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An Introduction to wind power

An Introduction to wind power. By Jack Bradley, University of Bradford. Introduction to Wind Power. History of wind power Wind resource How wind turbines work Some basic characteristics Relative efficiencies Environmental Impacts. Where we use our energy. In the home.

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An Introduction to wind power

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  1. An Introduction to wind power By Jack Bradley, University of Bradford

  2. Introduction to Wind Power • History of wind power • Wind resource • How wind turbines work • Some basic characteristics • Relative efficiencies • Environmental Impacts

  3. Where we use our energy

  4. In the home

  5. Where Our Energy Comes From?

  6. Future Energy Sources

  7. UK Wind Resource • 990 TWh Onshore of which 60+ will be recoverable. • 2869 TWh Offshore of which 100+ will be recoverable.

  8. World Wind Resource • 1200 TW World Resource • 10TW Theoretically recoverable • Worlds Energy Consumption 1.3TW Source Twidell And Weir

  9. Persian (2000 b.c) Direction of Prevailing Wind

  10. Windmills

  11. 1970’s and 80’s

  12. 2000+

  13. Wind Pumps

  14. Early Electricity Source www.windpower.dk

  15. World Wind Markets

  16. Power Law v A l

  17. Turbine Size Source Renewable Energy World Mar 02

  18. Simple Wind Loggers

  19. Wind Speed Distribution Curves Mean

  20. Energy Distribution

  21. European Wind Atlas

  22. NOABL

  23. Basic Principles Drag Machines

  24. Basic Components of HAWT Direction of Blade Rotation Low Speed Shaft Nacelle Swept Area Yaw Bearing Hub Rotor made up hub and blades Direction Free wind Tower

  25. Lift Machines Horizontal Axis Lift Drag True Wind Direction

  26. Lift Machines Horizontal Axis Driving Force Apparent wind direction Lift Direction of Blade Movement True Wind Direction Drag

  27. Lift Machines Horizontal Axis Driving Force Apparent wind direction vR Lift Direction of Blade Movement Vb Drag True Wind Direction v

  28. Tip Speed Ratio (TSR) Cp TSR

  29. Solidity • High Solidity machines have low TSR and High Torque • Low Solidity machines have high TSR and low torques

  30. Different Types of WEC Source Boyle

  31. Anemometers • Spot measurements of little use. • Average wind speeds required • Simple Anemometer gives Run of Wind measurement

  32. UK Wind Speeds

  33. Impacts (Noise) Source Boyle

  34. Impacts (Visual)

  35. Impacts (Birds) • It is estimated for 1000MW in Holland • 21,000 bird deaths • 1,000,000 due to power lines • 1,500,000 due to wild fowlers • 9,000,000 due to road traffic Source Winkleman 1995

  36. Conclusions • Huge world resource • Power in the wind is proportional to the cube of the speed • Assessment of site wind speed is critical • Like all generation wind power has environmental impacts • Careful siting can minimise these problems

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