Living in Arizona, I am very familiar with evaporative (swamp) coolers. They work very well, IF the relative humidity is 40% or below. They work on constant air exchange, so if you put one in the middle of an enclosed space, it will only work for a few minutes, until it raises the humidity above 40%. They must take outside air and blow it into the area to be cooled, through the water saturated pads. There must be another opening in the cooled area to allow the air to escape. On a house, that means you turn on the cooler on the roof and open a few windows. A vehicle isn't the best place for them, but on a house, a good sized one will push 5000 CFM of air into the house, and cool it as much as 40 degrees (f). The only electricity used is running the fan, so they cost MUCH less to operate than refrigeration (what you Easterners call "air conditioning"). Bill (SE Arizona) (Bill@freeholder.com) HTTP://www.freeholder.com ---------------------------------------------------------- Censorship is the assassination of ideas. No matter how well-meaning its proponents may be, they are more dangerous to us than any outside enemy. |
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