质子交换膜燃料电池停机后吹扫仿真

doi:10.11908/j.issn.0253-374x.2017.12.019

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质子交换膜燃料电池停机后吹扫仿真
DOI:
                        10.11908/j.issn.0253-374x.2017.12.019
                    
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作者:
                        许澎许澎
同济大学 汽车学院，上海 201804
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高源高源
同济大学 汽车学院，上海 201804
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许思传许思传
同济大学 汽车学院，上海 201804
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作者单位:同济大学 同济大学新能源汽车工程中心,同济大学 同济大学新能源汽车工程中心,同济大学 同济大学新能源汽车工程中心
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中图分类号:TM911.4
基金项目:上海市科委面向产业化的燃料电池动力系统项目（2015BAG06B00）

Numerical Simulation on Gas Purge After Shutdown in Proton Exchange Membrane Fuel Cell

Author:

XU Peng
XU Peng
College of Automotive Studies, Tongji University, Shanghai 201804, China
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GAO Yuan
GAO Yuan
College of Automotive Studies, Tongji University, Shanghai 201804, China
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XU Sichuan
XU Sichuan
College of Automotive Studies, Tongji University, Shanghai 201804, China
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摘要:

基于单电池内部水相变和传递的机理建立了燃料电池一维吹扫水传递模型，研究了空气同时吹扫阴阳极方法中电池温度、吹扫气体流量对吹扫的影响，并且对比了氢气和氧气分别作为阳极吹扫气体对吹扫效果的影响.仿真结果表明:吹扫初始时刻存在水从阴极到阳极的反扩散现象；电池温度对吹扫的影响程度大于流量对吹扫的影响程度，并且温度越高，膜含水量减少越快；空气吹扫阳极气体既节能又省时.

关键词:质子交换膜燃料电池(PEMFC);吹扫;含水量

Abstract:

Based on water phase change and water transport phenomenon during gas purge in proton exchange membrane fuel cell (PEMFC), a onedimensional water transport model during gas purge is developed to investigate the effect of two important factors, i.e., stack temperature and gas flow rate on the purge effectiveness. The impact of hydrogen or oxygen as anode purge gas is also compared. The simulation results show that the backdiffusion from cathode to anode is significant during initial gas purge and the impact of stack temperature is much greater than flow rate. It is efficient to use oxygen as purge gas in anode.

Key words:proton exchange membrane fuel cell(PEMFC); gas purge; membrane water content

参考文献

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许澎,高源,许思传.质子交换膜燃料电池停机后吹扫仿真[J].同济大学学报(自然科学版),2017,45(12):1873~1878

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收稿日期:2017-01-03
最后修改日期:2017-10-18
录用日期:2017-09-02
在线发布日期: 2017-12-29
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