Document VG532KQ432Vmkwgoa4qBJRwzw

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 PSYCHROMETRIC CHART Many types of charts which give graphical solutions of the psychrometric equations, and other useful data, have been devised. One of these, the Revised Bulkeley Psychrometric Chart6, will be found attached to the inside back cover of this book. Detailed instructions in the use of this chart will be found thereon. PROPERTIES OF WATER Composition of Water. Water is a chemical compound (HjO) formed by the union of two volumes of hydrogen and one volume of oxygen, or two parts by weight of hydrogen and 16 parts by weight of oxygen. Density of Water. Water has its greatest density at 39.2 F, and it expands when heated or cooled from this temperature. At 62 F a U. S. gallon of 231 cu in. of water weighs approximately lb, and a cubic foot of water is equal to 7.48 gal. The specific volume of water depends on the temperature and it is always the reciprocal of its density. (See Table 7.) Table 7. Thermal Properties of Water- Temperature Deg F 32 40 SO 60 70 80 90 100 . 110 120 130 140 ISO 160 170 180 190 200 210 212 220 240 260 280 300 3S0 400 4S0 500 5S0 600 700 Sat. Press. Lb per Sq In. 0.0887 0.1217 0.1780 0.2561 0.3628 0.5067 0.6980 0.9487 1.274 1.692 2.221 2.887 3.716 4.739 5.990 7.510 9.336 11.525 14.123 14.696 17.188 24.97 35.43 49.20 67.01 134.62 247.25 422.61 681.09 1045.4 1544.6 3096.4 Volume Cu Ft per Lb 0.01602 0.01602 0.01602 0.01603 0.01605 0.01607 0.01610 0.01613 0.01616 0.01620 0.01625 0.01629 0.01634 0.01639 0.01645 0.01650 0.01656 0.01663 0.01669 0.01670 0.01676 0.01690 0.01706 0.01723 0.01742 0.01797 0.01865 0.01950 0.02050 0.02190 0.02410 0.03940 Weight Lb per Cu Ft 62.42 62.42 62.42 62.38 62.31 62.23 62.11 62.00 61.88 61.73 61.54 61.39 61.20 61.01 60.79 60.61 60.39 60.13 59.92 59.88 59.66 59.17 58.62 58.04 57.41 55.65 53.62 51.30 48.80 45.70 41.50 25.40 ` ' Specific Heat 1.0093 1.0048 1.0015 0.9995 0.9982 0.9975 0.9971 0.9970 0.9971 0.9974 0.9978 0.9984 0.9990 0.9998 1.0007 1.0017 , 1.0028' 1.0039 1.0052 1.0055 1:0068 1.0104 1.0148 1.0200 1.0260 1.0440 1.0670 1.0950 1.1300 1.2000 1.3620 -- The original Bulkeley Psychrometric Chart was presented to the Society in 1926. (See A.S.H.V.E. Transactions. Vol. 32, 1926, p. 163). Single copy of the revised chart can be furnished at a cost of 6 .25. - 26 CHAPTER 1. AIR, WATER AND STEAM Table 8. Properties of Saturated Steam: Pressure Table3 Abs. Press. In. He. P Temp F t Specific Volume Sat. Liquid Vf Sat. Vapor . V, Enthalpy Entropy Sat. Liquid hf Evap. hfg Sat. Sat. Vapor Liquid h. Sf Evap. Sfg Sat. Vapor Sg 0.25 0.50 0.75 1.00 1.5 40.23 58.80 70.43 79.03 91.72 0.01602 0.01604 0.01606 0.01608 0.01611 2423.7 1256.4 856.1 652.3 444.9 8.28 26.86 38.47 47.05 59.71 1071.1 1060.6 1054.0 1049.2 1042.0 1079.4 1087.5 1092.5 1096.3 1101.7 0.0166 0.0532 0.0754 0.0914 0.1147 2.1423 2.0453 1.9881 1.9473 1.8894 2.1589 2.0986 2.0635 2.0387 2.0041 2 101.14 0.01614 339.2 69.10 1036.6 1105.7 0.1316 1.8481 1.9797 4 125.43 0.01622 176.7 93.34 1022.7 1116.0 0.1738 .1.7476 1-9214 6 140.78 0.01630 120.72 108.67 1013.6 1122.3 0.1996 1.6881 1.8877 8 152.24 0.01635 92.16 120.13 1006.9 1127.0 0.2186 1.6454 1.8640 10 161.49 0.01640 74.76 129.38 1001.4 1130.8 0.2335 1.6121 1.8456 12 169.28 0.01644 14 176.05 0.01648 16 182.05 0.01652 18 187.45 0.01655 20 192.37 0.01658 63.03 54.55 48.14 43.11 39.07 137.18 143.96 149.98 155.39 160.33 996.7 992.6 988.9 985.7 982.7 1133.9 1136.6 1138.9 1141.1 1143.0 0.2460 0.2568 0.2662 0.2746 0.2822 1.5847 1.5613 1.5410 1.5231 1.5069 1.8307 1.8181 1.8072 1.7977 1.7891 22 24 26 28 30 Lb Sq In. 14.696 16 18 20 22 24 26 28 196.90 201.09 205.00 208.67 212.13 212.00 216.32 222.41 227.96 233.07 237.82 242.25 246.41 0.01661 0.01664 0.01667 0.01669 0.01672 0.01672 0.01674 0.01679 0.01683 0.01687 0.01691 0.01694 0.01698 35.73 32.94 30.56 28.52 26.74. 1G4.S7 169.09 173.02 176.72 180.19 979.8 977.2 974.8 972.5 970.3 1144.7 1146.3 1147.8 1149.2 1150.5 0.2891 0.2955 0.3014 0.3069 0.3122 1.4923 1.4789 1.4665 1.4550 1.4442 1.7814 1.7744 1.7679 1.7619 1.7564 26.80 24.75 22.17 20.089 18.375 16.938 15.715 14.663 180.07 184.42 190.56 196.16 201.33 206.14 210.62 214.83 970.3. 1150.4 967.6 1152.0 963.6 1154.2 960.1. 1156.3 956.8 1158.1 953.7 1159.8 950.7 1161.3 947.9 1162.7 0.3120 0.3184 0.3275 0.3356 0.3431 0.3500 0.3564 0.3G23 1.4446 1.4313 1.4128 1.3962 1.3811 1.3672 1.3544 1.3425 1.7566 1.7497 1.7403 1.7319 1.7242 1.7172 1.7108 1.7048 30 250.33 0.01701 . 13.746 218.82 945.3: 1164.1 0.3680 1.3313 1.6993 32 254.05 0.01704 12.940 222.59 942.8 1165.4 0.3733 1.3209 1.6941 34 257.58 0.01707 12.226 226.18 940.3 1166.5 0.3783 1.3110 1.6893 36 260.95 0.01709 11.588 229.60 938.0 1167.6 0.3831 1.3017 1.6848 38 264.16 0.01712 11,015 232.89 935.8 1168.7 0.3876 1.2929 1.6805 40 267.25 0.01715 42 270.21 0.01717 44 273.05 .0.0172046 275.80 0.01722 48 278.45 0.01725 10.498 10.029 9.601 9.209 8.848 236.03 239.04 241.95 244.75 247.47 933.7 931.6 929.6 927.7. 925.8 1169.7 1170.7 1171.6 1172.4 1173.3 0.3919 0.3960 0.4000 0.4038 0.4075 1.2844 1.2764 1.2687 1.2013 1.2542 1.6763 1.6724 1.6687 1.6652 1.6617 50 281.01 0.01727 52 283.49 0.01729 54 285.90 0.01731 56 288.23 0.01733 58 290.50 0.01736 8.515 8.208 7.922 7.656 7.407 250.09 252.63 255.09 257.50 259.82 924.0 922.2 920.5 918.8 917.1 1174.1 1174.8 1175.6 1176.3 1176.9 0.4110 0.4144 0.4177 0.4209 0.4240 1.2474 1.2409 1.2346 1.2285 L2226 1.65S5 1.6553 1.6523 1.6494 1.6466 60 292.71 0.01738 62 294.85 0.01740 64 296.94 0.01742 66 298.99 0.01744 68 300.98 0.01746 7.175 6.957 6.752 6.560 . 6.378 262.09. 264.30 266.45 268.55 270.60 915.5 913.9 912.3 910.8 909.4 1177.6 1178.2 1178.8 ,1179.4 1180.0 0.4270 0.4300 0.4328 0.4356 0.4383 1.2168 1.2112 1.2059 1.2006 1.1955 1.0438 1.6412 1.6387 1.6362 1.6338 70 302.92 0.01748 72 304.83 0.01750 74 306.68 0.01752 76 308.50 0.01754 78 310.29 0.01755 6.206 6.044 5.890 5.743 5.604 272.61 274.57 276.49 278.37 280.21 907.9 906.5 905.1 903.7 902.4 1180.6 1181.1 1181.6 1182.1 1182.6 0.4409 0.4435 0.4460 0.4484 0.4508 1.1906 1.1857 1.1810 1.1764 1.1720 1.6315 1.6292 1.6270 1.6248 1.6228 80 312.03 0.01757 82 313.74 0.01759 84 315.42 0.01761 86 317.07 0.01762 88 318.68 0.01764 5.472 5.346 5.226 5.111 5.001 282.02 283.79 285.53 287.24 288.91 901.1 899.7 898.5 897.2 895.9 1183.1 1183.5 1184.0 1184.4 1184.8 0.4531 0.4554 0.4576 0.4598 0.4620 1.1676 1.1633 1.1592 1.1551 1.1510 1.6207 1.6187 1.6168 1.6149 1.6130 90 320.27 0.01766 . 4.S96 290.56 894.7 1185.3 0.4641 1.1471 1.6112 92 321.83 0.01768 4.796 292.18 893.5 1185.7 0.4661 1.1433 1.6094 94 323.36 0.01769 4.699 293.78 892.3 1186.1 0.4682 1.1394 1.6076 96- 324.87 0.01771 4.606 295.34 891.1 -1186.4 0.4702 1.1358 1.6060 98 326.35 0.01772 4.517 296-89 889.9 1186.8 0.4721 1.1322 1.6043 Press. In. He. P 0.25 0.50 0.75 1.00 1.5 2.0 4.0 6 8 10 12 14 16 18 20 22 24 26 28 30 Lb Sq In. 14.696 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 72 74 76 78 80 82 84 86 88 90 92 94 96 98 Reprinted by permission from Thermodynamic Properties o Steam, by J. H. Keenan and F. G. Keyes, published by John Wiley and Sons. Inc. 27