A vapor compression cycle using Ammonia as refrigerant operates at an evaporating temperature of -5 deg. Centigrade and a condensing temperature of 35 deg. Centigrade. The liquid Ammonia was subcooled before entering the thermostatic expansion valve (TEV) to 30°C_ and the suction vapor was superheated to 20°C without useful cooling. Determine a) the Coefficient of Performance of the cycle. For 15 TOR determine b) the power required by the compressor c) the heat rejected in the condenser d) volume flow rate at the suction.

A vapor compression cycle using Ammonia as refrigerant operates at an evaporating temperature of -5 deg. Centigrade and a condensing temperature of 35 deg. Centigrade. The liquid Ammonia was subcooled before entering the thermostatic expansion valve (TEV) to 30°C_ and the suction vapor was superheated to 20°C without useful cooling. Determine a) the Coefficient of Performance of the cycle. For 15 TOR determine b) the power required by the compressor c) the heat rejected in the condenser d) volume flow rate at the suction.

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

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 9RQ: The approach temperature for the evaporator is A. the difference between the suction and head...

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