熔盐燃料电池堆温度场的数值分析

通过研究熔融碳酸盐燃料电池的传热传质和电化学反应机理,根据质能守恒原理建立了电堆的稳态温度模型。模型考虑了辐射换热、转换反应及组分动量的变化。求解传质方程时对电流密度做了一阶假设。结果表明顺流型熔融碳酸盐燃料电池堆的最高温度在电堆中间和出口部分;入口气流温度、阴极利用率和电流密度是影响电堆温度的主要因素。

Numerical analysis for temperature of molten carbonate fuel cell stack

Through studying the heat-mass transfer and multi-spices electric-chemical reaction, a steady temperature model was developed for molten-carbonate fuel cell stack. The thermal radiation, shift reaction, and the change of momentum were considered in this model. The mass transfer model was solved though a first-order approximation. The simulation shows that the highest temperature of co-MCFC stack exists in the middle and outlet; inlet gas temperature, utilization of cathode gas, flowing pattern and current density has predominant effect on the temperature of stack.