5. A Carnot engine works between two heat reservoirs at temperatures Thot= 301.0 K and Tcold= 220.0 K. a. What is its efficiency? 0.27 % b. If it absorbs 200.0 J from the hot reservoir during each cycle, how much work does it do per cycle? 54 J c. How much heat does it reject during each cycle? 146 J d. What is the coefficient of performace, COP, of this engine when it works as a refrigerator between the same two reservoirs?

5. A Carnot engine works between two heat reservoirs at temperatures Thot= 301.0 K and Tcold= 220.0 K. a. What is its efficiency? 0.27 % b. If it absorbs 200.0 J from the hot reservoir during each cycle, how much work does it do per cycle? 54 J c. How much heat does it reject during each cycle? 146 J d. What is the coefficient of performace, COP, of this engine when it works as a refrigerator between the same two reservoirs?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 26P: The temperature of the cold reservoir of the engine is 300 K. It has an efficiency of 0.30 and...

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Question

Can you help with subpart d it is not correct

5. A Carnot engine works between two heat reservoirs at temperatures T_hot= 301.0 K and T_cold= 220.0 K.

a. What is its efficiency?

0.27 %

b. If it absorbs 200.0 J from the hot reservoir during each cycle, how much work does it do per cycle?

54 J

c. How much heat does it reject during each cycle?

146 J

d. What is the coefficient of performace, COP, of this engine when it works as a refrigerator between the same two reservoirs?

3.72

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