Savonius vertical axis wind turbine
Savionus windturbine on roof, this kind of wind turbine is compact and easily integrated into buildings - crédit : Pcon
Although with less efficiency compared with three-bladed wind turbines, the savonius vertical axis wind turbine has the advantage of being compact, economical and aesthetic.
This allows it to be easily integrated into buildings.
Working principle of a Savonius wind turbine
The Savonius rotor is composed of two half-cylinders off axis
crédit : Ecosources
This machine was invented by the Finnish engineer Sigurd Savonius in 1924 and was patented in 1929.
She is composed of a minimum of two half-cylinders off axis.
- Advantages :
- Easily integrated into buildings
- Starts at low wind speed unlike the darrieus vertical axis wind turbine
- Low-noise system
- Works with any wind direction
- Disadvantages :
- Low efficiency
Facilities and prototype of Savonius wind turbine
Hybrid wind/solar, outside lighting system with a vertical axis Savonius wind turbine
A solar panel and a vertical wind power supply
the lighting system - crédit : Panasonic
The company Panasonic provides a new kind of outside lighting system
A solar panel and Savonius wind turbine can charge a battery in the base of the tower.
This battery can power a streetlight or private outdoor.
Totally autonomous, this type of installation keeps lighting in case of electricity supply shutdown.