Introduction to Wind Power
How does a windmill create electricity? License: Creative Commons BY-NC-SA More information at http://k12videos.mit.edu/terms-conditions.
3 Responses to Introduction to Wind Power
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How does a windmill create electricity? License: Creative Commons BY-NC-SA More information at http://k12videos.mit.edu/terms-conditions.
I wonder if the reason for 3 rotors/ blades is largely due to cost efficiency. You need at least 2 rotors for balance. With each additional rotor, one would expect more power (up to a point in which the rotors would just cause too much air resistance). However, since the blades are heavy and costly, it is probably most economically efficient to only have three blades per windmill and just make a new windmill. not sure though.
Jonathan Abbott
April 17, 2013 at 10:13 pm
What if I increase the number of rotors? I believe the most efficient way is with 3 rotors (otherwise we wouldn’t see everywhere with 3), but I have no idea how discover this by calculation, neither if a smaller turbine, like the one you made and showed in the video, could generate more power.
Bernardo Ferrari
April 17, 2013 at 10:43 pm
Towards the end this sounded less like an educational video and more like a liberal propaganda video. Wildlife impact is a nice way of saying birds go splat.You forgot to mention that you need space for these things. I’m all for wind power, even though it mass murders the birdies. As long as it doesn’t take up the space that could be used growing food.
tejolson92
April 17, 2013 at 11:39 pm