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Designing Windmill Blades for Energy Efficiency

Windmill blades need to be designed in a specific way. Learn about saving energy in your home with natural or solar power in this free video.

- Designing Windmill Blades for Energy Efficiency
- Using Windmills to Produce Electricity

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Video Transcript

The other thing is, when you want to build one, it's very difficult to get the right shape of the blades because these blades have to be very carefully designed that they get most out of it. You would not believe it, but when you see it here, these blades are spinning 3 times faster than the wind. Why? Because of the design of the blades, they can spin faster than the wind is blowing. The windmill by itself will start producing electricity with about 6 to 7 miles per hour and then it goes up and gets its peak, its highest amount of electricity with about 22 miles per hour. And then this windmill, like you see it here, produces thousand watts an hour. So, that's a lot of electricity for a computer or for refrigerator or for lights and for all that. That would not be enough for your air conditioning system, that normally pulls 8 times of this, so you would need 8 of these and then full wind.

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Designing Windmill Blades for Energy Efficiency

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