Superheating

Overheating

Overheating is to increase the temperature of the refrigerant above the boiling point. The higher suction gas superheat, the lower the density of the gas and, respectively, the lower the compressor mass flow rate. This reduces the productivity of the compressor without reducing its energy consumption, increase in operating costs.

Overheating can be resumed, doing useful cooling or in the suction piping from the evaporator to the compressor. To some extent, overheating, is a necessary evil to prevent ingress of liquid refrigerant in the compressor. The advent of electronic expansion valves helped to minimize overheating, without the risk of ingress of liquid refrigerant. The suction line must always be isolated to minimize overheating...

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Overheating