Vapors for heat engines, including considerations relating to the use of fluids other than steam for power generation; a study of desirable vacuum limits in simple condensing engines: methods for computing efficiencies of vapor cycles with limited expansion and superheat; a volume-temperature equation for dry steam, and new temperature-entropy diagrams for various engineering vapors (1912)
Ennis, William D. (William Duane), b. 1877 · New York, D. Van Nostrand Company · leaf 44
WbC = PVClWsa = pVs; and by the common formula for adiabaticexpansion, Wcr = h+rc — hu — Xrrh ....(/) in which expressions V denotes the vapor volume at thesubscript state and r the internal latent heat of vaporiza-tion. Then abcrs = PVc — pVs-\-hi,-{-rc—hu—Xrrt. . . (J) The conditions of the… … Fig. 5.—Rankine Cycle for Dry Vapor 36 VAPORS FOR HEAT ENGINES from which xT may be obtained when lt is tabular, and Vs=Vr = XTVh very nearly, Vt being also tabular. Such a comparison would be of little value. Expansionis in practice limited, not by an assigned temperature tr,but by a ratio of…
Heat-engines · Vapors
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