Study on Mass Transfer Characteristics of PEMFC Under Different Channel Cross Sections
The mass transfer characteristics of Proton Exchange Membrane Fuel Cell(PEMFC)system were simulated and analyzed by Fluent software with different gas channel cross sections and different pressure conditions as independent variables,and the mass transfer process was analyzed theoretically by applying the principle of field synergy.The analysis results showed that compared with rectangular cross-section,the mass transfer performance of triangular cross-section was the best,while that of hexagonal cross-section was the worst;When the operating pressure was increased,the mass transfer performance of the anode gas channel was obviously enhanced,while the mass transfer performance of the cathode gas channel was insensitive to the operating pressure;The smaller the synergy angle between velocity field and concentration field in the gas channel,the better the mass transfer performance in the channel.
Proton exchange membrane fuel cellEnhanced mass transferField synergyNumerical simulation
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