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?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

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?

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