流型对固体氧化物燃料电池性能的影响

Influence of flow type on solid oxide fuel cell performance

固体氧化物燃料电池(SOFC)是一个伴随流动、传热和电化学反应的复杂系统,它的性能在很大程度上取决于电池的系统结构。基于容阻特性建模和分布集总参数方法,在已建立的一维内重整固体氧化物燃料电池数学模型的基础上,分别建立了顺流型和逆流型固体氧化物燃料电池的仿真模型,并比较和分析了燃料电池的稳态分布特性和动态特性。仿真结果表明顺流型固体氧化物燃料电池能更好地满足动力系统性能和安全方面的需求。

SOFC is a complicated system with heat and mass transfer as well as electrochemical reactions. Its performance is primary determined by its flow configuration in some sense. Based on the developed mathematical model of one dimension and direct internal reforming SOFC, the volume-resistance （V-R） characteristic modeling and distributed and lumped parameters SOFC simulation model for both co-flow and counter-flow types were established. The comparison and analysis of the distribution steady and dynamic performances were completed for both flow types. The results indicate that the co-flow type configuration SOFC is more suitable in the view of both performance and safety.