Rutland 504 Windcharger Installation & Operation
Doc No: SM-150 Issue C 17.03.14 11 Marlec Eng Co Ltd
Siting the Windcharger
General Considerations
The location and height of the mounting pole or tower for your wind turbine will be the
major factor in the overall performance of your system.
The smooth flow of wind over land and water is often interrupted by a multitude of
obstructions causing wind sheer and turbulence.
Wind sheer
describes the interference between the fast moving upper air and the slow
moving air close to the ground and the resulting decrease in average wind speed as one gets
closer to the ground.
Turbulence
is caused by the wind passing over obstructions such as moored boats, trees and
buildings.
Both wind sheer and turbulence diminish with height and can be overcome simply by putting
the turbine sufficiently high above them. It is therefore essential that the wind generator
should be located in an area as free as possible from disturbed wind flow. Bear in mind that
downwind obstructions can be as detrimental to performance as upwind obstructions (Fig.6).
WIND DIRECTION
AREA OF TURBULENCE
20H
2H
2H
H
Fig 6
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