Environmentally Compatible Hydropower Potential in the Estuary of the River Ems - Analysis for a Floating Energy Converter

Steffi Dimke
University of Rostock, Coastal Engineering Group, Germany

Frank Weichbrodt
University of Rostock, Coastal Engineering Group, Germany

Peter Froehle
University of Rostock, Coastal Engineering Group, Germany

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110571416

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:6, s. 1416-1423

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Within the EC-funded research project HYLOW - Hydropower converters for very low head differences a floating energy converter - a so called Free Stream Energy Converter (FSEC) - for the energetic utilisation of currents with slow flow velocities (< 2.0 m/s) has been developed and will be optimized until 2012. In order to estimate the hydropower potential in case of deployment of the FSEC; a potential analysis exemplarily for the northern part of the river Ems; at the border between Netherlands and Germany; was performed. Here; the environmentally compatible hydropower potential has a special importance. As expected; this potential is much lower than the theoretical hydropower potential. In addition to the efficiency of the energy converter; also the required water depth; existing protection areas and other uses are the main reason for the difference between the mentioned potentials in this investigation area.


Estuary River Ems; Environmentally compatible hydropower potential; Flow velocity


[1] Mueller G. and Senior J. (2007): The hydrostatic pressure machine with free surface – a novel energy converter for very low head differences. In: Zehntes Internationales Anwenderforum Kleinwasserkraftwerke 2007; Regensburg

[2] Landy; M. (2008): A methodology to quantify the environmentally compatible potentials of selected renewable energy technologies. ETC/ACC Technical Paper 2008/16; Harwell.

[3] BAW - Waterways Engineering and Research Institute (2004). Technical Report; Mathematical Model UnTRIM; Validation Document; Version June 2004 (1.0); http://www.baw.de/vip/abteilungen/wbk/Methoden/hnm/untrim/PDF/vd-untrim-2004.pdf.

[4] Hydrodynamic data for the river Ems: results of the “Mathematical Model UnTRIM”; Federal Waterways Engineering and Research Institute

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