Project Y
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Project Y
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closE to thE wind<br />
A wind turbine consists of a tower, a machine house with generator and of<br />
rotor blades. A wind power station produces energy by changing the wind<br />
force into a torsional moment (turning force) acting on the rotor blades.<br />
The generator changes mechanical energy into electrical energy. The volume<br />
of energy transferred onto the rotor by the wind depends on air density,<br />
the area of the rotor blades and wind speed. Wind speed increases the<br />
energy yield almost at the power of three. The efficiency factor is between<br />
25 % and 30 %, in theory even 70 %.<br />
A certain infrastructure is necessary to set up a wind turbine. Its huge<br />
components must be brought to their final destination. The manufacturer‘<br />
logistics department takes care of that. Before a wind turbine is sold<br />
experts check out access roads in detail (particularly the radius of turns).<br />
Wind turbines are usually transported by ship when they leave the manufacturer.<br />
Transportation then continues by truck.<br />
WhAt deterMines the loCAtion oF A Wind turBine?<br />
The wind speed of a specific location is the<br />
most important criterion. There are so-called<br />
wind charts that depict the wind regime, particularly<br />
wind speed. These allow a first evaluation<br />
of the suitability of a location. Topography<br />
is the most determining factor for wind<br />
speed. The surface of the water allows high,<br />
undamped wind speeds. Topographically varied<br />
environments not only cause a lower mean<br />
wind speed but also influence wind direction.<br />
The topographical influence becomes less and<br />
less the higher one goes above ground level.<br />
Wind speed increases the most 100 metres<br />
above ground. The wind speed at the hub is<br />
gondola<br />
it contains the<br />
wind turbine‘s entire<br />
machine unit<br />
rotor Blades<br />
made of preimpregnated expoxy<br />
fibre glass/carbon fibre<br />
rotor<br />
Diameter: 90 m<br />
Weight: 36 t<br />
tower<br />
Height: 100 m<br />
Weight: 255 t<br />
23<br />
the most important factor for a wind turbine.<br />
The distance to a transfer point for energy<br />
produced is another criterion for the choice of<br />
a location. Wind conditions are measured for at<br />
least a year once a location has been selected<br />
to have full data and certainty on the actual<br />
wind regime of that location.
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