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A machine working on a Carnot cycle operates between 305 K and 260 K. Determine the C.O.P. when it is operated as 1. a refrigerating machine; 2. a heat pump; and 3. a heat engine.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 9RQ: The defrost cycle in a domestic refrigerator may be terminated by two methods: ___and___.

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A machine working on a Carnot cycle operates between 305 K and 260 K.
Determine the C.O.P. when it is operated as 1. a refrigerating machine; 2. a heat pump; and 3. a
heat engine.

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