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
