What Is The Evaporator Coil in The Cassette AC Unit

The evaporator coil in the cassette AC unit is a key component in the air - conditioning system, mainly used to cool and dehumidify the air.

Structure

The evaporator coil is usually made of copper tubes with good thermal conductivity, which can effectively transfer heat. It is often equipped with fins to increase the heat exchange area and improve the heat exchange efficiency. These fins are usually made of aluminum or other metal materials with good heat dissipation performance.

Working principle

In the refrigeration cycle, the low - pressure liquid refrigerant enters the evaporator coil. As the refrigerant flows through the coil, it absorbs heat from the surrounding air and evaporates into a gaseous state. This process reduces the temperature of the air passing over the coil, thereby achieving the purpose of cooling the air. At the same time, when the warm and humid air comes into contact with the cold surface of the evaporator coil, water vapor in the air condenses into water droplets, which are discharged through the condensate drain system, thus achieving the effect of dehumidification.

Function

Cooling the air: It absorbs the heat from the indoor air to lower the air temperature and achieve the cooling effect in the room.

Dehumidifying the air: By condensing the water vapor in the air, it reduces the humidity of the indoor air, improving the comfort of the indoor environment.

Impact on the performance of the air - conditioning system

If the evaporator coil is dirty or blocked, its heat exchange efficiency will decrease, resulting in poor cooling effect, high energy consumption of the air conditioner, and even abnormal operation. In addition, refrigerant leakage in the evaporator coil will also affect the refrigeration cycle, resulting in insufficient cooling capacity and increased power consumption.