Vertical Axis Wind Turbine Power Estimation

  • #1
Hello,

Can some explain to me how to calculate the power coefficient of a vertical axis wind turbine.

If you explain the steps invloved would be great or any external file location where I could refer.

I have below information

1) Lift Coefficient.
2) Drag Coefficient.
3) Angle of attack.
4) Rotational Speed.
5) Airfoil Dimensions.

Furthermore, I know how to calculate the tangential force coefficient (Ct) as well. I have tried to calculate the power coefficient, but it gives me a value over 1.0 which is impossible.

Looking forward to hearing
 

Answers and Replies

  • #2
anorlunda
Staff Emeritus
Insights Author
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I would use a simpler calculation, estimating 50 to 100% of the maximum theoretical power given by Betz's Law. Which is the the turbine power must be less than 16/27 of the kinetic energy of the wind going through the turbine.

https://en.wikipedia.org/wiki/Betz's_law
 

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