PEM水电解池渐变型流场结构的传质和性能研究

孙聪; 时焕岗; 渠吉发; 于洋; 熊永恒; 谭文轶

doi:10.19912/j.0254-0096.tynxb.2023-0891

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (10) : 22-29. DOI: 10.19912/j.0254-0096.tynxb.2023-0891

PEM水电解池渐变型流场结构的传质和性能研究

孙聪^1,2, 时焕岗², 渠吉发², 于洋², 熊永恒², 谭文轶²

作者信息 +

STUDY ON MASS TRANSFER AND PERFORMANCE OF GRADUAL FLOW FIELD STRUCTURE IN PEM ELECTROLYSIS CELLS

Sun Cong^1,2, Shi Huan'gang², Qu Jifa², Yu Yang², Xiong Yongheng², Tan Wenyi²

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文章历史 +

摘要

传统质子交换膜（PEM）水电解池的平行、蛇形等流场由于传质不佳导致电性能下降。针对于此,该研究提出一种渐变型流场,通过数值模拟的方法,比较正、反向进水（分别记作渐变Ⅰ型、渐变Ⅱ型）两个条件下,流场内流速、压力、气体分布以及电流密度分布变化,并与平行、蛇形流场对比。结果表明,渐变Ⅰ型流场的压降仅次于平行流场,具有较高的流速且也能够有效快速排出气体,平均电流密度高于蛇形流场8%,高于平行流场4%。采用渐变Ⅰ型流场的质子交换膜水电解池具有更优的电性能。

Abstract

The parallel and serpentine flow fields of the traditional proton exchange membrane （PEM） electrolysis cells have poor electrical performance, due to weak mass transfer. In view of this, this paper proposed a gradually-varied flow field. The changes of flow velocity, pressure, gas distribution and current density distribution in the flow field under different inflow directions （denoted as gradual Ⅰ-type and gradual Ⅱ-type, respectively） were compared by numerical simulation. The results show that the pressure drop of the gradual Ⅰ-type flow field is second only to the parallel flow field, which has a higher flow velocity and can also effectively and rapidly discharge gas. The average current density achieved by gradual Ⅰ-type flow field is 8% higher than that of the serpentine and 4% higher than that of the parallel. The PEM electrolysis cells with gradual Ⅰ-type flow field has better electrical performance.

导出引用

孙聪, 时焕岗, 渠吉发, 于洋, 熊永恒, 谭文轶. PEM水电解池渐变型流场结构的传质和性能研究[J]. 太阳能学报. 2024, 45(10): 22-29 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0891

Sun Cong, Shi Huan'gang, Qu Jifa, Yu Yang, Xiong Yongheng, Tan Wenyi. STUDY ON MASS TRANSFER AND PERFORMANCE OF GRADUAL FLOW FIELD STRUCTURE IN PEM ELECTROLYSIS CELLS[J]. Acta Energiae Solaris Sinica. 2024, 45(10): 22-29 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0891

中图分类号： TM911

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