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8. Installation Sites For SkyWind NG
Seite 20
| Owners Manual SkyWind NG, Version 5.1
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This illustration shows an example of wind speeds above the
ground in certain areas. It illustrates how, to achieve the same
wind speed, very different hub heights have to be chosen.
Example for 6 m/s (22 kph):
City
= 12,5 m
Countryside
= 5 m
Coast
= 1 m
Aufstellungsort für laminare Windströmung:
8.1 Installation Site
Anywhere on earth the wind speed increases with every meter height above the ground. This is
caused by the friction of the wind on the earths surface, trees, houses etc.. This friction also
causes turbulence and uneven wind flow. This in turn reduces the amount of energy a wind
turbine can generate drastically. You should always install the SkyWind NG turbine at the place
with the best (free) wind flow.
Windenergy
is a cubic function of wind speed. In turn a small change in wind speed can have a
large effect on the energy generation. For this reason a wind turbine should NEVER be installed
below 8 m height. A turbine in 6 m height will generate about 80% less energy than a turbine in
10 m. Under 10 m the wind turbine can not be expected to generate serious amounts of ener-
gy. The wind turbine must also be higher than sorrounding buildings or trees.
Turbulent sites can not only reduce your energy yield, but also shorten the turbines life as the
turbulence creates harmful vibration. Make sure to choose a suitable site for your turbine!
Laminar
Turbulent
Not suitable
Main Wind Direction
City
Countryside
Coast
Height (m)
Installation Site For Laminar Flow Of Wind