Wind Power Density
Estimates of wind power density are presented as wind class, ranging from 1 to 7. The speeds are average wind speeds over the course of a year, although the frequency distribution of wind speed can provide different power densities for the same average wind speed.
| Class | 10 m (33 ft) | 30 m (98 ft) | 50 m (164 ft) | |||
|---|---|---|---|---|---|---|
| Wind power density (W/m2) | Speed m/s (mph) | Wind power density (W/m2) | Speed m/s (mph) | Wind power density (W/m2) | Speed m/s (mph) | |
| 1 | 0 - 100 | 0 - 4.4 (0 - 9.8) |
0 - 160 | 0 - 5.1 (0 - 11.4) |
0 - 200 | 0 - 5.6 (0 - 12.5) |
| 2 | 100 - 150 | 4.4 - 5.1 (9.8 - 11.5) |
160 - 240 | 5.1 - 5.9 (11.4 - 13.2) |
200 - 300 | 5.6 - 6.4 (12.5 - 14.3) |
| 3 | 150 - 200 | 5.1 - 5.6 (11.5 - 12.5) |
240 - 320 | 5.9 - 6.5 (13.2 - 14.6) |
300 - 400 | 6.4 - 7.0 (14.3 - 15.7) |
| 4 | 200 - 250 | 5.6 - 6.0 (12.5 - 13.4) |
320 - 400 | 6.5 - 7.0 (14.6 - 15.7) |
400 - 500 | 7.0 - 7.5 (15.7 - 16.8) |
| 5 | 250 - 300 | 6.0 - 6.4 (13.4 - 14.3) |
400 - 480 | 7.0 - 7.4 (15.7 - 16.6) |
500 - 600 | 7.5 - 8.0 (16.8 - 17.9) |
| 6 | 300 - 400 | 6.4 - 7.0 (14.3 - 15.7) |
480 - 640 | 7.4 - 8.2 (16.6 - 18.3) |
600 - 800 | 8.0 - 8.8 (17.9 - 19.7) |
| 7 | 400 - 1000 | 7.0 - 9.4 (15.7 - 21.1) |
640 - 1600 | 8.2 - 11.0 (18.3 - 24.7) |
800 - 2000 | 8.8 - 11.9 (19.7 - 26.6) |
Read more about this topic: Wind Profile Power Law
Famous quotes containing the words wind and/or power:
“To be shelterless and alone in the open country, hearing the wind moan and watching for day through the whole long weary night; to listen to the falling rain, and crouch for warmth beneath the lee of some old barn or rick, or in the hollow of a tree; are dismal things—but not so dismal as the wandering up and down where shelter is, and beds and sleepers are by thousands; a houseless rejected creature.”
—Charles Dickens (1812–1870)
“Just what is the civil law? What neither influence can affect, nor power break, nor money corrupt: were it to be suppressed or even merely ignored or inadequately observed, no one would feel safe about anything, whether his own possessions, the inheritance he expects from his father, or the bequests he makes to his children.”
—Marcus Tullius Cicero (106–43 B.C.)