Rutland FM1803-2
Installation & Operation
Document No: SM-146 Issue D 14.03.08
Marlec Engineering Co Ltd
5
SITING THE WINDCHARGER
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 trees and
buildings. Both wind sheer and turbulence diminish with height and can be
overcome simply by putting the machine 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.1).
WIND DIRECTION
AREA OF TURBULENCE
20H
2H
2H
H
Fig.1
