摘要
为了研究质子交换膜燃料电池变载过程中气体传输对动态响应的影响,建立了5流道蛇形流场质子交换膜燃料电池三维单相模型,并基于实际参数进行Fluent仿真.分析了运行参数(包括工作压力、进气增湿、化学计量比)对质子交换膜燃料电池稳态性能的影响,以及运行参数对质子交换膜燃料电池动态性能的影响.结果表明:工作压力高、阳极湿度大、化学计量比大能提高燃料电池稳态性能,小电流密度下阴极湿度大燃料电池稳态性能好,大电流密度下则相反;工作压力高、化学计量比大、阴极湿度大能提高燃料电池动态性能.
In order to analyze the effects of reactants transport on fuel cell dynamic response during load change,a five channel, three-dimension, single-phase proton exchange membrane fuel cell model based on actual parameters is built and simulation is implemented using ANSYS Fluent. The influences of operating pressure,humidity,stoichiometry on proton exchange membrane fuel cell steady state performance as well as the influences of operation parameters on proton exchange membrane fuel cell dynamic characteristics are analyzed.The results show that high operating pressure,anode humidity,and stoichiometry can improve the steady state performance of proton exchange membrane fuel cell;in the case of small current density,the steady state performance improves along with the increase of cathode humidity;in the case of large current density,the opposite is true;high operating pressure,stoichiometry,and cathode humidity can improve the dynamic response of proton exchange membrane fuel cell.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第S1期110-116,共7页
Journal of Tongji University:Natural Science
基金
国家重点研发计划新能源专项(2017YFB0103105)
同济大学青年优秀人才培养行动计划(1700219153)
