Question

? In a simple saturated vapour
compression refrigeration cycle,
the following results were
obtained. Heat rejected in
condenser = 140 kJ/kg;
compression work 28 kJ/kg. The
COP refrigeration is:​

Answer 1

Answer:

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Answer 2

Answer:

The COP refrigeration is:​ 4

Explanation:

Heat rejected into the condenser = Heat absorbed in to the evaporator + Work input to the compressor

Coefficient of performance = Desired effect ( Heat absorbed in to the evaporator) / Work input to the compressor

Given Heat rejected into the condenser = 140 kJ/kg

Work input to the compressor = 28 kJ/kg

Heat absorbed by refrigerant in the evaporator = 140 - 28 = 112 kJ/kg

Now, COP = 112 / 28

                  = 4