Heating and Air Conditioning: Description and Operation

A/C Refrigeration Cycle:

1. The compressor discharges high temperature and high pressure refrigerant that contains the heat absorbed from the evaporator plus the heat created by the compressor itself.
2. The gaseous refrigerant flows into the condenser at which point it condenses into liquid refrigerant.
3. The liquid refrigerant flows into the receiver which stores and filters the liquid refrigerant until it flows into the evaporator.
4. Upon entering the expansion valve, the liquid refrigerant changes into a low temperature, low pressure liquid and gaseous mixture.
5. The mixture flows to the evaporator. Vaporizing the liquid in the evaporator, the heat from the warm air stream passing through the evaporator core is transferred to the refrigerant. All of the liquid changes into a gaseous refrigerant in the evaporator and only heat-laden gaseous refrigerant is drawn into the compressor. Then, the process is repeated again.