An ammonia refrigeration compressor takes its suction from the evaporator, at a temperature of -200F and a quality of 95%. The compressor discharges at a pressure of 100 psi, liquid ammonia leaves the condenser at 500F. (a)Determine the heat absorbed by the evaporator in

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 20RQ: Welded ______sealed compressors are normally used in household refrigerators.

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Question

An ammonia refrigeration compressor takes its suction from the evaporator, at a temperature of
-200F and a quality of 95%. The compressor discharges at a pressure of 100 psi, liquid ammonia
leaves the condenser at 500F.
(a)Determine the heat absorbed by the evaporator in kJ/kg.
(b)Determine the heat rejected to the condenser in kJ/kg.
(c)Determine the COP.
(d)Determine the horsepower per ton of refrigeration.
(e)Determine the quality of refrigerant upon entering to the evaporator

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