质子交换膜燃料电池内传递现象的数值模拟

NUMERICAL SIMULATION OF TRANSPORT PHENOMENA IN THE PROTON EXCHANGE MEMBRANE FUEL CELL

本文发展了一个质子交换膜燃料电池的三维数学模型,用于研究整个电池内的传递现象,模型全面考虑了流体 流动、热量传递、电化学动力学和多组分传递等物理化学过程。数值求解数学模型获得了电池内详细的温度、反应物浓度 和电流等的空间分布情况。为验证模型的正确性,将估算的电池性能与文献中的实验数据进行了比较。

A three-dimensional mathematical model of the proton exchange membrane(PEM) fuel cell(FC) is developed to study transport phenomena in the whole fuel cell. Almost all physical and chemical processes, including fluid flows, heat transfer, electrochemical kinetics and multicomponent transport, occuring in the fuel cell are considered comprehensively in this model. Spatial distributions of temperature, species concentrations and current are illustrated and discussed in detail by numerical simulation. Lastly, comparison of predicted performance and experimental data published in literature is conducted to validate the mathematical model.