Refrigerant 134a is the working fluid in an ideal vapor-compression refrigeration cycle operating at steady state. Refrigerant enters the compressor at 1 bar, -12°C, and the condenser pressure is 9 bar. Liquid exits the condenser at 32°C. The mass flow rate of refrigerant is 4 kg/min. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigeration capacity, in tons. (c) the coefficient of performance.

Refrigerant 134a is the working fluid in an ideal vapor-compression refrigeration cycle operating at steady state. Refrigerant enters the compressor at 1 bar, -12°C, and the condenser pressure is 9 bar. Liquid exits the condenser at 32°C. The mass flow rate of refrigerant is 4 kg/min. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigeration capacity, in tons. (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

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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