Definition: Evaporative Cooling

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Evaporative Cooling

An evaporative cooler is a device that cools air through the evaporation of water. 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. Evaporative cooling requires a water source, and must continually consume water to operate.[1]




References
  1. http://en.wikipedia.org/wiki/Evaporative_cooler