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Ridgeblade

 
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Hairyloon



Joined: 20 Nov 2008
Posts: 14477
Location: Today I are mostly being in Yorkshire.
PostPosted: Fri Oct 21, 16 11:41 pm    Post subject: Ridgeblade  Reply with quote    

Quote:
Designed to use the existing roof area of a pitched roof to collect and focus the prevailing wind using the Aeolian wind focus effect. This is where the wind is forced to travel over the roof surface and forms a pinch point at the roof ridge, accelerating the airflow though the turbine. As a result, measured wind speed around the ridge can be just over three times the actual wind speed. Placing the turbine in this high flow area means that up to nine times the energy is available to it compared to a HAWT (Horizontal Axis Wind Turbine) system.


http://www.ridgeblade.com/

dpack



Joined: 02 Jul 2005
Posts: 32466
Location: yes
PostPosted: Sat Oct 22, 16 12:42 am    Post subject: Reply with quote    

it seems quite site specific but if it puts out as much as they claim and is low maintenance etc it would be an option in some places . it seems a bit low power for fully off grid supply but along with pvs it might make a full adequate power station on the roof a bit easier to retrofit .

im a bit thoughtful about the low noise claim or mention of rumble or how much metal you need to hold the thing on the roof .i recon i would want to meet one running on a similar structure before getting one fitted. For instance i can make buildings shake with nowt but a hollow tree with a zebra skin strapped on one end , resonance can be a rather disturbing effect and iirc has been a major problem with other turbines on roofs .

Hairyloon



Joined: 20 Nov 2008
Posts: 14477
Location: Today I are mostly being in Yorkshire.
PostPosted: Sat Oct 22, 16 8:46 am    Post subject: Reply with quote    

dpack wrote:
resonance can be a rather disturbing effect and iirc has been a major problem with other turbines on roofs .

True enough, but once you've found the resonant frequency of the building, it is not rocket surgery to avoid running at that speed.

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