Carnot cycle heat pump utilizes R-134a as the working fluid. Heat is transferred from the fluid at 100 F, and during this process the refrigerant changes from saturated vapor to saturated liquid. Heat transfer for the refrigerant takes place at 20 F. You are asked to do the following: (a) Show and describe the cycle on a T-s diagram (b) Calculate the quality at the beginning and at the end of the isothermal process at 20 F (c) Determine the coefficient of performance for the cycle.

Carnot cycle heat pump utilizes R-134a as the working fluid. Heat is transferred from the fluid at 100 F, and during this process the refrigerant changes from saturated vapor to saturated liquid. Heat transfer for the refrigerant takes place at 20 F. You are asked to do the following: (a) Show and describe the cycle on a T-s diagram (b) Calculate the quality at the beginning and at the end of the isothermal process at 20 F (c) Determine the coefficient of performance for the cycle.

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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