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Question

For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be:

A
high
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B
small
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C
zero
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D
equal
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Solution

The correct option is B small
COP of refrigerator =QHW=QHQHQC=THTHTC
For better COP of refrigerator ,the pressure range corresponding to temperature in evaporator an condenser must be small.

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