Ducted & Shrouded Wind Turbines (DAWTs)

Like Vertical Axis Wind Turbines (VAWTs), shrouded and ducted wind turbines can be both small and large. However, they are not the mainstay of the wind industry and for that reason they are assigned a category under Small Wind Turbines on this site. Shrouded turbines are also sometimes called Diffuser-Augmented Wind Turbines (DAWTs).

There is also a collection of archival and recent photographs on the Photos section of this site. There you can find photos of Ducted Wind Turbines (DAWTs).

While ducted or shrouded wind turbines and Vertical Axis Wind Turbines can be of any size, they are listed here because they are outside the mainstream of the commercial wind industry.

Clarkson University Visser Turbine

Small Ducted Turbines on the March in New York

By

Paul Gipe

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

Swift At Nrel Jpg

Power Performance Test Report for the SWIFT Wind Turbine

By

Paul Gipe

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

SUNY Potsdam and Clarkson celebrate construction of new wind turbine

By

Mike Gagliardi

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

Man testifies he, other investors were scammed by Dragonfly in Elm Springs wind farm case

By

Ron Wood

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.

Palm Springs Trip 20160124 0007 800x1200

Power Performance Test on the Ogin 2.2 Ducted Wind Turbine Prototype

By

Paul Gipe

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.

Ken Visser Clarkson University Wind Turbine Jpeg

Ducted Turbines & Rooftop Mounting: Will These Ideas Ever Die? Not with DOE Doling Out Funding

By

Paul Gipe

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.

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