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Exploring Wind Energy: Harnessing the Power of the Winds

Winds are created by the Earth's uneven heating, and wind energy is captured through windmills to generate electricity. Learn about wind turbine technology, conversion of wind energy to electricity, and the different types of wind turbines and their applications. Discover the impacts of wind power and the history of wind farms, from ancient times to modern installations.

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Exploring Wind Energy: Harnessing the Power of the Winds

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  1. Wind Energy!!!

  2. Wind Energy Winds are caused by uneven heating of the Earth (landmass and water body together) by solar radiations generating air movement. These air movements are know to many of us as land breeze and sea breeze. This movement of air can be used to do work. This energy is harnessed with the help of a windmill and electricity is generated from it.

  3. Energy in the Wind

  4. How does a wind turbine work?

  5. Wind Energy Technology At it’s simplest, the wind turns the turbine blades, which spin a shaft connected to a generator that generates electricity. Large turbines can be grouped together to form a wind power plant, which feeds power to the electrical transmission system.

  6. Inside a Wind Turbine

  7. Conversion of Wind Energy to Electricity

  8. Wind Turbine Perspective Workers Blade 112’ long Nacelle 56 tons Tower 3 sections

  9. Modern Windmills

  10. Orientation Turbines can be categorized into two classes based on the orientation of the rotor. Vertical AxisHorizontal Axis

  11. Types of Electricity Generating Windmills • Small (10 kW) • Homes • Farms • Remote Applications • (e.g. water pumping, telecom sites, ice making) • Intermediate • (10-250 kW) • Village Power • Hybrid Systems • Distributed Power • Large (250 kW - 2+MW) • Central Station Wind Farms • Distributed Power

  12. Modern Small Wind Turbines:High Tech, High Reliability, Low maintenance Technically Advanced Only 2-3 Moving Parts Very Low Maintenance Requirements American Companies are the Market and Technology Leaders. 50 kW 10 kW 400 W 900 W

  13. U.S.’s largest Windmill Manufacturers General Electric Clipper

  14. Impacts of Wind Power: Noise Modern turbines are relatively quiet Rule of thumb – stay about 3x hub-height away from houses

  15. Wind Farms The largest Wind Farm in India, situated in Madurai, Tamil Nadu

  16. Off-Shore Wind farms

  17. Middelgrunden

  18. Ancient Wind Farms

  19. Early “WINDMILL” in Afghanistan (900AD)

  20. 1980’s California Wind Farm Older Technology + Lower Elevations + Poorly Sited = Bad News!

  21. Jacob’s Turbine – 1920 - 1960

  22. Smith-Putnam Turbine Vermont, 1940's

  23. The End

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