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How does the air conditioner use the heat exchanger

How does the air conditioner use the heat exchanger

Update Time:2020/9/23

How doe sthe air conditioner use the heat exchanger?

The air conditioner transfers the heat of the indoor space to the outdoors. Refrigerant is one of the main chemicals that this process relies on. When the refrigerant changes from a gas to a liquid and returns again in the cooling process, the refrigerant will carry, absorb and release heat.


1. In air conditioners, refrigerant flows through various components and moves heat with them.

2. The refrigerant starts as a low-pressure liquid in the evaporator coil.

3. The fan blows the indoor air to the coil through the coil. As the refrigerant absorbs the heat in the air, the refrigerant turns into vapor to cool the room.

4. Now, the refrigerant is a kind of low-pressure heating, which enters the compressor (usually located outdoors) and is converted into high-pressure hot gas in the compressor.

5. The refrigerant enters the condenser and usually also enters the condenser.

6. When the air flows through the condenser, it will take away the heat in the refrigerant, so that the refrigerant becomes a high-pressure coolant again.

7. The refrigerant will be further cooled in the expansion valve and then return to the evaporator to absorb more heat and carry it out of the building.

Although the entire air conditioning unit can be regarded as a heat exchanger between indoor and outdoor spaces, the condenser is the part responsible for heat transfer in the air conditioner.

A heat exchanger is a device that transfers heat energy from one medium to another. Heat exchangers not only help with cooling and heating of houses and buildings, but also help machines and engines work more efficiently.