کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8075508 | 1521464 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the liquid water distributions in a 50Â cm2 PEM fuel cell: Effects of reactants relative humidity, current density, and cathode stoichiometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of the liquid water distributions in a 50Â cm2 PEM fuel cell: Effects of reactants relative humidity, current density, and cathode stoichiometry Investigation of the liquid water distributions in a 50Â cm2 PEM fuel cell: Effects of reactants relative humidity, current density, and cathode stoichiometry](/preview/png/8075508.png)
چکیده انگلیسی
A 50Â cm2 commercial PEM fuel cell has been used to investigate the effects of a set of different operating conditions on the resulting liquid water distributions in the cell. A comprehensive matrix of operating conditions was analyzed, varying the reactants relative humidity (anode and cathode), cathode stoichiometry, and cell current density. Neutron imaging was used to determine the liquid water distributions within the cell for each operating condition. The obtained neutron radiographs were post-processed and analyzed in order to assess the effects of the different operating conditions. Cell voltage and cell resistance (High Frequency Resistance) were also monitored during the experiments and included in the analysis. Overall, the well-known water distributions corresponding to serpentine flow fields were observed, featuring a progressive water accumulation along the gas flow and towards the outlet port. Cathode channels were showing water accumulation. It was found that the cathode relative humidity had a much larger effect on the cell water content and overall performance than the anode relative humidity for this particular cell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 82, 15 March 2015, Pages 914-921
Journal: Energy - Volume 82, 15 March 2015, Pages 914-921
نویسندگان
Alfredo Iranzo, Pierre Boillat, Johannes Biesdorf, Antonio Salva,