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Old 06-30-2013, 06:10 AM   #8
wa8yxm
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The real swamp cooler is an evaporation cooler, you blow air through a filter that is kept damp either by wicking action or by a pump, or you blow air through a MIST of water. It is amazing the amount of energy needed to make water into vapor (or ice into water).

As to how does it cool the swamp. The "Swamp" (Pan of water) is what provides the cooling. In dry climates they are very effective.. Where I'm at (Dew point in the 70s this week) not so much.

They also humidify, so if you are in say Airzonia where it's hot and dry (Not all of the state qualifies) it is a double "Threat" to the weather, by evaporation of water it cools the room, AND raises the humidity both of which are needed.

Alas, here it would only raise humidity (I am in Michigan)
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