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Audrey's Wind Book

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Audrey's Wind Book - Page Text Content

FC: Wind Power

1: Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. Although wind produces only about 1.5% of worldwide electricity use, it is growing rapidly, having doubled in the three years between 2005 and 2008. Wind power accounts for approximately 19% of electricity production in Denmark, 10% in Spain and Portugal, and 7% in Germany and the Republic of Ireland in 2008.

2: How Wind Turbines Work Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface and the rotation of the earth. Wind flow patterns are modified by the earth's terrain, bodies of water and vegetation. y. The terms wind energy or wind power describe the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity.

3: TURBINES SPIN at the New Mexico Wind Energy Center, located 170 miles southeast of Albuquerque and 20 miles northeast of Fort Sumner. | A wind energy resource map shows the best places in the world to farm the wind.

4: A wind turbine is a machine that converts the kinetic energy in wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine is usually called a windmill. If the mechanical energy is converted to electricity, the machine is called a wind generator, or more commonly a wind turbine (wind energy converter WEC).

6: Horizontal-Axis Wind Turbines

7: Vertical- Axis Wind Turbines

9: The search for alternate source for energy is ready for a crusade and wind turbines have provided sublime hope as well. Whenever we think about wind turbines, we visualize them to be huge, but what makes the Enercon E-126 different is the fact that it is the world’s largest wind turbine. Ready to light up almost 5,000 homes with only four of these, the Enercon E-126 can produce over 7 megawatts of energy. And assuming each household consumes up to 938 kwh per month, one of these wind turbines can light up 1776 homes. Lets take a take a look at its features.

11: How Does a Wind Turbine Work? Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity. Wind turbines are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more above ground, they can take advantage of faster and less turbulent wind. Wind turbines can be used to produce electricity for a single home or building, or they can be connected to an electricity grid (shown here) for more widespread electricity distribution.

13: Wind turbines are used to generate electricity from the kinetic power of the wind. Historical they were more frequently used as a mechanical device to turn machinery. There are two main kinds of wind generators, those with a vertical axis, and those with a horizontal axis. Wind turbines can be used to generate large amounts of electricity in wind farms both onshore and offshore.

14: The main work of wind turbines is to utilize the energy of wind and convert it into electricity; stronger wind is considered good for electricity production. But the speed of wind should not be too strong because it makes turbines spin too fast and in this process it commits suicide! Why is it so? Because turbine blades get ripped off by stronger winds – excessive heat damages the alternator. Turbine tower too can't remain unaffected by the strong wind. To prevent all this damage a mechanical breaking system furling is generally used. This method prevents wind turbine from spinning too quickly by turning the blades away from the direction of the wind. Furling can be manual or automatic with same goal i.e. turning the turbine blade edges into the wind when the wind is dangerously strong and stormy.

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  • By: Karen M.
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  • Title: Audrey's Wind Book
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  • Published: almost 10 years ago