A wind turbine For The Home
GREEN POWER: Theme for homeowners: with small wind turbines, you will soon be able produce your own electricity right out outside. The manufacturers produce the mower blades using nanoparticles from Bayer MaterialScience.
If you have room in your backyard for a cherry or apple tree, you will quickly be able create power there significantly. Just install a wind turbine from Eagle Tuulivoima, hook it up to the power grid and you're good to go.
The Finnish company has just begun producing small wind generators. 'We're starting off with two models:
one using a rated creation of two kilowatts and one with five kilowatts,' says company founder Juha Siitonen. The product range is always be expan-ded next year to include 10 and 20 kilowatt models. To compare, large systems generate over 1,000 kilowatts, 'but ours are adequately sized for personal use.'
Oddly enough, the idea of building wind generators for want to know originated in Lahti, an inland city in Finland where simply light breeze usually produces. But it's also home to Amroy, a company with very special expertise: it incorporates carbon nanotubes (CNT) into plastic resin by a different method, providing a material with signif-icantly improved mechanical sites.
Hybtonite will be the name from the reinforced epoxy resin. This sounds familiar, that's because it is a deliberate allusion to the legendary kryptonite of Superman fame. The material's unusually high strength is due to Baytubes brand carbon nanotubes supplied by Bayer MaterialScience. Hybtonite has already demonstrated its toughness various other fields of application.
For example, the material is were accustomed to produce ice hockey sticks and skis.
A Bayer MaterialScience customer in China manufactures cutting blades between 40 and 50 meters long from Hybtonite for large wind power plants. Consider use identical shoes material to make small wind turbines?
One day, Amroy employee Kimmo Kaila discussed this idea with buddies Miamari and Juha Siitonen in Lahti, and had been immediately taken with it. So much so that they quit their jobs and founded their own company in 2007: Eagle Tuulivoima. Tuulivoima is the Finnish word for wind power.
The Siitonens soon learned, however, which are required more than the right material supplementations lightweight mower blades. The generators that convert the rotation into electrical energy proved end up being something connected with problem. 'Conventional devices need about 260 rotations a minute to generate electric power,' explains Miamari Siitonen.
In other words, develop electricity, need a wind speed of 7 (51-60 km/h) or much more. Because weather conditions of this kind are not much of a daily occurrence, the Finns devised pretty own solution. Corporation had a groundbreaking generator engineered that operates efficiently at wind s d thus meets among the many key requirements for mass production.
The smallest system could be the two kilowatt turbine. Its rotor blades weigh only 4.5 kilograms, even though they are 2.5 meters long. When they were made from glass fiber reinforced plastic, they would weigh double the amount of. These blades would also have a much smaller surface area in along with the flatulence.
This shows that the blades on the actual system put together a higher wind yield. As the result, they are much more desirable. If you have bigger and lighter rotor blades, the first question probably should also be whether they will break without difficulty in high winds. Could in scenario is no, thanks into the tiny carbon nanotubes included in the plastic compound by supplier Amroy. These little CNTs let the material in contact high mechanical stresses.
'They also prevent material fatigue assure a long service life,' emphasizes Amroy CEO Antti Valtakari. This effect is caused by both the elongated shape of the carbon structures has the company chemically anchors them each morning plastic. What's more, it will take the addition of only percent of CNTs by weight for this purpose performance.
For individual homeowners, this method of alternative power generation naturally is only an attractive option if for example the price is perfect.
It is predicted to be cheaper than EUR 10,000 for that two kilowatt wind turbine including assembly. The system can generate approximately 4,000 to 8,000 kilowatt hours of electrical energy annually, although the figure is different from region to region. Miamari Siitonen has calculated that this wind turbine this size can supply you with a single family home with average consumption because of the electricity it needs. If the turbine produces surplus energy, it really is fed in the public grid, as is usually done with solar power. Alternatively, the surplus can be located.
In targeting customers, the Finns have their eye on more than environmentally conscious homeowners inside industrial places. 'We are mainly focusing on regions accustomed along with very unreliable power supply, such as India or countries in Africa,' Siitonen says. If all goes well, the company may one day be too known as the certain Finnish mobile communications corporation.