28 May '12, 9am

3,000' Tower Will Generate Clean Power from Hot Air and Cool Water

3,000' Tower Will Generate Clean Power from Hot Air and Cool Water

privatelands /Video screen capture This is an idea that's been around since it was patented by Phillip Carlson in 1975, but it's never been carried out. Now San Luis, Arizona, right on the US-Mexico border, is preparing to bring it to life: a 3,000 foot tall tower built to generate clean electricity from hot dry air and cool water, reported EcoFriend . The idea behind the downdraft energy tower is actually pretty simple, so long as the hollow structure is tall and in a hot, dry climate. At the top of the tower, air is sprayed with cool water, making it denser and heavier. The air travels downward through the tower, powering wind turbines that generate electricity. This (amusingly old school) video lays it out nicely: Since Carlon's patent, most of the work on this technology has been done by researchers at the Technion-Israel Institute of Technology , including Dr Ramu Gue...

Full article: http://www.treehugger.com/clean-technology/3000-tower-wil...

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