Q1 A Carnot refrigeration cycle absorbs heat at -8°C and rejects heat at 55°C. (a) If the heat rejection rate is 30 kW, calculate the heat extraction rate, the work input, and the COP of the refrigeration cycle. (b) If the cycle operates as a heat pump calculate the COP of the cycle. [Answers: (a) 24.24 kW, 5.76 kW, 4.2, (b) 5.2]

Q1 A Carnot refrigeration cycle absorbs heat at -8°C and rejects heat at 55°C. (a) If the heat rejection rate is 30 kW, calculate the heat extraction rate, the work input, and the COP of the refrigeration cycle. (b) If the cycle operates as a heat pump calculate the COP of the cycle. [Answers: (a) 24.24 kW, 5.76 kW, 4.2, (b) 5.2]

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 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

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A Carnot refrigeration cycle absorbs heat at -8°C and rejects
Q1
heat at 55°C. (a) If the heat rejection rate is 30 kW, calculate the heat
extraction rate, the work input, and the COP of the refrigeration cycle.
(b) If the cycle operates as a hcat pump calculate the COP of the cyclc.
[Answers: (a) 24.24 kW, 5.76 kW, 4.2, (b) 5.2|

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