Wind Generator Blades
When it comes to wind generator blades, a lot of time has been spent testing them in wind tunnels and the results of all this research are in. The first thing we want to look at is the blade area. The truth is that the blades that look like Samurai swords are not as efficient as other blades because they lack surface area. It is a relative equation the longer your blade the more surface area, the more wind that hits the blade the more energy will be transfered to your batteries.
It was also noticed that smaller blades will not spin faster, this just defies the laws of physics. It does not matter the shape of the blades, it will never slice through the air. If smaller blades where more efficient we would see them on all those huge wind generators we see in our growing wind farms.
The second thing they looked at was the number of blades that each wind generator should have. It has been discovered that four to five configurations of blades do not help anything. They are actually less efficient than the tradition three bladed wind generator. Again we should look at the wind generators on the world’s growing wind farms, you will notice they all have a three blade configuration. If more provided more power, I am sure all these gigantic wind generators would have four or five blade configurations.
What actually happens is that any blade over the third one actually slows down the wind turbine by causing turbulence. The wind turbine with more blades may initially have a slower start up speed than the three bladed one, but as soon as it starts up, it will create a considerable amount of turbulence that your wind generator does not really benefit from. The other blades will then waste their energy on trying to overcome the turbulence.
So there you go, if you are planning on building your own generator at home. You now know that you only require three wind generator blades, any more than that will not generator more wind energy. They will instead cost you more in the long run. If you want a good blade for your generator, you should purchase the longest one you can afford. It does not matter if it is made of aluminum or steel the longest one will generate more wind power for you.
