Title
Water management in an alkaline fuel cell Water management in an alkaline fuel cell
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
article
Publication
Oxford ,
Subject
Engineering sciences. Technology
Source (journal)
International journal of hydrogen energy. - Oxford
Source (book)
Special issue : International Conference on Hydrogen Production (ICH2P) 2010 / Dincer, Ibrahim [edit.]
Volume/pages
36(2011) :17 , p. 11011-11024
ISSN
0360-3199
ISI
000295235200063
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Alkaline fuel cells are low temperature fuel cells for which stationary applications, like cogeneration in buildings, are a promising market. To guarantee a long life, water and thermal management has to be controlled in a careful way. To understand the water, alkali and thermal flows, a model for an alkaline fuel cell module is developed using a control volume approach. Special attention is given to the physical flow of hydrogen, water and air in the system and the diffusion laws are used to gain insight in the water management. The model is validated on the prediction of the electrical performance and thermal behaviour. The positive impact of temperature on fuel cell performance is shown. New in this model is the inclusion of the water management, for which an extra validation is performed. The model shows that a minimum temperature has to be reached to maintain the electrolyte concentration. Increasing temperature for better performance without reducing the electrolyte concentration is possible with humidified hot air.
E-info
https://repository.uantwerpen.be/docman/iruaauth/a2bc7e/53d10bc705e.pdf
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