Desenho de Turbinas Eolicas

8/4/2019 Desenho de Turbinas Eolicas

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O poder do Vento e

AerogeradoresETP Sic Penela

Gualter P J Santos
http://en.wikipedia.org/wiki/Image:Mod-0_Wind_turbine.jpg


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Fontes de Energia Alternativas
http://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.eventhorizonsolar.com/images/00EHlogo.jpg&imgrefurl=http://www.eventhorizonsolar.com/&h=603&w=600&sz=51&hl=en&start=512&tbnid=Uh9Q6uBeFED16M:&tbnh=135&tbnw=134&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D500%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.cenergia.org.pe/Img/Eolica1.jpg&imgrefurl=http://www.cenergia.org.pe/eng/actionf.htm&h=288&w=300&sz=26&hl=en&start=316&um=1&tbnid=lxssQxppx9Nl4M:&tbnh=111&tbnw=116&prev=/images%3Fq%3Dhydro%2Bpower%26start%3D300%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://static.flickr.com/97/231158698_b6545c480c.jpg&imgrefurl=http://sustainabledesignupdate.com/%3Fm%3D200609&h=459&w=500&sz=85&hl=en&start=31&um=1&tbnid=zS2Q2hAgWqUUcM:&tbnh=119&tbnw=130&prev=/images%3Fq%3Dhome%2Bhydro%2Bpower%26start%3D20%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.txucorp.com/responsibility/education/generation/images/hydr_pow.gif&imgrefurl=http://www.txucorp.com/responsibility/education/generation/hydroelectric.aspx&h=289&w=387&sz=13&hl=en&start=4&tbnid=V3kTKUNmEZoVrM:&tbnh=92&tbnw=123&prev=/images%3Fq%3Dhydro%2Bpower%2Bplants%26gbv%3D2%26svnum%3D10%26hl%3Denhttp://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Peltonturbine-1.jpg/440px-Peltonturbine-1.jpg&imgrefurl=http://commons.wikimedia.org/wiki/Image:Peltonturbine-1.jpg&h=600&w=440&sz=59&hl=en&start=267&um=1&tbnid=6COiGWkERrRmiM:&tbnh=135&tbnw=99&prev=/images%3Fq%3Dhydro%2Bpower%26start%3D260%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.originenergy.com.au/files/ClydeHydroPowerStation_update3.jpg&imgrefurl=http://www.originenergy.com.au/corporateimages/&h=2113&w=2107&sz=4741&hl=en&start=1&um=1&tbnid=NOTSAiD3xMEB0M:&tbnh=150&tbnw=150&prev=/images%3Fq%3Dhydro%2Bpower%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DGhttp://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/4/4c/Helios_in_flight.jpg&imgrefurl=http://commons.wikimedia.org/wiki/Image:Helios_in_flight.jpg&h=1974&w=3000&sz=3885&hl=en&start=285&tbnid=w7p8IzsHmzgcpM:&tbnh=99&tbnw=150&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D280%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.speedace.info/solar_cars/solar_car_images/Solar_Wing_front_Japanese_electric_powered_car.jpg&imgrefurl=http://www.speedace.info/solar_cars.htm&h=493&w=753&sz=32&hl=en&start=66&tbnid=K2zq0axfOFVWtM:&tbnh=93&tbnw=142&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D60%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://commons.wikimedia.org/wiki/Image:ISS_after_STS-117_in_June_2007.jpg


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Turbinas Elicas
http://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN


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Turbinas elicas

Uma turbina elica extrai energia do movimento do ar aproveitandoesse movimento e transferindo essa energia para um veio que seencontra ligado a um gerador para produzir eletricidade. Estaenergia depende entre outros parmetros da velocidade do vento e

da rea formada pela rotao das ps do rotor.

O vento pode ser considerado como o ar em movimento.Quando o Sol aquece a Terra, nem todas as regies so aquecidas deforma igual. Algumas partes do planeta ficam mais quentes, e outraspartes, mais frias. O ar das regies mais quentes se expande e seeleva. Quando isso acontece, o ar dos lugares mais frios toma esseespao, fazendo com que o ar se movimente, criando o vento.
http://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&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Existem dois tipos de desenho de turbinas as de eixo horizontal e as deeixo vertical. Nas turbinas de eixo horizontal, possvel capatar mais vento,

logo, a potncia de sada pode ser mais elevada do que as de eixo vertical.Mas nas de eixo horizontal, a torre mais alta e tm de ser definidos maisparmetros de desenhos das ps. Nas de eixo vertical, no nescessrio aexistncia do sistema de rotao (yaw system) e como no h carga cclica

das ps, torna mais fcil o seu projeto. A manuteno mais fcil nasturbinas de eixo vertical, contudo, as de eixo horizontal oferecem melhoreficincia.

Desenho da turbinas elicas

Turbina deeixo horizontal

Turbina deeixo vertical
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6

Componentes principais de uma turbina elica

RotorThe portion of the wind turbine that collects energy from the wind is called therotor. The rotor usually consists of two or more wooden, fiberglass or metalblades which rotate about an axis (horizontal or vertical) at a rate determinedby the wind speed and the shape of the blades. The blades are attached to

the hub, which in turn is attached to the main shaft.

Rotor

Hub cubo

Blades- psMain shaft veio principalHousing nacelleTower torreGear-Box- caixa develocidades

Brake travoGenerator geradorHigh-Speed shaft Veiode alta velocidade
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pts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN


7/327

Qual dever ser o ngulo de ataque?

Qual dever ser o perfil das ps?

Quantas ps devero ser usadas?

Tamanho das psNmero de ps

Pitch das psForma das psMaterial a usarPeso das ps

Variveis das ps do rotor


8/32

8

Turbina elica

O vento empurra literalmente as ps para fora.Estas turbinas so caracterizadas por umarotao mais baixa e capacidades de binriomais altas. So utilizadas para bombagem,serrao ou moagem.Por exemplo, um moinho tpico de herdade deveser desenvolvido com um alto binrio noarranque de modo a bombear ou elevar gua deum poo.

Drag- Desenho

O desenho da ps obedecem ao princpio do arrasto(drag) ou sustentao (lift)


9/32

9

Turbina elica

O desenho de ps pelo sistema de sustentao lift emprega o mesmo princpio

que possibilita os avies, os papagaios de papel e as aves de voarem. A p

essencialmente um aeroflio, uma asa. Quando o ar flui na parte anterior da p , umdiferencial de velocidade e presso de vento criado entre as superfcies posterior eanterior da p. A presso na superfcie inferior maior e portanto aciona o "lift sustentao ou elevao da p. Quando as ps esto ligadas a um eixo central,como um rotor de uma turbina, a sustentaolift transformada em movimentorotacional. As turbinas elicas por sustenta(lift) tm maiores velocidades

rotacionais do que as do tipo de arrastodrag system e consequentemente so asmelhores para gerao de eletricidade.

Lift- Desenho
http://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN


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O ngulo entre a linha de corda do aeroflio e a direo de voo

chamado de ngulo de ataque.O ngulo de ataque tem um enorme efeito na sustentao (lift) geradopelo aeroflio. Isto a eficincia de propulso. Normalmente atingem-sevalores entre1.0 e 15.0 graus.

ngulo de ataque (ngulo da p)

Turbina elica Desenho da p
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Reviso - Questo 1

O que origina o vento?A. Presso do ar

B. Peso da atmosferaC. Diferena de presso

D. Presso baixaE. Presso alta
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O que origina o vento?C. Diferena de presso

Devido ao aquecimento e arrefecimento da superfcie terrestre, formam-se respetivamente zonas de baixas e altas presses. Para equilibrarestas diferenas de presso o ar desloca-se de uma alta para umabaixa presso, dando origem ao que chamamos Vento. Este ainda sofreumas deflees devido a uma fora resultante da rotao da Terra

(fora de Coriolis), explicando-se assim o sentido de rotao diferentedos ciclones nos hemisfrios Norte e Sul. A fora do vento depende davelocidade do ar em movimento. Meteorologicamente dada emmetros/segundo mas, em termos nuticos dada em ns (milhasmartimas/hora).

Reviso - Resposta 1
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tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DNhttp://images.google.com/imgres?imgurl=http://www.easternct.edu/depts/sustainenergy/education/pictures/solar.jpg&imgrefurl=http://www.rightwingnews.com/mt331/2007/02/a_miniinterview_with_dennis_av.php%3Fcomments%3Dshow&h=499&w=400&sz=53&hl=en&start=201&tbnid=fyTFypqsysPpgM:&tbnh=130&tbnw=104&prev=/images%3Fq%3Dsolar%2Bpower%26start%3D200%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN


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Reviso - Questo 2

Qual a unidade de presso?A. Fora / rea

B. Pascal (Pa)C. Libras por polegadas ao quadrado(psi)D. Millirads

E. B e C
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Reviso - Resposta 2

Qual a unidade de presso?A. Pascals (Pa)

A unidade no SI para medir a presso o Pascal (Pa). A pressoexercida pela atmosfera ao nvel do mar corresponde aaproximadamente 101 325 Pa (presso normal).Esse valor normalmente associado a uma unidade chamadaatmosfera padro (smbolo atm)
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