Discussion :: Refrigeration and Air Conditioning
- Which of the following statement is wrong?
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A.
The performance of the vapour compression refrigerator varies considerably with both vaporising and condensing temperatures. |
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B.
In vapour compression cycle, the useful part of the heat transfer is at the condenser. |
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C.
In ammonia-hydrogen (Electrolux) refrigerator, no compressor, pump or fan is required. |
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D.
The effect of under-cooling the liquid refrigerant is to decrease the coefficient of performance. |
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Answer : Option D
Explanation :
Subcooling in refrigeration implies cooling the refrigerant in liquid state, at uniform pressure, to a temperature that is less than the saturation temperature, which corresponds to condenser pressure.
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