Environmental Engineering Reference
In-Depth Information
200 km
Wind Power Classification for
Rural Power Applications
Wind
power
class
0
0
Poor
Useful
Good
Excellent
75
3.5-4.5
150
4.1-5.8
250
4.9-6.7
500
8.1-8.4
FIGURE 9.1
Wind power map for rural applications, Mexico. Notice difference in definition of wind power
class and height is at 30 m.
Region
of highly
turbulent
flow
2 H
H
2 H
20 H
FIGURE 9.2
Height of small wind turbine close to obstacles of height H.
20 H
High
turbulence
15 H
3% Speed decrease
2% Turbulence increase
0% Wind power decrease
10 H
6%
5%
17%
5 H
17%
20%
43%
FIGURE 9.3
Estimates of speed and power decrease and turbulence increase for flow over a building [2].
Estimates shown are for building height H.
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