Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . ! : ij ⢠lq N. <n : <* *l : n : M Fig. 144. Answer, 18*8 lbs. per square the diameter of the pair of cylinders from which the abovediagram was taken was 52, the length of stroke 42, the rev-olutions per minute 41, the steam gauge showing 15 lbs., thevacuum gauge 21 . what is the indicated horse power ? In finding the I. II. P. the heights of steam and vacuumgauges and the barometer arc not needed, but they are gener-ally noted on the paper on which the di
Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . ! : ij ⢠lq N. <n : <* *l : n : M Fig. 144. Answer, 18*8 lbs. per square the diameter of the pair of cylinders from which the abovediagram was taken was 52, the length of stroke 42, the rev-olutions per minute 41, the steam gauge showing 15 lbs., thevacuum gauge 21 . what is the indicated horse power ? In finding the I. II. P. the heights of steam and vacuumgauges and the barometer arc not needed, but they are gener-ally noted on the paper on which the diagram is drawn. The pressure shown by the steam gauge is useful to the en-gineer, because it enables him to see what is the loss of pressureien the boiler and the cylinder ; for Instance, in the dia-gram in the full steam line is 12 lbs. above the atmosphericline, and the steam gauge showed 15 lbs. ; therefore there wasof 3 lbs.; but for the purpose of finding the EL weonly require to know the mean pressure throughout the stroke;in our diagram it ie 18*8 lbs. Now then, = 34 feel l 694. tTO f< :â
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