4-2-1 木質バイオマス利用発電システムの開発(4-2 エネルギーシステム2,Session 4 新エネルギー,研究発表)

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This paper describes the power generation efficiency in a solid oxide fuel cell (SOFC) using different multicomponent biogas as fuels, and the effect of operating temperature on the power generation efficiency is closely examined. It is experimentally found that biogas containing H_2, CO, CH_4, and CO_2 is suitable for SOFC. The power density and power generation efficiency observed when using the abovementioned mixture as the fuel are less than those observed when using pure hydrogen as the fuel; this is because of the increase in the composition of CO and CH_4. With pure hydrogen, maximum power density (0.142 W/cm^2) and power generation efficiency (LHV) (48.1%) are achieved at 1223 K under an output voltage of 0.708 V and current density of 0.2 A/cm^2. In contrast to the values with pure hydrogen, the gas containing methane resulted in the minimum power density (0.115 W/cm^2) and the minimum power generation efficiency (37.1%) at 1223 K under an output voltage of 0.577 V and a current density of 0.2 A/cm^2.
一般社団法人日本エネルギー学会の論文
2009-07-30