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.
New York Attorney General blocks WNY “wind turbine inventor” from using investor funds for personal use
By
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.
Clarkson Attempts Ducted Turbines—Again
By
Paul Gipe
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.
Small Vindication: Renewable Devices Swift Ducted Rooftop Turbine Gone
By
Paul Gipe
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 Invelox: all hype, no substance
By
Mike Barnard
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.
Business Day: Super DAWT investment winded by critics
By
Matt Nippert
A wind energy firms’ claims it will revolutionise wind power have been questioned by critics following a US$55 million investment in it by the New Zealand Superannuation Fund.
FloDesign-Ogin Some Brief Comments
By
Paul Gipe
The following is an excerpt from my forthcoming book, Wind Energy for the Rest of Us. It is provided here …
