Explanation Carnot refrigerator is state that a system absorbs the amount of energy from the lower temperature medium and the amount of energy rejected to the higher temperature medium. The mathematically formula of the Carnot refrigerator as: COP R = 1 Q H / Q L − 1 . (I) Here, the energy transfer with higher temperature body is Q H and the energy transfer with lower temperature body is Q L . According to second law of thermodynamic the ratio of reversible heat engines is equal to thermodynamic temperature scale as: ( Q H Q L ) rev = T H <

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Chapter 6.11, Problem 90P

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The highest coefficient of performance that a refrigerator operating between temperature levels TL and TH.

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Chapter 6.11, Problem 89P

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The highest coefficient of performance that a refrigerator operating between temperature levels T L and T H .

Solution Summary: The author explains that the highest coefficient of performance of a refrigerator operating between temperature levels is T_L — the system absorbs the amount of energy from the lower and the higher temperatures.

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The highest coefficient of performance that a refrigerator operating between temperature levels TL and TH.

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