Wind Turbine – Rooftop
Tags: New Wind Turbine Design
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February 17th, 2009 at 2:58 pm
just hook up a small electric motor to it, and have it run like a car, continuously running, and the motor is always on because it make a loop
February 18th, 2009 at 10:55 am
Well I don’t see anything hanging off it to actaully produce the power. I suspect that drag will decrease the kinetic energy. I also wonder what noise 5 of these things on a roof would make!
February 21st, 2009 at 1:22 pm
If anyone knows a page with the specs and/or where you can buy one…send me a message PLEASE
February 23rd, 2009 at 8:09 pm
No its not! 3500 to power your whole house. some cost that much for 1 crappy one.
February 27th, 2009 at 12:08 am
that design would be directional anyways.
March 1st, 2009 at 9:11 am
700 Bucks is way too much, Id bet u cound build that thing with a 2 hundred dollar trip to home depot, charger and all.
March 4th, 2009 at 9:05 am
my pre-commentator is right, you’ll need way more cross section to produce adequate power. That little sucker might produce 10 watts at best … an average usage of 10000kw/h per year can never be fullfilled by that one, not by five and not by ten either …
March 7th, 2009 at 4:39 pm
It slices, it dices … but wait! There’s more! with this tiny attachment…
his invention also claims that it will make hot water for you by feeding water through the horizontal axis of the windmill.
March 10th, 2009 at 6:37 pm
I’m not sure this inventor even has a plant building these, much less exporting them to the US. Just because he’s applied for a patent does not mean the invention works.
To build one yourself, you should be able to follow his patent application. A good patent should be able to teach his invention to others skilled in the craft of building one.
Google for his WIPO Patent Application WO/2008/067593 or follow this link:
tinyurl . com / 694jf6
after removing all the spaces.
March 13th, 2009 at 1:30 am
I’m not so quick to buy his numbers. An average household as a rule of thumb uses about 9000 kWh a year, or about 1 kW every hour. The news reporter says 5 of these will supply that. I am not so quick to buy those numbers given the small cross section of his windmill and the fact it is fixed horizontally to work with one or two major wind directions. Someone may have forgotten the capacity factor in their calculation.
And yes, I see no means of collecting it.
March 14th, 2009 at 5:36 pm
Fantastic! How can I buy or build one?
March 18th, 2009 at 4:02 am
Notice this is a Patent Application and that it has no patent been granted yet. The queue is several years long. The spec does not really explain why the airfoil is novel over previous inventions. My guess is that the Patent examiner may determine that there is nothing novel.
March 20th, 2009 at 6:08 am
Google for “WIPO Patent Application WO/2008/067593″
The base claim is a novel airfoil. The rest is a horizontal Gyromill.
“1. A wind turbine apparatus characterised by a plurality of elongated turbine blades rotatably mounted about an elongated axis, each turbine blade having an aerofoil shaped profile with a continuously curved outer foil surface and a cupped or cutaway portion on an inner foil surface.”
March 22nd, 2009 at 10:44 pm
WIPO Patent Application WO/2008/067593
Attey, Graeme Scott (8 Nelson Street, South Fremantle, W.A. 6162, AU)
Kelvin, Lord. Ernest (Lord and Company, 4 Duoro Place West Perth, WA 6005, AU)
DESIGN LICENSING INTERNATIONAL PTY LTD (8 Nelson Street, Fremantle, W.A. 6160, AU)
March 23rd, 2009 at 10:09 pm
Looks great, but I did not see any load on it such as an alternator or generator or Gears required. What is the amount of power you expect for a 36 inch diameter drum 4 or 5 feet long? Is there any stats or power curves availible? You should post them.
March 24th, 2009 at 11:37 am
“Things I can think of that can be patented are improvements of efficiency such as airfoil enhancements, and bearings at each side and maybe methods for attaching it.”
Well that’s true. However, that would have to be a bearing or wing patent not a wind turbine patent.
This gyromill still just uses wing lift exactly like a Darrieus Turbine. Putting on it’s side is merely a new application not a new invention.
March 27th, 2009 at 7:03 pm
The obvious drawback with the Darrieus and Gyromill is that scaling the turbine probably does not result in any n^2 gains, but only n gains where n is the length of the blade. With a doubling of the blade length, the radial windmills get a 4x gain in power. For these, it’s linear.
My homeowner’s association would not like these any better. If they could just make them look like satellite dishes LOL.
March 30th, 2009 at 5:13 pm
Ahhh but this is a horizontal Gyromill. The Darrieus has vertical curved blades, the Gyromill has vertical blades.
Wikipedia has a good article on this: “Darrieus wind turbine”
But essentially, the overall concept of most wind turbines has been patented a long time ago and therefore in the public domain already. Things I can think of that can be patented are improvements of efficiency such as airfoil enhancements, and bearings at each side and maybe methods for attaching it.
April 2nd, 2009 at 4:39 am
Not sure what improvement they could cite on this patent beyond what Darrieus already did. I suppose that exact design could be protected much like Ford can’t just make exact replicas of a Toyota. But they are both a still just cars. And this is just another Darrieus turbine.
April 4th, 2009 at 11:29 am
Yes, use an wind-powered alternator, a charge regulator, a set of deep-discharge batteries and an inverter to power your 110v AC stuff.
April 6th, 2009 at 3:29 pm
It’s quite the opposite. In 1991, a national wind resource inventory taken by the U.S. Department of Energy startled the world when it reported that the three most wind-rich
states — North Dakota, Kansas, and Texas. In these states, wind is actually very reliable and can be used to provide power at a much lower cost than nuclear power.
April 9th, 2009 at 2:42 pm
Solar-thermal can. Solar-thermal takes the sun’s heat to heat energy storage. In turn, energy is produced from the energy storage medium. Electrical demand is less at night, so it makes sense to cut back on the amount produced. Much of the power produced by nuclear power plants 24×7 is wasted because it’s not consumed at night.
April 11th, 2009 at 7:19 am
Patents expire in 17 years. You have to significantly improve or alter the state of the art to get patent protection. In return for the claims, the patent includes a spec that teaches readers of the patents the extensions to the state of the art.
April 11th, 2009 at 4:33 pm
It’s a cool turbine, except how do you patent a Darrieus wind turbine invented back in 1931 by French inventor Georges Darrieus? It’s just one more Darrieus variant. Maybe it’s day has finally come.
April 12th, 2009 at 11:53 am
You are so dumb. Its a joke.