WWS - Francis Hydro Turbines

The Francis turbine – also know as “excess pressure turbine” – is usually installed for medium heads of water and constant water quantities. This type of turbine mostly uses a steel spiral turbine, since there is often a tube line leading to the turbine at heads of water over 20m. Further advantages of the compact design of the spiral turbine are much lower construction costs and low maintenance efforts. The preferable drive option here is also a direct drive, due to transmission losses caused by belt and gear unit solutions.