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Windpower

Windpower. The contribution of Renewable Energy Sources to the world energy suply in 2040 – Projections in Mtoe. Growth rates of diferent technologies in EREC Scenario. Actual. Projected. Rest of World. Rest of World. North America. North America. Europe. Europe.

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Windpower

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  1. Windpower

  2. The contribution of Renewable Energy Sources to the world energy suply in 2040 – Projections in Mtoe

  3. Growth rates of diferent technologies in EREC Scenario

  4. Actual Projected Rest of World Rest of World North America North America Europe Europe Growth of Wind Energy Capacity Worldwide Jan 2006 Cumulative MW = 56,813 Rest of World = 7,270 North America = 9,550 Europe = 39,993 MW Installed Sources: BTM Consult Aps, Sept 2005 Windpower Monthly, January 2006

  5. Windpower

  6. Windturbine’s structure 1. Base 2. Tower 3. Nacelle

  7. Windturbine’s structure 1. Blades 2. Rotor 3. Pitch 4. Brake 5. Low-speed shaft 6. Gear box 7. Generator 8. Controller 9. Anemometer 10. Wind Vane 11. NaceIIe 12. High-speed shaft 13. Yaw drive 14. Yaw motor 15. Tower

  8. The Schematic of Wind Turbine

  9. How does the WIND TURBINE work?

  10. Angle of attack a Velocity How does the WIND TURBINE work? Middle line Cord http://www.pagendarm.de/trapp/programming/java/profiles/NACA4.html

  11. Lift FL Drag FD How does the WIND TURBINE work? c

  12. Pressure distribution around an airfoil How does the WIND TURBINE work? - Pressure along the upper surface DH 0 Pressure along the lower surface +

  13. w Relative velocity = V V U How does the WIND TURBINE work? Wind velocity = C Peripheral velocity = U C

  14. Torque FL Trust FD How does the WIND TURBINE work? U V C

  15. U V C Torque Trust How does the WIND TURBINE work? U V Torque C Trust

  16. C Fthrust w M’torque How does the WIND TURBINE work? Torque Trust F’thrust M’thrust

  17. The physical limits of the transform of wind energy v1 [m/s] — Windspeed, in front of blade v2 [m/s] — Windspeed, behind the blade v [m/s] — Windspeed, trough the blade F [m2] — Blade’s covering area  [kg/m3] — air density N [W] — Power of wind mill

  18. The physical limits of the transform of wind energy és

  19. Wind Turbine Power Basics Power in the Wind = ½ρAV3 A - Area of the circle swept by the rotor ρ = Air density V = Wind Velocity Wind Turbine Power Curve

  20. Functioning of a windmill Isolated working method In isolated working method the energy doesn’t goes in the national electric network. The produced electricity is used only locally. Such a places are not connected to national electric network. In e.g.: farms, hunter cottage, workshops. Intake working method The produced electricity is intaken to the national electric network or to the local electric distributor network. The electric Power Co. pays for the so produced electricity.

  21. Functioning of a Windturbine • Intake working method

  22. Hungary first windturbine’s major technological datas

  23. Schematic of Wind Plant At it’s simplest, the wind turns the turbine’s blades, which spin a shaft connected to a generator that makes electricity. Large turbines are grouped together to form a wind power plant, which feeds electricity to the grid.

  24. Offshore GE Wind Energy 3.6 MW Prototype Boeing 747-400

  25. Deep Water Wind Turbine Development Current Technology

  26. Offshore Wind – U.S. RationaleWhy Go Offshore? US Wind Resource US Population Concentration % area class 3 or above Graphic Credit: Bruce Bailey AWS Truewind Graphic Credit: GE Energy Windy onshore sites are not close to coastal load centers The electric utility grid cannot be easily set up for interstate electric transmission Load centers are close to the offshore wind sites

  27. U.S. Offshore Wind Energy Opportunity U.S. Offshore Wind Energy Resource U.S. Department of Energy National Renewable Energy Laboratory Resource Not Yet Assessed

  28. Typical Offshore Wind Farm Layout Cable Laying Ship

  29. Location of Existing Offshore Installations Worldwide Source: Wind Directions, September 2004 804-MW Installed Dec 2005

  30. Horns Rev Wind Farm - Denmark Country: DenmarkLocation: West CoastTotal Capacity: 160 MWNumber of Turbines: 80Distance to Shore: 14-20 kmDepth: 6-12 mCapital Costs: 270 million EuroManufacturer: VestasTotal Capacity: 2 MWTurbine-type: V80 - 80m diameter Hub-height: 70-mMean Windspeed: 9.7 m/sAnnual Energy output: 600 GWh

  31. Wind Turbine Size

  32. Arklow Banks Windfarm The Irish Sea Photo: R. Thresher

  33. Fixed Bottom Substructure Technology Proven Designs Future Gravity Foundation Monopile Foundation Tripod/Truss Foundation • No wind experience • Oil and gas to 450-m • Larger footprint • Most Common Type • Minimal Footprint • Depth Limit 25-m • Low stiffness • Larger Footprint • Depth Limit? • Stiffer but heavy Graphics source: http://www.offshorewindenergy.org/

  34. Future Concepts Commercialization is long term

  35. Credit: GE Energy Photo: Elsam Credit: GE Energy Offshore Wind Turbine Access

  36. RePower 5-MW - Worlds Largest Turbine • 5-MW Rating • 61.5-m blade length (LM Glasfibres) • Offshore Demonstration project by Talisman Energy in Beatrice Fields • 45-m Water Depths • Two machines

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