Ratio of heat input to engine to heat remove from cold body
A heat engine of 30% thermal efficiency drives a refrigerator having a coefficient of performance of 4. Determine the ratio of the heat input to the engine to the heat remove from the cold body by the refrigerator.
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The engine produces 75 kW of power and rejects heat into the cold reservoir at a rate of 9 kW. (a) Find the efficiency of the heat engine, (b) Is the engine reversible?
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