How does a condenser work in an air conditioning unit?
The condenser is the high-pressure equipment of the system when the outdoor heat exchanger is cooling (the cold and warm heat pump type is the low-pressure equipment in the heating state), and it is installed between the exhaust port of the compressor and the throttling device (capillary or electronic expansion valve). The high-temperature and high-pressure gas (Freon) discharged from the air-conditioner compressor enters the condenser and is cooled by copper tubes and aluminum foil. The air-conditioner is equipped with an axial-flow cooling fan. The air-cooled fan is used to make the refrigerant During the cooling and condensation process, the pressure is constant and the temperature is reduced, and the gas is converted into a liquid.
The process of refrigerant change in the condenser can theoretically be seen as an isothermal process. In fact, it has three functions. First, the air takes away the overheated part of the high-temperature air-conditioning refrigerant gas sent by the compressor, making it a dry saturated vapor; second, it liquefies at a constant saturation temperature; When the air temperature is lower than the condensing temperature, the liquefied refrigerant is further cooled to the same temperature as the ambient air and serves to cool the air.