Low gas velocity of PEMFC aided by gravity water drainage

doi:10.3969/j.issn.0438-1157.2014.z1.067

CIESC Journal ›› 2014, Vol. 65 ›› Issue (S1): 415-420.DOI: 10.3969/j.issn.0438-1157.2014.z1.067

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Low gas velocity of PEMFC aided by gravity water drainage

PEI Houchang¹, TU Zhengkai², LIU Zhichun¹, SHEN Jun¹, QIU Zizhao¹, LIU Fan¹, LIU Wei¹

1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;
2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received:2014-02-11 Revised:2014-02-21 Online:2014-05-30 Published:2014-05-30
Supported by:
supported by the National High Technology Research and Development Program of China(2012AA1106016).

低流速燃料电池重力辅助排水

裴后昌¹, 涂正凯², 刘志春¹, 沈俊¹, 邱子朝¹, 刘帆¹, 刘伟¹

1. 华中科技大学能源与动力工程学院, 湖北武汉 430074;
2. 武汉理工大学材料复合新技术国家重点实验室, 湖北武汉 430070

通讯作者: 刘伟
基金资助:
国家高技术研究发展计划项目（2012AA1106016）。

Abstract

Abstract: Low gas velocity in proton exchange membrane fuel cell (PEMFC) can be occurred as gas distribution inconformity. Low gas velocity of PEMFC aided by gravity water drainage was investigated experimentally. It released that gravity can help droplets separate from gas diffusion layer (GDL) which help the liquid water drainage from PEMFC stack too. The experiment released that the performance of stack will be the best when the cathode downward and the droplet gravity accordance to the orientation of the droplet separate from GDL; Gravity drops consistent with the direction of purge gas in the PEMFC stack when the channel was vertical which improved the water management. In different orientation of PEMFC stack channel the output of stack would be increasing as the temperature rising when the reaction gas flow rate was low. The gas humidification had little effect on stack performance when the channel was vertical. It should be avoided that the cathode was horizontal and upwards when the stack was working.

Key words: fuel cells, drainage, low velocity, gravity, water management

摘要： 实验研究了反应气体低流速下质子交换膜燃料电池内液滴自身重力对电池性能的影响。结果显示，自身重力有利于液滴脱离气体扩散层，使液态水有效排出电池堆。电池水平放置阴极向下时，液滴重力与其脱离气体扩散层方向一致，电池性能最佳；电池竖直放置时，液滴重力与气体将其吹扫出电池方向一致，其向外排水能力最强。反应气体流速较低时，电池在不同放置方式下，提高其温度，电池性能上升；电池竖直放置时，气体加湿对电池性能影响不大。电池测试时，应该避免电池阴极水平向上。

关键词: 燃料电池, 排水, 低流速, 重力, 水管理

CLC Number:

TM911.4

PEI Houchang, TU Zhengkai, LIU Zhichun, SHEN Jun, QIU Zizhao, LIU Fan, LIU Wei. Low gas velocity of PEMFC aided by gravity water drainage[J]. CIESC Journal, 2014, 65(S1): 415-420.

裴后昌, 涂正凯, 刘志春, 沈俊, 邱子朝, 刘帆, 刘伟. 低流速燃料电池重力辅助排水[J]. 化工学报, 2014, 65(S1): 415-420.

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Low gas velocity of PEMFC aided by gravity water drainage

低流速燃料电池重力辅助排水

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