Refrigeration & Equipment Engineering

Unit 3 - Parts of refrigeration systems

3.1.Compressor
The compressor is referred to as the heart of mechanical refrigeration systems. The compressor is used to compress the vapour refrigerant coming from the evaporator and to raise its pressure and temperature more than that of the cooling medium. It also continuously circulates the refrigerant through the refrigerating system. Since the compression of refrigerant requires some work to be done on it, therefore a compressor must be driven by some prime-mover.