The cooling fan in a split air conditioner plays a crucial role in the cooling process by aiding in the circulation of air. A split air conditioner is composed of two main units: an indoor unit (evaporator) and an outdoor unit (condenser). The cooling fan is a part of the outdoor unit, and its primary purpose is to dissipate heat from the system.
Here's how the cooling fan of a split air conditioner works:
Heat transfer: The indoor unit absorbs warm air from the room and passes it over evaporator coils containing a refrigerant. The refrigerant absorbs the heat from the indoor air and evaporates into a low-pressure gas.
Compressor: The low-pressure gas is then compressed by the compressor in the outdoor unit. Compression increases the temperature and pressure of the refrigerant.
Condensation: The high-pressure, high-temperature refrigerant then flows through condenser coils in the outdoor unit. The cooling fan is responsible for blowing air over these coils. As the hot refrigerant passes through the condenser coils, it releases heat to the surrounding air, causing the refrigerant to condense back into a liquid state.
Expulsion of heat: The cooling fan ensures a continuous flow of outdoor air over the condenser coils, which facilitates the transfer of heat from the refrigerant to the outside environment. As a result, the refrigerant loses heat and cools down further.
Cycle continuation: The now-cooled and high-pressure liquid refrigerant moves back to the indoor unit, and the process repeats to cool the indoor air.
By continuously expelling heat from the condenser coils, the cooling fan helps maintain the efficiency of the air conditioning system and keeps the refrigerant at the appropriate temperature for the cooling cycle. The outdoor unit of the split air conditioner should have enough clearance and unobstructed space around it to ensure proper airflow for efficient cooling. Regular maintenance and cleaning of the cooling fan and the condenser coils are essential to ensure optimal performance and energy efficiency of the split air conditioner.