How to build a simple, inexpensive vertical-axis wind turbine The Zoetrope is a vertical-axis wind turbine (VAWT) made from materials commonly found at your local hardware store and a few easily purchased online, and Applied Sciences
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.)
In an attempt to address the major concerns surrounding wind farm installation and use, Swedish corporation Hexicon has designed a floating wind platform as a possible solution to this wind energy conundrum.