Interpretation:
The power required by the compressor is to be calculated if heat exchanger is used and the result is to be compared with the system that operates without the heat exchanger. Also, the refrigerant circulation rate for the two cases needs to be compared.
Concept introduction:
Below shown diagram represents vapor-compression refrigeration cycle on a
The line
The equations used to calculate the heat absorbed in evaporator and the heat rejected in condenser are:
The work of compression is:
The coefficient of performance is:
The rate of circulation of refrigerant,
For Carnot refrigeration cycle, highest possible value of
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