Home Technology Archimedean Screw Turbines/Hydropower Screw Turbine – How it works!

Archimedean Screw Turbines/Hydropower Screw Turbine – How it works!

We all know the traditional application of the archimedean screw pump where water is pumped up from a lower to a higher level. The reversal of its function provides an efficient means of saving energy. The main advantage of a screw pump is that it is taylor made to the specific installation and therefore extremely efficient for a wide range.via:   Lex de Prieëlle

source/image(PrtSc):  Lex de Prieëlle

The new range of the Landustrie screw pump covers the hydropower screw. An efficient use of water power is already achieved at a level difference of 1 meter and a capacity of 500 l/sec. The largest capacity and level difference for hydropower screws is as much as 15000 l/sec. at 10 meter.//  Lex de Prieëlle

The Archimedes screw consists of a screw (a helical surface surrounding a central cylindrical shaft) inside a hollow pipe. The screw is usually turned by windmill, manual labor, cattle, or by modern means, such as a motor.

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As the shaft turns the bottom end scoops up a volume of water. This water is then pushed up the tube by the rotating helicoid until it pours out from the top of the tube.

Benefits of hydropower screws:

  • highest efficiency (up to 86%)
  • simple installation
  • easy implementation in existing situations (no civil construction work)
  • extremely fish friendly
  • insensitive to clogging
  • low maintenance costs
  • long life time
  • improvement of water quality
  • 24/24 energy supply
  • active flow control without extra losses
  • possibility to switch over to pump function
  • self-regulating to changing water flow