円筒型内部改質SOFCの性能解析(熱工学,内燃機関,動力など)

概要

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A solid oxide fuel cell (SOFC) is one of the promising candidates for the distributed energy systems because of its high electric power generation efficiency and exhaust gas utilization. The exhaust heat from the SOFC can be utilized for the fuel reforming because the operating temperature is very high. In the indirect internal reforming SOFC, the optimum heat exchange is achieved by coupling the endothermic reforming reaction to the exothermic electrode reaction. In this study, the internal processes of the tubular type internal reforming SOFC are analyzed taking into account the heat and mass transfer, electrode reaction and transport of electron and oxygen ion. The temperature distributions in cell components affected by the catalyst density of reformer are investigated. The effects of current density and anode gas recirculation on the cell performance are also studied. It is noted that the large temperature difference in the cell components is prevented by decreasing the catalyst density. The thermal efficiency is improved by decreasing the current density and promoting the anode gas recirculation.
一般社団法人日本機械学会の論文
2005-01-25