PROPERTIES OF SATURATED STEAM FOR VARYING AMOUNTS OF VACUUM
CALCULATED FROM MARKS AND DAVIS TABLES
______________________________________________________________________
| | | | | | | |
| | | | Heat of | Latent | Total | |
| | | Temp- | the Liquid| Heat | Heat | |
| | | erature | Above | Above | Above |Density or|
| | Absolute | Degrees | 32 De- | 32 De- | 32 De- |Weight per|
| Vacuum | Pressure | Fahren- | grees | grees | grees |Cubic Foot|
|Ins. Hg.| Pounds | heit | B. t. u. |B. t. u.|B. t. u.| Pounds |
|________|__________|_________|___________|________|________|__________|
| | | | | | | |
| 29.5 | .207 | 54.1 | 22.18 | 1061.0 | 1083.2 | 0.000678 |
| 29 | .452 | 76.6 | 44.64 | 1048.7 | 1093.3 | 0.001415 |
| 28.5 | .698 | 90.1 | 58.09 | 1041.1 | 1099.2 | 0.002137 |
| 28 | .944 | 99.9 | 67.87 | 1035.6 | 1103.5 | 0.002843 |
| 27 | 1.44 | 112.5 | 80.4 | 1028.6 | 1109.0 | 0.00421 |
| 26 | 1.93 | 124.5 | 92.3 | 1022.0 | 1114.3 | 0.00577 |
| 25 | 2.42 | 132.6 | 100.5 | 1017.3 | 1117.8 | 0.00689 |
| 24 | 2.91 | 140.1 | 108.0 | 1013.1 | 1121.1 | 0.00821 |
| 22 | 3.89 | 151.7 | 119.6 | 1006.4 | 1126.0 | 0.01078 |
| 20 | 4.87 | 161.1 | 128.9 | 1001.0 | 1129.9 | 0.01331 |
| 18 | 5.86 | 168.9 | 136.8 | 996.4 | 1133.2 | 0.01581 |
| 16 | 6.84 | 175.8 | 143.6 | 992.4 | 1136.0 | 0.01827 |
| 14 | 7.82 | 181.8 | 149.7 | 988.8 | 1138.5 | 0.02070 |
| 12 | 8.80 | 187.2 | 155.1 | 985.6 | 1140.7 | 0.02312 |
| 10 | 9.79 | 192.2 | 160.1 | 982.6 | 1142.7 | 0.02554 |
| 5 | 12.24 | 202.9 | 170.8 | 976.0 | 1146.8 | 0.03148 |
|________|__________|_________|___________|________|________|__________|
From the steam tables, the condensed Table 21 of the properties of steam
at different pressures may be constructed. From such a table there may
be drawn the following conclusions.