The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?
Correct answer: B. More pronounced
- A. Less pronounced
- B. More pronounced
- C. Equal
- D. Data insufficient, can't be predicted
Explanation
For an ideal vapour-compression cycle, COP is approximately proportional to evaporator temperature divided by the difference between condenser and evaporator temperatures. Raising evaporator temperature therefore improves COP more strongly than lowering condenser temperature by the same amount.
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