Evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems which use vapor-compression or absorption refrigeration cycles.
Evaporative cooling works by employing water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation), which can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants.
The power consumption is only 1/8 of the traditional air conditioner. Widely be used in internet cafes, base station, factory, supermarket etc.

18AP9 evaporative air cooler

Nature’s most efficient means of cooling is through the evaporation of water. Evaporative cooling works on the principle of heat absorption by moisture evaporation. It also happens on human skin, the body sweat to cool temperature down.  

• Standard unit evaporative air cooler
• 18000cmh airflow, suitable for 100~150sqm
• Down discharge type for roof, window and wall installation
• PP plastic cabinet, best quality
• Optional tempterature and humidity control function
• Variable speed by TRIAC

evaporative air cooler is not an air conditioner, as it does not use a compressor and Freon gas. We could not expect an Evaporative Cooler works as effectively as refrigerated air conditioner. However, compared with air conditioner the advantages of the Evaporative Air Cooler are:

• Low purchasing cost
• Low power consumption
• Low installation cost
• Low maintenance cost
• Green, energy-saving, eco-friendly
• Windows and doors can be kept open
• Multifunctional: Air cooling, ventilation, humidification, purifier
• Widely used in indoor and outdoor applications