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

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

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Numerical Simulation on Gas Purge After Shutdown in Proton Exchange Membrane Fuel Cell
DOI:
                        10.11908/j.issn.0253-374x.2017.12.019
                    
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                        XU PengXU Peng
College of Automotive Studies, Tongji University, Shanghai 201804, China
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GAO YuanGAO Yuan
College of Automotive Studies, Tongji University, Shanghai 201804, China
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XU SichuanXU Sichuan
College of Automotive Studies, Tongji University, Shanghai 201804, China
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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

Reference

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XU Peng, GAO Yuan, XU Sichuan. Numerical Simulation on Gas Purge After Shutdown in Proton Exchange Membrane Fuel Cell[J].同济大学学报(自然科学版),2017,45(12):1873~1878

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Received:January 03,2017
Revised:October 18,2017
Adopted:September 02,2017
Online: December 29,2017
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