Refrigerant-134a enters the compressor of arefrigerator at 140 kPa and -10°C at a rate of 0.3m3/min and leaves at 1 MPa. The isentropicefficiency of the compressor is 78 percent. Therefrigerant enters the throttling valve at 0.95 MPaand 30°C and leaves the evaporator as saturatedvapour at -18.5°C. determine the coefficient ofperformance.

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Answered: Refrigerant-134a enters the compressor…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Refrigerant-134a enters the compressor of a refrigerator at 140 kPa and -10°C at a rate of 0.3 m3/min and leaves at 1 MPa. The isentropic efficiency of the compressor is 78 percent. The refrigerant enters the throttling valve at 0.95 MPa