Effect of Operating Parameters on Material Distribution and Start-up time of High Temperature Fuel Cells
In this paper,comsol software was used to establish a three-dimensional numerical calculation model for electrochemical heat and mass transfer of high temperature proton exchange membrane fuel cells.The effects of battery voltage and inlet temperature on material distribution and start-up time were analyzed by changing operated parameters.The results show that with the increase of inlet temperature and the decrease of voltage,the consumption of battery reactants and the amount of water generated increase continuously,and the start-up time decreases.When the voltage is below 0.4V,it will lead to the"hunger"phenomenon of insufficient cathode oxygen.And when the intake air temperature is higher than 150℃,the influence of increasing the intake air temperature on the starting time will be greatly reduced.That is,0.4V starting voltage and 150℃intake temperature are a more suitable starting parameters.
High temperature fuel cellIntake air temperatureVoltage
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