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A four- Stroke engine operates on methane with an equivalence ratio of 0.90. The air and...

A four- Stroke engine operates on methane with an equivalence ratio of 0.90. The air and fuel enter the engine at 298 K, and the exhaust is at 530'C. The heat rejected to the coolant is 350 MJ/Kmol of fuel. Under these conditions determine:

a. The enthalpy of the exhaust combustion products.

b. The specific work output of the engine, and

c. The first law of efficiency of the engine.

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