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An improved serpentine flow field with enhanced cross-flow for fuel cell applications

✍ Scribed by P.V. Suresh; S. Jayanti; A.P. Deshpande; P. Haridoss

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
815 KB
Volume
36
Category
Article
ISSN
0360-3199

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✦ Synopsis

The paper describes a flow field design which is based on the improvement of the local cross-flow conditions in a split serpentine flow field. The layout of the flow field is such that the cross-flow is higher in the oxygen-depleted portion of the adjacent serpentine channel in a split serpentine flow field with more than one serpentine channels. The present arrangement offers the quadruple advantage of uniform reactant distribution over the entire cell active area; low overall pressure drop, thereby reducing the parasitic power losses; effective liquid water evacuation in the U-bends; and more oxygen replenishment in the oxygen-deficient portions of the serpentine channel. Computational fluid dynamics (CFD) and experimental analysis carried out on the proposed design with three serpentine channels confirm the benefits.

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