Ingenieurburo Floecksmuhle

Aachen, Germany

Ingenieurburo Floecksmuhle

Aachen, Germany
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Anderer P.,Ingenieurburo Floecksmuhle
WasserWirtschaft | Year: 2011

The EU member states committed themselves to increasing the share of energy from renewable sources in the EU's final energy consumption from 10 to 20 % by 2020. The electricity sector will provide an essential contribution in reaching this goal. Although the use of hydropower is already strongly developed in some European countries, a substantial additional potential is still available. Hydropower will play an important role in future electricity supply because of its base load and storage capacity.


Hermens G.,Ingenieurburo Floecksmuhle | Keuneke R.,Ingenieurburo Floecksmuhle
WasserWirtschaft | Year: 2012

The delta where the Eifelrur (NL: Roer) flows into the river Meuse is located in the Dutch city of Roermond and divides into two branches. While the branch that flows through the city runs the hydro power plant ECI-Centrale, the second branch - called Hambeek - is used mainly for flood protection. Until the year 2007, the only existing upstream migration facility was installed in the Hambeek branch, but its traceability was unsatisfactory. In addition, biological studies revealed a constrained passability at the spot. The hydro power plant, which carries the highest discharge for the greatest part of the year, had no upstream migration facility. Since the Rur is an important tributary to the river Meuse, an ambitious project was launched to equip both branches with large migration facilities that meet current Dutch standards and now ensure connectivity in the delta.


The hydro power plant ECI-Centrale and its dam are the lowest obstacles in the Eifel Rur, where Dutch and German authorities are currently resettling salmon and sea trout populations. To protect downstream migrating fish at this strategically important spot, the authorities installed a 10 mm screen with a discharge of 16 m3/s as well as two bypass channels, one of them situated near the surface and the second one near the bottom. Monitoring results so far show that a great amount offish of different species do make use of these migration facilities. Moreover, the protection screen does not affect the operation of the hydro power plant.


Wolf-Schumann U.,Hydrotec Ingenieurgesellschaft fur Wasser und Umwelt mbH | Dumont U.,Ingenieurburo Floecksmuhle
WasserWirtschaft | Year: 2010

Climate Change has a high influence on the energy production and the earning of hydro power plants. On basis of the existing evaluations there will be a minor production of hydro power in Germany. In the near future the production will decrease about 1 to 4 % and in the further future about 15 %. Computer simulations for selected waterpower plants at the rivers Rhine, Lech and Main demonstrate that their earning responses sensitively to variabilities of water supply. According to the circumstances the variability balances from +9 % to-9 %.To counterbalance possible minor productions - of hydro power it is recommended to use the existent potential to optimize the plants - and to improve operation and maintenance.


Anderer P.,Ingenieurburo Floecksmuhle | Dumont U.,Ingenieurburo Floecksmuhle | Stark B.,Hydrotec Ingenieurgesellschaft fur Wasser und Umwelt mbH | Wolf-Schumann U.,Hydrotec Ingenieurgesellschaft fur Wasser und Umwelt mbH
WasserWirtschaft | Year: 2010

The Federal Ministry of the Environment has commissioned a research project to determine the hydro power potential of Germany on the basis of an theoretical line potential approach. For this purpose current digital data of terrain morphology and flow rates have been processed and analyzed using a geographic information system (GIS). Considering the parameters of head utilization rate and machine efficiency, the line potential was further broken down to a technical hydro power potential. Results of this study show that 60 % of the large water courses' theoretical hydro potential can be utilized. Of the small and mid-size water bodies about 20 % of the line potential can realistically be utilized. Considering the current use of hydro power, the subtraction of the used potential and the unused technical potential results in a supplementary hydro power potential which is subject to further restrictions such as competing utilizations and legal requirements.


Whenever a water body passes a hydropower station, damage to the downstream migrating fish must be expected. A number of prognosis models can be employed to assess and estimate the damage rate to the fish population during these turbine passages. A comparison of different types of empirical models has been carried out as part of a research paper regarding the development and testing of measure plans to ensure an ecological compatible implementation of hydro power in the mid-Weser river system.These models have also been evaluated on the basis of their effectiveness to estimate damage rates in a chain of hydro power plants.


Anderer P.,Ingenieurburo Floecksmuhle | Dumont U.,Ingenieurburo Floecksmuhle | Heimerl S.,Fichtner GmbH and Co. KG | Ruprecht A.,University of Stuttgart | Wolf-Schumann U.,Hydrotec Ingenieurgesellschaft fur Wasser und Umwelt mbH
WasserWirtschaft | Year: 2010

Germany has set a goal for the year 2030 to cover 45 % of its electric power consumption through renewable energies. Currently about 14% of electricity are provided by renewable energy sources, 25 % of which come from hydro power. As a basis for a German development strategy, the Federal Ministry of Environment, Nature Conservation and Nuclear Safety (BMU) has commissioned further research to determine the additionally usable potential of hydropower throughout Germany, using the consistent method of line potential calculation.


Anderer P.,Ingenieurburo Floecksmuhle | Bauerfeind C.,Ingenieurburo Floecksmuhle | Gorlach J.,Thuringer Landesanstalt fur Umwelt und Geologie
WasserWirtschaft | Year: 2014

The river Unstrut is one of the rivers for which the management plans for the German Federal State of Thuringia set the focus of the devised measures on restoring passability. Studies were carried out that covered not only the analysis of the individual barriers but also of their combined effect on passability and of the total disturbances caused by the reservoir and the original river bed sections. The analysis shows that the suggested passability restoring measures are able to create the conditions for the good ecological status for the fish fauna.


In the past the River Kinzig was a very important salmon-breeding area. During the industrialization a lot of dams had been built to use the waterpower, so the salmons could not reach the breeding area anymore. The first barrage for upstream migrating fish is placed in Willstätt and was used for waterpower since a long time. In 2007 the building was already in need of rehabilitation, so the company decided to build a new hydroelectric power station outside the village. Core of the new plant is a vertical Kaplan turbine with a highly efficient generator. Additionally a fish protection system and upstream as well as downstream migration devices were installed.


Keuneke R.,Ingenieurburo Floecksmuhle | Dumont U.,Ingenieurburo Floecksmuhle
WasserWirtschaft | Year: 2013

The utilisation of hydro power as a sustainable energy source implies negative effects on river ecology, especially on river connectivity. Power generation based on these energy sources is therefore regarded as being not consistent with the aims of the EU Water Framework Directive. Applying a river area strategy can combine the aims of power generation and sustaining the fish population within an river basin.

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