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Institute for CTE Educators July 15-17, 2013

A STEM View of Wind Energy. Institute for CTE Educators July 15-17, 2013. R. Keith Booker, Ed.S Memphis East High School. Wind Energy - Overview. Vertical Axis Wind Turbine (VAWT) 7 th Century - Persia First use of wind for production Used for milling grain 11 th Century – China

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Institute for CTE Educators July 15-17, 2013

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  1. A STEM View of Wind Energy Institute for CTE Educators July 15-17, 2013 R. Keith Booker, Ed.S Memphis East High School

  2. Wind Energy - Overview • Vertical Axis Wind Turbine (VAWT) • 7th Century - Persia • First use of wind for production • Used for milling grain • 11th Century – China • First to adapt wind for pumping water • First large-scale salt extraction

  3. Vertical Axis Wind Turbine (VAWT) • Advantages • Omni-directional • Low wind speed • Low mounting height • Disadvantages • Low starting torque • Dynamic instability • Main bearing failure

  4. Wind Energy - Overview • Horizontal Axis Wind Turbine (HAWT) • 11th Century - Europe • Brought from Middle East during Crusades • Used for grain mills and water pumps • 14th Century – Netherlands • First large scale pumping application • 1887 – James Blythe - Scotland • First use for electrical generation

  5. Horizontal Axis Wind Turbine (HAWT) • Advantages • High-wind stability • Variable-pitch blades • Lower mechanical stress • Disadvantages • High start-up cost • Downwind instability • Requires additional controls

  6. Vertical Axis Wind Turbine (VAWT) Panemone Wind Turbine

  7. Vertical Axis Wind Turbine (VAWT) Darrieus Wind Turbine

  8. Vertical Axis Wind Turbine (VAWT) Savonius Wind Turbine

  9. Horizontal Axis Wind Turbine (HAWT) Fixed-blade Wind Turbine

  10. Horizontal Axis Wind Turbine (HAWT) Turbine Components

  11. U.S. Wind Production Zones

  12. Worldwide Production 2010 Worldwide Wind Energy Production = 2.8 Terawatt hours (TWh) Average U.S. household usage = 3 kWh 2.8 TWh = 2,800,000,000 kWh / 3 kWh = 930,000,000 U.S. homes

  13. Worldwide Production Top Ten Producers (GWh) 1. China 2. U.S. 3. Germany 4. Spain 5. India 62.7 46.9 29.1 21.7 16.1 6. France 7. Italy 8. U.K. 9. Canada 10. Portugal 6.8 6.7 6.5 5.2 4.1

  14. Questions?

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