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Answer on Molecular Physics | Thermodynamics Question for cncrowell

Question #5548
A refrigerator operates with Carnot efficiency
between temperatures −4.8C and 36.1C.
What is its coefficient of performance?
Expert's answer
The coefficient of performance or COP at the Carnot efficiency is defined to be:
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
where QH is the heat supplied to the hot reservoir
W is the work consumed by the heat pump

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