Document gbqbO778KQOy5wed9aJK325RL

American Society of Heating and Ventilating Engineers Guide, 1932- is divided into a nurhber of equal portions, each of which is called a degree. In the Fahrenheit scale, there are 180 degrees thus obtained, while the centigrade scale has 100 and the Reaumur has 80. Like divisions are marked off on the column above and below these two determined points in order that a greater range of temperature may be read. For temperatures above 500 F various types of pyrometers are employed. The mercurial pyrometer is a thermpmeter with an inert gas, such as Table 3. Thermal Properties of Water* Temp., P Sat. Pressure, Lb. per Sq. In! Volume, Cu. Ft. per Lb. Weight, Lb. per Cu. Ft. Specific Heat Temp., F Sat. Pressure, Lb. perSq. In. Volume, Cu. Ft. per Lb. Weight, Lb. per Cu. Ft. Specific Heat 20 30 40 50 60 70 80 90 100 no 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 0.050 0.081 0.122 0.178 0.256 0.363 0.507 0.698 0.949 1.274 1.692 2.221 2.887 3.716 4.739 5.99 7.51 9.34 11.53 14.12 17.19 20.78 24.97 29.83 35.44 41.87 49.22 57.57 67.02 77.68 89.65 103.0 118.0 134.6 153.0 0.01603 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 0.01651 0.01657 0.01663 0.01670 0.01677 0.01684 0.01692 0.01700 0.01708 0.01716 0.01725 0.01735 0.01745 0.01755 0.01766 0.01778 0.01790 0.01803 0.01816 62.37 62.42 62.43 62.42 62.37 62.30 62.22 62.11 62.00 61.86 61.71 61.55 61.38 61.20 61.00 60.80 60.58 6Q.36 60.12 59.88 59.63 S9.37 59.11 58.83 58.55 S8.26 57.96 57.65 57.32 56.98 56.62 56.24 55.85 55.46 55.06 1.0210 1.0104 1.0048 370 173.2 380 195.6 390 220.1 1.0015 0.9995 0.9982 0.9975 0.9971 400 410 420 430 440. 247 276 308 343 381 0.9970 0.9971 0.9974 0.9978 0.9984 450 422 460 466 470 514 480 565 490 620 0.9990 0.9998 1.0007 1.0017 1.0028 500 679 510 743 520 810 530 883 540 960 1.0039 1 550 1.0052 ! 560 1.0068 570 1;0085 580 1.0104 590 1043 1131 1224 1323 1429 1.0125 1.0148 1;0173 1.020 1.023 600 1540 610 1659 620 1784 630 1917 640 2057 1.026 1.029 1.033 1.036 1.040 650 2205 660 2361 670 2526 680 2699 690 2882 1.044 1.048 700 3075 706.3 3200 0.01829 0.01843 0.01857 0.0187 0.0189 0.0190 0.0192 0.0194 0.0195 0.0197 0.0199 0.0201 0.0203 0.0205 0.0208 0.0210 0.0212 0.0215 0.0218 0.0221 0.0224 0.0227 0.0231. 0.0235 0.024 0.024 0.025 0.025 0.026 0.027 0.028 0.029 0.031 0.034 0.048 54.66 54.25 53.84 1.053 1.057 1.062 53.42 - 52.99 52.55 52.11 51.66 1.067 1.072 1.078 i.083 ; 1.089 51.2 50.7 50.2 49.7 49.2 1.095 1.101 1.107 1.114 1.121 48.7 48.2 47.6 47.1 46.S 1.130 1.140 1.151 1.164 1.181 45.9 45.2 44.6 44.0 43.3 . 1.200 1.222 1.249 1.281 1.318 42.6 41.8 41.0 40.2 39.2 1.362 1.415 1.479 1.559 1.661 38.2 37.2 36.0 34.5 32.6 1.793 __________ -------L_ 29.7 20.9 ------- aReprinted by permission from Properties of Steam and Ammonia, by the late Prof. G. A. Goodenough. nitrogen or carbon dioxide, above the mercury column to prevent the mercury from boiling. The expansion pyrometer is based on the difference in expansion of two substances under the same heat conditions. It can be used for temperatures up to 1500 F. It is commonly made of a brass rod enclosed in an iron pipe, with one end of the rod attached to a cap at'the end of the pipe and the other connected by a multiplying gear to a pointer moving around a graduated dial. Thermo-electric pyrometers may be used to measure temperatures up to 2900 F and are based on the principle that when wires of two different metals are joined with two junctions which are held at different tempera- 534 Chapter 39--Physical Data Table 4. Properties of Saturated Steam* Absolute Pressure, Lb. per Sq. In. Tem perature, Deg.Fahr. Volume, Cu. Ft. per Lb. Weight, Lb. per Cu. Ft. Heat Content in B.t.u. of of liquid Vapor Latent Heat xn B.t.u. Entropt of Vapor In | of of Vapor ization ternal liquid ization of Vapor p 1 2 3 4 5 6 7 8 9 10 M 12 13 14 14.7 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 98 100 102 104 106 108 110 112 114 116 118 t Vig 101.76 126.10 141.49 152.99 162.25 170.07 176.85 182.87 188.28 193.21 197.75 201.96 205.88 209.56 212.0 216.3 222.4 228.0 233.1 237.8 242.2 246.4 250.3 254.0 257.6 260.9 264.2 267.2 270.2 273.0 275.8 278.4 281.0 283.5 285.9 288.2 ' 290.5 292.7 294.9 296.9 299.0 301.0 302.9 304.8 306.7 308.5 310.3 312.0 313.7 315.4 317.1 318.7 320.3 321.8 323.3 324.8 326.3 327.8 329.2 330.7 332.0 333.4 334.8 336.1 337.4 338.7 340.0 333.3 173.6 118.7 90.6 73.5 62.0 S3.7 47.35 . 42.41 38.43 35.16 32.41 30.07 28.06 26.81 24.76 22.18 20.10 18.38 16.95 15.73 14.67 13.76 12.95 12.24 11.60 11.03 10.51 10.04 9.61 9.22 8.86 8.53 8.22 7.93 7.67 7.42 7.18 6.97 6.76 6.57 6.39 6.22 6.05 5.90 5.75 5.61 5.48 5.35 5.23 5.12 S.01 4.905 4.805 4.709 4.617 4.528 4.442 4.359 4.279 4.202 4.128 4.057 3.988 31921 3.857 3.795 1 hi ^g ^fg 0.00300 I 69.76 0.00576 94.02 0.00843 109.38 0.01104 120.9 0.01360 1 130.1 0.01614 137.9 0.01864 144.7 0.02112 150.8 0.02358 156.2 0.02602 161.1 0.02844 165.7 0.03086 169.9 0.03326 173.8 0.03564 177.5 0.03730 180.0 0.04038 184.3 0.04508 190.5 0.04976 196.0 0.0544 201.2 0.0590 206.0 0.0636 210.4 0.0681 214.6 0.0727 218.6 0.0772 222.4 0.0818 225.9 0.0862 229.4 0.0907 232.6 0.0951 235.8 0.0996 238.8 0.1040 241.7 0.1085 244.5 0.1129 247.2 0.1173 249.8 0.1217 252.3 0.1261 254.7 0.1304 257.1 0.1348 259.5 0.1392 261.7 0.1435 263.9 0.1479 266.1 0.1522 268.2 0.1566 270.2 0.1609 272.2 0.1652 274.2 0.1695 276.1 0.1738 278.0 0.1781 279.8 0.1824 281.6 0.1868 283.4 0.1910 285.1 0.1953 286.8 0.1996 288.5 0.2039 290.1 0.2081 291.7 0.2124 293.3 0.2166 294.8 0.2209 296.4 0.2251 297.9 0.2294 299.4 0.2337 300.9 0.2380 302.3 0.2422 303.7 0.2465 305.1 0.2508 306.5 0.2550 307.9 0.2593 309.2 0.2635 310.6 1105.4 1116.2 1122.9 1127.9 1131.7 1135.0 1137.8 1140.3 1142.5 1144.4 1146.2 1147.9 1149.4 1150.8 1151.7 1153.4 1155.7 1157.7 1159.6 1161.3 1162.8 1164.3 1165.7 1166.9 1168.1 1169.2 1170.3 1171.3 1172.2 1173.2 1174.0 1174.8 1175.6 1176.4 1177.1 1177.8 1178.5 1179.1 1179.7 1180.3 1180.9 1181.5 1182.0 1182.5 1183.0 1183.5 1184.0 1184.4 1184.9 1185.3 1185.7 1186.1 1186.5 1186.9 1187.3 1187.7 1188.0 1188.4 1188.7 1189.0 1189.4 1189.7 1190.0 1190.3 1190.6 1190.8 1191.1 ^fg U if 1035.6 1022.2 1013.5 1007.0 1001.6 997.1 993.1 989.5 986.3 983.3 980.5 978.0 975.6 973.3 971.7 969.1 965.2 961.7 958.4 955.3 952.4 949.7 947.1 944.6 942.2 939.9 937.7 935.5 933.5 931.5 929.6 927.7 925.9 924.1 .922.4 920.7 919.0 917.4 915.8 914.3 912.7 911.2 909.8 908.3 906.9 905.5 904.2 902.8 901.5 900.2 898.9 897.7 896.4 895.2 894.0 892.8 891.6 890.5 889.3 888.2 887.1 885.9 884.8 883.7 882.7 88116880.6 973.9 1 0.1327 957.9 0.17S0 947.6 1 0.2009 939.9 0.2199 933.6 I 0.2348 928.2 0.2473 923.6 0.2581 919.4 0.2675 915.6 0.2759 912.2 0.2835 909.0 0.2905 906.0 0.2969 903.2 0.3028 900.6 0.3083 898.8 0.3120 895.8 0.3184 891.4 0.3274 887.3 ! 0.3356 883.6 0.3430 880.1 0.3499 876.8 0.3563 873.7 0.3622 870.7 0.3679 867.9 0.3731 865.2 0.3781 862.7 0.3829 860.2 0.3874 857.8 1 0.3917 855.5 ! 0.3958 853.3 0.3998 851.2 0.4036 849.1 0.4072 847.1 0.4108 845.1 0.4142 843.2 0.4174 841.4 0.4206 839.5 0.4237 837.8 0.4267 836.0 0.4296 834.3 0.4324 832.7 0.4352 831.1 0.4379 829.5 0.4405 827.9 0.4431 826.4 0.4456 824.9 0.4480 823.4 0.4504 821.9 0.4527 820.5 0.4550 819.1 0.4572 817.7 0.4594 816.3 0.4615 815.0 0.4636 813.7 0.4657 812.4 0.4677 811.1 0.4697 809.8 0.4717 808.6 0.4736 807.4 0.4755 806.1 0.4773 804.9 0.4791 803.8 0.4809 802.6 0.4827 801.4 0.4844 800.3 0.4861 799.2 0.4878 798.0 0.4895 ^fg 1.8448 1.7452 1.6862 1.6438 1.6107 1.5835 1.5603 1.5402 1.5223 1.5062 1.4916 1.4783 1.4659 1.4545 1.4469 1.4337 1.4153 1.3987 1.3837 1.3698 1.3S70 1.3452 1.3340 1.3236 1.3137 1.3044 1.2956 1.2871 1.2791 1.2714 1.2640 1.2570 1.2501 1.2436 1.2373 1.2311 1.2252 1.2195 1.2139 1.2085 1.2032 1.1981 1.1931 1.1883 1.1835 1.1789 1.1744 1.1700 1.1657 1.1615 1.1574 1.1534 1.1495 1.1456 1.1419 1.1381 1.1345 1.1309 1.1274 1.1239 1.1205 1.1172 1.1138 1.1106 1.1074 1.1043 1.1012 Sg 1.9775 1.9203 1.8871 1.8637 1.8456 1.8308 1.8184 1.8077 1.7982 1.7897 1.7821 1.7752 1.7687 1.7628 1.7589 1.7521 1.7427 1.7343 1.7267 1.7197 1.7133 1.7074 1.7019 1.6967 1.6918 1.6873 1.6830 1.6788 1.6749 1.6712 1.6676 1.6642 1.6609 1.6577 1.6547 1.6517 1.6489 1.6462 1.6435 1.6409 1.6384 1.6360 1.6336 1.6313 1.6291 1.6269 1.6248 1.6227 1.6207 1.6187 1.6168 1.6149 1.6131 1.6113 1.6096 1.6079 1.6062 1.6045 1.6028 1.6012 1-5996 1:5981 1.5965 1.5950 1.S935 1.5921 1.5907 "This table is abstracted by permission from Properties of Steam and Ammonia', by the late Prof. G. A. Goodenough.