• gus@beehaw.org
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    11 months ago

    Swamp coolers.

    Fans blow over water to lower the pressure, causing evaporation to occur at room temperature.

    Evaporating water absorbs heat from its surroundings without raising the water’s temperature as it undergoes a phase change. It absorbs nearly 20 times more heat than it would from being heated from 50 degrees F to 100 degrees.