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Dissertation: The improved Savonius wind turbine captures wind in the cities
http://www.uva.fi/en/news/vaitos-kaupunkiymparistoon_soveltuva_savonius-tuulivoimala_saa_lisaa_tehoa/[font face=Serif][font size=5]Dissertation: The improved Savonius wind turbine captures wind in the cities[/font]
Posted on 20/05/16.
[font size=3]Finnish invention, a vertical axis Savonius wind turbine can be further improved according to doctoral thesis of Svetlana Marmutova from the University of Vaasa.
Due to the mechanical modification of the rotor the power coefficient was shown to be increased by around 8 percent (2% units). The power coefficient is the ratio of the power extracted by the rotor to the available kinetic power in the air flow.
…
Among the advantages of a vertical axis Savonius wind turbine are low noise level, the ability to operate with low wind speeds and relative independence on the wind direction and simplicity of maintenance and manufacture of the turbine. Basically the simple rotor can be obtained by cutting any cylindrically shaped object and moving the parts sideways along the cutting plane. However, the rotor has low power coefficient and power output in comparison to HAWTs.
…
In the frame of the study, conducted in the University of Vaasa, some aspects of a Savonius wind turbine operation in urban areas were considered. The proposed modification adds a plane in the center of a rotor, which decreases the pressure behind the advancing blade thus increasing the lift force. Thus, a Savonius rotor is drag and lift device. The advancing blade is the blade which moves in the direction of the incoming wind.
…[/font][/font]
Posted on 20/05/16.
[font size=3]Finnish invention, a vertical axis Savonius wind turbine can be further improved according to doctoral thesis of Svetlana Marmutova from the University of Vaasa.
Due to the mechanical modification of the rotor the power coefficient was shown to be increased by around 8 percent (2% units). The power coefficient is the ratio of the power extracted by the rotor to the available kinetic power in the air flow.
…
Among the advantages of a vertical axis Savonius wind turbine are low noise level, the ability to operate with low wind speeds and relative independence on the wind direction and simplicity of maintenance and manufacture of the turbine. Basically the simple rotor can be obtained by cutting any cylindrically shaped object and moving the parts sideways along the cutting plane. However, the rotor has low power coefficient and power output in comparison to HAWTs.
…
In the frame of the study, conducted in the University of Vaasa, some aspects of a Savonius wind turbine operation in urban areas were considered. The proposed modification adds a plane in the center of a rotor, which decreases the pressure behind the advancing blade thus increasing the lift force. Thus, a Savonius rotor is drag and lift device. The advancing blade is the blade which moves in the direction of the incoming wind.
…[/font][/font]
