Coanda rakes, as the name suggests, make use of the so-called Coanda effect to provide an effective self-cleaning and environmentally friendly water intake. The key lies in the angled mesh bars, which create a suction effect, absorbing the water.
This works as follows:
The water slides over the steep surface of the rake at high speed. As the water shears over the sharply edged sieve bars, materials are carried down and collected in front of the rake. At the same time, a suction is created that pulls the cleaned water inside the body.
The Coanda Asterikks we have developed as an exclusive and proprietary product that is unsurpassed in its effectiveness!
Due to its special design, the Coanda Asterikks of neromlyos brint a whole range of advantages, especially in comparison with a Tyrolean Wehr:
- effective- the "absorption capacity" and the cleaning effect depend on the gap width of the screens, they are available from 1mm- 12mm; e.g. a gap width of 3mm results in 94% cleaning of suspended particles >2.2mm and 100% cleaning of particles >3mm;* length of the individual modules: 1.0m; 1.5m and 3m.
- sustainable - cost savings due to longer turbine life and less maintenance
- self-cleaning - needles and leaves are simply flushed downward until they finally land in front of the rake
- environmentally friendly - this means you don't need an expensive, hydraulically operated rake cleaning system; no danger due to oil leaks
- no icing - even at very low temperatures down to approximately -30C°
- increased annual output -because there is hardly any downtime
- uncomplicated - simple installation also possible directly in the dam, the sieves can be replaced if necessary
- durable - highly wear-resistant special stainless steel makes the Coanda Asterikks particularly stable against abrasion, the reinforced body can withstand even very heavy bed load without any problems
- friendly to fish - it has been confirmed by ecologists and biologists that there is no risk of injury to fish. It is impossible for fish to enter the penstock.
*(in order to be able to optimally guarantee the longevity of your turbine, we recommend that you connect a neromylos desander (sand filter) in series to the Coanda Asterikks.)
This makes the Coanda Asterikks an exclusive product that leaves nothing to be desired. Convince yourself!
We offer 10 years wear warranty if you sign a maintenance contract.
Together we are going to solve your problem.
Ask us – we are always willing to help!