A refrigerator runs on the vapor compression cycle, using HFC-134a as a refrigerant. The boiler operates at
Question:
A refrigerator runs on the vapor compression cycle, using HFC-134a as a refrigerant. The boiler operates at 20°F. The effluent from the condenser is 10°F above ambient temperature. The compressor has an efficiency of 80%. Find each of the following:
∎ the temperature and pressure of the gas leaving the compressor
∎ the fraction of vapor in the stream leaving the expansion valve
∎ the coefficient of performance the mass flow rate of refrigerant needed to attain 10 kJ/s of cooling
A. The ambient temperature is 70°F.
B. The ambient temperature is 110°F.
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Step by Step Answer:
Step 1 Determine the saturation temperature of HFC134a at 20F From the HFC134a refrigerant property tables the saturation temperature at 20F is approximately 259F This means that HFC134a will condense ...View the full answer
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Related Book For 
Fundamentals Of Chemical Engineering Thermodynamics
ISBN: 9781111580704
1st Edition
Authors: Kevin D. Dahm, Donald P. Visco
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