Evaluation criterion of cathode flow field in air-cooling proton exchange membrane fuel cells

被引：2

作者：

Zhou, Kehan

Liu, Zhiwei ^{[1
,2
]}

Qi, Mingjing ^{[1
,2
]}

Huang, Jianmei ^{[1
,3
,4
]}

Yan, Xiaojun ^{[1
,2
,3
,4
]}

机构：

[1] Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China

[2] Collaborat Innovat Ctr Adv Aeroengine, Beijing 100191, Peoples R China

[3] Natl Key Lab Sci & Technol Aeroengine Aerothermody, Beijing 100191, Peoples R China

[4] Beijing Key Lab Aeroengine Struct & Strength, Beijing 100191, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2024年 / 603卷

基金：

中国国家自然科学基金;

关键词：

Air-cooling PEMFC; Cathode flow field uniformity; Temperature distribution; Parasitic power; Single -cell voltage consistency; Evaluation criterion; OPTIMIZATION; PERFORMANCE; TEMPERATURE; PRESSURE; CHANNEL; PEMFC; STACK;

D O I：

10.1016/j.jpowsour.2024.234409

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：

In recent years, air-cooling proton exchange membrane fuel cells (PEMFCs) have become a priority choice for applications due to their lightweight and simple structure. In this work, the mechanism of cathode flow field characteristics on PEMFC performance is revealed, and the evaluation criterion of the cathode flow field is proposed. A 2 kW PEMFC stack of 100 cells is used, and the different uniformity and airflow rate of the cathode flow field are achieved by varying the position and number of cathode fans with a constant total parasitic fan power. The PEMFC power, cathode temperature distribution, and single-cell voltage consistency of different configurations are evaluated. The results show that the maximum difference in output power and maximum temperature of different PEMFC cathode flow field configurations reach 6.5% and 22.3%, respectively. Three key parameters are proposed to evaluate the PEMFC cathode flow field: total uniformity rate can evaluate the overall uniformity of the PEMFC cathode flow field, vertical uniformity rate can be used to predict and evaluate the single-cell voltage consistency of the PEMFC stack, and cathode airflow rate determines the continuous operating power of the PEMFC stack. The evaluation criterion can guide the design and optimization of air-cooling PEMFCs.

引用

页数：11

共 46 条

[1]

Barnoon P, 2023, Int. J. Thermofluids, V20, DOI [10.1016/J.IJFT.2023.100422, DOI 10.1016/J.IJFT.2023.100422]

[2] Experimental study of the pressure drop in the cathode side of air-forced Open-cathode proton exchange membrane fuel cells [J].