Steam engines; a thorough and practical presentation of modern steam engine practice (1917)
Ludy, Llewellyn V., 1875-, American Technical Society · Chicago, American technical society · leaf 98
ded by 30, or nearly one-half pound per square inch, the exactvalue being 0.49 pounds per square inch. Suppose the vacuum gageof a condenser reads 26. This means there has been a reduction ofpressure corresponding to 26 inches of mercury or 20x0.49, or 12.74pounds per square inch. If the… … Fig. 65. Section of Air or Vacuum Pump S8 STEAM ENGINES many more on large and small vessels which cannot be discussedhere, such as machines used for ventilation, forced draft, steering,weighing anchor, operating hoists and capstans, compressed air andrefrigeration machines, and electric lighting.…
Steam-engines
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