Document k9nVye3LvGZ8n0OpV7apgb6O0

, AMERICAN SOCIETKffHEfinNG & VENTILATING ENGINEERS GUIBE,1923 TABLE 43. PROPERTIES OF SATURATED STEAM Continued Vacuum in in. of Mercury or Gage Pressure in lb. Absolute Pressure in LB. PER SQ. IN. IN DEG. FAHR. Total Heat above 32 DEG. FAHR. VOLUMEIN Latent Heat CU. FT. OF J B.t.u. in the B.t.u. in the in B.t.u. Water Steam Steam U ft S! R 1li ft sI a1 0.00 0.3 1.3 2.3 3.3 4.3 5.3 6.3 7.3 8.3 9.3 10.3 15.3 20.3 25.3 31.3 35.3 41.3 45.3 51.3 61.3 71.3 81.3 90.3 100.3 125.3 140.3 150.3 165.3 175.3 200.3 14.70 15. i 16. 1 17. ! 18. ' 19. 20. 21. 22. 23. 24. 25. 30. 35. 40. 46. 50. 56. 60, 66. 76. 86. 96. 105. 115. 140. 155. 165. 180. 190. 215. 212.00 213.00 216.3 219.4 222.4 225.2 228.0 230.6 233.1 235.5 237.8 240.1 250.3 259.3 267.3 275.8 281.0 288.2 292.7 299.0 308.5 317.1 324.9 331-4 338.1 353.1 361.1 366.1 373.1 377.6 388.0 180.0 181.0 184.4 187.5 190.5 193.4 196.1 198.8 201.3 203.8 206.1 208.4 218.8 227.3 236.1 244.8 250.1 257.5 262.1 268.5 278.3 287.2 295.3 302.0 309.0 324.6 332.9 338.2 345.6 350.4 361.4 1150.4 1150.7 1152.0 1153.1 1154.2 1155.2 1156.2 1157.1 1158.0 1158.8 1159.6 1160.4 1163.9 1166.8 1169.4 1172.0 1173.6 1175.7 1177.0 1178.8 1181.4 1183.6 1185.6 1187.2 1188.8 1192.2 1194.0 1195.0 1196.4 1197.3 1199.2 970.4 969.7 967.6 965.6 963.7 961.8 960.0 958.3 956.7 955.1 953.5 952.0 945.1 938.9 933.5 927.2 923.5 918.2 914.9 910.2 903.0 896.4 890.3 885.2 879.8 867.6 861.0 856.8 850.8 846.9 837.9 26.79 26.27 24.79 . 23.38 22.16 21.07 20.08 19.18. 18.37 17.62 16.93 16.30 13.74 11.89 10.49 9.20 8.51 7.65 7.17 6.56 5.74 5.10 4.60 4.23 3.88 3.219 2.920 2.753 2.533 2.406 2.138 . ! 58 CAPACITIES OF STEAM HEATING RISERS AS AFFECTED BY CRITICAL VELOCITY OF STEAM AND CONDENSATE MIXTURES THE flow, of steam in pipes has been the object of a great many investigations in the past, both practical and theoretical. .. These investigations have resulted in a large number of formulae and expressions giving relationships between weight of steam flowing, density of steam, pressure drop, and diameter of the pipe. This phase of the subject. Fig. 28. Curves Showing Relation of Total Condensation to Header Pressure however, has received very little attention and very little appears in-the literature on it. By the term critical velocity, as used in connection with steam and con densate mixtures, is meant the velocity at which the flow of steam and Material for this section was prepared especially for The Guide 1923 by F. C. Houghten, Pittsburgh, Pa. 59