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February 20, 2007

Patent Pending on Full-Scale 2.5 kW Wind Turbine

Clarkson University and Warner Energy are collaborating on a small wind turbine design that can be used in both urban and rural areas.
Potsdam, New York [RenewableEnergyAccess.com]

Kenneth D. Visser, associate professor of Mechanical and Aeronautical Engineering at Clarkson University, likes to work with air. From teaching undergraduate aircraft design and developing devices to reduce drag and increase fuel efficiency on tractor trailers, to helping bring about a new generation of small wind turbines, he applies his understanding of the intricacies of air motion to modern day problems.

"Today's small turbines are only about half as efficient as theoretically possible. If turbines can be made more compact and efficient, the cost effectiveness would promote owner interest and they could be mounted on building tops in metropolitan areas, on farms and even residential homes across the country."

-- Kenneth D. Visser, Clarkson University, associate professor of Mechanical and Aeronautical Engineering

On the other hand, Pragasen Pillay, the Jean Newell Distinguished Professor of Electrical and Computer Engineering at Clarkson, likes motors. Pillay focuses his research on electrical machine drives for industrial and alternate energy applications, including wind turbines.

With wind power becoming one of the nation's fastest growing industries, researchers like Visser and Pillay are helping businesses make wind economically competitive with other forms of energy by combining their knowledge to increase the aerodynamic and electrical efficiency of turbines.

To accomplish this, Clarkson University is collaborating with Warner Energy in New York to develop small wind turbine design concepts that can be used in both urban and rural areas -- and can operate efficiently in low wind areas. Warner Energy is a joint venture, combining the expertise of O'Brien & Gere, an engineering and project delivery company, and the Drescher Corporation.

The collaborative research and development team's research includes an increased optimized multi-blade/multi-rotor design for improved aerodynamics and the use of soft magnetic composite (SMC) for the axial field generator design.

According to a recent article published in O'Brien & Gere's corporate magazine Portfolio, two key technical hurdles need to be tackled for wind to become a truly viable source of renewable energy.

First, more power must be extracted from areas with less wind. This is important because the majority of the U.S. population lives in lower wind speed areas. Second, the technology must become economically competitive so it is feasible for both homeowners and developers of large wind farms to adopt wind energy.

"Today's small turbines are only about half as efficient as theoretically possible," said Visser. "If turbines can be made more compact and efficient, the cost effectiveness would promote owner interest and they could be mounted on building tops in metropolitan areas, on farms and even residential homes across the country."

A patent is pending on an optimized design concept and construction is underway on the full-scale 2.5 kilowatt prototype. The first bench-scale prototype was designed, built and tested at Clarkson.
Image Gallery (1)
 
Reader Comments (10)
 
No image available
February 20, 2007
Not kidding.
Please check at:
http://www.youtube.com/results?search_query=wind+turbine+wave&search=Search
a 6' x 7' feet rotor is equal to 16 same size propeller rotor.

Also take a look at it low speed demonstration.
Very Kindly Yours

Phi
Phi
Comment 1 of 10
No image available
February 20, 2007
I agree... this is industry PR not news.
Comment 2 of 10
No image available
February 20, 2007
So why is this turbine interesting? Is it the first to optimize for low wind speed?
Comment 3 of 10
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February 21, 2007
Looks like same old same oh, noy hews.
Comment 4 of 10
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February 21, 2007
Dear Ian Bowhey.
I found a good article ; If you don't have time to go thru techies then read his conclusion.

I beleive in order for "Wind" device it should follow this equation : "You feel it=You get it". Otherwise it will not survive in urban setting; Because one can never predict what your next door friend will do that causes turbulance?

Best
Phi
Comment 5 of 10
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February 21, 2007
I'm no scientist, engineer or mathematician just an entrepreneur with good old common sense. From a rookies point of view the only way to increase the effiency of win turbines is to reduce the drag coeffecient of the blades, less friction on gears and bearings, improve bearing design and improve delivery of energy produced in a more efficient manner. Solve these problems and the efficiency will increase. Want to know how? Ask me I'm the idea man just need an engineer to follow me.
Comment 6 of 10
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February 21, 2007
The primary concern with building integrated wind systems is turbulence found in rooftop wind environments. The question is: How does this turbine handle turbulent wind flows?

Also, is the turbine a HAWT or a VAWT, as the picture disiplayed in the article shows both varieties.

Im currently doing a masters thesis on this subject using pollution dispersal software to map turbulent wind flows on rooftops. Through the use of 3d anomometers we hope to validate existing software packages to predict turbulent wind flows on rooftops without having to individually measure each building integrated rooftop wind situation. The study will provide "best practices" for rooftop installations as well as a software program installers can use for installing wind turbines in the least turbulent zones on potential customers rooftops.

Phil@solarenergy.org
Comment 7 of 10
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February 22, 2007
Friction might be an issue with turbine design but the problem with urban turbine placement is external to the turbine. Turbulence rattles turbines of all shapes and sizes to ruin in relatively short time periods, and conversely lack of flow due to obstructions decreases potential turbine output.

Wind turbines must be placed to maximize the utilization of non-turbulent wind flows. The only way to do this is to know where turbulent zones occur within the built environment.

Having the most advanced solar mono-crystalline panel in the world won't generate squat if it's in the shade of a tree. The same rule applies here, new materials, bearing, blade and turbine designs are great when trying to design better wind power conversion devices i.e. wind turbines. But understanding the available wind resource must be the first and foremost concern when implementing building integrated wind systems.
Comment 8 of 10
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February 22, 2007
A friend of mine near Chicago has discovered a material that he calls " nanolube TM " that virtually eliminates metal to metal friction and wear . This material will prove quite useful in increasing the power production and reduce maintenance of any wind generation system WAHT or VAWT .
Comment 9 of 10
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February 23, 2007
I understand that some people don't like windmills in urban settings. But isn't it these very same people that use their cell phones which have towers everywhere to transit the harmful microwaves so they can gossip to their friends about the ugly wind towers? Everyone knows that there is wind everywhere. It is just a matter of how high right? Imagine a wind turbine that could withstand the loads of being up in the Jet stream and what kind of power it could generate. From what I see there is not only room for increased effiency in our wind turbine tecnology but our towers as well. Height vs expense. Turbines vs public opinion and acceptance. The former just takes structural engineering and a commitment to do what is right no matter what the cost. They spend 100's of billions on reactors right? The latter takes social engineering. Just take a page from China or Europe for that matter. Do what is right. Build our turbines on top of new and existing sky scrapers.
Comment 10 of 10
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