Reversing the Role of a Great Engine: Refrigerator or Heat Pump?

gunparashar
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Reverse of a great engine is refrigerator or heat pump?
 
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Both, I suppose. A refrigerator and a heat pump are the same thing. It's just that (in common usage anyway), with a heat pump you can change which side is hot and which side is cold.
 
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Thread 'Query on Isentropic relationships (such as PV^gamma = constant)'

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