To
make some ice, a freezer extracts 185 kJ of
heat at
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Solution: Click For PDF Version
The amount of
heat extracted from the freezer,
Coefficient of performance of a refrigerator,
As the coefficient of performance of the freezer is 5.70, we find that the mechanical work done on the freezer will be
Therefore,
the amount of heat delivered to the room will be
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.
The freezer has a coefficient of performance of 5.70.
The room temperature is
.
(a) We have to find the amount of heat that
was delivered to the room; and (b) the
work required for running the freezer.
