Clarkson University Visser Turbine

On 14 June the Adirondack Explorer reported that two small ducted wind turbines have been installed in the Adirondack Mountains … Read more

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NREL’s field test report on Renewable Devices Swift in 2011 can be found here: Power Performance Test Report for the … Read more

The turbine, which whirls on Outer Main Street across from Maxcy Hall, was engineered by Ducted Wind Turbines, founded by Clarkson professor Kenneth Visser.

Elser said the scam was years in the making and a working ducted wind turbine prototype was never built. Instead, Davis and Ridings misrepresented engineers’ opinions about the concept to scam investors and divvied up their money with a third man, Cody Fell of Springdale. They used their ill-gotten gains for personal expenses such as houses and cars, Elser said.

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I’ve received a portion of Intertek’s 2016 power performance test of Ogin’s Model 2.2 150-kW ducted wind turbine “over the transom” as we say. The much hyped and controversial device delivered its rated power in the test.

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The US Department of Energy (DOE) announced 19 November 2019 that the Distributed Wind Competitiveness Improvement Project had awarded a grant to Ducted Turbines of Potsdam, New York for nearly $200,000.

According to the complaint, Stimm raised more than $3.5 million from 435 investors in WNY over the years, utilizing illegal sales and false and misleading statements.

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Despite its previous association with a questionable wind turbine and its promoter, Clarkson University announced that the school in upstate New York has transferred ducted wind turbine technology developed on campus to a private company for commercialization.

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I am writing this now to close the book on this sad little turbine and the whole “let’s put them on the roof” phenomenon. Stumbling across an obscure NREL field test report from long ago (see Power Performance Test Report for the SWIFT Wind Turbine) dredged up this dark period in small wind turbine development.

Sheerwind makes radically inappropriate comparisons between their long-disproven approach to wind generation and actually useful wind generation. The numbers show that they are likely about eighteen times worse at generating electricity from moving air than a truly equivalent wind turbine would be, and will require an order of magnitude more material to achieve that.