View Single Post
Old 01-08-11, 01:44 PM   #8
Ryland
Master EcoRenovator
 
Join Date: Mar 2009
Location: Western Wisconsin.
Posts: 913
Thanks: 127
Thanked 82 Times in 71 Posts
Default

Quote:
Originally Posted by Xringer View Post
Instead of double the force (with x2 wind speed), we got almost 4 times the force..

One of the reasons you get much better MPG driving at 30 instead of 60..
As I understand it the energy in the wind is cubed with wind speed not squared, that is why if you look at the power output of turbines they give a 11mph output and a 12mph output and the 12mph tends to be around 3/4 more, one chart that I looked at gave the force on the top tip of the blade of a wind turbine that had around a 20' rotor at nearly twice the force as the bottom tip of the blade saw if it was on to short of a tower, this kind of imbalance tends to cause vibration and rip wind turbines appart.
Ryland is offline   Reply With Quote