D201 供給ガス条件とセパレーター構造がPEFC単セル内温度面分布および発電性能に及ぼす影響評価(OS4 水素・燃料電池),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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The aim of this study is pointing out the dominant factors of transfer phenomena such as heat, mass and electric charge and the main reason for distribution about them in a single-cell PEFC. We have investigated the influence of relative humidity of gas flow at inlet and gas channel pitch of separator on in-plane temperature distribution and power generation characteristics. As a result, a good power generation performance is obtained regardless of relative humidity when the stoichiometric ratio of gas flow at inlet is set at 1.00. In-plane temperature distribution for relative humidity of 80% is uniform though the temperature at the region near the outlet becomes higher for relative humidity of 40%. The cooling effect of convection heat transfer by excess gas flow is bigger with the decrease in relative humidity. It is known that total voltage becomes higher with the decrease in gas channel pitch regardless of relative humidity.
一般社団法人日本機械学会の論文
2010-06-20