Working Details of a Gas Engine Test Including a Method of Determining the Temp
Working Details of a Gas Engine Test Including a Method of Determining the Temp
R H Robert Heywood Fernald
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9 = 7. 93 53. British Thermal Units Equivalent to /. 77. P. 83. The determination is the same as that of 51, with the ex- ception that indicated horse-power is substitued for brake horse- power. A" Run No. 6 : I. H. P. _= 7. 93 B" Run No. 6 : I. H. P. = 3. 40 B. T. U. = 42. 4 x 7. 93 x 10 = 3, 360 B. T. U. = 42. 4 x 3. 4 x 10 - 1, 440 54. Gas Horse-power. 55. B. T. U. Equivalent to Gas II. P. H^. 84. In order to determine the theoretically possible power, it is necessary to know the heat equiva...lent of the fuel used. This heat of combustion may be determined by chemical analysis or by means of a calorimeter. The calorimeter generally recommended seems to be the Mahler, for solid fuels and oils, and Junker for gas. (See " Report of Committee on Standardizing a System of Testing Steain Engines/ 7 paper ~No. 0943, and " Efficiency Test of a One Hundred and Twenty-five Horse-power Gas Engine/' by C. H. Robertson, paper No. 907, American Society of Mechanical Engineers. ) Since the mixtures considered are explosive mixtures and are used under such conditions, a calorimeter designed and calibrated for such conditions should be used for accurate determinations.
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