![]() ![]() “This is a game-changer adding new value to the fast-growing rooftop power generation market, helping corporations meet their resilience and sustainability goals with an untapped distributed renewable energy source,” said Aeromine CEO David Asarnow in a press release. The spinning propeller is connected to a generator, which can be hooked up to a battery or connect directly to the building to provide electricity. As wind hits the airfoils, it creates a low pressure zone that sucks air through perforations and turns a propeller at the bottom of the unit. The generators sit on the edge of a building’s roof, taking advantage of the aerodynamic effect created by the wall below. Aeromines don’t have rotors or blades instead, they have two airfoils or “wings” shaped like spoilers, angled towards each other on either side of a pole. The latter use wind to turn blades attached to a rotor, and the spinning rotor powers a generator. ![]() ![]() Made by Aeromine Technologies, they harness wind and convert it to energy differently than conventional turbines. There are also small vertical-axis turbines large offshore vertical-axis turbines and now, rooftop wind generators that aren’t really turbines and don’t have an axis at all, at least not in the traditional sense. But wind energy isn’t limited to this classic design. The majority of the turbines making up that figure are the horizontal-axis variety (a rotor mounted at the top of a pole, blades twirling windmill-style). In 2021, wind turbines generated over 9 percent of US utility-scale electricity. ![]()
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