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Energy Ball: Wind turbine for home use

4 points by gasull 18y ago

Protophore 18y ago
It would be nice to have the option to buy a small wind turbine for your house. I wonder if this would help drive residential solar prices down. Another interesting wind power solution: http://www.magenn.com/ http://www.magenn.com/
- DabAsteroid 18y ago
  It would be nice to have the option to buy a small wind turbine for your house. There are small wind turbines available. One has the option. However, why would one choose to excercise it? I wonder if this would help drive residential solar prices down. How could it do that?
  - Protophore 18y ago
    How would wind turbines for the home or office drive down solar prices? Competition in the market place for alternative sources of energy perhaps?
DabAsteroid 18y ago
http://www.wind-works.org/articles/RoofTopMounting.html http://www.wind-works.org/articles/RoofTopMounting.html Mounting wind turbines--of any kind--on a building is a very bad idea. I've yet to see an application where this has worked or will likely work. In short, rooftop turbines will not do what their promoters claim and often will cause their owners no end of grief. http://www.wind-works.org/articles/VentilatorsandSquirrelsinaCage%20.html http://www.wind-works.org/articles/VentilatorsandSquirrelsin... Like ducted turbines, a perennial favorite of hucksters and charlatans is, for lack of a better word, squirrel cage rotors. Many are nothing more than roof-top ventilators repackaged as "wind turbines". As ventilators, they work fine. It's when someone tries to couple them to a generator that they quickly learn why wind turbines use two or three slender, airfoil-shaped blades. Most hucksters, however, never progress that far. They never build actual wind turbines, and perchance that they do, they never measure the "wind turbine's" performance. Of course, they wildly exaggerate the potential of these breathtaking new inventions. Doug Selsam, himself an inventor, has tried to understand why consumers--and the news media--are so gullible. His explanation: ventilators and squirrel-cage rotors are easy to understand, modern wind turbines much less so. After all, a roof-top ventilator with its entire swept area covered with blades looks like it will capture more wind than a modern wind turbine with only a few blades, some with--unbelievably--only one. In a 2002 internet scam, a company peddling ventilators as "wind turbines" claimed their product would produce nearly five times more electricity than a conventional wind turbine of the same size. Naturally, for this "superior" performance they would charge 2-3 times more than for a real wind turbine. The company asserted that they were "thinking outside the box," a catchphrase of 1990s management gurus. They certainly were. They were not even close to the box. They were on another planet where the laws of physics don't apply.

4 points by gasull 18y ago

It would be nice to have the option to buy a small wind turbine for your house. I wonder if this would help drive residential solar prices down. Another interesting wind power solution: http://www.magenn.com/ http://www.magenn.com/

DabAsteroid 18y ago
It would be nice to have the option to buy a small wind turbine for your house. There are small wind turbines available. One has the option. However, why would one choose to excercise it? I wonder if this would help drive residential solar prices down. How could it do that?
- Protophore 18y ago
  How would wind turbines for the home or office drive down solar prices? Competition in the market place for alternative sources of energy perhaps?

DabAsteroid 18y ago

http://www.wind-works.org/articles/RoofTopMounting.html http://www.wind-works.org/articles/RoofTopMounting.html Mounting wind turbines--of any kind--on a building is a very bad idea. I've yet to see an application where this has worked or will likely work. In short, rooftop turbines will not do what their promoters claim and often will cause their owners no end of grief. http://www.wind-works.org/articles/VentilatorsandSquirrelsinaCage%20.html http://www.wind-works.org/articles/VentilatorsandSquirrelsin... Like ducted turbines, a perennial favorite of hucksters and charlatans is, for lack of a better word, squirrel cage rotors. Many are nothing more than roof-top ventilators repackaged as "wind turbines". As ventilators, they work fine. It's when someone tries to couple them to a generator that they quickly learn why wind turbines use two or three slender, airfoil-shaped blades. Most hucksters, however, never progress that far. They never build actual wind turbines, and perchance that they do, they never measure the "wind turbine's" performance. Of course, they wildly exaggerate the potential of these breathtaking new inventions. Doug Selsam, himself an inventor, has tried to understand why consumers--and the news media--are so gullible. His explanation: ventilators and squirrel-cage rotors are easy to understand, modern wind turbines much less so. After all, a roof-top ventilator with its entire swept area covered with blades looks like it will capture more wind than a modern wind turbine with only a few blades, some with--unbelievably--only one. In a 2002 internet scam, a company peddling ventilators as "wind turbines" claimed their product would produce nearly five times more electricity than a conventional wind turbine of the same size. Naturally, for this "superior" performance they would charge 2-3 times more than for a real wind turbine. The company asserted that they were "thinking outside the box," a catchphrase of 1990s management gurus. They certainly were. They were not even close to the box. They were on another planet where the laws of physics don't apply.