Effect of liquid-line subcooling on refrigeration performance (vapor-compression cycle) How does subcooling of the condenser outlet liquid affect the cycle's coefficient of performance (C.O.P.)? Choose the correct option.
Mechanical Engineering
Heat Transfer, Refrigeration and Air Conditioning
Difficulty: Easy
Choose an option
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Adoes not alter C.O.P.
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Bincreases C.O.P.
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Cdecreases C.O.P.
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Dnone of these
Answer
Correct Answer: increases C.O.P.
Explanation
ApproachSubcooling increases the refrigerating effect (more liquid enthalpy drop through the evaporator) without increasing compressor work significantly.
ResultNet effect is a higher refrigeration effect per unit work, so the C.O.P. increases.