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Evaporative Cooling

How it works.

 

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In an evaporative cooler a circulation pump keeps the cellulose filter pads fully soaked. As warm air passes over wet filter pads water naturally evaporates into the air. The air is cooled as it gives up the heat required to evaporate the water. This can give over 80C of cooling on a hot day in the UK.

These coolers are used to provide a source of cooled air as part of a balanced ventilation system

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In the UK during a typical hot period the ambient temperature approaches 300C. This coincides with a Relative Humidity of under 50%. As the air passes over the pads it will typically cool down to about 220C. There is less cooling in the night as the temperatures reduce and the humidity rises.