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Um novo modelo de usina e\u00f3lica foi constru\u00eddo pela empresa da Tun\u00edsia Saphon Energy. O diferencial dela est\u00e1 em aproveitar 80% mais a energia do vento do que as convencionais, mesmo n\u00e3o tendo h\u00e9lices.<\/p>\n
Intitulada Saphonian, a tecnologia \u00e9 inspirada nas velas dos barcos. O modelo captura a energia cin\u00e9tica do vento e converte-a em el\u00e9trica atrav\u00e9s de pist\u00f5es e hidr\u00e1ulica. Para realizar este processo o disco \u00e9 posicionado contra o vento que, com sua for\u00e7a, causa oscila\u00e7\u00f5es no aparelho.<\/p>\n
O movimento provocado pelo vento \u00e9 transferido para os pist\u00f5es que podem ser ligados a um acumulador ou gerador. No primeiro caso seria apenas para guardar energia j\u00e1 a segunda op\u00e7\u00e3o seria \u00fatil caso houvesse necessidade de eletricidade instantaneamente.<\/p>\n
Uma das vantagens desta usina \u00e9 que ela \u00e9 completamente silenciosa, portanto n\u00e3o incomoda algumas esp\u00e9cies de p\u00e1ssaros. Al\u00e9m disso, sua constru\u00e7\u00e3o \u00e9 mais barata e mais f\u00e1cil de manter. Essas caracter\u00edsticas fazem com que os custos sejam menores para o consumidor tanto na hora de comprar, como na conserva\u00e7\u00e3o.<\/p>\n
“Nosso prot\u00f3tipo de segunda gera\u00e7\u00e3o \u00e9 2,3 vezes mais eficiente, e custa cerca de metade do pre\u00e7o das turbinas e\u00f3licas convencionais, pois descarta (na constru\u00e7\u00e3o do modelo) os componentes mais caros\u201d, afirmou o executivo-chefe da Saphon Energia, Hassine Labaied, \u00e0 Organiza\u00e7\u00e3o Scidev de ci\u00eancia e tecnologia.<\/p>\n
A efici\u00eancia da Saphonian representa uma economia geral de 45% em custos diversos relacionados com infraestrutura. A Saphon Energy j\u00e1 conseguiu patentear o modelo, e est\u00e1 agora em fase de capta\u00e7\u00e3o de recursos para que o produto seja comercializado em at\u00e9 dois anos.<\/p>\n
“Estamos negociando com um n\u00famero de empresas internacionais que produzem tecnologia de energia renov\u00e1vel”, disse Labaied. A companhia est\u00e1 tentando fazer uma parceria com um fabricante para que seja poss\u00edvel distribuir o modelo mundialmente. Com informa\u00e7\u00f5es do Techtudo.<\/p>\n
Fonte – CicloVivo de 14 de novembro de 2012<\/p>\n
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Sail-inspired wind turbine doubles efficiency without blades<\/strong><\/p>\n We know that there’s more than enough wind energy out there to power our entire civilization, but conventional wind turbines don’t do that great of a job of harnessing it. They’re expensive and inefficient, and we’re looking for better technologies, one of which is a super efficient wind turbine that doesn’t need blades.<\/p>\n It looks like some sort of flat satellite dish-thing, but this is Saphon Energy’s wind non-turbine, the Saphonian. It doesn’t have blades, and nothing on it spins: it just sits there, pointing into the wind, and captures energy. The design is based on sails, the kind that pull boats around, which are very efficient (and have been for thousands of years) at turning wind energy into usable mechanical energy.<\/p>\n Instead of harvesting wind energy with rotating blades, the Saphonian uses a sort of round sail held in a frame. As wind pushes on the sail, it oscillates in “a non-rotational back and forth motion,” driving small pistons as it does so. The pistons are hooked up to a hydraulic system, which can either store energy via an accumulator, or convert it directly into electricity with a generator. There’s no transmission, no gearbox, and the thing barely moves and is almost completely silent. At the same time, however, it’s able to generate energy 2.3 times more efficiently than a traditional bladed turbine (harvesting up to 80% of available wind energy) while saving 45% or more on infrastructure cost. Not too shabby.<\/p>\n Saphon got a patent on this design earlier this year, and it’s currently looking to partner up with a manufacturer for worldwide distribution. So far, we’re not seeing any downsides here, except that abandoning the traditional bladed design means that we no longer have the option of reversing all of the world’s wind turbines to slow the rotation of the Earth on special occasions like my birthday. Oh well.<\/p>\n Fonte – Saphon<\/p>\n