An experimental study of cell performance and pressure drop of proton exchange membrane fuel cells with baffled flow channels

被引：69

作者：

Chen, Hao ^{[1
,2
]}

Guo, Hang ^{[1
,2
]}

Ye, Fang ^{[1
,2
]}

Ma, Chong Fang ^{[1
,2
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing, Peoples R China

[2] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Heat Transfer & Energy Convers, Beijing, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2020年 / 472卷

基金：

中国国家自然科学基金;

关键词：

Proton exchange membrane fuel cell; Pressure drop; Pumping power; Cell performance; Baffled flow channel; 2-PHASE FLOW; MASS-TRANSFER; TEMPERATURE DISTRIBUTION; REACTANT TRANSPORT; NUMERICAL-ANALYSIS; ANALYTICAL-MODEL; ANODIC SURFACE; WATER REMOVAL; METAL FOAM; FIELD;

D O I：

10.1016/j.jpowsour.2020.228456

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 pressure drops and pumping powers in flow channels of proton exchange membrane fuel cells are major standards to evaluate flow channel structures. Baffled flow channels provide higher performance, while the pressure drop and pumping power both aggravate. In this work, the impact of baffle leeward length on power output and pressure drops of proton exchange membrane fuel cells are experimentally studied. The pumping power, net power and power efficiency are calculated as well. Experimental results indicate that pressure drops increase when adding baffles in channels, and longer leeward lengths result in lower pressure drops. Higher cell temperature results in lower pressure drops. The time consuming for stabilizing pressure drop are shortened when using baffles having longer leeward lengths. The net power is increased when using larger baffles, and the highest net powers occur under the temperature of 333K or 343K. In addition, raising the cell temperature can increase the power efficiency, and when the leeward lengths of baffles are decreased, the power efficiency is also decreased. When using baffle without sloping leeward sides, the power efficiency can be decreased to 45.14% under lower cell temperature of 323K.

引用

页数：11

共 45 条

[1] An investigation of the PEM fuel cells performance with partially restricted cathode flow channels and metal foam as a flow distributor [J].