.945 118.309 0.14515 0.22921 0.0493 80.262 111.006 0.15811 0.21455 0.0343 94.364 94.364 0.18355 0.18355 0.2172 1.4442 0.2212 1.4534 0.2257 1.4638 0.2304 1.4754 0.2355 1.4882 0.2377 1.4937 0.2399 1.4994 0.2422 1.5054 0.2445 1.5116 0.2470 1.5180 0.2495 1.5247 0.2520 1.5317 0.2547 1.5390 0.2574 1.5466 0.2603 1.5545 0.2632 1.5628 0.2662 1.5714 0.2694 1.5804 0.2726 1.5898 0.2760 1.5996 0.2795 1.6099 0.2831 1.6206 0.2869 1.6318 0.2908 1.6435 0.2949 1.6557 0.2991 1.6685 0.3035 1.6820 0.3082 1.6960 0.3130 1.7108 0.3180 1.7262 0.3233 1.7425 0.3288 1.7596 0.3346 1.7776 0.3406 1.7965 0.3470 1.8166 0.3537 1.8377 0.3607 1.8601 0.3681 1.8837 0.3759 1.9089 0.3841 1.9356 0.3928 1.9640 0.4021 1.9942 0.4120 2.0266 0.4225 2.0611 0.4337 2.0982 0.4457 2.1380 0.4586 2.1808 0.4725 2.2271 0.4875 2.2771 0.5038 2.3314 0.5215 2.3905 0.5408 2.4551 0.5620 2.5260 0.5854 2.6040 0.6113 2.6903 0.6402 2.7863 0.6725 2.8937 0.7091 3.0147 0.7507 3.1519 0.7984 3.3088 0.8538 3.4899 0.9188 3.7014 0.9962 3.9514 1.090 4.252 1.205 4.618 1.659 6.027 2.726 9.198 8.106 23.712 a Triple *Temperatures on ITS-90 scale point c Critical Pressure 30.40 2009 ASHRAE Handbook—Fundamentals Fig. 19 Pressure-Enthalpy Diagram for Refrigerant 50 (Methane) Thermophysical Properties of Refrigerants Refrigerant 50 (Methane) Properties of Saturated Liquid and Saturated Vapor Temp.,* °F –296.42a –290 –280 –270 –260 –250 –258.67b –245 –240 –235 –230 –225 –220 –215 –210 –205 –200 –195 –190 –185 –180 –175 –170 –165 –160 –155 –150 –140 –130 –120 –116.65c Enthalpy, Pres- Density, Volume, Btu/lb sure, lb/ft3 ft3/lb psia Liquid Vapor Liquid Vapor 1.696 2.635 4.891 8.466 13.822 21.476 14.696 26.341 31.996 38.517 45.984 54.475 64.073 74.859 86.918 100.33 115.19 131.58 149.59 169.30 190.81 214.22 239.62 267.11 296.80 328.79 363.20 439.83 527.92 629.39 667.06 28.18 63.884 27.89 42.619 27.41 24.167 26.93 14.619 26.43 25.92 26.37 25.66 25.39 25.12 24.84 24.56 24.27 23.97 23.67 23.36 23.04 22.71 22.37 22.01 21.64 21.26 20.86 20.44 19.99 19.52 19.01 17.84 16.34 13.83 10.15 9.3292 6.2231 8.8187 5.1555 4.3071 3.6261 3.0742 2.6230 2.2512 1.9423 1.6839 1.4662 1.2817 1.1243 0.9893 0.8728 0.7718 0.6836 0.6064 0.5383 0.4781 0.4243 Entropy, Btu/lb·°F Liquid Vapor Specific Heat cp , Btu/lb·°F Liquid Vapor 0.8049 0.5043 0.8081 0.5071 0.8144 0.5127 0.8219 0.5198 0.8307 0.5287 0.8409 0.5398 0.8320 0.5300 0.8467 0.5462 0.8529 0.5534 0.8598 0.5613 0.8672 0.5701 0.8754 0.5800 0.8845 0.5909 0.8945 0.6032 0.9057 0.6170 0.9181 0.6325 0.9322 0.6502 0.9480 0.6703 0.9661 0.6935 0.9868 0.7202 1.011 1.039 1.072 1.112 1.160 1.221 1.299 1.553 2.175 6.640 point 0.7515 0.7886 0.8329 0.8868 0.9538 1.039 1.151 1.523 2.478 9.528 Vel. of Sound, Viscosity, ft/s lbm /ft·h cp /cv Vapor Liquid Vapor Liquid Vapor 1.3410 1.3440 1.3505 1.3594 1.3712 1.3868 1.3731 1.3963 1.4070 1.4191 1.4329 1.4484 1.4660 1.4860 1.5087 1.5346 1.5643 1.5984 1.6378 1.6837 1.7375 1.8014 1.8780 1.9714 2.0871 2.2340 2.4258 3.0583 4.6351 15.490 5048 4941 4770 4594 4414 4231 4390 4137 4043 3948 3851 3753 3655 3554 3452 3349 3244 3137 3028 2917 2804 2688 2570 2448 2322 2193 2058 1768 1435 995 0 817.3 831.7 852.7 871.6 888.5 903.2 890.6 909.7 915.5 920.8 925.4 929.4 932.7 935.4 937.4 938.7 939.3 939.2 938.3 936.7 934.3 931.1 927.1 922.2 916.4 909.7 901.9 882.8 857.4 814.0 0.0 b Normal 30.41 Thermal Cond., Surface Btu/h·ft·°F Tension, Temp.,* Liquid Vapor dyne/cm °F 0.1221 0.00512 0.1197 0.00537 0.1156 0.00578 0.1113 0.00620 0.1069 0.00664 0.1024 0.00710 0.1063 0.00670 0.1001 0.00734 0.0979 0.00759 0.0956 0.00785 0.0933 0.00811 0.0910 0.00839 0.0887 0.00868 0.0864 0.00898 0.0841 0.00929 0.0818 0.00962 0.0795 0.00997 0.0773 0.01033 0.0750 0.01072 0.0727 0.01113 0.0704 0.01157 0.0681 0.01204 0.0658 0.01256 0.0635 0.01314 0.0612 0.01378 0.0589 0.01452 0.0565 0.01538 0.0517 0.01776 0.0469 0.02236 0.0456 0.04087 18.76 17.78 16.30 14.87 13.48 12.14 13.30 11.49 10.85 10.23 9.62 9.02 8.43 7.86 7.31 6.76 6.23 5.72 5.22 4.74 4.27 3.82 3.38 2.96 2.56 2.17 1.80 1.13 0.55 0.10 0.00 –296.42 –290 –280 –270 –260 –250 –258.67 –245 –240 –235 –230 –225 –220 –215 –210 –205 –200 –195 –190 –185 –180 –175 –170 –165 –160 –155 –150 –140 –130 –120 –116.65 point –30.898 203.250 –0.16968 1.26461 –25.716 206.228 –0.13858 1.22845 –17.593 210.749 –0.09216 1.17874 –9.396 215.095 –0.04789 1.13569 –1.111 219.231 –0.00551 1.09801 7.279 223.120 0.000 219.763 11.517 224.960 15.788 226.724 20.095 228.407 24.439 230.002 28.824 231.505 33.255 232.908 37.734 234.206 42.267 235.391 46.858 236.456 51.514 237.390 56.241 238.185 61.047 238.828 65.940 239.308 70.932 239.607 76.035 239.709 81.263 239.590 86.636 239.224 92.177 238.576 97.917 237.600 0.03522 1.06465 0.00000 1.09335 0.05503 1.04932 0.07451 1.03475 0.09368 1.02087 0.11256 1.00760 0.13117 0.99486 0.14955 0.98258 0.16770 0.97071 0.18566 0.95918 0.20345 0.94793 0.22109 0.93691 0.23862 0.92605 0.25605 0.91531 0.27343 0.90461 0.29078 0.89390 0.30815 0.88311 0.32557 0.87215 0.34312 0.86095 0.36085 0.84938 0.37885 0.83733 0.39725 0.82460 0.43590 0.79606 0.47950 0.75982 0.53971 0.69917 0.61244 0.61244 a Triple 0.495 0.0088 0.443 0.0091 0.379 0.0097 0.328 0.0102 0.287 0.0107 0.254 0.0113 0.282 0.0108 0.239 0.0116 0.226 0.0119 0.214 0.0121 0.202 0.0124 0.192 0.0127 0.182 0.0131 0.173 0.0134 0.164 0.0137 0.156 0.0140 0.149 0.0144 0.141 0.0147 0.135 0.0151 0.128 0.0155 0.122 0.0159 0.116 0.0163 0.110 0.0168 0.104 0.0173 0.099 0.0178 0.094 0.0183 0.088 0.0190 0.078 0.0205 0.067 0.0227 0.052 0.0272 — — boiling point 0.3761 103.898 236.236 0.2929 116.835 231.967 0.2216 131.950 224.363 0.1511 153.364 207.529 0.0985 178.791 178.791 *Temperatures on ITS-90 scale c Critical Refrigerant 50 (Methane) Properties of Gas at 14.696 psia (one standard atmosphere) Thermal Vel. of Specific Cond., Sound, Viscosity, Temp., Density, Enthalpy, Entropy, Heat cp , ft/s lbm /ft·h Btu/h·ft·°F °F lb/ft3 Btu/lb Btu/lb·°F Btu/lb·°F cp /cv –258.7a 0.1134 –250 –240 –230 –220 –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 20 40 60 80 100 0.1082 0.1028 0.0980 0.0936 0.0860 0.0796 0.0741 0.0694 0.0652 0.0615 0.0582 0.0552 0.0526 0.0501 0.0479 0.0459 0.0441 0.0424 0.0408 0.0393 219.76 224.33 229.54 234.70 239.83 250.02 260.14 270.23 280.30 290.36 300.42 310.50 320.60 330.74 340.93 351.18 361.51 371.93 382.45 393.07 403.82 1.0933 1.1156 1.1398 1.1628 1.1847 1.2255 1.2631 1.2979 1.3305 1.3610 1.3898 1.4170 1.4430 1.4677 1.4914 1.5142 1.5362 1.5575 1.5781 1.5982 1.6178 0.5300 0.5235 0.5183 0.5145 0.5116 0.5077 0.5052 0.5038 0.5030 0.5029 0.5034 0.5044 0.5060 0.5082 0.5110 0.5145 0.5185 0.5232 0.5285 0.5343 0.5406 1.373 1.368 1.363 1.359 1.356 890.6 912.4 936.5 959.7 982.2 0.0108 0.0112 0.0118 0.0123 0.0128 0.0138 0.0149 0.0159 0.0169 0.0179 0.0189 0.0199 0.0208 0.0218 0.0227 0.0236 0.0245 0.0254 0.0263 0.0272 0.0280 0.00670 0.00700 0.00737 0.00774 0.00811 0.00887 0.00963 0.01039 0.01116 0.01193 0.01267 0.01343 0.01419 0.01497 0.01576 0.01656 0.01738 0.01822 0.01908 0.01996 0.02087 Thermal Vel. of Specific Temp., Density, Enthalpy, Entropy, Heat cp , Cond., Sound, Viscosity, °F lb/ft3 Btu/lb Btu/lb·°F Btu/lb·°F cp /cv ft/s lbm /ft·h Btu/h·ft·°F 120.0 0.0379 140.0 0.0367 160.0 0.0355 180.0 0.0344 200.0 0.0333 220.0 0.0323 240.0 0.0314 260.0 0.0305 280.0 0.0297 300.0 0.0289 320.0 0.0282 340.0 0.0275 360.0 0.0268 380.0 0.0262 400.0 0.0256 420.0 0.0250 440.0 0.0244 460.0 0.0239 480.0 0.0234 500.0 0.0229 414.70 425.72 436.89 448.22 459.71 471.37 483.21 495.23 507.43 519.82 532.40 545.18 558.15 571.32 584.68 598.24 612.00 625.97 640.13 654.49 1.6369 1.6556 1.6739 1.6919 1.7096 1.7270 1.7441 1.7611 1.7778 1.7943 1.8107 1.8269 1.8429 1.8587 1.8745 1.8901 1.9055 1.9209 1.9361 1.9512 0.5474 0.5547 0.5624 0.5704 0.5788 0.5875 0.5964 0.6055 0.6148 0.6243 0.6339 0.6436 0.6534 0.6633 0.6732 0.6831 0.6931 0.7031 0.7130 0.7230 1.295 1523.5 1.290 1546.7 1.285 1569.3 1.280 1591.3 1.274 1612.8 1.269 1633.9 1.264 1654.5 1.259 1674.7 1.254 1694.6 1.249 1714.1 1.244 1733.3 1.239 1752.2 1.235 1770.9 1.231 1789.3 1.226 1807.4 1.222 1825.4 1.218 1843.1 1.215 1860.6 1.211 1877.9 1.207 1895.1 0.0289 0.0297 0.0306 0.0314 0.0322 0.0330 0.0337 0.0345 0.0353 0.0360 0.0368 0.0375 0.0382 0.0389 0.0397 0.0404 0.0411 0.0417 0.0424 0.0431 0.02180 0.02275 0.02373 0.02473 0.02576 0.02680 0.02787 0.02896 0.03008 0.03121 0.03236 0.03353 0.03472 0.03592 0.03714 0.03837 0.03962 0.04088 0.04216 0.04345 1.351 1025.2 1.347 1066.1 1.345 1105.2 1.342 1142.6 1.340 1178.6 1.338 1213.2 1.335 1246.6 1.333 1278.8 1.330 1309.8 1.326 1339.8 1.323 1368.7 1.319 1396.6 1.315 1423.6 1.310 1449.8 1.305 1475.1 1.300 1499.7 a Saturated vapor at normal boiling point Next Page Pressure 30.42 2009 ASHRAE Handbook—Fundamentals Fig. 20 Pressure-Enthalpy Diagram for Refrigerant 170 (Ethane) ...
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