Is this a new windmill concept ? i just drew it up
http://img81.imageshack.us/img81/5528/windpx0.jpg
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just to let you guys know, the purpose of the wind shield is to get the maximum amount of wind to hit a key area at 90 degrees straight on. Reducing the wind resistince for the lower half of the wind caching fins. Kind of like a swamp cooler. the bottom half of the shield would be curved down producing low pressure pulling the falling fins down. This concept is kind of like a planes wings producing life yet instead of lift it would cause the turbine to spin up and over and down and back up fast! 8) what do you think ???
The returning blade will still offer resistance......a good idea though.
i like it
here is a more better one that i just made up check it out
http://img396.imageshack.us/img396/6391/windbarrelhr7.jpg How do you post a picture by the way? not a link
the bottom of the shield produces a Venturi effect downwards, i wonder if this wind turbine is more practical than a windmill
???
It looks possible and sort of like the Coanda effect. I think if you place ribs on the incline side of your
leading air foil you would cut down on surface resistance between the incoming air stream and the surface of flat plate that is forcing the air up into the blades. Air will cavitate in the ribs allowing the incoming air flow to slide over the cavitating swirls in the ribs with very little drag as compared to air passing over a smooth flat surface. Surface tension is good for blades not for channeling flows. You can examine the effect with how an open tail gate on a pick up truck actually reduces gas millage.
I use the same properties in the application of thermal emissive coatings a rate of 3 to 1 to increase cooling effeciencies with a highly reduced drag compared to smooth surfaces. The cooling wont help you but the lower drag on the incline foil will greatly improve your use of the lower wind speeds.
Of course if you want to get fancy or complicated you could make use of the incline plate for a heat sink/ heat pump with peltiers and a joule thief to add temperature stability to your gen. Keeping things simple usually wins in the end.
Nice concept. I wonder if you could incorporate it into a VAWT design. Check the windmills out on this page.
http://www.platek.com/wind/verticals.html
Thats is a good use of the convection uplift off the home roof top to aid the wind gen.
Waste not want not.
Pretty sporty looking too hit it with 3 different color lights form three different positions and it would be eye catchy on top of a commercial building or apartment high rise. Shame they are not better at promoting themselves.
Haliburton
I just noticed your picture icon thing ,thats pretty funny.
Ok, so i just incorporated you turbine into my design take a look at the links 8)
http://img353.imageshack.us/my.php?image=shield333gooddl5.jpg
http://img440.imageshack.us/my.php?image=wind11111111ma7.jpg
http://img72.imageshack.us/my.php?image=sheild2eq5.jpg
Your design looks remarkably like a Russian wind turbine design
I saw at the International Inventors Exhibition in Geneva the other month.
There was this Russian inventor, don't recall his name right now,
who presented his (patented!) wind turbine design there.
I believe I included a scan of his info brochure in one of the zipfiles
about the Geneva convention which I uploaded a few weeks ago
(see this thread: http://www.overunity.com/index.php?topic=4430.msg88250#msg88250 (http://www.overunity.com/index.php?topic=4430.msg88250#msg88250)).
An efficient wind-trap idea. :)
(for those familiar with Dune ;) ;D)
yes it does have the same concept. The only thing that was not the same was the open venturi effect on the returning side. i sent a concept picture to a turbine company in canada, maybe they will include it in a next design ;D
@ Haliburton.
Hmmm... Very similar concept to those spinning air vents that are sometimes found on top of work vans. Judging by how fast those air vents spin, I think that your concept has good potential.
Only one way to find out... Build it ;D.