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1. What is wind? 2.What makes the wind blow?.

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Presentation on theme: "1. What is wind? 2.What makes the wind blow?."— Presentation transcript:

1 1. What is wind? 2.What makes the wind blow?

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5 1920s 1940s

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8 The Future?

9 Wind Energy is the Fastest Growing Energy Source in the World!!

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11 Source: U.S. DOE Wind Potential

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14 Small ( 10 kW) Homes Farms Remote Applications (e.g. water pumping, telecom sites, icemaking) Large (250 kW - 2+MW) Central Station Wind Farms Distributed Power Intermediate ( kW) Village Power Hybrid Systems Distributed Power Different sizes for different amounts of energy.

15 Large Wind Turbines 328 base to blade Each blade 112 Span greater than tons total Foundation 20 deep Rated at 1.5 megawatt Supply at least 350 homes

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17 Why do wind turbines need to be high in the sky??

18 Wind Turbine Perspective Nacelle 56 tons Tower 3 sections Workers Blade 112 long foundation

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

23 US national average for modern turbines: One-two birds per turbine, per year US national average for modern turbines: One-two birds per turbine, per year Small relative to accepted human activities E.g. If all our power was from wind bird deaths would be only 10% of number of deaths caused by cats.

24 A good site for starters… on your crossword.


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