Location
Sharjah, U.A.E
The lower the temperature of the air, the less moisture it can contain. At 20°C, the maximum amount of water per kilogramme of dry air would be 14.7 grammes. At 5°C, the maximum amount of water per kilogramme of dry air is just 5.4 grammes.
Consider air at a temperature of 20°C with a relative humidity of 69 percent and an absolute humidity of 10 grammes per kilogramme of dry air. As the air cools, it reaches the dew point at 14°C, at which point it contains its greatest amount of water vapour. If the air is then cooled to a temperature of 5°C, a total of 5 grammes of water per kilogramme of dry air condenses out.
A fan or blower forces the air to be dehumidified over a cold surface composed of multiple plates onto which water condenses and drops into a condensate collection container.
The cooling plates are kept at a low temperature via a closed cooling circuit operating on the heat pump principle. The cooled and dehumidified air is then warmed again in the condenser, where the warmer air can absorb moisture from the surrounding environment. Condensation dehumidifiers are recommended in particular for applications with high relative humidity and moderate to high temperatures, such as indoor swimming pools.
