OKGK is right. This has to be a scam. Similar ideas have always run into the laws of physics wall. I myself have toyed with the idea of using a chute to squeeze air down so that you can get more out of smaller blades. Problem is as the larger opening of the chute drops in ratio to the smaller opening the efficiency INCREASES. It is more efficient to simply use a larger set of blades. No way their idea works because they will lose a disproportionate amount of energy moving air behind the turbine. And they're trying to extract energy out of the same air that has already moved through the front. No wonder they are so obscure on their proposal. Smoke and mirrors.
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