A split air conditioning system, as the name suggests, consists of two main components: an indoor unit and an outdoor unit. Each unit serves a different purpose, and the system utilizes two fans to facilitate the cooling process effectively. Here's why a split AC has two fans:
Indoor Unit Fan: The indoor unit of a split AC is installed inside the room you want to cool. It contains the evaporator coil, which is responsible for absorbing heat from the indoor air. The indoor unit fan is located behind the evaporator coil and circulates the warm indoor air over the evaporator. As the air passes through the evaporator coil, the heat is absorbed, and the air is cooled before being recirculated back into the room. The indoor unit fan's role is to ensure efficient heat exchange and distribute the cool air throughout the room.
Outdoor Unit Fan: The outdoor unit of a split AC is installed outside the building or room being cooled. This unit contains the condenser coil and a compressor. The condenser coil releases the heat collected from the indoor air to the outside environment. The outdoor unit fan is positioned to blow air over the condenser coil, aiding in the heat dissipation process. As the outdoor fan pulls air over the condenser coil, it helps remove the heat absorbed from the indoor air, allowing the refrigerant inside the AC system to cool down and be ready for another cycle of heat exchange.
In summary, the two fans in a split AC work in tandem to facilitate the heat exchange process. The indoor unit fan circulates warm indoor air over the evaporator coil to cool the air, while the outdoor unit fan blows air over the condenser coil to release the collected heat to the outside environment. This efficient heat exchange is what allows a split AC system to cool indoor spaces effectively.