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aa8b HOT and COLD Attic ---How does it work? (part 3)

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Uploaded by on May 30, 2010

9:55 am The hotter it goes the faster it spins. Why? Hot air goes up and exits to this bad boy. With this aerodynamic design, no wind velocity is involved but with a temperature differential between the attic space and outside temperature that bad boy WILL SPIN... ... because of the law of Bernoulli. Then let's find out what happens again sometime these afternoon....???

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