you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant. You design your ideal compression-based refrigeration cycle to operate between 2 bar and 9 bar. Before entering the ideal butterfly valve (delta H = 0), the refrigerant is a saturated liquid. Before entering the compressor, the refrigerant is saturated vapor. In fact, in isentropic operation, the refrigerant which leaves the compressor is also saturated vapor. The operation of the compressor and the evaporator is isobaric. Assuming a mass flow rate of 1.5 kg / s, determine the compressor efficiency required to achieve a coefficient of performance of 6.96. What is ?? ̇ et ?? ̇ to this performance.

you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant. You design your ideal compression-based refrigeration cycle to operate between 2 bar and 9 bar. Before entering the ideal butterfly valve (delta H = 0), the refrigerant is a saturated liquid. Before entering the compressor, the refrigerant is saturated vapor. In fact, in isentropic operation, the refrigerant which leaves the compressor is also saturated vapor. The operation of the compressor and the evaporator is isobaric. Assuming a mass flow rate of 1.5 kg / s, determine the compressor efficiency required to achieve a coefficient of performance of 6.96. What is ?? ̇ et ?? ̇ to this performance.

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 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...

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