Savonius Wind Turbine

For those times when you don’t need a lot of wind power, such as aerating a pond or powering a small motor, you could build a Savonius wind turbine. The shape of this little windmill looks familiar to me because Dad and the Alternative Energy group he was involved with in the eighties built a larger scale version using sawn up oil drums as the scoops. I used to sit in one of the top drums and spin round and round, but that’s another story.

via Treehugger

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