可視化PEFCを用いた生成水の挙動観察に関する研究 : 二連サーペンタイン流路におけるプラグフロー発生機構(熱工学,内燃機関,動力など)

概要

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Output voltage stability and product water behaviour in cathode gas channel are observed by the visualization of PEFC with dual serpentine gas channel. Result show that output voltage drop starts at the beginning of plug flow and reaches minimum value at the end of it. Drop voltage is in proportion to plug flow locus length. The plug flow is diminished by leakage to the other channel through clearances between by-polar plate and gas diffusion layer, this indicates small bypass channel to the other channel makes plug flow small. Excess saturated water in the piping from humidifier to cathode gas inlet makes plug flow simultaneously in both channels. To avoid emergency stop under limited voltage, it is important to keep less saturated and condensed water at cathode air inlet by heat insulation and by setting water trap.
社団法人日本機械学会の論文
2006-03-25