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Chapter102_A

# Chapter102_A - Problems 10.25 to 10.34 have been solved...

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Problems 10.25 to 10.34 have been solved using MS-EXCEL 2000 We give the resulting spreadsheets. Problem 10.25 a) BUBL P T=-60 F (-51.11 C) P=200 psia P=250 psia P=215 psia (14.824 bar) ANSWER Component xi Ki yi=Ki*xi Ki yi=Ki*xi Ki yi=Ki*xi methane 0.100 5.600 0.560 4.600 0.460 5.150 0.515 ethylene 0.500 0.700 0.350 0.575 0.288 0.650 0.325 ethane 0.400 0.445 0.178 0.380 0.152 0.420 0.168 SUM = 1.088 SUM = 0.900 SUM = 1.008 close enough b) DEW P T=-60 F (-51.11 C) P=190 psia P=200 psia (13.79 bar) ANSWER Component yi Ki xi=yi/Ki Ki xi=yi/Ki methane 0.500 5.900 0.085 5.600 0.089 ethylene 0.250 0.730 0.342 0.700 0.357 ethane 0.250 0.460 0.543 0.445 0.562 SUM = 0.971 SUM = 1.008 close enough c) BUBL T P=250 psia (17.24 bar) T=-50 F T=-60 F T=-57 F (-49.44 C) ANSWER Component xi Ki yi=Ki*xi Ki yi=Ki*xi Ki yi=Ki*xi methane 0.120 4.900 0.588 4.600 0.552 4.700 0.564 ethylene 0.400 0.680 0.272 0.570 0.228 0.615 0.246 ethane 0.480 0.450 0.216 0.380 0.182 0.405 0.194 SUM = 1.076 SUM = 0.962 SUM = 1.004 close enough d) DEW T P=250 psia (17.24 bar) T=-40 F T = -50 F T = -45 F (-27.33 C) ANSWER Component yi Ki xi=yi/Ki Ki xi=yi/Ki Ki xi=yi/Ki methane 0.430 5.200 0.083 4.900 0.088 5.050 0.085 ethylene 0.360 0.800 0.450 0.680 0.529 0.740 0.486 ethane 0.210 0.520 0.404 0.450 0.467 0.485 0.433 SUM = 0.937 SUM = 1.084 SUM = 1.005 close enough 327

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Problem 10.26 a) BUBL P T=60 C (140 F) P=200 psia P=50 psia P=80 psia (5.516 bar) ANSWER Component xi Ki yi=Ki*xi Ki yi=Ki*xi Ki yi=Ki*xi ethane 0.10 2.015 0.202 6.800 0.680 4.950 0.495 propane 0.20 0.620 0.124 2.050 0.410 1.475 0.295
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Chapter102_A - Problems 10.25 to 10.34 have been solved...

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