Publicado 4 números por año
ISSN Imprimir: 2169-2785
ISSN En Línea: 2167-857X
Indexed in
VISUAL OBSERVATION OF TWO-PHASE FLOW IN INTERDIGITATED CHANNELS OF A DIRECT METHANOL FUEL CELL
SINOPSIS
A liquid-feed direct methanol fuel cell (DMFC) is considered a promising choice of next-generation primary or auxiliary power devices. In this study, a DMFC with a transparent window was designed to investigate the two-phase flow phenomenon in anode interdigitated channels. With the aid of visualization technology, the effect of the two-phase flow behaviors coupled with chemical reactions on the performance of the DMFC under different current densities, methanol flow rates, and cell temperatures was studied. Results indicated the gradual increase in the number and size of bubbles with the increase of current density. High methanol flow rate could promote the movement of the gas bubbles. Fine bubble flow was the typical two-phase flow in outlet channels, and slug flow exists in outlet manifold. Gas quality, average bubble size, and gas columns increased with cell temperature. Moreover, the performance of the DMFC was promoted. Cell temperature had a significant effect on cell performance. By contrast, the effect of mass transfer deterioration caused by the CO2 bubbles could be ignored.
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Giacoppo Giosuè, Cipitì Francesco, Barbera Orazio, Mathematical modeling approaches in direct methanol fuel cells, in Direct Methanol Fuel Cell Technology, 2020. Crossref
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Su Xiaoqing, Yuan Wei, Lu Biaowu, Zheng Tianxiang, Ke Yuzhi, Zhuang Ziyi, Zhao Yonghao, Tang Yong, Zhang Shiwei, CO2 bubble behaviors and two-phase flow characteristics in single-serpentine sinusoidal corrugated channels of direct methanol fuel cell, Journal of Power Sources, 450, 2020. Crossref