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Wind energy


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Wind Turbine

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Wind energy

  1. 1. Wind Energy
  2. 2. What is it? <ul><li>Wind Energy is kinetic energy from the wind that can be directly converted to electrical or mechanical energy by reacting to the atmospheres pressure slope. </li></ul><ul><li>The wind mill was invented in 200 BC in China and was used to pump water and grind grain </li></ul><ul><li>In modern day the wind energy has doubled through the years </li></ul>
  3. 3. How it works? <ul><li>Wind is caused by differences in the air’s temperature </li></ul><ul><li>In the day time the wind blows over the land and at night the wind reverses and blows over the water </li></ul><ul><li>Wind is used to generate energy </li></ul>
  4. 4. Wind turbines <ul><li>Wind turbines collects kinetic energy from the wind from blades similar to planes </li></ul><ul><li>The wind glides over the blades and creates lift and turns the blades </li></ul><ul><li>The blades are connected to a rotating shaft that is connected to an electric generator that makes electricity </li></ul>
  5. 5. Types of wind turbines <ul><li>Horizontal-axis Turbines- typically 20 stories tall and have 3 blades that are 200 feet long </li></ul><ul><li>Vertical-axis Turbines- Blades that span from the top to the bottom and resembles an egg beater. It typically stands 100 feet tall and 50 feet wide </li></ul><ul><li>Vertical-axis turbines are less common than the horizontal-axis turbine </li></ul>
  6. 6. Wind turbines locations <ul><li>Wind turbines are located where there is wind created such as tops of smooth rounded hill , open plains and shore lines also mountain gaps that produce wind </li></ul><ul><li>20% of the world power is produced from wind </li></ul><ul><li>The US uses wind power the most </li></ul><ul><li>Wind turbines are pooled into areas called wind farms that are gridded areas to put wind energy </li></ul>
  7. 7. Pros of wind turbines <ul><li>Clean source of energy </li></ul><ul><li>Fewer environmental impacts than other sources of power </li></ul><ul><li>Don’t pollute water or air </li></ul><ul><li>Reduce the use for fossil fuels </li></ul><ul><li>Give extra incomes to farmers and businesses that help them stay in business </li></ul>
  8. 8. Cons of wind turbines <ul><li>Unappealing to the eye </li></ul><ul><li>Noisy </li></ul><ul><li>Can catch on fire and leak though it is rare </li></ul><ul><li>Birds and bats get hit and die </li></ul>
  9. 9. Citations <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul>