In areas where there is no electricity supply network or its functioning is poor, wind turbines (or wind power plants) is an alternative worthy of taking into account. In recent years, the global production of electricity using wind power has increased by 10%.
What Are Wind Turbines?
Wind turbines are completely ecological systems because they use renewable sources, namely wind power. In addition, when put into operation, magnetic wind turbines produce no fumes, gases or harmful debris.
Their efficiency is proven in time, but anyway, they cannot prove efficacy than in conditions where wind speed is about 11 to 13 m / s. If it drops to half the power turbine also decreases, but about 8 times.
Wind Turbine Types
For individual consumption are recommended wind turbines from 200 W to 3.2 kW. Depending on the available land and climate, you can choose between several models.
Horizontal axis turbine has rotor and generator power at the top of the tower and should be aligned with the wind direction. Small turbines are oriented using a fin and big ones using sensors and servomotors to align on the wind direction.
Most modern wind turbines are of the horizontal-axis wind turbines (HAWT) type. This means that the rotation axis of the rotor is horizontal, placed on top of the tower, with the propeller blades positioned at a safe distance from the tower, in front of the wind.
But there are also horizontal axis turbines, which have the rotor placed behind the tower. Such turbines have the advantage that the propeller blades are turning automatically and can bend, reducing their surface that opposes the wind speeds. But they are quite unreliable so that they are used only in special cases.
Vertical axis turbines have more sophisticated generator and all components placed at the base so that the installation and maintenance is simplified. These turbines are always aligned with the wind direction so there is no need to adjust them, but their position near the ground decreases their efficiency. Another disadvantage is the fact that vertical axis turbines do not turn themselves, mostly using the generator as a motor.
Experts recommend that turbines to be very well anchored in the soil. As their sizes are larger, the more need for additional accessories that support the entire assembly.
For extra safety it is important that your home be equipped with an alternative energy source such as a generator, which will replace the turbines when needed.
One of the advantages is that wind turbines do not require regular maintenance and this represents significant savings in the budget, because there is no need to turn to specialists for periodic revisions.