54143 Measures shall be provided so that the flow of air will not stop even in

54143 measures shall be provided so that the flow of

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5.4.1.4.3 Measures shall be provided so that the flow of air will not stop even in the case of replacement or cleaning of the filter elements. 5.4.1.5 Performance characteristics The following characteristics shall be guaranteed: 5.4.1.5.1 Inlet/outlet air flow rate. 5.4.1.5.2 Dew point of outlet air. 5.4.1.5.3 Drying and regeneration cycle time. 5.4.1.5.4 Pressure drop through the dryer including air filters. 6. PACKAGED UNITS Whenever use of packaged units are to be made, API Standards 672 and 680, shall be considered for centrifugal and reciprocating compressors.
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Nov. 1993 IPS-E-PR- 330 17 APPENDICES APPENDIX A 1. MOISTURE CONTENT OF THE AIR 1.1 General 1.1.1 All air contains moisture, the amount being influenced by pressure,temperature and proximity to oceans, lakes and rivers. 1.1.2 Condensed water vapor can have corrosive effects on metals and wash out protective lubricants from tools and other pneumatic devices. To protect against such undesirable effects in a compressed air system, the use of various types of air drying systems has become increasingly popular. 1.1.3 Relative Humidity and dew point are two methods of indicating the amount, of moisture in the air. 1.2 Effect of Pressure & Temperature on Relative Humidity 1.2.1 Table A.1 lists the water content of air in milliliters per one cubic meter at various temperatures and relative humidities. 1.2.2 Pressure has a major effect on the vapor content in air. The capacity of air at a given temperature to hold moisture in vapor form decreases as the pressure increases. Table A.2 lists the water content of saturated air (relative humidity 100 per cent) at given temperatures and pressures.
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Nov. 1993 IPS-E-PR- 330 18 TABLE A . 1 WATER CONTENT OF AIR IN MILLILITERS PER ONE CUBIC METER AT ATMOSPHERIC PRESSURE RH % TEMPERATURE °C 2 5 10 15 20 25 30 35 40 45 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 .26 .53 .79 1.07 1.34 1.60 1.87 2.11 2.41 2.67 2.94 3.21 3.48 3.75 4.02 4.28 4.56 4.83 4.93 5.37 .33 .66 0.99 1.33 1.67 2.00 2.33 2.67 3.00 3.34 3.67 4.01 4.35 4.69 5.02 5.36 5.70 6.04 6.37 6.71 .47 .92 1.39 1.86 2.33 2.80 3.26 3.73 4.20 4.67 5.13 5.60 6.07 6.55 7.02 7.48 7.97 8.47 8.90 9.38 .65 1.30 1.95 2.60 3.26 3.91 4.56 5.22 5.89 6.54 7.20 7.86 8.52 9.19 9.85 10.52 11.19 11.86 12.52 13.20 0.89 1.79 2.68 3.57 4.48 5.38 6.28 7.19 8.11 9.01 9.93 10.84 11.75 12.67 13.60 14.52 15.45 16.38 17.31 18.24 1.21 2.43 3.65 4.87 6.10 7.34 8.57 9.81 11.06 12.31 13.56 14.82 16.08 17.35 18.62 19.89 21.17 22.46 23.74 25.03 1.62 3.25 4.90 6.55 8.21 9.86 11.54 13.21 14.90 16.59 18.30 20.00 21.71 23.43 25.16 26.90 28.64 30.41 32.16 33.93 2.16 4.32 6.52 8.71 10.92 13.14 15.37 17.62 19.88 22.16 24.44 26.75 29.06 31.39 33.74 36.10 38.46 40.86 43.25 45.67 2.84 5.68 8.56 11.46 14.38 17.32 20.29 23.27 26.29 29.32 32.38 35.47 38.58 41.71 44.87 48.05 51.26 54.50 58.03 61.04 3.67 7.37 11.11 14.90 18.71 22.57 26.47 30.41 34.39 38.40 42.46 46.55 50.69 54.88 59.11 63.38 67.71 72.07 76.49 80.94 TABLE A . 2 WATER CONTENT OF SATURATED AIR IN MILLILITERS PER ONE STANDARD CUBIC METER kPa(ga) TEMPERATURE °C 2 5 10 15 20 25 30 35 40 45 0 68.9 137.9 206.8 275.8 344.7 413.7 482.6 551.6 620.5 689.5 758.4 827.4 896.3 965.3 1034.2 1103.2 1172.1 1241. 1310 1379 5.37 3.18 2.25 1.75 1.43 1.22 1.05 0.93 0.82 0.75 0.68 0.62 0.58 0.54 0.50 0.48 0.45 0.42 0.40 0.38 0.37 6.71 3.97 2.81 2.18 1.79 1.51 1.30 1.14 1.04 0.93 0.85 0.78 0.72 0.67 0.63 0.59 0.55 0.53 0.50 0.47 0.45 9.38 5.56 3.94 3.06 2.50 2.11 1.83 1.61 1.44 1.31 1.19 1.09 1.02 0.95 0.88 0.83 0.77 0.73 0.69 0.67 0.64 13.20 7.79 5.53 4.29 3.49 2.95 2.56 2.25 2.01 1.82 1.66 1.52 1.41 1.32 1.23 1.16 1.09 1.04 0.97 0.93 0.87 18.24 10.74 7.61 5.90 4.82 4.06 3.52 3.09 2.77 2.50 2.29 2.10 1.95 1.81 1.69 1.58 1.50 1.42 1.34 1.28 1.21 25.03 14.69 10.40 8.05 6.56 5.53 4.79 4.22 3.77 3.42 3.11 2.87 2.64 2.46 2.30 2.16 2.04 1.93 1.83 1.73 1.66 33.93 19.83 14.00 10.83 8.82 7.44 6.43 5.67 5.06 4.58 4.18 3.85 3.55 4.22 3.09 2.90 2.74 2.59 2.45 2.33 2.22 45.67 26.52 18.68 14.43 11.75 9.90 8.56 7.54 6.73 6.09 5.55 5.10 4.72 4.39 4.11 3.86 3.63 3.43 3.26 3.10 2.95 61.04 35.16 24.69 19.02 15.47 13.04 11.26 9.92 8.86 9.00 7.29 6.70 6.21 5.77 5.40 5.07 4.77 4.51 4.28 4.07 3.87 80.94 46.15 32.27 24.81 20.15 16.97 14.65 12.90 11.51 10.39 9.47 8.71 8.05 7.48 7.00 6.57 6.19 5.85 5.55 5.28 5.03 1.2.3 Temperature itself has a significant effect on the ability of air at a given pressure to hold moisture. The higher the air temperature is, the greater its capacity to hold water vapor. Conversely,
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