Detection of Flooding and Drying inside a PEM Fuel Cell Stack
نویسندگان
چکیده
منابع مشابه
Modeling and simulation of a new architecure stack applied on the PEM Fuel Cell
To simulate a new economical architecture for PEM fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (CFD) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...
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In this paper we study the performance of a PEM stack fuel cell after 900 hours of operation. We tried to identify any voltage degradation and its causes. Microscopic cracks on some parts of MEA mainly due to uniformity of pressure, stress concentration and elongation of membrane in the edge of GDL has been identified as the most important cause of this gradual degradation. High contact resista...
متن کاملModeling and Control for Pem Fuel Cell Stack System I
A nonlinear fuel cell system dynamic model tha t is suitable for control s tudy is presented. The t ransient phenomena captured in the model include the flow characterist ics and inertia dynamics of the compressor, the manifold filling dynamics, and consequently, the reactant part ial pressures. Character izat ion of the Fuel Cell polarization curves based on t ime varying current , part ial ox...
متن کاملmodeling and simulation of a new architecure stack applied on the pem fuel cell
to simulate a new economical architecture for pem fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (cfd) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...
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Proton exchange membrane fuel cells (PEMFCs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. Nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of PEMFCs. In this study, a brand new design for a polymer electrolyte membrane...
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ژورنال
عنوان ژورنال: Strojniški vestnik – Journal of Mechanical Engineering
سال: 2013
ISSN: 0039-2480
DOI: 10.5545/sv-jme.2012.640