Studies & guides

Fish-Monitoring

  • 2/3 of the fish that were used ascended (chub, barbel, pike, Danube salmon, sneep, roach)
  • At least 1 fish of each species from 1.5 cm to 70 cm fish length

Research report: Fish monitoring on the Jeßnitz (2013)
Screw turbine Walter Albrecht
Chub-barbel-pike-Danube salmon-sneep-roach Experiment

Fish ecological studies

  • continuous ascents registered during the entire operating period (Oct. 2013 to March 2014)
  • The hydrodynamic screw from Hydroconnect is very well suited for fish descent
  • various fish species descended and ascended
  • no danger of injury for fish (upstream and downstream)

Fish ecological studies of the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant location (2014)

Boku-wien-01BERNHARD ZEIRINGER, MAXIM GRIGULL & STEFAN AUER
BOKU – University of Natural Resources in Vienna, Institute for Hydrobiology and Water Management

Visualisation: Descent and ascent statistics

Visual representation of the fish ecological studies of the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant location (2014)

Fish ecological studies of the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant location (2014)

Boku-wien-01BERNHARD ZEIRINGER, MAXIM GRIGULL & STEFAN AUER
BOKU – University of Natural Resources in Vienna, Institute for Hydrobiology and Water Management

Guideline: Practical manual for environmentally aware use of turbine technologies in very-small-scale hydropower plants

  • Description and assessment of 17 turbine technologies (Hydroconnect pg. 60)
  • From the conclusion: “The design and use of technology in the fish-friendly dam and hydrodynamic screw with double rotating cylinders is to be rated as very positive. It can be seen in the development that the thought of protecting the fish was a high priority right from the start.”

Guideline: Practical manual for environmentally aware use of turbine technologies in very-small-scale hydropower plants

Manuela Reuter & Christian Kohout, IWSÖ Institute for Water Management, Urban Water Supply and Sanitation and Ecology (IWSÖ ) in Thuringia

Study: Preliminary trials of macro-zoobenthos

In the 3-day trial, 2271 macro-zoobenthos found their way up through the fish transport screw.

Study: Preliminary trials of macro-zoobenthos on the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant location (2014)

Boku-wien-01DI Bernadette Rauch, Nadine Remund, BSc

BOKU – University of Natural Resources in Vienna, Institute for Hydrobiology and Water Management

Study:Descent trial

Numerous fish of various kinds descended. All passed the screw injury free. Some of them also reascended.

Study: Descent trial of the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant in Lower Austria

Boku-wien-01Bernhard Zeiringer, Maxim Grigull, Stefan Auer
BOKU – University of Natural Resources in Vienna, Institute for Hydrobiology and Water Management

Study: Electrical efficiency analysis

Alread at smaller plants electrical efficiencies of 65% and more are possible.

Study: Efficiency analysis and hydromorpical measurement of the “HYDROCONNECT” hydrodynamic screw with an “Albrecht fishLift inside” at the Jeßnitz power plant location in Lower Austria

Boku-wien-01Bernhard Zeiringer

BOKU – University of Natural Resources in Vienna, Institute for Hydrobiology and Water Management