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A computational model of a PEM fuel cell with finite vapor absorption rate

By A. Vorobev, O. Zikanov and T. Shamim

Abstract

The paper presents a new computational model of non-steady operation of a PEM fuel cell. The model is based on the macroscopic hydrodynamic approach and assumptions of low humidity operation and one-dimensionality of transport processes. Its novelty and advantage in comparison with similar existing models is that it takes into account the finite-time equilibration between vapor and membrane-phase liquid water within the catalyst layers. The phenomenon is described using an additional parameter with the physical meaning of the typical reciprocal time of the equilibration. A computational parametric study is conducted to identify the effect of the finite-time equilibration on steady-state and transient operation of a PEM fuel cell. <br/

Topics: QA75, TA
Year: 2007
OAI identifier: oai:eprints.soton.ac.uk:48863
Provided by: e-Prints Soton

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