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Wind Power

Creating Tornadoes to Power Cities?



On a list of 'holy sh*t that doesn't really sound like a good idea' ideas, creating tornadoes to power cities has got to be pretty close to the top. But really, does it sound any more foolish than attempting to control the force of atomic explosions?

No, it isn't crazier than that, and we've managed to make nuclear power work (albeit with some unfortunate consequences) so why not try harnessing some other of nature's most powerful (and dangerous) forces. Like the tornado!

Louis Michaud can create tornadoes. Of course, right now he's creating very small tornadoes. But if he can make a one meter tall one that produces an excess of power, he's certain that he can create one that is "one to twenty kilometers high" and surrounded by wind turbines that produce 200 megawatts of continuous electricity. The only thing needed to keep the "weather pattern" (monstrous spinning cyclone of death) in place, is a source of heat. This could be geothermal or, more likely, excess heat from a coal or nuclear plant.

Right now the water from these sorts of plants has to be cooled in $20 million towers. Michaud expects to replace these towers with tornadoes by pumping the hot water to a far-away location, heating the ground, and then using the turbines as fans to start the tornado rolling. Quickly, a tornado would form, causing the hot air at the ground to funnel upward into the atmosphere, creating free cooling for the power plant and free power for the wind turbines.



The weather pattern would remain self-sustaining for as long as heat was supplied, and it would be unable to escape the plant unless the ground outside of the plant was the same heat or hotter than the pipes from the steam plant (which seems fairly unlikely...unless you're living in a Micheal Crichton book...in which case you will probably fall in love with Helen Hunt, and that's all that will really matter in the end.)

Michaud hopes to build a four, ten, twenty and thirty meter scale version of the plant before finally moving to commercial scale. This will require a lot of R&D funding, but as Michaud expects the plants to not only make nuclear and coal power cheaper (by obviating cooling towers) but also create extremely inexpensive and continuous wind power, he hopes that investors will be ready to take on the challenge.

As long as they don't build one in my back yard

Via  The Star
 

Gigantor Wind Turbine Rated at 1 Gigawatt


As wind turbines get bigger, wind power gets cheaper. But the economies of scale are henceforth being blown to new heights...and widths, and weights, with this gigantic maglev wind turbine.

The largest wind turbines in the world produce 5 megawatts of power. This monster would produce a full gigawatt...more than most nuclear power plants, enough to power 750,000 homes.

The turbine is colossal, with a footprint of roughly 100 acres. I can't find statistics onhow tall this thing is, but my guess is several hundred meters. It's huge, and it looks like it would be really quite expensive to build. But the owners of the patent are coming out with some astounding figures. Power could be produced at a price of as little as one cent per kilowatt, and investors would recuperate 100% of their money after just a single year.



Something tells me that these numbers won't be so astoundingly good after the design leaves the drawing board. But a 1 cent per kilowatt hour estimate leaves an awful lot of room before it becomes unmarketable.

The biggest problem, of course, is that it would be a huge addition to any landscape, and requires fairly significant wind speeds for maximum efficiency. We'll see if we can strike a compromise that allows people to have cheap power with a new two-hundred-meter-high neighbor on the horizon.

Via TreeHugger
 

Novel Barrel Turbine Wins $34,000 Grant


Graeme Attey, already a little bit famous as the inventor of a two-wheeled, wind-powered "dirt surfer," has just taken his inventing skills to a new (and more useful) level. This roof-top wind turbine is small, cheap, quiet and sits at the peak of the roof-line in order to capture wind at it's maximum speed.

Mr. Attey has been awarded a AU$34,000 grant from the government of Australia to develop the technology and make it suitable for use across windy Western Australia. Another $28,000 was awarded to a scientist to determine the ideal placements for such small-scale residential turbines.

At only AU$700 a piece, these turbines are definitely the cheapest option we've seen in small wind. And though they don't have an enormous generating capacity, they are designed to be used in series. So, an average household could install as many as six of these turbines on their roof, while selling all of their excess electricity back to the electric company.

The only issue, of course, is whether home-owners will be willing to add these clunky barrel turbines to their roof. But if Western Australia really wants to reduce it's greenhouse emissions by 60% in 40 years, they're going to have to make compromises. Besides its somewhat cumbersome appearance, these turbines look to me like a very promising advancement in suburban energy generation.

Video After the Jump.

Via Metaefficient

See Also:
-Big Ideas in Small Wind-
-Shape-Shifting Personal Wind Turbine-
 

Floating Off-Shore Wind Rig Based on Oil Rig Technology

What are the three biggest problems with wind power? Anybody, anybody, Bueller?

1. Bird Kill, 2. NIMBYism and 3 Dead bugs gumming up the works. Now, I'm not saying that these are always legitimate concerns, but migration corridors should be avoided and some people just really don't like the way wind turbines look. These are real problems, so we've got to find real solutions.

How about we put wind turbines in a place that is literally no one's back yard, there are no bugs, and where birds only go to die. Namely, 50-100 miles off-shore. The big problem, of course, is that there's no way to anchor wind turbines into the sea-floor if the sea-floor is 300 meters down (as it is when you get that far off shore.)

Why is why Norsk Hydro has been working on a prototype floating off-shore wind rig called the Hywind. Norsk Hydro's off-shore wind expertise comes directly from their experience with off-shore oil rigs. And now that off-shore oil is less interesting to Norway, Norsk Hydro happily developing this awesome new technology.

A pilot project with three 3 MW turbines will be installed before the beginning of 2008. But future plans call for larger farms with hundreds of 5 MW turbines producing as much as 4 terrawatt hours per year, or roughly enough to power 200,000 households.

More pics after the jump.

Via Inhabitat and Norsk Hydro

See Also:
-World's Largest Offshore Wind Project-
-NIMBY to YIMBY-
-The AeroGenerator-
 

New Shape-Shifting Personal Wind Turbine


Ben Storan just won first prize in BSI's 2007 Sustainability awards for his design for a shape-shifting, vertical axis personal wind turbine.

The device works very much like the Quiet Revolution wind turbines. The design is less efficient than Quiet Revolution turbines, but much more efficient than other turbines marketed toward homeowners. Plus, this new way of building turbines has other advantages as well.

First, the simplicity of Storan's design will bring down the costs significantly from other similar personal turbines. Though, were still looking at a fairly expensive energy appliance.

Second, Storan's turbine can change shape, much like an umbrella, so that it produces the maximum amount of electricity at a wide range of wind speeds and can also be folded up, much like an umbrella, during extremely strong winds. Other turbines have to be locked in place, or even taken down during severe storms.

Beyond Ben's £3,000 award, we can hope that he'll begin marketing and selling the design for big bucks in the near future.

Via TreeHugger and BSI

See Also:
-Loopwing Personal Wind Turbine-
-Big Ideas in Small Wind-
 
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