The screw turbine, also known as Archimedes' screw, is a volumetric turbine that exploits the principle of gravity to generate electricity using low and very low water head otherwise not exploitable with traditional turbines.
The turbine is mainly composed of:
- screw, consisting of a central tube and metal coils
- electrical panels
- Possible operation at variable speed in the case of non-constant water flows
- Constructive simplicity that determines an easy operation and maintenance
- Relatively large debris can pass, so it does not need a screening system
- Low rotation speed and large flow
- The fish fauna has the possibility to cross the screw towards the valley without being damaged
- Civil engineering structures and simplified foundations
We can design and install screws with a head from 1.5 to 4 meters and from 1000 to 5000 liters per second of water flow rate.