How Indoor Cassette Unit Evaporator Works?

How Indoor Cassette Unit Evaporator Works?

An indoor cassette unit evaporator is a key component of a ceiling-mounted air conditioner that absorbs heat from a room to cool the air. It consists of coils filled with refrigerant that, as it flows through, turns from a liquid to a gas, absorbing heat in the process. This cooled air is then distributed back into the room by the unit's fan and louvers.

How it works

Heat absorption: Warm indoor air is drawn into the cassette unit, passes through an air filter, and then moves over the evaporator coils.

Refrigerant phase change: As the air passes over the coils, the liquid refrigerant inside them absorbs the heat and evaporates, changing into a gas.

Cool air distribution: The fan blows the now-cooled air across the coils and pushes it back into the room through the unit's vents.

Refrigerant cycle: The gaseous refrigerant then travels to the outdoor unit's compressor, where it is compressed and condensed, releasing the absorbed heat outside.

Key functions and components

Cooling: The primary function is to cool the air by absorbing heat from the room.

Evaporator coils: These are the part of the system that the refrigerant flows through to absorb heat.

Fan: A blower fan within the unit is responsible for moving the air over the coils and distributing it into the room.

Air filter: Filters clean the air as it is drawn into the unit before it passes over the coils, removing dust and debris.