PROBLEMS(1)A reversed Carnot cycle is used for refrigeration andrejects 1,000 kW of heat at 340 K while receiving heat at 250 K.Determine (a) COP, (b) the power required, and (c) therefrigerating effect.Ans. (a) 2.778, (b) 264.7 kW (c) 735.3 kWA reversed Carnot cycle has a refrigerating COP of 4.(2)(a) What is the ratio Tmax/Tmin? (b) If the work input is 6 kW,what will be the maximum refrigerating effect, kJ/min and tons.Ans. (a) 1.25, (b) 6.82 TRA reversed Carnot engine removes 40,000 kW from a(3)heat sink. The temperature of the heat sink is 260 K and thetemperature of the heat reservoir is 320 K. Determine the powerrequired of the engine.Ans. 9230.7 kW

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(1) A reversed Carnot cycle is used for refrigeration and rejects 1,000 kW of heat at 340 K while receiving heat at 250 K. Determine (a) COP, (b) the power required, and (c) the refrigerating effect. Ans. (a) 2.778, (b) 264.7 kW (c) 735.3 kW

(1) A reversed Carnot cycle is used for refrigeration and rejects 1,000 kW of heat at 340 K while receiving heat at 250 K. Determine (a) COP, (b) the power required, and (c) the refrigerating effect. Ans. (a) 2.778, (b) 264.7 kW (c) 735.3 kW

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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