Homework Answers
the refrigerator can maintain its interior temperature of 5oC.
if the owner decides to put the refrigerator where the outside temperature is 20oC.
then COP of the refrigerator will be
(COP)1 = TL / ( TH - TL)
= ( 273 + 5 ) / ( 20 - 5 )
= 18.53
now if owner decides to put the refrigerator to the garage where average temperature is 10oC
then COP of refrigerator will be
(COP)2 = TL / ( TH - TL)
= ( 273 + 5 ) / ( 10 - 5 )
= 55.6
since (COP)2 
(COP)1 thus refrigerator will work efficiently when it is placed
in garage. thus owner should place refrigerator in garage.
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