Understanding Evaporative Air Coolers

How does an evaporative air cooler work?

The air cooler mainly uses the principle of water evaporation and heat absorption to achieve cooling. There is a layer of water cooling pad inside it, and the water in the water tank is transported to the cooling pad through a water pump to keep the cooling pad moist. When the fan is started, the outside air is sucked into the air cooler, and the water evaporates through the moist cooling pad to absorb the heat in the air, thereby lowering the air temperature, and then the cooled air is blown into the room to achieve the purpose of cooling.

Structure of air cooler

Cooling pad: usually made of materials with strong water absorption and high evaporation efficiency, such as paper, fiber or plastic materials, etc. Its function is to provide a large surface area for water evaporation, so that the air and water are fully in contact for heat exchange.
Fan: generally uses an axial flow fan or a centrifugal fan, which is responsible for sucking the outside air into the air cooler and blowing the cooled air into the indoor space to achieve air circulation and circulation.
Water tank: used to store circulating water and provide a continuous water source for the cooling pad. The water tank is usually also equipped with a water level control system to ensure that the water level is within the appropriate range to ensure the normal operation of the air cooler.
Water pump: extracts water from the water tank and transports it to the top of the cooling pad so that the water can be evenly sprayed on the cooling pad to form a uniform water film and achieve a good evaporative cooling effect.