一种新型进气方式对燃料电池水管理效果的影响  

Influence on water management using new inlet gas humidification design for PEFC

作　　者：王世学[1] 齐贺[1] 李桦[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《热科学与技术》2013年第4期354-359,共6页Journal of Thermal Science and Technology

基　　金：科技部国际合作资助项目(2011DFA60290)

摘　　要：为了同时解决燃料电池水管理中的干涸(dehydration)和水淹(flooding)问题,提出了一种主副流道分流式的阴极进气加湿方式,并用数值模拟分析了主副流道合流节点位置变化对燃料电池性能的影响,同时与应用非分流式进气加湿方式的燃料电池性能进行了对比。结果表明,分流式阴极进气方式可以同时降低流道内的干涸和水淹程度,从而提高电池性能;当入口处空气摩尔流量固定时,随着阴极流道上主副流道合流节点沿气体流动方向移动,电池输出电压先上升,达到最大值后,逐渐下降。In order to solve the dehydration and flooding problem of PEMFC, a new inlet gas humidification design to control the degree of drying and flooding during the channel is developed, and a developed water and heat management model was used to investigate the effect IV curves of this humidification design. The results showed that when the inlet air molar flow is fixed, with the junction of primary and secondary cathode channels moving along gas flowing direction, the battery output voltage is increased at first, and gradually decreased after reaching the maximum.

关 键 词：质子交换膜燃料电池 水管理 分流式阴极进气 水淹 干涸 

分 类 号：TM911.4[电气工程—电力电子与电力传动]