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Kp = 1 lb. of air at constant pressure 0.2378 × 772 = 183.5 = 100 Kv = 1 lb. of air at constant volume 0.1688 × 772 = 130.3 = 71 Difference, being heat converted into power 0.0690 × 772 = 53.2 = 29 Or, in a hot-air engine without regeneration, the maximum effect of 1 lb. of air heated 1° Fahr. would be 53.2 f.p.
The quantity of heat Ky necessary to heat air under constant volume is to Kv, or that necessary to heat it under constant pressure, as 71:100, or as 1:1.408, or very nearly as 1:SQRT a result which was arrived at by Masson from theoretical considerations.
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