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WIND ENERGY

WIND ENERGY. Introduction. What is wind energy? – energy generated from wind Wind energy electrical energy Renewable source of energy Underutilized – accounts for only 1.5% of total energy used in the world (Merz 2008, p. 46) Poised to become dominant form of energy in future.

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WIND ENERGY

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  1. WIND ENERGY

  2. Introduction • What is wind energy? – energy generated from wind • Wind energy electrical energy • Renewable source of energy • Underutilized – accounts for only 1.5% of total energy used in the world (Merz 2008, p. 46) • Poised to become dominant form of energy in future

  3. Historical use of wind energy • Its use dates back to 5,000 years ago (Righter, 2006, p. 35) • Use decrease with invention of water and fossil energies • More developments in 19th and 20th century

  4. Cont… • Modern development – from 1970s with discovery of turbines in Denmark • The picture aside shows a a wind turbine

  5. Power generation from wind energy • Basic electricity generation like in water and fossil energy • Wind speed – areas of high and low speed wind which turn the turbine

  6. Cont.. • Turbines – located in wind farms • A wind farm has several turbines which generate power • Should be located in areas without distraction

  7. Cont.. • Wind farm – connected to power collection system • Electricity flow - wind farm to substation (Zavadi, 2005, p. 52) • Excess power – fed to national grid • Set back – intermittency due to wind variation • Solution – Pumped storage hydroelectricity

  8. Cont.. • Wind turbine site – determine total power output (Demeo et al., 2005, p. 32) • Suitable site – raise areas with no distractions • Close to transmission lines • Other considerations - land use use, cost of land, environmental impact (Gipe 2008, p. 95)

  9. Current Usage of Wind Energy • World output - 121,188 MWp • 55% of the total wind turbines, are located in Europe (Merz, 2008, p. 6) • 81% of the total wind usage in the world in United States and Europe • Since 2000 output has quadrupled • By 2010, total output will be 160GW

  10. Cont.. • Country output: • Denmark – 1/5th of the total energy demand (Mason 2008, p. 17) • United States – Leading producer with 16.8 GW output

  11. Cont.. • Australia – 6 wind farms with 756 turbines (IEA, 2009, p. 13) • Generates 1,300 megawatt which equals 1.35 of total energy consumption • The graph aside show geographical distribution

  12. Cont.. • Most countries promoting wind energy in remote areas (Righter 2006, p. 325) • Companies and homes erecting turbines • Small scale wing power generators at homes • Wind farms as financial ventures (Righter 2006, p. 375)

  13. Advantages • Environmental friendly (Perry, 2009) • Cheap compared to other sources • Renewable (U.S Department of Energy, 2008) • Readily available in the environment • Economical on land use • Economical venture

  14. Disadvantages • High initial cost (Perry, 2009) • Noise pollution (Energy Kidds, 2009) • Danger to flying mammals • Impact on landscape (U.S Department of Energy, 2008). • It is unpredictable

  15. Conclusion • Wind energy - use of wind power to generate electricity from wind turbines • Gained increasing use since 1970 • Preferred because it is renewable, cheap, and friendly to the environment • However its costly and not reliable due to intermittency • wind energy is the future source of energy for the world

  16. Bibliography • Demeo, E., Grant, W., Milligan, R., & Schuerger, M 2005, Wind plant integration. Power and Energy Magazine, Vol. 6, Issue 6 • Energy Kidds, 2009, Wind Energy, Retrieved 6th October 2009 from http://tonto.eia.doe.gov/kids/energy.cfm?page=wind_home-basics • Gipe, P 2008, Wind energy basic: A guide to small and micro wind systems, Chelsea Green Publishing • IEA, 2009, Wind Energy: Annual Report 2008, International Energy Agency, 2009 • Merz, S 2008, Renewable generation and implication on development, BERR Publications • Perry, Z 2009, Advantages and disadvantages of wind power, Retrieved 6th October 2009 from http://hubpages.com/hub/advantages-disadvantages-wind • Righter, R 2006, Wind energy in America, Macmillan • U.S Department of Energy, 2008, Advantages and disadvantages of wind energy, Retrieved 6th October 2009 from http://www1.eere.energy.gov/windandhydro/wind_ad.html • Zavadi, R 2005, Making connection, IEE, Vol. 3

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