Research on mass and heat transfer phenomena in micro-channels under freezing condition in PEM fuel cells

质子交换膜燃料电池冷冻条件下微通道传质传热现象研究

• 批准号: 14350098
• 负责人: CHIKAHISA Takemi
• 金额: $ 5.5万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350098/
• 关键词: Fuel Cell; PEFC; Polymer Electrolyte; Heat and mass transfer; Separator; Water Production; Visualization; Freezing; 固体高分子

Research was made to identify the phenomena of water production in thin micro-channels under variety of conditions including freezing temperatures Experimental apparatus was developed to allow visual observation of the phenomena inside in the fuel cell. The result of the experiment showed that cell voltage dropped in shorter time with larger current density and the limiting current densities allowing no voltage drop were identified for temperature conditions. Increasing operating pressure promotes water production, and this works preferable for the dry gas operation hut it deteriorates performance under freezing temperatures. Visual observation showed production and flows of liquid water in separator channels, sod good correlation was found between cell voltage change and open areas free from water plugging in channels. The experiment also showed the importance of uniform binding pressure of the cell for the uniform reactions over the cell area. No difference in the visual observation was recognized in the cell before and after the cell voltage drop under freezing conditions, but some change was detected by thermal camera. The meaning of this change will he further investigated in the next research.

研究了在包括冻结温度在内的各种条件下，在薄微通道中产生水的现象。开发了实验装置，以允许目视观察燃料电池内部的现象。实验结果表明，在较大的电流密度下，电池电压在较短的时间内下降，并确定了温度条件下不允许电压下降的极限电流密度。增加操作压力促进水的产生，并且这对于干气操作是优选的，但是它在冻结温度下劣化性能。目视观察显示了分离器通道中液态水的产生和流动，发现槽电压变化与通道中未被水堵塞的开口面积之间存在良好的相关性。实验还表明了均匀的细胞结合压力对于细胞区域上均匀反应的重要性。在冷冻条件下电池电压下降之前和之后，在电池中视觉观察中没有识别出差异，但是通过热照相机检测到一些变化。这一变化的意义将在今后的研究中进一步探讨。

项目成果

T.Takeda, A.Baba, Y.hishinuma, T.Chikahisa: "Performance of a Methanol Reforming System for a Fuel Cell Powered Vehicle and System Evaluation of a PEEC System"JSAE Review. 23. 183-188 (2002)

T.Takeda、A.Baba、Y.hishinuma、T.Chikahisa：“燃料电池动力车辆的甲醇重整系统的性能和 PEEC 系统的系统评估”JSAE 评论。

小川朋宏, 近久武美, 菊田和重: "凝縮水等により変動する固体高分子型燃料電池内の時系列温度分布計測"日本機械学会熱工学コンファレンス講演論文集. 483-484 (2003)

Tomohiro Okawa、Takemi Chikahisa、Kazushige Kikuta：“由于冷凝水等而波动的聚合物电解质燃料电池中的时间序列温度分布测量”，日本机械工程师学会热工会议论文集 483-484（2003 年）。

H.Yoshikawa, Y.Hishinuma, T.Chikahisa: "Performance of a Polymer Electrolyte Fuel Cell for Automotive Applications"Hear Transfer Asian Research. 31・6. 421-429 (2002)

H.Yoshikawa、Y.Hishinuma、T.Chikahisa：“用于汽车应用的聚合物电解质燃料电池的性能”Hear Transfer Asian Research 31・6（2002）。

高木康晴, 菱沼孝夫, 近久武美: "薄いマイクロチャンネル型セパレータを有するPEFCの性能に関する研究(凝縮水の生成と電池性能への影響)"日本機械学会論文集(B編). 69-679. 705-711 (2003)

Yasuharu Takagi、Takao Hishinuma、Takemi Chikahisa：“带有薄型微通道隔膜的 PEFC 性能研究（冷凝水的产生及其对电池性能的影响）”日本机械工程师学会汇刊（编辑 B）。 705-711（2003）

T.Takeda, A.Baba, Y.Hishinuma, T.Chikahisa: "Performance of a Methanol Reforming System for a Fuel Cell Powered Vehicle and System Evaluation of a PEFC System"JSAE Review. 23. 183-188 (2002)

T.Takeda、A.Baba、Y.Hishinuma、T.Chikahisa：“燃料电池动力车辆的甲醇重整系统的性能和 PEFC 系统的系统评估”JSAE 评论。