Microcombustion for micro-tubular flame-assisted fuel cell power and heat cogeneration

JOURNAL OF POWER SOURCES

卷:413

Article

Milcarek, Ryan J.¹  Nakamura, Hisashi²  Tezuka, Takuya²  Maruta, Kaoru²  Ahn, Jeongmin³ 

[1] Arizona State Univ, Sch Engn Matter Transport & Energy, 501 E Tyler Mall, Tempe, AZ 85287 USA

[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[3] Syracuse Univ, Dept Mech & Aerosp Engn, Syracuse, NY 13244 USA

关键词: Flame-assisted fuel cell (FFC);    Solid oxide fuel cell (SOFC);    Micro flow reactor;    Microcombustion;    Micro heat and power cogeneration;   

DOI  :  10.1016/j.jpowsour.2018.12.043

来源: Elsevier

【 摘 要 】

Flame-assisted fuel cell (FFC) studies have been limited to lower fuel-rich equivalence ratios (similar to 1-1.7, due to the upper flammability limit and sooting limit) where only small concentrations of H-2 and CO can be generated in the exhaust. In this work, a non-catalytic microcombustion based FFC is proposed for direct use of hydrocarbons for power generation. The potential for high FFC performance (450 mW cm(-2) power density and 50% fuel utilization) in propane/air microcombustion exhaust is demonstrated. The micro flow reactor is investigated as a fuel reformer for equivalence ratios from 1 to 5.5. One significant result is that soot formation in the micro flow reactor is not observed at equivalence ratios from 1 to 5.5 and maximum wall temperatures ranging from 750 to 900 degrees C. Soot formation is observed at higher wall temperatures of 950 degrees C and 1000 degrees C and equivalence ratios above 2.5. H-2 and CO concentrations in the exhaust are found to have a strong temperature dependence that varies with the maximum wall temperature and the local flame temperature.

【 授权许可】

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