摘要
研究大功率燃料电池稳态温度场数值模拟方法,旨在提升大功率燃料电池性能。本研究选取质子交换膜燃料电池作为研究对象,建立由质子交换膜阴阳极气体流道、阴阳极集流板、阴阳极扩散层、阴阳极催化剂层以及质子交换膜9部分构成的质子交换膜燃料电池物理模型;通过分析能量守恒方程、流体传递方程、动量守恒方程、组分守恒方程、电荷守恒方程、净迁移通量方程等,对所构建模型稳态温度场进行稳态控制,并利用CFD_FLUENT软件对质子交换膜燃料电池稳态温度场进行数值模拟。实验结果表明:电池内部温度随着环境温度、入口气流温度、阴极利用率的提高而上升;电池内部温度随着工作电压提升而下降。研究结果对大功率燃料电池运行性能的提升具有重要意义。
Research on numerical simulation method for steady-state temperature field of high-power fuel cells aims to improve the performance of high-power fuel cells.The study selected proton exchange membrane fuel cell as the research object,set up proton exchange membrane fuel cell physical model consisting of 9 parts such as the proton exchange membrane cathode-anode gas flow channel,cathode-anode current collector,cathode-anode diffusion layer,cathode-anode catalyst layer and the proton exchange membrane;through the analysis on the energy conservation equation,fluid transfer equation,momentum conservation equation,components conservation equation,charge conservation equations and net migration flux equation,the steady-state temperature field of the model was under the steady-state control,and the numerical simulation was made on the steady-state temperature field of proton exchange membrane fuel cell with the CFD_FLUENT software.The experimental results show that the internal temperature of the battery increases with the increase of the ambient temperature,the inlet airflow temperature and the utilization rate of cathode,while the internal temperature of the battery decreases with the increase of the working voltage.The research results are of great significance to the improvement of the operating performance of high-power fuel cells.
出处
《芜湖职业技术学院学报》
2020年第3期43-46,58,共5页
Journal of Wuhu Institute of Technology
基金
安徽省高校自然科学研究重点项目(项目编号:KJ2019A1273)
安徽省2018质量工程项目高水平教学团队——科学教育专业教学团队(项目编号:2018jxtd132)资助
关键词
大功率
燃料电池
稳态
温度场
数值模拟
high power
fuel cells
steady state
temperature field
numerical simulation
