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As humidity is dependent on temperature, wind and other factors, these factors affect evaporation too. There are a multitude of factors, including relative humidity, that govern the process of evaporation whether it is occurring at a small laboratory or over the surface of a huge water body like a lake or ocean.
An evaporative cooler, swamp cooler, desert cooler, and a wet air cooler cools air through the simple process of the evaporation of water. Evaporative cooling works by utilizing water vaporization.n evaporative cooler is really just a large fan that blows air through water soaked pads producing a cooling affect. The fan pulls hot outside air through the pads and into the cooler and blows the cooled air out.