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I nearly flunked thermodynamics in college, so take this as the harebrained scheme/Burning Man hack that it would be.

But I've wondered if you could get a useful amount of cooling/greywater disposal/hot clean water supply by mounting a wind-powered vacuum pump on top of a tall (11m +) column of water so that the water in the column would boil at ambient temperature.



It turns out that water boils quite slowly at room temperature and low pressure, so you’d need a very large surface area.




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