The Thermodynamics of Heat-Engines (Classic Reprint)

Fahrenheit under constant pressure. For air, C= 53.18. C= the specific density-constant involved in a case concerning a mass of gas other than one pound. D= the disgregation-energy of dry saturated steam. =quantity of energy. F= efficiency. JI =the total heat of dry saturated steam above that of melted ice. =internal energy of a gas or vapor. =the mechanical equivalent of heat =778. Hl =the ratio of the specific heats of a gas under constant pressure and constant volume respectively. L= the latent heat of vaporization of dry saturated steam. =the isomorphic heat of water above that of melted ice. M= mass. JV= entropy. P= pressure, in pounds per square inch unless otherwise stated. Q= quantity of heat. Qi =the heat supplied at the upper temperature-level during a cycle. Q2 =the heat rejected at the lower temperature-level of a cycle. Q= the heat available for doing work =1 Q2. f= the heat actually converted into work during a cycle. i =volume-ratio of gaseous expansion. S= specific heat. T= absolute temperature Fahrenheit. 7i =the upper absolute temperature of a pair of temperature-limits. 72 =the lower absolute temperature of a pair of temperature-limits. =temperature Fahrenheit. y= volume, in cubic feet unless otherwise stated. IV =weight, in pounds avoirdupois unless otherwise stated. X= the external work involved in the vaporization of dry saturated steam. X= the unknown or indefinite exponent of the volume-ratio (in the expansion of a gas) in the equation connecting it with the pressure-ratio. =the unknown fractional proportion of steam to total mass in a steamand-water mixture.
(Typographical errors above are due to OCR software and don't occur in the book.)

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