A heat pump uses refrigerant-134a as the working fluid and operates on an ideal vapour compression refrigeration cycle between 0.28 and 1.2 MPa. (a) Determine the coefficient of performance of the heat pump (b) Determine the COP of a reversed Carnot cycle operating within the same limits. (Ans: 5.35, 6.72)

A heat pump uses refrigerant-134a as the working fluid and operates on an ideal vapour compression refrigeration cycle between 0.28 and 1.2 MPa. (a) Determine the coefficient of performance of the heat pump (b) Determine the COP of a reversed Carnot cycle operating within the same limits. (Ans: 5.35, 6.72)

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

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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