Car Air Conditioner

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Compressor

Low-temperature, low-pressure gas refrigerant that has been vaporized in the evaporator through the extraction of heat from the vehicle interior is suctioned and compressed by the compressor. The compressor then sends a high-temperature, high-pressure gas to the condenser that can be readily liquefied. The car A/C system compressor is driven by a belt from the engine and a magnetic clutch

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Condenser

The condenser consist of a tube and fin, and is installed in front of the radiator.

The condenser employs a cooling fan or another method to cool the high temperature, high pressure gaseous refrigerant compressed by the compressor.

This changes the gaseous refrigerant to a high temperature, high pressure liquid (liquid mixed with some gas) refrigerant.

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Evaporator

The evaporator vapourizes the low temperature, low pressure mist refrigerant supplied by the expansion valve, thereby cooling the air around the evaporator.

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Expansion valve

The expansion valve serves two functions:
- After passing through the receiver, the high temperature, high pressure liquid refrigerant is ejected from the orifice. This results in rapid expansion that changes the refrigerant to a low temperature, low pressure mist refrigerant.
- The expansion valve adjusts the volume of refrigerant supplied to the evaporator, according to the thermal load automatically. Press a button to study the box type expansion valve and conventional expansion valve operation.