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The stream of air and gasoline vapour, in the ratio of 14:1 by mass, enters a gasoline engine at a temperature of 30 degree C and leaves as combustion products at a temperature of 790 degree C.The engine has a specific fuel consumption of 0.3kg/kWh . the net heat transfer rate from the fuel-air stream to the jacket cooling water and to the surroundings is 35kW.The shaft power delivered by the engine is 26 kW. Compute the increase in the specific enthalpy of the fuel-air stream , assuming the changes in kinetic energy and in elevation to be negligible.

The stream of air and gasoline vapour, in the ratio of 14:1 by mass, enters a gasoline engine at a temperature of 30 degree C and leaves as combustion products at a temperature of 790 degree C.The engine has a specific fuel consumption of 0.3kg/kWh . the net heat transfer rate from the fuel-air stream to the jacket cooling water and to the surroundings is 35kW.The shaft power delivered by the engine is 26 kW. Compute the increase in the specific enthalpy of the fuel-air stream , assuming the changes in kinetic energy and in elevation to be negligible.

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