NASA windmill at Plum Brook faces design and cost hurdles
NASA's Plum Brook wind turbine, a 100 kilowatt prototype costing about 1 million dollars, has operated less than 30 hours since installation. Experts cite high capital cost about 10,000 per kilowatt, reliability issues, and wind speed needs, with NASA planning a 1.5 megawatt follow up and two smaller Plum Brook installations while redesigns for blades and tower are tested.
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Wind power at Wisconsin home sparks debate on future energy
Rep Henry Reuss touts a 72 foot yellow wind turbine at his North Lake Wisconsin summer home. The 2 kilowatt generator feeds his home and ties to the utility grid via a Gesmini synchronous inverter. He argues wind energy is clean inexhaustible and could meet a growing share of U S electricity by 2000, despite a high upfront cost of about five thousand dollars.
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Wind forces at Chicago tall buildings studied by IIT professors
In Chicago winds around skyscrapers threaten pedestrians and structures. Two IIT professors Andrew Fejer and Hasan Najib model wind flow in a lab wind tunnel to predict pressure and turbulence and propose remedies such as slotted fences canopies and spaced buildings. They hold a $130,000 NSF grant and aim to design safer building layouts.
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