... 9 stand 9D03 ) , 16-19 november 2010.Evaporative Air Cooler uses special Evaporative Cooling pads, which are kept wet by wet ... freon piping out. the air cooler need water. (The working therory: Evaporative air cooler uses special evaporative cooling pads, which are ... And for the same space area, compearing with traditional compressor air-conditioner, 90% power consumption can be reduced. Besides, this ...