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The COP of a Carnot refrigeration cycle decreases on
  • a)
    decreasing the difference in operating temperatures
  • b)
    keeping the upper temperature constant and increasing the lower temperature
  • c)
    increasing the upper temperature and keeping the lower temperature constant
  • d)
    increasing the upper temperature and decreasing the lower temperature
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The COP of a Carnot refrigeration cycle decreases ona)decreasing the d...
It can be noted that the maximum possible Cofficient of Performance in any application can be obtained when:
(i) The cold body Temperature (Tc) should be as high as possible and
(ii) The hot body Temperature (Th) should be as low as possible.
Hence most effective way to increase the COP is by increasing the temperature of cold body and at the some time decreasing the temperature of hot body.
If opposite is done i.e., decreasing the temperature of cold body and increasing the temperature of hot body, COP of a Carnot refrigeration cycle decreases drastically,
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The COP of a Carnot refrigeration cycle decreases ona)decreasing the difference in operating temperaturesb)keeping the upper temperature constant and increasing the lower temperaturec)increasing the upper temperature and keeping the lower temperature constantd)increasing the upper temperature and decreasing the lower temperatureCorrect answer is option 'D'. Can you explain this answer?
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