Vertical Axis Wind Turbine, VAWT

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Vertical Axis Wind Turbines, VAWT Vertical Axis Wind Turbines     VAWT Similar to those three bladed "aerofoil lift" horizontal wind turbines     Silly.     Illogical.     Waste-of-space. They are silly, illogical, and a waste-of-space. Go back to graphs on our Aerodynamics Characteristics page again.       You should know this already.

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We estimate getting about 5% efficiency from those silly, illogical things.

There can be a loss of an additional estimated 40% to 100% depending upon the blade shape.

Thin silly illogical "aerofoil lifting" blades:You should know better.

Think about it. The salesman might say:"The returning blades are so thin that there is almost no wind loading." Where is the energy conversion? Almost not there. Oh, maybe a little, tiny amount of energy conversion, but really think about it. An aerofoil for energy conversion? Even if it is vertical it is still an aerofoil. You should know better.

Wide blades on a VAWT:You should still know better.

Again think about it. The salesman might say:"The blades are wide to capture lots of wind." What about the returning blades which have to go against the wind and waste energy in wind loading? Oops. Again, where is the energy conversion? Again, almost not there. Again, oh, maybe a little, tiny amount of energy conversion, but really think about it. An aerofoil for energy conversion? Even if it is vertical it is still an aerofoil. You should know better.

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Vertical Axis Wind Turbines? Forget it.


Aerofoil wind turbines? You should know better.


VERTICAL axis aerofoil wind turbines? Really?


You should know better.


They are silly, illogical, and a waste of space. We do NOT build them.