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European Tribune - Can the U.S. achieve 20% wind energy by 2030?

In addition, distributed wind technology is limited by the heights it can reach. The power of a wind turbine is related to wind speed cubed, and the higher the altitude you can reach, the higher the wind velocity you find, and the bigger the power payoff you therefore achieve

Surely Energy is related to velocity to the 3rd power?

Wait this is important. Someone is wrong on the Internet.

by generic on Thu May 15th, 2008 at 03:52:49 PM EST
Simple reasoning. For each wind particle its energy is proportional to its velocity squared.
E = 1/2 m * v^2 may be known from school.

The number of particles which hit the turbine in a given time t will be the area of the rotor times the velocity of the particles multiplied by the time t. So the number is proportional to another factor v, which means the overall energy is proportional to v^3

Der Amerikaner ist die Orchidee unter den Menschen
Volker Pispers

by Martin (weiser.mensch(at)googlemail.com) on Thu May 15th, 2008 at 04:36:03 PM EST
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