Systems and controllers in industrial refrigeration
Refrigeration, the process of maintaining an enclosed space at a temperature lower than the surroundings, has wide application in various industries like food processing, power plants, hospitals, pharmaceuticals etc. as well as for commercial use like supermarkets etc. The 3 main methods of achieving refrigeration are cyclic, non cyclic and thermo electric, out of which cyclic method is the most common.
The major components of cyclic refrigeration systems are compressor, condenser, evaporator and expansion valve that correspond to compression, condensation, evaporation and expansion part of the thermodynamic cycle respectively.
The compressor compresses the refrigerant like Freon, ammonia, CO2 etc. and converts it from saturated state to superheated state. The compressors used in industrial refrigeration systems are of various types, centrifugal, reciprocating, screw, vane etc.
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