溶融碳酸盐型燃料电池温度特性的建模与求解

Dynamic Modeling of Molten Carbonate Fuel Cell and Its Dynamic Rospouse of Temperature

本文首先提出了根据热量与物质的平衡及电化学的作用原理而得到的一组燃料、空气气体、电解质、隔板的温度特性的基本微分方程组,然后对这个方程组参数进行统一的无量纲化,最后由于这个方程组是无量纲化的空间和时间的偏微分方程组,用加权残差法(WMR)进行近似解,并对燃料电池本体内若干点的温度特性进行了探讨。

This paper first presents a set of dynamic governing equations of fuel and oxidant gas temperatures, electrode-electrolyte plate and separator temperatures based upon the heat and material balances and eletro-chemical reaction. The, all the parameters in these equations are generalized by non-dimensionalization. Since these equations are partial differential equations with respect to non-dimen- sionalized place and time, they are approximated by using the method of wei- ghted residuals. The dynamic temperature responses for step load change at several points in the cell are then discussed.