Design and analysis of hydrogen supply system for a fuel cell engine
LIU Liming
REN Chongchong
LIU Min
WANG Guihua
BAI Shuzhan
LI Guoxiang
Abstract：Analyze the characteristics of three hydrogen supply system layouts:circulation,closed-loop,and circulation.Based on a hydrogen fuel cell stack with a power of 150 kW,the layout scheme of the circulation hydrogen supply system is improved,a simulation model of the fuel cell engine system is built,and orthogonal experimental design method is used to simulate and analyze nine different battery working states.The effects of the rotational speed of the circulation pump,exhaust cycle,and exhaust time on the performance of the fuel cell system are investigated.The simulation results show that the volume fraction of nitrogen at the anode of the fuel cell increases with the increase of current;the rotational speed of the circulating pump has no effect on the volume fraction of nitrogen gas in the anode of the fuel cell stack;when the exhaust cycle is less than 10 s,the exhaust duration should be appropriately reduced;when the exhaust cycle is greater than 20 s,the exhaust duration should be appropriately increased;the volume flow rate of anode hydrogen increases with the increase of current,while the excess ratio of hydrogen decreases with the increase of current.
Keywords：hydrogen fuel cellhydrogen recirculation systemanodesimulation
Publication Date：2024-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 46-53 )