Article | Proceedings of the 55th Conference on Simulation and Modelling (SIMS 55), Modelling, Simulation and Optimization, 21-22 October 2014, Aalborg, Denmark | Flow Maldistribution in the Anode of A Polymer Electrolyte Membrane Electrolysis Cell Employing Interdigitated Channels Link�ping University Electronic Press Conference Proceedings
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Title:
Flow Maldistribution in the Anode of A Polymer Electrolyte Membrane Electrolysis Cell Employing Interdigitated Channels
Author:
Anders Christian Olesen: Aalborg University, Department of Energy Technology, Denmark Søren Kær: Aalborg University, Department of Energy Technology, Denmark
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Year:
2014
Conference:
Proceedings of the 55th Conference on Simulation and Modelling (SIMS 55), Modelling, Simulation and Optimization, 21-22 October 2014, Aalborg, Denmark
Issue:
108
Article no.:
023
Pages:
241-249
No. of pages:
9
Publication type:
Abstract and Fulltext
Published:
2014-12-09
ISBN:
978-91-7519-376-2
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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In this work a macroscopic, steady-state, three-dimensional, computational fluid dynamics model of the anode of a high-pressure polymer electrolyte membrane electrolysis cell (PEMEC) is presented. The developed model is used for studying the effect of employing an interdigitated, planar-circular cell design on the distribution of water in the anode. In the electrolysis of water using PEMEC the anode is fed by demineralized water. Throughout the anode, oxygen is produced and a two-phase flow develops. Interdigitated channels assist in avoiding that gaseous oxygen obstructs the transport of liquid water towards the catalytic layer of the electrode. As opposed to the more common serpentine and parallel channels, interdigitated channels force liquid water through the porous gas diffusion layer (GDL) of the electrode. This improves the supply of water, however it increases pressure losses. While interdigitated channels have been examined for planar-square cells in detail, less is known for planar-circular cells. To examine the extent of flow maldistribution, a base case is defined and a parameter variation is conducted relative to it. In the study, the following parameters are examined: water stoichiometry, temperature, GDL permeability and thickness. In conclusion, it is found that the interdigitated flow field results in an uneven distribution across the cell and that the extent depends strongly on the permeability and weaker on the remaining parameters.

Keywords: Flow maldistribution; PEMEC; Electrolysis; Modeling

Proceedings of the 55th Conference on Simulation and Modelling (SIMS 55), Modelling, Simulation and Optimization, 21-22 October 2014, Aalborg, Denmark

Author:
Anders Christian Olesen, Søren Kær
Title:
Flow Maldistribution in the Anode of A Polymer Electrolyte Membrane Electrolysis Cell Employing Interdigitated Channels
References:
No references available

Proceedings of the 55th Conference on Simulation and Modelling (SIMS 55), Modelling, Simulation and Optimization, 21-22 October 2014, Aalborg, Denmark

Author:
Anders Christian Olesen, Søren Kær
Title:
Flow Maldistribution in the Anode of A Polymer Electrolyte Membrane Electrolysis Cell Employing Interdigitated Channels
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