PROBLEM 1 A vapor-compression heat pump system uses ammonia as working fluid. Saturated vapor exits the evaporator at 20°C, and saturated liquid leaves the condenser at 1400 kPa. The isentropic compressor efficiency is 80%. Questions: Determine: (a) The heat transfer in the evaporator and in the condenser. (b) The compressor work. (c) The Coefficient of Performance.

PROBLEM 1 A vapor-compression heat pump system uses ammonia as working fluid. Saturated vapor exits the evaporator at 20°C, and saturated liquid leaves the condenser at 1400 kPa. The isentropic compressor efficiency is 80%. Questions: Determine: (a) The heat transfer in the evaporator and in the condenser. (b) The compressor work. (c) The Coefficient of 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

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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