Assessing fuel-cell coolant flow fields with numerical models and infrared thermography

Proper thermal management is important to the successful operation and durability of proton exchange membrane fuel cell (PEMFC) systems. In liquid cooled fuel cell systems, the planar temperature distribution of the cell is largely controlled by the coolant flow field (CFF) design inside bipolar pla...

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Bibliographic Details
Published in:International journal of hydrogen energy 2014-09, Vol.39 (26), p.14061-14070
Main Authors: Gould, Benjamin D., Ramamurti, Ravi, Osland, Corey R., Swider-Lyons, Karen E.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Cooling channels
Energy
Exact sciences and technology
Fuels
Hydrogen
IR thermography
Thermal management
Visualization
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Summary:Proper thermal management is important to the successful operation and durability of proton exchange membrane fuel cell (PEMFC) systems. In liquid cooled fuel cell systems, the planar temperature distribution of the cell is largely controlled by the coolant flow field (CFF) design inside bipolar plates (BPPs). We characterize the temperature distribution of the coolant in two different CFF designs made out of Ti–6Al–4V titanium alloy by using infrared (IR) thermography and a coupled heat-transfer numerical model. Numerical models show that the two CFFs have nearly equivalent global heat transfer characteristics and temperature distributions but very different coolant flow characteristics; one design has uneven flow through parallel cooling channels and the other design has even flow through parallel cooling channels. These two designs are used to probe the capability of IR thermography to resolve subtle differences in temperature distribution in the CFFs. We find that the temperature distribution in CFFs measured using IR thermography matches the predicted numerical model results. We conclude that IR thermograph is a useful tool for characterizing CFFs because it can visualize local temperature differences caused by trapped bubbles in addition to the overall in-plane temperature distribution. •Coupled heat-transfer is numerically modeled for two coolant flow field designs.•Temperature distribution in the coolant flow fields is measured by IR thermography.•Good qualitative agreement is found between the numerical model and experiment.•IR thermography additionally identifies trapped bubbles that cause local hot spots.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2014.07.018