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The refrigerant flow in the cooling system of the York propane compressor is such that the cooling system uses the latent heat of vaporization of the refrigerant (propane) to cool the incoming air. The refrigeration unit contains a refrigerant flow used for cooling, with the refrigerant being continuously supplied to the inlet. The following schematic diagram illustrates the refrigerant flow in the refrigeration unit. ① During the evaporation process, the liquid refrigerant at low temperature and low pressure is injected into the shell side of the evaporator, where it exchanges heat with the incoming air and loses moisture, thereby forming gaseous refrigerant at low temperature and low pressure. ② The pressurization process removes fine contaminants from the low-temperature, low-pressure gaseous refrigerant using a suction filter. The gaseous refrigerant drawn into the compressor is a high-pressure gaseous refrigerant. (The discharged gaseous refrigerant) The discharged gaseous refrigerant is mixed with lubricating oil so that it can be separated in an oil separator, after which the gaseous refrigerant is sent to an air-cooled condenser. ③ During the condensation process, the high-pressure gaseous refrigerant is supplied to the tube side of the air-cooled condenser, where it exchanges heat with the cooling air flowing through the shell side, as well as with the gaseous and liquid refrigerant. ④ During the expansion process, high-pressure liquid refrigerant is supplied from the accumulator to the expansion valve. The expansion valve reduces the pressure of the liquid refrigerant, which is then delivered to the evaporator as cold, low-pressure liquid refrigerant. Except in the above cases, for the small amount of intake air that is needed to maintain the suction pressure of the compressor, the suction pressure buffer tank of the liquid refrigerant compressor is connected to the receiver via a bypass (hot gas bypass). Refrigeration units, refrigerant pipelines, etc., form a closed loop composed of their essential components. Refrigerant flow in the refrigeration system of the York propane compressor