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Wind Turbine - Rooftop

Submitted by cybe on July 6, 2007 - 15:56

http://abc.net.au/news/stories/2007/06/27/1963676.htm?section=business A West Australian inventor believes he has developed a way to generate electricity for homes using wind power. Graeme Attey of Fremantle designed the concept which uses a modular wind turbine that is small enough to sit on a the roof of house.

Windaus Vertical Axis Wind Turbine

Submitted by cybe on November 18, 2005 - 13:40

via OSEN - http://www.opensourceenergy.org/C17/News%20Viewer/default.aspx?ID=1103

Windaus Energy Inc. has developed prototypes of a vertical-axis wind turbine and are looking for places to install working demos.

Earlier this year, Windhaus Energy Inc. announced prototypes of a new vertical-axis wind turbine. The device and its transmission system is said to be the first 3-vane helical concept. According to Windhaus, the design relies on torque rather than speed, and many benefits could be derived from this type of operation. The company has yet to complete any formal field-testing for commercial application, but some limited testing has been done. And it’s scoping out places to install working demos.

-- Charlee Redman (OSEN)

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From an announcement they sent out earlier this year:

Designed and manufactured by Windaus, this device and the attendant transmission system is the first three-vane helical concept to our knowledge. Some limited testing has been done by the company but no formal field-testing for commercial application has yet been completed.

The prototypes are mounted with the larger models on wheeled trailers.

The properties inherent to our design do not allow the outer edge of the vanes to exceed wind speed. They are virtually silent. They are not intimidating. The design relies on torque rather than speed, and many benefits are derived from this concept. Also, most of the "working parts" are housed at the base of the frame, facilitating easy maintenance and simple upgrades. Its operation mitigates many challenges facing conventional horizontal-axis turbines.

Specifications are available on their website, including output, torque, power output. As other people have pointed out, there are some disadvantages to this style of turbine, but there are also some advantages. It looks far more suitable for local micro power than mega wind farms.

Source: Slashdot comment by delfstrom on November 08, 2005

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Website:

http://windausenergy.com/

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