Three Dimensional Computational Study on Proton Exchange Membrane Fuel Cell by Operation Conditions
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概要
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A single-phase, fully three-dimensional simulation model for a proton exchange membrane(PEM) fuel cell was used to examine the interdigitated flow field with electrochemical reaction and ion, electron, and water transport(electro-osmotic drag flux and back diffusion flux) through the polymer membrane. The numerical results showed that the fuel cell with an interdigitated flow field resulted in better performance than a fuel cell with a conventional flow field due to its strong convective transport across gas diffusion layer(GDL). However, the pressure drop in an interdigitated flow field is much greater than in conventional flow field. To investigate the effect of relative humidity on the performance of a PEM fuel cell, the humidification condition was set to 100% at the anode flow field and was changed by 0-100% at the cathode flow field. Maximum power density was obtained for a 70% humidified condition at the cathode where the oxygen concentration is moderately high while maintaining high ion conductivity at the polymer membrane.
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- 都心5区で目立つ価格上昇 三井不動産は強気 (特集 マンション大波乱--都心圧勝・価格破壊・管理トラブル) -- (首都圏編)
- 超高層・大型53物件建設計画マップ (特集 マンション大波乱--都心圧勝・価格破壊・管理トラブル) -- (首都圏編)
- 様変わりする購入者層 売れるのは超高層・大型物件 (特集 マンション大波乱--都心圧勝・価格破壊・管理トラブル) -- (首都圏編)
- 首都圏編 (特集 マンション大波乱--都心圧勝・価格破壊・管理トラブル)
- 特集 マンション大波乱--都心圧勝・価格破壊・管理トラブル