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Green Futures ForumA way forward for rooftop micro-wind?
Bladeless wind turbine saves wildlife and costs

Sheathed and SilentCritics of wildlife-unfriendly wind turbines have quietened down since the Royal Society for the Protection of Birds installed one on its flagship visitor centre and applauded the 175-piece London Array (see 'Bird spotters convert to wind power'). Now, a new technical development could just silence them altogether.

Solar Aero Research, New Hampshire, has patented a bladeless wind turbine with a mesh-covered air inlet, which poses no danger to bats and birds. Nor will it disrupt radar used by air traffic controllers and the military.

The Fuller Wind Turbine, developed over four years with £215,000 of private investment, harnesses the viscosity of air passing over the rims of thin discs to generate energy. Designed with urban rooftops in mind, the entire housing swivels almost silently as it tracks the wind – the only visible motion.

“This enclosed turbine should produce significant power at half the life-cycle cost of the windmills,” says Howard Fuller, its inventor. The savings are due to the elimination of up-tower maintenance – to rebalance the blades of conventional wind turbines, for example.

A proof of concept model exists and a prototype is expected to generate 10kW, with production units ranging from 5 to 100kW. An insignificant amount, perhaps, compared to a 3MW windmill, but – argues Fuller – power generation can be scaled up by grouping arrays more densely, with blade clearance no longer a concern.

Nick Medic of Renewable UK (formerly the British Wind Energy Association) welcomed the innovation: “The fact that people are coming up with such a variety of solutions testifies to the vibrancy and viability of the wind energy market, and shows that there is a lot of potential”.

Whether the Fuller can boost micro-wind for the home remains to be seen. As Dale Vince of Ecotricity remarks, it’s “a huge challenge – nobody seems to have cracked it yet”.

Solar Aero is seeking tax-deductible grants to develop the technology further. Manufacture will be licensed to franchisees, and Fuller expects “many thousands” to be made.

– Andrew Purvis
19 July 2010
, Green Futures forum


 

TreeHugger.com Article: Solar Aero Develops Bladeless, Tesla-Inspired Wind Turbine

by Jeff Kart, Bay City, Michigan

Granted, this doesn't look like much. This wind turbine, developed by Solar Aero Research of Greenville, New Hampshire, doesn't have blades. It doesn't look like a wind turbine, with majestic white arms spinning in the blue sky. Maybe that's a little biased of a statement. But wind turbines can often spark "Not In My Backyard" complaints about noise, along with concerns over bird kills (and aesthetics). It's unclear if this one will be aesthetically pleasing to your neighbors. They probably won't hear it though, and it can't chop up birds or bats, as far as I can tell. Did I mention it was inspired by Nikola Tesla's steam turbine? Solar Aero has patented the Fuller Wind Turbine, based on a patent issued to Tesla in 1913, according to Alternative Energy News and other sources. Officials with Solar Aero, a "nonprofit alternative energy research organization, dedicated to energy independence and development of renewable resources," say the patent was modified for wind generation applications. The model is completely enclosed, with a screened inlet and outlet.

The turbine's only rotating part is a turbine-driveshaft-alternator assembly, which cuts down on maintenance. The company says the Fuller can deliver power at a cost comparable to coal-fired power plants, or about 5 cents per kilowatt hour, GizMag says. Pricing and other details haven't been announced yet. The Fuller is still in development. I wonder how this model could/would compete against traditional systems, whether they be vertical or horizontal. It's sure to spark opinions and maybe critics, based on the old but improved design.


REINVENTING THE WHEEL

Autos
Products That Claim to Save on Fuel Costs

©Wall Street Journal

By JENNIFER SARANOW

What Is It: Ever since gas prices spiked in the 1970s, entrepreneurs have been coming out with fuel-saving products such as magnets that attach to fuel lines and mixture enhancers. The latest products include solar panels designed to harness sunlight to help recharge hybrid batteries and devices that claim to make better use of fuel. ...  Here's a look at some products and their claims:

Solar panels on ... car help recharge the hybrid battery.
How to Get It: Later this year, Solatec Corporation (www.solatec-corp.com) plans to begin selling kits of two 32-watt solar panels meant to boost the fuel efficiency of the Toyota Prius. Solatec says a Prius outfitted with solar panels on the roof could average 55 miles per gallon city driving and 62 miles per gallon on the highway. According to Toyota's Web site, the Prius has a 2006 EPA fuel-mileage estimate of 60 city/51 highway/55 combined mpg.

By early next year, Solatec plans to have panels available for other hybrids such as the Toyota Highlander, Ford Escape and Honda Civic.  ...

Upside: Solar panels on your car are a surefire way to make your reputation as an environmentally aware driver.  ...

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