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The coefficient of performance (COP) for a refrigerator is the rate of heat flowing into the refrigeration unit (heat into the evaporator) divided by the shaft work entering the compressor. The COP is therefore a:a) Percentage, between 0 and 100%.b) Dimensionless number that must be greater than one (or, ideally, equal to one)c) Dimensionless number that in reality rarely deviates from one by more than a few percent.d) Dimensionless number that can be less than one, or greater than one.e) Dimensional number that depends on the mass flow of refrigerant and specified units (e.g., English units such as BTU/hr)

The coefficient of performance (COP) for a refrigerator is the rate of heat flowing into the refrigeration unit (heat into the evaporator) divided by the shaft work entering the compressor. The COP is therefore a:a) Percentage, between 0 and 100%.b) Dimensionless number that must be greater than one (or, ideally, equal to one)c) Dimensionless number that in reality rarely deviates from one by more than a few percent.d) Dimensionless number that can be less than one, or greater than one.e) Dimensional number that depends on the mass flow of refrigerant and specified units (e.g., English units such as BTU/hr)

Elements Of Electromagnetics
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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 The coefficient of performance (COP) for a refrigerator is the rate of heat 
flowing into the refrigeration unit (heat into the evaporator) divided by the 
shaft work entering the compressor. The COP is therefore a:
a) Percentage, between 0 and 100%.
b) Dimensionless number that must be greater than one (or, ideally, equal 
to one)
c) Dimensionless number that in reality rarely deviates from one by more 
than a few percent.
d) Dimensionless number that can be less than one, or greater than one.
e) Dimensional number that depends on the mass flow of refrigerant and 
specified units (e.g., English units such as BTU/hr)

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