savonius wind turbine - Google-haku Eräs mitoitusehdotus Savoniukselle Unfortunately, Savonius wind turbines typically only have an efficiency of around 15% - i.e. just 15% of the wind energy hitting the rotor is turned into rotational mechanical energy. (This is much less than can be achieved with a Darrieus wind turbine which uses lift rather than drag.)
How Works : When you talk about modern wind you're looking at two primary designs: horizontal-axis and vertical-axis. Vertical-axis wind turbines (VAWTs) are pretty rare. The only one currently in commercial production is the Darrieu
A vertical axis turbine is set so that the rotor shaft is arranged vertically, meaning that the turbine does not need to be pointed into the wind and the generator, if desired, can be placed near the .