Proton exchange membrane fuel cells (PEMFC) show great potential to be considered as a renewable power system for future automobile applications due to their high power density and low operating temperature. However
a successful startup from subfreezing temperatures is a major challenge for the commercialization of PEMFC. In this research
a three-dimensional electrochemical-transport coupled model is developed. The model accounts the flow and heat transfer of the coolant during the cold start process. A detailed visualization analysis is conducted to illustrate the effects of a coolant system on the cold start performance. Our results include reactants concentration profiles
voltage curves
temperature distribution
and ice formation. The model validation results show good agreement between the model prediction and experimental data. Therefore
the model can be used to achieve a better understanding of PEMFCs cold start behavior.
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