One modification of Savonius wind turbine is Windside wind turbine. Credit: Image courtesy of University of Vaasa
Finnish invention, a vertical axis Savonius wind turbine can be further improved shows a new study from the Uni of Vaasa. Due to the mechanical modification of the rotor the power coefficient was shown to be increased by around 8% (2% units). The power coefficient is the ratio of power extracted by the rotor: kinetic power in the air flow. According to doctoral thesis of Svetlana Marmutova, University of Vaasa, the variation of the power coefficient under gusty wind conditions depends on the level of gustiness: the higher the gustiness the more stable is power coefficient.
Savonius wind rotor was invented by Finnish marine engineer Sigurd Savonius in early twenties of the last ...
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