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A GRAPHICAL METHOD OF CALCULATING GAS ENGINE EFFICIENCIES. (INCLUDING PLATE AT BACK OF VOLUME)

1908
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Minutes of the Proceedings of the Institution of Civil Engineers
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THE following is an explanation of a graphic method for calculating the theoretical efficiency of gas-engines. The specific heats and other data are taken from a Paper by Mr. Leonard Bairstow.1 From general thermo-dynamic relations where H denotes heat added (in foot-lbs.). kv " specific heat a t constant volume (in foot-lbs.). t " absolute temperature in degrees Centigrade. P " absolute pressure in pounds per square foot. V " volume in cubic feet. I n adiabatic expansion or compression d H =

doi:10.1680/imotp.1908.17595
fatcat:lmqavvg45jbetaxdw6i36n3z7a