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1. Moist air has a dry bulb temperature of 110 F and a wet bulb temperature of 87 F. The air is at a total pressure of 50 psia. Calculate the following. The humidity ratio, W [lbm H20 Vapor/lbm Dry Air] b. The relative humidity, [percent] The dew point temperature The specific volume [ft'/lbm Dry Air] The density of the water vapor [lbm H20 Vapor/ft'I a. с. d. e. Universal gas constant, R 1545 [ft-lbf/lbmol-R] Molecular weight dry air 28.965 Molecular weight water 18.015 %3D

1. Moist air has a dry bulb temperature of 110 F and a wet bulb temperature of 87 F. The air is at a total pressure of 50 psia. Calculate the following. The humidity ratio, W [lbm H20 Vapor/lbm Dry Air] b. The relative humidity, [percent] The dew point temperature The specific volume [ft'/lbm Dry Air] The density of the water vapor [lbm H20 Vapor/ft'I a. с. d. e. Universal gas constant, R 1545 [ft-lbf/lbmol-R] Molecular weight dry air 28.965 Molecular weight water 18.015 %3D

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
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1. Moist air has a dry bulb temperature of 110 F and a wet bulb temperature of 87 F. The air is at a total pressure of 50 psia. Calculate the following. The humidity ratio, W [lbm H,O Vapor/lbm Dry Air] The relative humidity, [percent] The dew point temperature The specific volume [ft'/bm Dry Air] The density of the water vapor [lbm H20 Vapor/ft'I a. b. с. d. e. Universal gas constant, R 1545 [ft-lbf/lbmol-R] Molecular weight dry air 28.965 Molecular weight water 18.015
Transcribed Image Text:1. Moist air has a dry bulb temperature of 110 F and a wet bulb temperature of 87 F. The air is at a total pressure of 50 psia. Calculate the following. The humidity ratio, W [lbm H,O Vapor/lbm Dry Air] The relative humidity, [percent] The dew point temperature The specific volume [ft'/bm Dry Air] The density of the water vapor [lbm H20 Vapor/ft'I a. b. с. d. e. Universal gas constant, R 1545 [ft-lbf/lbmol-R] Molecular weight dry air 28.965 Molecular weight water 18.015
Table 3 Thermodynamie Properties of Water at Saturation (Consinued Specific Volume f Sal. Enthaloy, Bi/b Entroos, R-"F Temp. t. "F Abselate Pressere Sat, Vaper Sat. Sat. Sat. Liuld Liguid Sat Ena Vapor Tenp Evag Liquid Evap. Vapor pai in. Hg 53 54 35 56 57 0.19900 0.20643 011410 0.22202 0.23020 0.23864 0.24735 0.25615 0.26562 0.27519 0.28506 0.29524 0.30574 0.31656 0.12772 0.33921 0.35107 0.40116 0.42029 0.4391 0.45204 0.46869 0.48S8S 0.5062 0.52192 0.54081 0.36029 0.0160 1533.22 0.0160 148O.19 0.01603 1430.51 0.01603 1382.19 0.01601 1335.65 0.01603 1290.85 0,01601 1247.76 0.01604 1205.J0 0.01604 1166.38 0.01604 1127.93 0.01604 1090.94 0.01604 1055.32 0.01604 1020.98 0.01604 1333 24 1480.91 1430.62 1382.21 1335.67 1290.87 1247.18 1206.32 1166.40 1127.95 1090.95 21 07 1061.27 1084.34 22.07 1062.71 1084.77 23.07 1052.14 1ORS.21 24.07 1061.58 1085.45 25.07 1051.01 1086.08 26.07 1060.45 1036.52 27.07 1059.19 106.96 21.07 1039.32 1087.39 29.07 1058.76 1087.13 30.07 105E.19 208.27 31.97 1057.6) 10.70 32.07 1057.07 1O19.14 03I 10136 2.0E 33.07 1056.50 1089.57 34.07 1055.94 1090.01 35.07 L055.37 1090.44 36.07 1054.SI 1090. 37.01 1054.24 1091.31 31.07 1053.68 1OP1.15 39.07 1053.l 1092.18 40.07 1052.35 1092.61 41.07 1051.98 1093.05 2.06 1051.42 1093.48 43.06 10so.85 1093.92 44.06 1050.29 1094.33 45.06 1049.72 1094,78 46.0 1049.1s 1095.22 1.06 1049 1095.55 00420 2.0740 2119 0.0439 2.06 ZIIS OAS9 20637 2.1056 C.0478 2.056 2.1064 0.0497 20536 2.1033 33 54 15 19 60 61 62 61 64 65 66 67 68 69 0.0036 20435 2.0971 0.0s55 2.038S 2.0540 0.0573 20334 2.009 0.0594 2.029S 2.078 0.0613 2.021s 20648 19 60 62 0.60112 0.62249 0.64452 0.56724 0.69065 0.11478 1021.00 987.97 916.12 925.45 895.87 4.0651 2.0136 2.0T 0.060 2.007 2.0158 0.06 2.0039 20a 0.070 1.9990 2.06 00727 1.994E 2.0664 63 66 67 987.95 0.01605 956.11 0.0160S 925.44 0.01605 895.86 70 71 72 0.36325 0.37586 0.38S2 0.40217 0.41992 0,43008 0.4446S 0.45966 0.47510 0.49100 0,73964 0.76525 0.79164 0.0160 167.34 367.16 839.8 li3.39 T87.87 763.21 739.44 726.53 794.40 673.06 652.46 0.0746 1.993 20639 0.0765 1.9845 1.0610 0.073 19797 2.0s80 0.C02 t.9749 2052 0.021 1.91C2 2.0523 0.040 1.9654 204 20 0.01605 839.87 0.01606 13.37 0.01606 157.85 C.01606 763.19 001606 0.01606 0.01607 0.01607 0.01607 73 T4 75 76 77 78 79 0.84682 0.87564 0.90532 0.9387 0.96712 0.99968 739.42 716.51 694.38 673.05 652.44 0.O 1.9560 2037 0.O6 1.9513 2OAOS 0.0914 19456 200 0.50736 0.52419 0.54150 0.53931 0.57763 0.99647 1.01298 1.06725 1.10250 1.13877 L17606 1.21442 612. 54 613.35 594.82 S76.90 539.63 632.16 613.37 594.84 576.91 139.65 542.94 126.81 4.06 1048.03 1096.08 49.06 1047.46 1096.51 30.05 1046. 19g 1096.95 51.05 1046 33 1097.38 52.05 1045.15 1091.1 33.05 1043.19 1098.24 54.05 1044.63 1098.67 35.05 1044.06 1099.11 56.05 1043.49 1099.54 37.04 1042.92 1099.97 0.093 1.9420 2essa 0.091 19113 20124 0.00 1.9317 2.097 0.098 1.921 2.029 0.1006 1.9215 202 0.1025 1.319 214 0.1043 1.9144 2017 0.1061 1.9098 2.0160 81 82 83 84 0.01608 0.016CA 0.01608 0.01608 0.01609 0.01609 0.01609 0.0169 0.01610 542.93 $26.10 16 0.61384 0.63375 0.65622 0.67726 1.2440 1.3608 1.37892 17 496.14 481.60 18 496.15 41.61 0.1080 1.9053 2.0133 0.109E 1.900 2.0105 19 58.04 1042.36 n00.40. 01116 L1963 2.009 59.04 1041.79 1100.83 0.04 1041.1z 1101.26 61.04 1040.65 1101.69 62.04 1040.OE 1102.12 63.03 1039.51 1102.55 64.03 1038.9s 1102.98 3.03 1038.SE 1103.41 66.03 1037.SI 1101.4 57.05 L037 24 1104.25 90 90 91 92 93 94 95 0.4929 0.12111 0.74194 G.76740 0.79150 0.1615 467.53 453.93 440.7 428.06 415.76 403.36 192.34 381.21 370,44 360.01 1.42295 146820 131468 1 56244 0.01610 0.01611 0.01611 0.01611 0.01612 0,01612 0.01612 467.52 0.01610 453.91 440.76 422.04 415.74 405.4 392.13 31.20 370.42 359.99 a14 LBI 2003 a112 14 2.006 a10 1H29 2.0000 0.11 17S L9 a1206 L41 1.9947 0.1224 1.7 1.9921 C.1242 1.8653 1.9895 0.1260 1.861O 170 0.127 1.8566 1.984 1.6619 95 97 95 99 0.15456 0.91207 L76678 1.82134 99 C.01613 0.12 1.8523 19I 0.1314 1.5479 1.9793 0.1332 146 1976 0.1349 193 1974 100 349.92 340.15 330,71 32135 312.69 304.10 295.77 287.73 279.92 272.36 .03 1036.67 1104.49 9.03 1036.1O 110s.12 70.02 1035.5 10535 71.02 1034.9S 1105.98 72.02 1034.38 1106.40 71.02 1013.81 1106.3 14.02 1033.24 1107.26 15.01 1032.67 IB07.68 15.01 101210 11OR.11 77.01 103132 1108.54 78.01 1030.95 1108.96 79.01 1030.38 1109.39 30.01 1029.80 1109I 1.01 1029 23 I0.24 2.00 1028.66 1110.60 3.00 1028.08 LII.09 54.00 1027.SI II.SI E5.00 1026.93 1111.93 56.00 1026.36 1112.3s 87.00 1025.7 1117 7 8.00 1025 30 1113 20 100 0.9031 0.97910 1.00904 1.096 0.01613 0.0161) 0.01614 0.01614 1.9345 1.99187 2.05443 2.11667 2.18034 2.14575 231285 2,38168 241225 2.12464 349.91 340.14 J30.69 221.13 312.47 304.01 291.76 287.1 279.91 272.34 102 103 104 105 106 107 108 109 104 105 106 107 L11997 L1677 1.204 12999 0.01615 0.01615 0.01616 0.01616 0.01616 138S 1.0E 1. a14 L.26 L44 a1420 11223 L64) G.143 L I L9619 2.1455 1.139 1.994 109 a.1473 18097 19570 0.1490 1.05 19546 0.1S0 1.8014 1.921 0.125 17912 1.981 0.1543 1.793I 1.54 110 110 1.27644 263.03 257.9) 251.04 244.38 237.90 0.01617 253.02 267494 2.75293 2.11258 2.91481 2.99878 0.01617 257.91 231.02 0.01617 244.16 0.0161E 0.01618 237.89 0.01619 231.42 0.01S19 225.13 0.01619 219.63 112 113 114 1.39138 143162 112 113 114 115 0.1377 LT9 1.25 G.195 LTOS L 0.1612 1.67 L3 G.1629 1.1726 1.9356 a.1647 1.7686 1.9332 116 17 125.15 119.65 113.93 200.37 202.99 1.542 3.17296 1.26327 0.01420 213.91 19 120 t.64820 3.01620 0.01620 208.36 202.9 3.41052 120
Transcribed Image Text:Table 3 Thermodynamie Properties of Water at Saturation (Consinued Specific Volume f Sal. Enthaloy, Bi/b Entroos, R-"F Temp. t. "F Abselate Pressere Sat, Vaper Sat. Sat. Sat. Liuld Liguid Sat Ena Vapor Tenp Evag Liquid Evap. Vapor pai in. Hg 53 54 35 56 57 0.19900 0.20643 011410 0.22202 0.23020 0.23864 0.24735 0.25615 0.26562 0.27519 0.28506 0.29524 0.30574 0.31656 0.12772 0.33921 0.35107 0.40116 0.42029 0.4391 0.45204 0.46869 0.48S8S 0.5062 0.52192 0.54081 0.36029 0.0160 1533.22 0.0160 148O.19 0.01603 1430.51 0.01603 1382.19 0.01601 1335.65 0.01603 1290.85 0,01601 1247.76 0.01604 1205.J0 0.01604 1166.38 0.01604 1127.93 0.01604 1090.94 0.01604 1055.32 0.01604 1020.98 0.01604 1333 24 1480.91 1430.62 1382.21 1335.67 1290.87 1247.18 1206.32 1166.40 1127.95 1090.95 21 07 1061.27 1084.34 22.07 1062.71 1084.77 23.07 1052.14 1ORS.21 24.07 1061.58 1085.45 25.07 1051.01 1086.08 26.07 1060.45 1036.52 27.07 1059.19 106.96 21.07 1039.32 1087.39 29.07 1058.76 1087.13 30.07 105E.19 208.27 31.97 1057.6) 10.70 32.07 1057.07 1O19.14 03I 10136 2.0E 33.07 1056.50 1089.57 34.07 1055.94 1090.01 35.07 L055.37 1090.44 36.07 1054.SI 1090. 37.01 1054.24 1091.31 31.07 1053.68 1OP1.15 39.07 1053.l 1092.18 40.07 1052.35 1092.61 41.07 1051.98 1093.05 2.06 1051.42 1093.48 43.06 10so.85 1093.92 44.06 1050.29 1094.33 45.06 1049.72 1094,78 46.0 1049.1s 1095.22 1.06 1049 1095.55 00420 2.0740 2119 0.0439 2.06 ZIIS OAS9 20637 2.1056 C.0478 2.056 2.1064 0.0497 20536 2.1033 33 54 15 19 60 61 62 61 64 65 66 67 68 69 0.0036 20435 2.0971 0.0s55 2.038S 2.0540 0.0573 20334 2.009 0.0594 2.029S 2.078 0.0613 2.021s 20648 19 60 62 0.60112 0.62249 0.64452 0.56724 0.69065 0.11478 1021.00 987.97 916.12 925.45 895.87 4.0651 2.0136 2.0T 0.060 2.007 2.0158 0.06 2.0039 20a 0.070 1.9990 2.06 00727 1.994E 2.0664 63 66 67 987.95 0.01605 956.11 0.0160S 925.44 0.01605 895.86 70 71 72 0.36325 0.37586 0.38S2 0.40217 0.41992 0,43008 0.4446S 0.45966 0.47510 0.49100 0,73964 0.76525 0.79164 0.0160 167.34 367.16 839.8 li3.39 T87.87 763.21 739.44 726.53 794.40 673.06 652.46 0.0746 1.993 20639 0.0765 1.9845 1.0610 0.073 19797 2.0s80 0.C02 t.9749 2052 0.021 1.91C2 2.0523 0.040 1.9654 204 20 0.01605 839.87 0.01606 13.37 0.01606 157.85 C.01606 763.19 001606 0.01606 0.01607 0.01607 0.01607 73 T4 75 76 77 78 79 0.84682 0.87564 0.90532 0.9387 0.96712 0.99968 739.42 716.51 694.38 673.05 652.44 0.O 1.9560 2037 0.O6 1.9513 2OAOS 0.0914 19456 200 0.50736 0.52419 0.54150 0.53931 0.57763 0.99647 1.01298 1.06725 1.10250 1.13877 L17606 1.21442 612. 54 613.35 594.82 S76.90 539.63 632.16 613.37 594.84 576.91 139.65 542.94 126.81 4.06 1048.03 1096.08 49.06 1047.46 1096.51 30.05 1046. 19g 1096.95 51.05 1046 33 1097.38 52.05 1045.15 1091.1 33.05 1043.19 1098.24 54.05 1044.63 1098.67 35.05 1044.06 1099.11 56.05 1043.49 1099.54 37.04 1042.92 1099.97 0.093 1.9420 2essa 0.091 19113 20124 0.00 1.9317 2.097 0.098 1.921 2.029 0.1006 1.9215 202 0.1025 1.319 214 0.1043 1.9144 2017 0.1061 1.9098 2.0160 81 82 83 84 0.01608 0.016CA 0.01608 0.01608 0.01609 0.01609 0.01609 0.0169 0.01610 542.93 $26.10 16 0.61384 0.63375 0.65622 0.67726 1.2440 1.3608 1.37892 17 496.14 481.60 18 496.15 41.61 0.1080 1.9053 2.0133 0.109E 1.900 2.0105 19 58.04 1042.36 n00.40. 01116 L1963 2.009 59.04 1041.79 1100.83 0.04 1041.1z 1101.26 61.04 1040.65 1101.69 62.04 1040.OE 1102.12 63.03 1039.51 1102.55 64.03 1038.9s 1102.98 3.03 1038.SE 1103.41 66.03 1037.SI 1101.4 57.05 L037 24 1104.25 90 90 91 92 93 94 95 0.4929 0.12111 0.74194 G.76740 0.79150 0.1615 467.53 453.93 440.7 428.06 415.76 403.36 192.34 381.21 370,44 360.01 1.42295 146820 131468 1 56244 0.01610 0.01611 0.01611 0.01611 0.01612 0,01612 0.01612 467.52 0.01610 453.91 440.76 422.04 415.74 405.4 392.13 31.20 370.42 359.99 a14 LBI 2003 a112 14 2.006 a10 1H29 2.0000 0.11 17S L9 a1206 L41 1.9947 0.1224 1.7 1.9921 C.1242 1.8653 1.9895 0.1260 1.861O 170 0.127 1.8566 1.984 1.6619 95 97 95 99 0.15456 0.91207 L76678 1.82134 99 C.01613 0.12 1.8523 19I 0.1314 1.5479 1.9793 0.1332 146 1976 0.1349 193 1974 100 349.92 340.15 330,71 32135 312.69 304.10 295.77 287.73 279.92 272.36 .03 1036.67 1104.49 9.03 1036.1O 110s.12 70.02 1035.5 10535 71.02 1034.9S 1105.98 72.02 1034.38 1106.40 71.02 1013.81 1106.3 14.02 1033.24 1107.26 15.01 1032.67 IB07.68 15.01 101210 11OR.11 77.01 103132 1108.54 78.01 1030.95 1108.96 79.01 1030.38 1109.39 30.01 1029.80 1109I 1.01 1029 23 I0.24 2.00 1028.66 1110.60 3.00 1028.08 LII.09 54.00 1027.SI II.SI E5.00 1026.93 1111.93 56.00 1026.36 1112.3s 87.00 1025.7 1117 7 8.00 1025 30 1113 20 100 0.9031 0.97910 1.00904 1.096 0.01613 0.0161) 0.01614 0.01614 1.9345 1.99187 2.05443 2.11667 2.18034 2.14575 231285 2,38168 241225 2.12464 349.91 340.14 J30.69 221.13 312.47 304.01 291.76 287.1 279.91 272.34 102 103 104 105 106 107 108 109 104 105 106 107 L11997 L1677 1.204 12999 0.01615 0.01615 0.01616 0.01616 0.01616 138S 1.0E 1. a14 L.26 L44 a1420 11223 L64) G.143 L I L9619 2.1455 1.139 1.994 109 a.1473 18097 19570 0.1490 1.05 19546 0.1S0 1.8014 1.921 0.125 17912 1.981 0.1543 1.793I 1.54 110 110 1.27644 263.03 257.9) 251.04 244.38 237.90 0.01617 253.02 267494 2.75293 2.11258 2.91481 2.99878 0.01617 257.91 231.02 0.01617 244.16 0.0161E 0.01618 237.89 0.01619 231.42 0.01S19 225.13 0.01619 219.63 112 113 114 1.39138 143162 112 113 114 115 0.1377 LT9 1.25 G.195 LTOS L 0.1612 1.67 L3 G.1629 1.1726 1.9356 a.1647 1.7686 1.9332 116 17 125.15 119.65 113.93 200.37 202.99 1.542 3.17296 1.26327 0.01420 213.91 19 120 t.64820 3.01620 0.01620 208.36 202.9 3.41052 120
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