POROUS INSERTS FOR IMPROVED COOLANT DISTRIBUTION IN BIPOLAR PLATE ASSEMBLIES FOR FUEL CELLS
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United States of America Patent
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Sep 6, 2017
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Jul 5, 2013
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Abstract
Certain fuel cell designs employ bipolar plate assemblies with internal coolant flow fields which comprise a coolant channel region and transition regions adjacent the coolant channel region. The temperature and/or pressure drop, and hence flow, of coolant over the coolant channel region can be non-uniform however, and this can have an adverse effect on cell performance. The coolant flow and temperature distribution can be modified and made more uniform by inserting an appropriate non-uniform porous insert in one or more of the coolant transition regions.
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