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Wind power PRESENTATION

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ITS ABOUT THE ALTERNATE ENERGY SOURCE WIND AND ITS APPLICATIONS

Published in: Engineering
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Wind power PRESENTATION

  1. 1. 1 Wind Energy A Renewable Source of Energy Presentation By Sanjana and Alekhya 2nd Year EEE Department BVRIT Hyderabad
  2. 2. 2 Renewable Energy  Energy is basically classified into 2 categories.  Renewable and Non Renewable.  Non Renewable sources are Coal, Petrol etc...  Renewable Sources are Solar, Biomass, Wind, Water etc…
  3. 3. 3 Wind Energy Outline  History  Context  Working  Advantages  Site Selection  Disadvantages  Economics Improvement  Future
  4. 4. 4 Wind Energy History  1200 to 1850  Golden era of windmills started in western Europe – 50,000  1850’s  Multiblade turbines for water pumping made and marketed in U.S  1850 – 1930  As many as 6,000,000 units installed in US Midwest  1936+  US Rural Electrification Administration extends the grid to isolated rural sites.  Grid Electricity rapidly displaced multiblade turbines
  5. 5. Wind Energy - What is it?  All renewable energy (except tidal and geothermal power), ultimately comes from the sun.  The earth receives 1.74 x 1017 watts of power (per hour) from the sun.  About one or 2 percent of this energy is converted to wind energy (which is about 50-100 times more than the energy converted to biomass by all plants on earth).  Differential heating of the earth’s surface and atmosphere induces vertical and horizontal air currents that are affected by the earth’s rotation and contours of the land  WIND. Ex: Land Sea Breeze Cycle
  6. 6. Windmill Design  A Windmill captures wind energy and then uses a generator to convert it to electrical energy.  The design of a windmill is an integral part of how efficient it will be.  When designing a windmill, one must decide on the size of the turbine, and the size of the generator.
  7. 7. 8 Increasingly Significant Power Source Wind could generate 6% of nation’s electricity by 2020.Wind currently produces less than 1% of the nation’s power. Source: Energy Information Agency
  8. 8. 9 Advantages of Wind Power  Environmental Benefits  Economic Development Benefits  Fuel Diversity & Conservation Benefits  Cost Stability Benefits
  9. 9. 10 Pollution from Electric Power 23% 28% 33% 34% 70% 0% 20% 40% 60% 80% Toxic Heavy Metals Particulate Matter Nitrous Oxides Carbon Dioxide Sulfur Dioxide Percentage of U.S. Emissions Electric power is a primary source of industrial air pollution
  10. 10. 11 Density = P/(RxT) P - pressure (Pa) R - specific gas constant (287 J/kgK) T - air temperature (K) = 1/2 x air density x swept rotor area x (wind speed)3 ρ A V3 Area = π r2 Instantaneous Speed (not mean speed) kg/m3 m2 m/s Power in the Wind (W/m2 )
  11. 11. 12 Site Selection Technical Factors affecting site selection:  High Average annual wind speed  Low Cost of Construction  Close Distance from Utility line or customers  Prevailing wind Direction  Surface Roughness  Obstacle Height, Dis >5OH, OH, <0.5HH
  12. 12. 13 Disadvantages  Birds - A Serious Obstacle  Noise Disturbances  Cost of Wind Turbine  Threat to Wildlife  Wind Can Never Be Predicted  Suited To Particular Region  Visual Impact
  13. 13. 14 Wind Energy Natural Characteristics  Wind Speed  Height  Air density  Blade swept area
  14. 14. 15 Turbines Constantly Improving  Larger turbines  Specialized blade design  Power electronics  Computer modeling  Produces more efficient design  Manufacturing improvements
  15. 15. 16 Improved Capacity Factor  Performance Improvements due to:  Better sitting  Larger turbines/energy capture  Technology Advances  Higher reliability  Capacity factors > 35% at good sites  Examples (Year 2000)  Big Spring, Texas  37% CF in first 9 months  Springview, Nebraska  36% CF in first 9 months
  16. 16. 17 Expectations for Future Growth  20,000 total turbines installed by 2010  6% of electricity supply by 2020  India now ranks as a “wind superpower” having a net potential of about 45000 MW only from 13 identified states. 100,000 MW of wind power installed by 2020
  17. 17. 18 The Future of Wind - Offshore • 1.5 - 6 MW per turbine • 60-120 m hub height • 5 km from shore, 30m deep ideal • Gravity foundation, pole, or tripod formation • Shaft can act as artificial reef • Drawbacks- T&D losses (underground cables lead to shore) and visual eye sore
  18. 18. 19
  19. 19. 20 Ancient Resource Meets 21st Century
  20. 20. Thank you Any Queries ?? Project Guide: COL Dr. SURENDRA Visionary Lighting and Energy INDIA Ltd.

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