This type of turbine is simple to build, but is not nearly as effi cient as a well-designed horizontal axis turbine. The Savonius turbine relies solely on drag to produce the force that turns their shaft. One side of the turbine catches the moving air more than the other, causing the turbine to spin. This design does not allow the turbine to spin faster than the oncoming wind, which makes them a poor choice in areas where winds are light.
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The Pembina Institute |
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