Effect of flow regime of circulating water on a proton exchange membrane electrolyzer

被引:160
作者
Ito, H. [1 ]
Maeda, T. [1 ]
Nakano, A. [1 ]
Hasegawa, Y. [1 ,2 ]
Yokoi, N. [2 ]
Hwang, C. M. [3 ]
Ishida, M. [3 ]
Kato, A. [4 ]
Yoshida, T. [5 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058564, Japan
[2] Tokyo Inst Technol, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[3] Univ Tsukuba, Tsukuba, Ibaraki 3058573, Japan
[4] Takasago Thermal Engn Co Ltd, Atsugi, Kanagawa 2430213, Japan
[5] Daiki Ataka Engn Co Ltd, Kashiwa, Chiba 2778515, Japan
关键词
Proton exchange membrane; Electrolysis; Flow field; Two-phase flow; PEM ELECTROLYSIS; 2-PHASE FLOW; HYDROGEN-PRODUCTION; ELECTROCHEMICAL-CELL; PERFORMANCE; EVOLUTION; ENERGY; SYSTEM; OXYGEN; MODEL;
D O I
10.1016/j.ijhydene.2010.06.103
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The flow characteristics of circulating water in a proton exchange membrane (PEM) electrolyzer were experimentally evaluated using a small cell and two-phase flow theory. Results revealed that when a two-phase flow of circulating water at the anode is either slug or annular, then mass transport of the water for the anode reaction is degraded, and that the concentration overvoltage increases at higher current density compared to that when the flow is bubbly. In a serpentine-dual flow field, when both phases of the two-phase flow are assumed laminar, then the increase in pressure drop caused by the increase in gas production can be explained relatively well using the Lockhart-Martinelli method with the Chisholm parameter. The optimal flow rate of circulating water was also discussed based on mass balance analysis. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:9550 / 9560
页数:11
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