气液逆流撞击作用下PEMFC加湿特性研究  

Research on humidification characteristics of PEMFC under gas-liquid countercurrent impact

作　　者：程志国 杨震 牛远春 陈庚 陈志鹏 CHENG Zhiguo;YANG Zhen;NIU Yuanchun;CHEN Geng;CHEN Zhipeng(Legend New Energy Technology(Shanghai)Co.,Ltd.,Shanghai 201805,China;School of Mechanical Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]律致新能源科技(上海)有限公司,上海201805 [2]同济大学机械与能源工程学院,上海201804

出　　处：《电源技术》2025年第3期624-630,共7页Chinese Journal of Power Sources

基　　金：国家重点研发计划课题(2023YFB4006304)。

摘　　要：建立了气液逆流撞击作用下PEMFC加湿数值模型,研究高温、高压、可变工况下喷淋加湿过程气液耦合物理场,获得了不同逆向气体流速下单喷嘴加湿特性。数值研究表明:当气流速度保持为0.5 m/s时,喷淋加湿区域内径从250 mm减少至75 mm后,出口截面气体平均相对湿度提升2.88倍。其次,当气体流速上升至10 m/s后,两种尺寸区域内单喷嘴加湿能力分别下降50.12%和9.62%。A numerical model of PEMFC humidification under gas-liquid countercurrent impact was established to study the gas-liquid coupling physical field of spray humidification process under high temperature,high pressure,and variable operating conditions.It could be found that the average relative humidity of the gas in the outlet section increases by 2.88 times after the inner diameter of the spray humidification area is reduced from 250 mm to 75 mm when the gas flow speed is maintained at 0.5 m/s.And the humidification capacity of a single nozzle in the two size regions decreases by 50.12%and 9.62%respectively if the gas flow rate increases to 10 m/s.

关 键 词：PEMFC 加湿 喷淋 气液逆流 罐径 

分 类 号：TM911[电气工程—电力电子与电力传动]