Power and heat co-generation by micro-tubular flame fuel cell on a porous media burner
By Wang, Yuqing; Zeng, Hongyu; Shi, Yixiang; Cao, Tianyu; Cai, Ningsheng; Ye, Xiaofeng; Wang, Shaorong
Published in Energy
NULL
2016
Abstract
Abstract A flame fuel cell setup is designed and built based on a micro-tubular solid oxide fuel cell and a two-layer porous media burner. The stable operation limits of the burner are obtained by adjusting the inlet gas velocity and the equivalence ratio. Methane fuel-rich flames are stabilized inside the burner from the equivalence ratio of 1.4-1.8. The effects of the equivalence ratio and the gas velocity on the temperature distribution inside the burner and the combustion products are studied. Using a burner efficiency based on lower heating values, up to 41.1% of methane was converted to {H2} and {CO} at the equivalence ratio of 1.7. The maximum mole fraction of {H2} and {CO} reached 9.32% and 8.18% respectively. Flame fuel cell experiments are carried out with different equivalence ratios. The tubular {SOFC} is directly heated up and reduced by the fuel-rich flame. The maximum power generated by the flame fuel cell reached 0.55 W at the equivalence ratio of 1.7 and the inlet gas velocity of 0.15 m/s.
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