A refrigerator maintains the freezer compartment at -10°C when the air surrounding the refrigerator is at 25°C. The rate of heat transfer from the freezer compartment to the refrigerant is 10000 kJ/h and the power input required to operate the refrigerator is 1.5 hp. ● Determine the coefficient of performance of the refrigerator. ● Compare with the coefficient of performance to a Carnot refrigeration cycle operating between reservoirs at the same two temperatures.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.46P
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A refrigerator maintains the freezer compartment at -10°C when the air surrounding the refrigerator is at 25°C.
The rate of heat transfer from the freezer compartment to the refrigerant is 10000 kJ/h and the power input
required to operate the refrigerator is 1.5 hp.
● Determine the coefficient of performance of the refrigerator.
●
Compare with the coefficient of performance to a Carnot refrigeration cycle operating between
reservoirs at the same two temperatures.
Transcribed Image Text:A refrigerator maintains the freezer compartment at -10°C when the air surrounding the refrigerator is at 25°C. The rate of heat transfer from the freezer compartment to the refrigerant is 10000 kJ/h and the power input required to operate the refrigerator is 1.5 hp. ● Determine the coefficient of performance of the refrigerator. ● Compare with the coefficient of performance to a Carnot refrigeration cycle operating between reservoirs at the same two temperatures.
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