Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in__________________?
Correct answer: B. Increased COP
- A. Same COP
- B. Increased COP
- C. Decreased COP
- D. Increased or decreased COP; depending upon the type of refrigerant
Explanation
For fixed evaporator temperature, lowering condenser temperature reduces the compressor pressure ratio and compressor work while maintaining the refrigeration effect approximately. Therefore, the COP increases.
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