| 1.0653 | 1.0660 |
| 210 | 1.0516 | 1.0523 | 1.0530 | 1.0538 | 1.0544 | 1.0550 | 1.0556 |
|_______|________|________|________|________|________|________|________|

The temperature, pressure and other properties of steam for varying
amounts of vacuum and the pressure above vacuum corresponding to each
inch of reading of the vacuum gauge are given in Table 20.

TABLE 20

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 |
|________|__________|_________|___