Thermodynamics of the steam-engine and other heat-engines (1889)
Peabody, Cecil Hobart, 1855-1934 · New York, Wiley & Sons · leaf 58
be divided into cycles, foreach of which the principle holds, and the summation for thewhole cycle will give the same result as above.. If any area be enclosed by any curve whatever, as in Fig. 20,the cycle may be approximately replacedby a complex cycle composed of isother-mals and adiabatics… … Fig. / = O. The two laws of thermodynamics may therefore be expressedfor closed reversible cycles by the two equations, dO fdQ = AW, /^-O.
Thermodynamics · Steam-engines · Heat-engines
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