Question: Consider a gasoline engine for a car as an SSSF device where air and fuel enters at the surrounding conditions 25oC, 100 kPa and leaves

Consider a gasoline engine for a car as an SSSF device where air and fuel enters at the surrounding conditions 25oC, 100 kPa and leaves the engine exhaust manifold at 1000 K, 100 kPa as products assumed to be air. The engine cooling system removes 750 kJ/kg airs through the engine to the ambient. For the analysis take the fuel as air where the extra energy of 2200 kJ/kg of air released in the combustion process, is added as heat transfer from a 1800 K reservoir. Find the work out of the engine, the irreversibility per kilogram of air, and the first- and second-law efficiencies.

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AIR CV Total out to reservoirs mh Qmh W Qout ms QHTHSgen mass QoutTo h 29861 ST1 68631 ... View full answer

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