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균질 및 비균질 이온교환막의 전기와류 유동 가시화 비교 연구
조명현(MyeongHyeon Cho),이서현,양대종(Daejong Yang),김범주(Bumjoo Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The Electro-membrane process has advantages in sustainability, scalability, and eco-friendliness, so it is used in various fields such as electrodialysis, reverse electrodialysis, and PEMFC. In this study, the effect of the homogeneity and heterogeneity of the IEM (ion exchange membrane) on electroconvection and flow is investigated by visualizing the flow in micro channels. Nafion211 used in PEMFC was used as a homogeneous IEM, and Ralex Membrane was used as a heterogeneous IEM. As a result of the experiment, in the case of a heterogeneous IEM, electroconvection occurs quickly due to the heterogeneity of the surface, and the number of electroconvection is larger and the size is larger. In the experiment to which a non-conductive pattern of the surface using ultra-fine laser processing is given, the size of the electroconvection is formed smaller as the pattern size decreases.
균질 및 비균질 이온교환막의 전기와류 유동 가시화 비교 연구
조명현(MyeongHyeon Cho),이서현,양대종(Daejong Yang),김범주(Bumjoo Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The Electro-membrane process has advantages in sustainability, scalability, and eco-friendliness, so it is used in various fields such as electrodialysis, reverse electrodialysis, and PEMFC. In this study, the effect of the homogeneity and heterogeneity of the IEM (ion exchange membrane) on electroconvection and flow is investigated by visualizing the flow in micro channels. Nafion211 used in PEMFC was used as a homogeneous IEM, and Ralex Membrane was used as a heterogeneous IEM. As a result of the experiment, in the case of a heterogeneous IEM, electroconvection occurs quickly due to the heterogeneity of the surface, and the number of electroconvection is larger and the size is larger. In the experiment to which a non-conductive pattern of the surface using ultra-fine laser processing is given, the size of the electroconvection is formed smaller as the pattern size decreases.