A vapor compression refrigeration cycle uses refrigerant-134a as its working fluid. The condenser pressure is 800 kPa and the evaporator temperature is -20 C. The compressor has an isentropic efficiency of 80 percent. The mass flow rate is 1.0493 kg/s. The enthalpy at the isentropic exit state of the compressor is h2s = 271.9 kJ/kg. In the question that follows, select the answer that is closest to the true value. What is the power going to the compressor in units of kW?

A vapor compression refrigeration cycle uses refrigerant-134a as its working fluid. The condenser pressure is 800 kPa and the evaporator temperature is -20 C. The compressor has an isentropic efficiency of 80 percent. The mass flow rate is 1.0493 kg/s. The enthalpy at the isentropic exit state of the compressor is h2s = 271.9 kJ/kg. In the question that follows, select the answer that is closest to the true value. What is the power going to the compressor in units of kW?

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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