Please use this identifier to cite or link to this item: https://doi.org/10.1115/IHTC14-22787
Title: Computational study of flow reversal for improved thermal management in a PEMFC stack with forced air convection cooling
Authors: Sasmito, A.P. 
Birgersson, E. 
Mujumdar, A.S. 
Issue Date: 2010
Citation: Sasmito, A.P.,Birgersson, E.,Mujumdar, A.S. (2010). Computational study of flow reversal for improved thermal management in a PEMFC stack with forced air convection cooling. 2010 14th International Heat Transfer Conference, IHTC 14 5 : 81-90. ScholarBank@NUS Repository. https://doi.org/10.1115/IHTC14-22787
Abstract: In a proton exchange membrane fuel cell (PEMFC) stack equipped with a forced-convection open-cathode manifold, significant temperature gradients can develop from the inlet to the outlet due to the incoming cool air heating up as it passes through the cathode flow fields. In order to reduce these gradients, we consider flow-reversal of the air by reversing the flow direction of the fans that are providing the forced convection: This allows cool air to alternately enter the stack from the front and the rear instead of only from the front. The impact of the flow-reversal is studied with a model considering two-phase flow and conservation of mass, species, momentum, charge, and energy in the PEMFC stack and ambient; the fans are treated as interface conditions. The results indicate that the temperature, water and current density distributions become more uniform with an overall reduction of the maximum temperature in the stack. © 2010 by ASME.
Source Title: 2010 14th International Heat Transfer Conference, IHTC 14
URI: http://scholarbank.nus.edu.sg/handle/10635/51569
ISBN: 9780791849408
DOI: 10.1115/IHTC14-22787
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