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Wind Energy

Wind Energy . Sophie Nicolella. How does it work? . Wind is used to generate mechanical power and electricity Turbines turn in the moving air which power an electric generator that supplies an electric current Used for grinding grain or pumping water

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Wind Energy

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  1. Wind Energy Sophie Nicolella

  2. How does it work? Wind is used to generate mechanical power and electricity Turbines turn in the moving air which power an electric generator that supplies an electric current Used for grinding grain or pumping water A generator can convert this mechanical power into electricity to power homes, businesses, and schools Large wind farms are connected to electricity grids. Individual turbines are used to provide electricity to isolated communities

  3. Horizontal and Vertical-Axis Turbines Horizontal- Usually consists of 3 blades. The main rotor shaft and electrical generator are located at the top of a tower. Vertical- the main components are located at the base of the turbine. Generators and gearboxes can be placed close to the ground. They are quiet and packed closer together in wind farms so there is more given space.

  4. Advantages and Disadvantages renewable non-polluting, clean emits no air pollutants or greenhouse gases takes up only a small plot of land (agricultural areas as farming can still continue) • higher initial investment • noise pollution (produced by the rotor blades) • deaths of many birds and bats • intermittent and does not always blow when electricity is needed • unsightly structures (NIMBY- not in my back yard)

  5. The best places for wind farms: *coastal areas *at the tops of hills *open plains *gaps in mountains *places where the wind is strong and reliable *some are offshore You need an average wind speed of around 25 km/h Used in Germany, the US, Spain, France, the UK, Denmark, and many other countries

  6. http://www.need.org/needpdf/infobook_activities/ElemInfo/WindE.pdfhttp://www.need.org/needpdf/infobook_activities/ElemInfo/WindE.pdf http://windeis.anl.gov/guide/basics/index.cfm http://www.eia.gov/kids/energy.cfm?page=wind_home-basics-k.cfm

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