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Wind turbines Power Point Presentation

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Wind Turbines Power Point Presentation
Md. Rimon Mia
Bangladesh University

Veröffentlicht in: Bildung

Wind turbines Power Point Presentation

  2. 2. What is the Wind Turbines? A wind turbine is a rotating machine which converts the kinetic energy in wind into mechanical energy. The mechanical energy can be converted into electrical energy, or it can be used to pump water or grind crops. If it is used to make electricity, it can be called a wind turbine, but if it is used to grind or pump, it is called a windmill.
  3. 3. Schematic Diagram Wind Turbine
  4. 4. How do the work ?  A wind turbine converts the wind’s kinetic energy into electrical energy. It comprises the following elements: 1. A tower, about 80 to 90 meters high, in order to harness stronger winds at a higher altitude.
  5. 5. How do the work ? 2. A nacelle, which turns to orient the machine in the optimal direction. 3. It houses the main components of the wind turbine.
  6. 6. How do the work ? 4. And a 3-bladed rotor which can measure 100 meters or more in diameter such as the Halide 150 with its 150-metre diameter rotor.
  7. 7. How do the work ? 5. When the wind blows, the blades spin the rotor which in turn rotates the shaft fitted to the nacelle. 6. This driveshaft is connected to a generator. This rotational energy will enable the production of electricity.
  8. 8. How do the work ? 7. Subsequently, a transformer located inside the nacelle or tower rises the current voltage. 8. This allows it to be transported more efficiently via the electrical grid power lines.
  9. 9. How do the work ? 9. In order to function a wind turbine needs a minimum wind speed of 10 to 15 kph & for safety reasons, a wind turbine will automatically stop when wind speed exceeds 90 kph.
  10. 10. How do the work ? 10. The power provided by a wind turbine increases exponentially to wind speed. 11. Winds of 30 kph are 8 times more productive than winds of 15 kph. 12. Hence the location of the wind turbine is key. To harness the wind in the best possible way, equipment is integrated into the nacelle to continually measure the wind speed and direction.
  11. 11. How do the work ? 13. This enables the wind turbine to be optimally oriented into the wind and to modify the rotor blade angle. 14. There are two main categories of wind turbines: onshore & offshore
  12. 12. How do the work ? 15. OFFSHORE: The installation of offshore wind turbines, usually installed some 10 kms or more off the coast, at a seabed depth of 25 to 30 meters , is more costly.
  13. 13. How do the work ? 16. The foundation and tower must be able to withstand the force of the waves & connection to the electrical grid means laying underwater cables. 17. On the other hand, more regular winds enable the generation of typically 6MW of electricity compared to
  14. 14. How do the work ? 18. Modern wind turbines operate with an efficiency in the range of 20% to 50%. 19. This is an excellent level of efficiency, since the “Fuel” of a wind turbine is free.
  15. 15. Advantage of Wind Turbine 1. Wind energy is friendly to the surrounding environment, as no fossil fuels are burnt to generate electricity form wind energy. 2. Wind turbines take up less space than the average power station. 3. Newer technologies are making the extraction of wind energy much more efficient. 4. Wind turbines are a great resource to generate energy in remote locations, such as mountain communities and remote countryside. 5. When combined with solar electricity, this energy source is great for developed and developing countries to provide a steady, reliable supply of electricity. 6. Birds face many hazards but wind turbines only cause 0.01% of bird fatalities
  16. 16. Disadvantage of Wind Turbine 1. The main disadvantage regarding wind power is down to the winds unreliability factor. 2. Wind turbines generally produce allot less electricity than the average fossil fuelled power station. 3. Wind turbine construction can be very expensive and costly to surrounding wildlife during the build process. 4. The noise pollution from commercial wind turbines is sometimes similar to a small jet engine. 5. This is fine if you live miles away, where you will hardly notice the noise, but what if you live within a few hundred meters of a turbine 6. This is big Disadvantage of wind collisions with buildings cause 58% of fatalities!
  17. 17. Wind Turbine Compare of Solar Panel  We have harnessed wind for thousands of years: 1. Transport 2. Agriculture 3. Power Wind turbine blades rotate at 15-20 rpm generating electricity Providing power to the national grid-----powering local homes and businesses A wind turbine uses less than 1 acre of land 1 substation 1 crane pad The land can still be farmed right up to the turbine base. Wind turbines spin 70-80% of the time The UK is the windiest county in Europe—receiving 40% of wind…The UK has 1 turbine per 100 km2 Germany has 7 Denmark has 11
  18. 18. Wind Turbine Compare of Solar Panel 1 Wind=1219 Homes 1 Wind=13,479 fridges 1 Wind=2,80,00,000 kettles boiled 1 Wind=16,000 solar panels High Light: Which is enough to cover Manchester United’s football pitch 4 Times 100% Successfully.  Companies can benefit from Wind Power • Reduced energy costs • Long-term energy price security • Materially reduced carbon footprint  At present in UK 7 in 10 people support wind power, rising to 79% aged 18-44 & 88% of scots want a future based on renewables.
  19. 19. Example in Bangladesh
  20. 20. Published on The Daily Prothom-alo 26.12.2014 সেরা দশ অগ্রগতির মধ্য যা েপ্তম
  21. 21. Have You Any Question ?
  22. 22. Thanking Everybody