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황하나(Hana Hwang),정수영(Su-young Jung),김범기(Boem-gi Kim),김형만(Hyung-man Kim),서호철(Ho-cheol Suh),박현영(Hyun-Young Park) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.10-2
Proton exchange membrane (PEM) fuel cell has been estimated to lead future energy and researched to improve its performance and durability. In this study, we researched dependence of channel"s height and flow direction in serpentine channel flow field over numerical analysis. Flow direction affects gas concentration on the outlet of cathode side because of pressure drop. When we exchange anode and cathode side each other, water can be distributed equally over the membrane by back diffusion which partly cross over the membrane from the cathode to the anode and it makes uniformity of current density. As the results, we expect to improve the performance of PEM Fuel Cell. As channel height increases compared to the base design and the cross-sectional area increases, pressure drop is decreased and reactant gas concentration decreases. There is a trade-off between the positive parasitic power decrease and the negative electrochemical reaction decrease.