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    HISTORY OF WIND ENERGY

    Published: September 24, 2018

    Since early recorded history, people have harnessed the energy of the wind. Wind energy propelled boats along the Nile River as early as 5000 B.C. By 200 B.C., simple windmills in China were pumping water, while vertical-axis windmills with woven reed sails were grinding grain in Persia and the Middle East.

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    HISTORY OF WIND ENERGY

    • 1. HISTORY OF WIND ENERGY HISTORY OF WIND ENERGY
    • 2. Wind's Early History Wind's Early History Since early recorded history, people have harnessed the energy of the wind. Wind energy propelled boats along the Nile River as early as 5000 B.C. By 200 B.C., simple windmills in China were pumping water, while vertical-axis windmills with woven reed sails were grinding grain in Persia and the Middle East.
    • 3. Wind's Early History Wind's Early History Since early recorded history, people have harnessed the energy of the wind. Wind energy propelled boats along the Nile River as early as 5000 B.C. By 200 B.C., simple windmills in China were pumping water, while vertical-axis windmills with woven reed sails were grinding grain in Persia and the Middle East.
    • 4. Wind's Early History
    • 5. Wind's Early History Wind's Early History New ways of using the energy of the wind eventually spread around the world. By the 11thcentury, people in the Middle East used windmills extensively for food production. Returning merchants and crusaders carried this idea back to Europe. The Dutch refined the windmill and adapted it for draining lakes and marshes in the Rhine River Delta. When settlers took this technology to the New World in the late 19th century, they began using windmills to pump water for farms and ranches and later to generate electricity for homes and industry.
    • 6. Experimenting Experimenting He built his first experimental windmill 1891 in the small town of Askov, less than 20 km from LM Wind Power'scradle in Lunderskov. The first windmill was based on the well-known windmills which had been known for centuries to grind corn. But these were quickly changed to adjustable hinged tree shutters or vanes.
    • 7. Experimenting Experimenting The unstable nature of the wind did cause some difficulty in getting a stable power supply. To solve this, Poul la Cour invented the “kratostat” a device which evened out the uneven drive of the windmill. This proved to be a success and the kratostat pulled the generator with success.
    • 8. Adding Wings Adding Wings In 1919 two Danish engineers, Johannes Jensen and Poul Vending designed and patented a new windmill, The Agricco.
    • 9. Adding Wings Adding Wings Blades were designed as the wings of an airplane and each blade could be turned into different positions just like pitch regulated blades. This windmill also turned against the wind automatically. The wind market declined after 1920, but the idea remained. During the Second World War, the interest for wind power was revived and the technology was demonstrated on an even larger scale.
    • 10. Modern Wind Turbines Modern Wind Turbines Erected a new and more modern wind turbine in the mid-1950s, together with the Danish electricity company SEAS. This turbine had a 12-meter mast and two 8 meter blades and a 10 kW generator. It utilized close to 60% of the possible effect of the wind. Only a few years later a tree blade turbine was erected and this produced up to 65 kW, despite a smaller rotor diameter than the first turbine.
    • 11. Industry Industry The oil crisis in the 1970s really boosted the wind power market once again. During a 15 year period, all pioneers made all their inventions and theories available for all, allowing the successful development of wind power. It was in this period that some of the large companies that are still in the business were founded, such as Vestas and LM Wind Power.
    • 12. THANK YOU  THANK YOU SOURCE: https://www.renewableenergyworld.com/ugc/articles/2014/11/history-of-wind-turbines.html, http://windenergyfoundation.org/about-wind-energy/history/, https://www.lmwindpower.com/en/sustainability/learn-about-wind/history-of-wind