Wind energy
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by: admin
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Date: May 2011 Time:
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Wind energy is one of the renewable sources of energy, extremely popular and useful in the modern industry. Energy is acquired with a help of special wind turbines. Turbines convert mechanical energy into electricity. Wind energy is also used in tall ships.
The wind energy is primarily associated with windmills. It is known since the days of Hammurabi, when it was used for water pumping and drainage fields. Initially, the rotation axis was vertical, horizontal setting was introduced in 1105 years, and is still used.
Most wind energy is produced by Germans, as much as 40% of world production.
Wind turbines have both opponents and supporters. Some, criticize the construction of such facilities in the vicinity of the houses due to high intensity of noise, which is caused by the turbine. The aesthetic considerations and the threat to birds is also a decisive factor. Cluster of wind turbines may also contribute to changes in local climate. However, a great advantage of wind power is the reduction of emissions of harmful carbon dioxide into the atmosphere. The turbines generate electricity without combustion of any fuel. Greenpeace reports predict that by 2020 wind turbines will produce over 10% of the total electricity.
Cost-effectiveness of wind power plant construction is associated with the terrain and the location of the construction in the area. Windless areas categorically disqualify start of such an investment.
Increasingly popular building a backyard wind turbine is becoming. Turbines are commonly installed on the roof of the house. This gives an additional power source. The cost of building such a plant ranges from 15 thousand. However, its cost-effectiveness requires the right conditions, a constant wind with a force of at least 5 m/s. House should also be very well insulated.
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