Hunan Electric Power ›› 2023, Vol. 43 ›› Issue (6): 31-36.doi: 10.3969/j.issn.1008-0198.2023.06.006

• Researches and Tests • Previous Articles     Next Articles

Study on Effects of Fuel Gas Parameters on Discharge Characteristics of Solid Oxide Fuel Cells

LIU Hanyu1, JI Xuanyu1,2, ZHOU Xiong1,2, YANG Yu1   

  1. 1. Chongqing University of Science and Technology, Chongqing 401331, China;
    2. Provincial and Ministerial Collaborative Innovation Center for Domestic Garbage Resource Treatment, Chongqing 401331, China
  • Received:2023-09-11 Revised:2023-10-05 Online:2023-12-25 Published:2024-01-07

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Abstract: Solid oxide fuel cell (SOFC) technology is a clean and efficient power generation technology, and its high temperature characteristics make it easy to realize cogeneration, which has a good development prospect. In order to investigate the influence of different fuel gas parameters on the discharge characteristics of SOFC, a 500W SOFC experimental rig was built, and hydrogen discharge experiments, methane dry reforming discharge experiments, and durability experiments were conducted to analyze the influence of fuel gas flow rate and CH4/CO2 inlet ratio on the open-circuit voltage and electric power. The results show that with the increase of fuel flow, the open-circuit voltage of the battery, the power will increase, and the increase tends to stabilize at 2 L/min.When QCO2/QCH4=1∶1 and CH4 flow rate is 2 L/min, the methane dry reforming discharge performance is the best. When QCO2/QCH4=1.5, the SOFC discharge performance is less affected by the flow rate, and under this inlet ratio, it is more conducive to achieve low fuel flow rate and high current density discharge to maximize the SOFC discharge power.

Key words: solid oxide fuel cell, hydrogen, methane dry reforming, intake ratio, intake flow rate

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