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Joshua Lee, Yuree Chu

Wind Power. Joshua Lee, Yuree Chu. Wind Energy?. What is wind power?. Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power and so on. Basic info. History of Wind Power.

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Joshua Lee, Yuree Chu

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  1. Wind Power Joshua Lee, Yuree Chu

  2. Wind Energy?

  3. What is wind power? Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power and so on.

  4. Basic info

  5. History of Wind Power

  6. History of Wind Power

  7. Now...

  8. Energy transformation • Solar energy heating Earth • Kinetic energy of air • kinetic energy of turbine • Electrical energy

  9. Wind Generator

  10. How does wind generator work?

  11. Efficiency of Wind Power

  12. Power by wind generator

  13. Limitation of wind power formula Wind power formula is an estimate because... a) Not all KE of wind is transformed into mechanical energy b) Wind speed varies over course of year c) Density of air varies with temperature d) Wind not always directed at 900 to blades

  14. Sample problems A wind turbine has a rotor diameter of 20 m and the speed of the wind is 25 m/s on a day when the air density is 1.3 kg/m3. Calculate the power that could be produced if the turbine is 30% efficient.

  15. Answer A wind turbine has a rotor diameter of 20 m and the speed of the wind is 25 m/s on a day when the air density is 1.3 kg/m3. Calculate the power that could be produced if the turbine is 30% efficient.

  16. Maximum amount of power It is impossible to extract this maximum amount of power from the air because of ... a) Speed of air... b) Frictional losses...

  17. Advantages of Wind Power 1. Renewable source of energy 2. Source of energy is free 3. No global warming effect – no CO2 emissions 4. No harmful waste products

  18. Disadvantages of Wind Power 1. Large land area needed to collect energy since many turbines are needed 2. Unreliable since output depends on wind speed 3. Site is noisy and may be considered unsightly 4. Expensive to construct

  19. ONE QUESTION...

  20. Why are turbines not placed near one another? a) Less KE available for next turbine b) Turbulence reduces efficiency of next turbine

  21. Future of Wind Power

  22. Is wind power the solution?

  23. Citation Informations • "Wind Energy Basics." Wind Energy Basics. Upper Great Plains Wind Energy Programmatic EIS, n.d. Web. 20 May 2013. <http://plainswindeis.anl.gov/guide/basics/index.cfm>. • http://liebhartphysics.weebly.com/ib-dp-physics.html • Hunter, John. "Wind Power Capacity Up 170% Worldwide from 2005-2009 » Curious Cat Science and Engineering Blog." Wind Power Capacity Up 170% Worldwide from 2005-2009 » Curious Cat Science and Engineering Blog. N.p., 15 July 2010. Web. 20 May 2013. <http://engineering.curiouscatblog.net/2010/07/15/wind-power-capacity-up-170-worldwide-from-2005-2009/>. • http://exploringgreentechnology.com/wind-energy/how-does-wind-energy-work/ • "How Does a Wind Turbine Produce Electricity? - Global Wind Day." Global Wind Day. EWEA, n.d. Web. 20 May 2013. <http://www.globalwindday.org/faq/how-does-a-wind-turbine-produce-electricity/>.

  24. Citation Images • http://plainswindeis.anl.gov/guide/basics/index.cfm • http://lucidmz.blogspot.kr/2011/06/fine-fine-wind-that-takes-its-course.html • http://s3.freefoto.com/images/39/12/39_12_52_web.jpg • http://www.northernsound.ie/wp-content/uploads/2013/05/WINDENERGY.jpg • www.funnyjunk.com • http://pac-ibphys.wikispaces.com/file/view/wind_power._jpg/56923696/640x376/wind_power._jpg • http://3.bp.blogspot.com/-qB1FScnjpxo/T1QUHm005EI/AAAAAAAAAr0/bCWH36L2pYY/s1600/Sails.jpg • http://climate.uu-uno.org/topics/view/46924/ • http://sppiblog.org/tag/wind-energy • https://upload.wikimedia.org/wikipedia/commons/5/5b/Shirley_Windmill.jpg • http://www.homepower.com/sites/default/files/uploads/4_SB_siting.jpg • http://engineering.curiouscatblog.net/2010/07/15/wind-power-capacity-up-170-worldwide-from-2005-2009/ • http://www.cleanmpg.com/photos/data/501/first_wind_turbine.jpg • http://media.cagle.com/95/2012/08/16/117012_600.jpg

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