A condenser of a refrigeration system rejects heat at a

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A condenser of a refrigeration system rejects heat at a rate of 120 kW, while is compressor consumes a power of 30 kW. The coefficient of performance of the system would be

1. 1
  4
2. 4
3. 1
  3
4. 3

Correct Option: D

Q₁ = 120 kW , W = 30 × kW , Q₂ = 120 – 30 = 90kW

(COP)_ref =	Q₂	=	90	= 3
	W		30