CARAIRCON.CO.UK

Some systems use a receiver drier and expansion valve, in these types of system the liquid refrigerant passes through the receiver to remove moisture, impurities and to separate gas bubbles from the flow. It then passes to the expansion valve which restricts the flow creating a cooling effect in the evaporator as the liquid evaporates due to the reduction in pressure. The expansion valve closes at about 2 deg C to stop ice formation inside the heater box restricting the airflow as moisture collects from the rapidly cooled air. The gas is then returned to the compressor via the larger of the two pipes for another cycle... All current vehicle air-conditioning systems work on a loop system with refrigerant being recirculated around it. The compressor is belt driven from the engine and compresses the refrigerant to a high pressure in gas form... On other systems the cooling effect is achieved by restricting the flow of liquid in the inlet pipe to the evaporator, the resultant drop in..

Primary location: United Kingdom