TY - JOUR
T1 - The energy performance improvement of a PEM fuel cell with various chaotic flowing channels
AU - Dong, Pengcheng
AU - Jia, Yuxin
AU - Xie, Gongnan
AU - Ni, Meng
N1 - Publisher Copyright:
© 2019 John Wiley & Sons, Ltd.
PY - 2019/8
Y1 - 2019/8
N2 - To improve the energy performance of a proton exchange membrane fuel cell (PEMFC), novel chaotic structures are proposed and numerically evaluated for replacing straight types in the serpentine gas diffusion flow channels. The numerical model is verified by the available experimental data. Nine cases (chaotic channels, Cases A2, B1, B2, C1, C2, D1, D2, E1, and E2) and a baseline case (straight flow channel, Case A1) are evaluated, and the detailed temperature and the flow characteristics are presented and analyzed. The influences of the main design parameters including the corner angle, bends number, and datum surface number are also analyzed and concluded. It is found that the newly proposed chaotic structures can improve not only the temperature uniformity, but also the maximum output power and the energy efficiency of the PEMFC. Compared with a traditional PEMFC, the power output of the new PEMFCs with chaotic flowing channels can be improved by 6.26% and the efficiency of PEMFC can be promoted by 8.40%.
AB - To improve the energy performance of a proton exchange membrane fuel cell (PEMFC), novel chaotic structures are proposed and numerically evaluated for replacing straight types in the serpentine gas diffusion flow channels. The numerical model is verified by the available experimental data. Nine cases (chaotic channels, Cases A2, B1, B2, C1, C2, D1, D2, E1, and E2) and a baseline case (straight flow channel, Case A1) are evaluated, and the detailed temperature and the flow characteristics are presented and analyzed. The influences of the main design parameters including the corner angle, bends number, and datum surface number are also analyzed and concluded. It is found that the newly proposed chaotic structures can improve not only the temperature uniformity, but also the maximum output power and the energy efficiency of the PEMFC. Compared with a traditional PEMFC, the power output of the new PEMFCs with chaotic flowing channels can be improved by 6.26% and the efficiency of PEMFC can be promoted by 8.40%.
KW - Chaotic geometry
KW - Current-power curves
KW - Energy efficiency
KW - PEMFC
KW - Pressure drop
KW - Temperature uniformity
UR - http://www.scopus.com/inward/record.url?scp=85067347375&partnerID=8YFLogxK
U2 - 10.1002/er.4665
DO - 10.1002/er.4665
M3 - 文章
AN - SCOPUS:85067347375
SN - 0363-907X
VL - 43
SP - 5460
EP - 5478
JO - International Journal of Energy Research
JF - International Journal of Energy Research
IS - 10
ER -
