WIND POWER How does it work? Efficiency Advantages and Disadvantages

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Our alternative energy resource is Wind Power. Using wind turbines, the wind blows the blades of the turbine round, which turns a generator to produce.

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Presentation transcript:

WIND POWER How does it work? Efficiency Advantages and Disadvantages Amount of wind energy in use Residential Wind turbines Source: Roger Rivera, www.windpower.com

Wind Turbines: How they work Blades capture wind energy (Kinetic) and then use a generator to convert it to electrical energy. 3 blade design is most common because of stability. The design determines how efficient it will be. (Weight, blade pitch, number of blades, etc.)

Efficiency At most, wind turbines are about 60% efficient. The wind needs to blow at least 12 MPH to maximize efficiency for most designs. http://gcaptain.com/maritime/blog/wp-content/uploads/2008/10/wind-spiral-turbine.png

OTHER DESIGNS

Advantages of Wind Energy Renewable No pollutants Cost effective Less area used (compared to conventional power plants)

Disadvantages of Wind Energy Wind not consistent Noisy? Ugly? Wildlife? - Birds/Bats (NOT a Disadvantage) About 60,000 birds killed by wind turbines - About 100 million birds killed by cats

Amount of Electricity from Wind Enough electricity for 9.7 million homes. About 1/4 is produced in Texas. 2% of US electricity usage 8% in Texas

Wind power by state

Wind power by state

Wind power by state

Wind power by state

Residential Wind Power Residential wind turbine systems cost between $4000-$6000/KW. The average wind speed in Allen Texas is about 10.5 MPH. Not the optimal wind speed of 12MPH but will still produce sufficient electricity. Would take about 15 years to gain back initial investment from purchasing wind turbine. With the decreasing cost of wind power and the growing interest in renewable energy sources, prices should decrease for wind turbines in the future.