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Tiny Wind Turbines that Could Power a Home

Everybody wants to have a cleaner Earth, but few of them take any actions. One of those people is Doug Selsam, who designed high-power wind turbines that can generate enough energy to power a home.

The wind turbines measure about 14-18 inches in diameter and they can generate an impressive amount of 200 watts for a 20 mph wind, but the wind turbines could do better if the winds are stronger.

Selsam's wind turbines are made of high-strength carbon fiber materials which give the turbines the possibility to be hooked as one. This system is very simple and it weighs a bit, as you see, it can be held in one hand.

For the moment, there is no word about release date or availability, therefore I can only say that it's an interesting concept

Original Link (via Device Daily)

Picture of Tiny Wind Turbines that Could Power a Home
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westfw9 years ago
  • The wind turbines measure about 14-18 inches in diameter and they can generate an impressive amount of 200 watts for a 20 mph wind
Hmm. I would say that there is a significant difference between a "14 inch diameter turbine", and a 20 foot mast with a dozen or so 14 inch propellers mounted on it every couple of feet. Even though it might technically correct, a thing 14inches by 20feet is not what most people envision when one says "14 inch diameter turbine."

Still, it's an interesting idea; much easier to manipulate than a single large blade, I expect...
PKM westfw9 years ago
Well I guessed that what was good about this design is a small "unit" that provides a good power/size ratio (200w from a single 14" turbine is pretty good going), and presumably can be scaled in ways a single large turbine can't. Seeing that mast with a row of turbines on it made me imagine a similar row along the spine of a house roof catching "ridge lift" (I read somewhere that the wind velocity at the top of a slanted roof is 30% higher than the wind at the same altitude in an open space) and it would presumably be less objectionable to NIMBYers than a high mast with a single big turbine on it.
westfw PKM9 years ago
I'm pretty sure that the 200W number is for a whole mast worth of propellers; it's a sort of "distributed turbine"; it make construction and shipping much simpler, but isn't really "smaller" in erected form than a conventional turbine (depending on how you measure, of course. It's much more one-dimensional than a conventional turbine, but probably occupies about the same 3D space, depending on wind direction. Which makes a certain amount of sense.) I wonder if this scales DOWN to model airplane propellers and carbon fiber kite spars? THAT would be an interesting "small wind" development, on par with a "wind belt", perhaps... (Someone try it!)
westfw westfw9 years ago
Huh. A quick look at the propellers at towerhobbies.com shows that:
  • I don't know crap about propellers. There must be over 1000 propellers there, with several 10s for any particular diameter. With mysterious designations. I have no idea which would be best to use "backward" in a windmill, for instance.
  • readily available propellers extend all the way from "quite small" to larger than those used in the generators shown in the link. The largest I found were 26 inches long (and "in stock"!)
The design shown seems to put all the support burden of the propellers, axles, AND wind pressure on the bearings of the generator. That seems worrisome...

Sharku9 years ago
he should of added cowlings, then you can operate under lowers wind speeds
That would complicate things insanely.
These actually seem like a great idea, also they could be used in a water pipe setting, where rivers have been routed through pipes a set of turbines like this could be made the diameter of the tunnel and generate reasonable power....
Good idea!
Now I need to get underneath belfast, the second largest river runs below the streets...
Kiteman9 years ago
It looks good, but how does it deal with wind from different directions? And UK windspeeds of 20+mph are relatively rare.

Plus, I'm not sure the design is urban-friendly - it certainly would be hard to get permission from UK town planners, given that it would probably need to be on a mast significantly higher than the roofline.

Still, it looks nice.
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