Design of thermal self supported 700 W class, solid oxide fuel cell module using, LSGM thin film micro tubular cells

Naoki Watanabe, Toshiharu Ooe, Tatsumi Ishihara

    研究成果: ジャーナルへの寄稿学術誌査読

    21 被引用数 (Scopus)

    抄録

    Thermal self supporting SOFC module was studied under various conditions for high energy conversion efficiency. In order to achieve high energy conversion efficiency even under partial load condition, SOFC module and system was designed to operate at intermediate temperature by using LaGaO3 based oxide film electrolyte. Heat loss, Qheatloss is requested to be diminished as much as possible by decreasing heat radiation and exhaust gas heat from module. SOFC module with 700 W was successfully demonstrated in thermal self-supported state under various conditions. SOFC module can be thermally self-supported within a limited temperature range (841-886 K) but energy conversion efficiency decreases with decreasing current density, because of the limited fuel and air utilization from heat value requested for thermal self-support. In this study, the energy conversion efficiency of the 700 W module shows ca. 47% low heat value (LHV) at 700 W output power with fuel utilization of 75% and even at 250 W partial load, efficiency is ca. 30% achieved. For achieving the high energy conversion efficiency in partial load mode and self-thermal supported condition, decrease in heat loss, in particular, 400 W is strongly requested.

    本文言語英語
    ページ(範囲)117-123
    ページ数7
    ジャーナルJournal of Power Sources
    199
    DOI
    出版ステータス出版済み - 2月 1 2012

    !!!All Science Journal Classification (ASJC) codes

    • 再生可能エネルギー、持続可能性、環境
    • エネルギー工学および電力技術
    • 物理化学および理論化学
    • 電子工学および電気工学

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