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A Carnot refrigerator operates withdrawing heat from -10 degrees C and rejecting heat to the environment at 30 degrees C in summer. A) What is

A Carnot refrigerator operates withdrawing heat from -10 degrees C and rejecting heat to the environment at 30 degrees C in summer. A) What is its coefficient of performance (efficiency) in summer? B) In winter time the surrounding temp is 22 degrees C. Will the coefficient of performance change? If yes, calculate C.O.P. for the winter also.

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