Consider the following Vapor-Compression Heat Pump cycle which uses R-134a as the refrigerant. The isentropic efficiency of the compressor is 90%. The mass flow rate of refrigerant is 5 kg/min. Some properties for the states are given below.
Consider the following Vapor-Compression Heat Pump cycle which uses R-134a as the refrigerant. The isentropic efficiency of the compressor is 90%. The mass flow rate of refrigerant is 5 kg/min. Some properties for the states are given below.
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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Determine:
a)Work of the compressor(kW)
b)COP of the cycle
Transcribed Image Text:Consider the following Vapor-Compression Heat Pump cycle which uses R-134a as
the refrigerant. The isentropic efficiency of the compressor is 90%. The mass flow rate of
refrigerant is 5 kg/min. Some properties for the states are given below.
3
2s, 2
Condenser
Throttling
Compressor
Device
Evaporator
1
Enthalpy (kJ/kg)
Entropy (kJ/kg-K)
Pressure (bar)
2 bar
9 bar
9 bar
9 bar
2 bar
State
Notes
1
Saturated vapor
2s
272.4
0.9253
0.3656
Saturated liquid
4
99.56
0.3865
2.
3.
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