horizontal wind turbines vs vertical wind turbines - advantages and disadvantages

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Post on 17-Aug-2015

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  1. 1. Wind Turbines
  2. 2. Renewable energy Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale
  3. 3. Wind Energy Wind energy is useful form of energy converted from kinetic wind power Wind Energy is an indirect form of solar energy which can be used continuously unlike solar energy
  4. 4. Wind turbines Turbines can be categorized into two classes based on the orientation of the rotor
  5. 5. Vertical Axis turbines Turbines with rotary axis that are vertical New design concepts come to market on a regular basis.
  6. 6. Vertical Axis turbine examples
  7. 7. Vertical Axis turbine examples
  8. 8. Vertical Axis turbine examples
  9. 9. Vertical Axis turbine examples
  10. 10. Vertical Axis turbine examples
  11. 11. Advantages of being vertical o Omni-directional - accepts wind from any direction o Components can be mounted at ground level o lighter weight towers o ease of service
  12. 12. Disadvantages o Rotors generally near ground where wind is poorer o Poor self-starting capabilities o Requires entire rotor to be removed to replace bearings o Overall poor performance and reliability
  13. 13. Horizontal Axis turbines Turbines with rotary axis that are horizontal Old and time tested design that gets slight improvements constantly
  14. 14. Horizontal Axis turbine examples
  15. 15. Horizontal Axis turbine examples
  16. 16. Horizontal Axis turbine examples
  17. 17. Horizontal Axis turbine examples
  18. 18. Horizontal Axis turbine examples
  19. 19. How do they work?
  20. 20. Advantages o Old time tested design o Tall tower allows placement on uneven land or in offshore locations o Tall tower allows access to stronger wind o Ability to warp blades, which gives the turbine blades the best angle of attack
  21. 21. Disadvantages o Difficult to transport o Difficult to install o Local opposition to aesthetics and noise levels o Difficult maintenance
  22. 22. Vestas V164 8MW Current biggest wind turbine in the world
  23. 23. Key facts o Output of 8.0 MW enough to power over 13 000 homes
  24. 24. Key facts o Output of 8.0 MW enough to power over 13 000 homes o Height of 220 metres
  25. 25. Key facts o Output of 8.0 MW enough to power over 13 000 homes o Height of 220 metres o Blade length of 80 meters
  26. 26. Key facts o Output of 8.0 MW enough to power over 13 000 homes o Height of 220 metres o Blade length of 80 meters o Nacelle weight of around 390 tones
  27. 27. Key facts o Output of 8.0 MW enough to power over 13 000 homes o Height of 220 metres o Blade length of 80 meters o Nacelle weight of around 390 tones o Developed from the beginning as a off-shore solution