vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The isentropic compressor efficiency is 80 %. The mass flow rate of refrigerant is 7 kg/min. Sketch the process on a T-s diagram and determine; I) the compressor power, in kW Ii) the refrigeration capacity, in tons III) the coefficient of performance.

vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The isentropic compressor efficiency is 80 %. The mass flow rate of refrigerant is 7 kg/min. Sketch the process on a T-s diagram and determine; I) the compressor power, in kW Ii) the refrigeration capacity, in tons III) 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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A vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The isentropic compressor efficiency is 80 %. The mass flow rate of refrigerant is 7 kg/min. Sketch the process on a T-s diagram and determine; the compressor power, in kW the refrigeration capacity, in tons the coefficient of performance.
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A vapor compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exist the condenser at 8 bar. The isentropic compresser efficiency is 80%. The mass flow rate of refrigerant is 7 kg/min. Sketch the process on a T-s diagram and determine; i. the compressor power, in kW ii. the refrigeration capacity, in tons iii. the coefficient of performance
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