Experimental study on the evolution and distribution of interface heat characteristics in proton exchange membrane fuel cells with orientational channels.
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| Title: | Experimental study on the evolution and distribution of interface heat characteristics in proton exchange membrane fuel cells with orientational channels. |
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| Authors: | Guo, Zi Rui1 (AUTHOR), Chen, Hao1 (AUTHOR) chenh@bjut.edu.cn, Guo, Hang1 (AUTHOR), Gao, Zhe1 (AUTHOR), Ye, Fang1 (AUTHOR) |
| Source: | Journal of Power Sources. Dec2024, Vol. 623, pN.PAG-N.PAG. 1p. |
| Subjects: | Heat transfer, Calorimetry, Heat flux, Temperature distribution, Channel flow |
| Abstract: | Heat signals can evaluate the electrochemical reaction rate and heat transfer intensity in fuel cells, which have great impacts on power and durability of fuel cells. In this study, the film sensor is utilized to measure the temperature and heat flux of fuel cells, and the difference in heat characteristics between the straight channel fuel cell and the orientational channel fuel cell is studied experimentally for the first time. The results demonstrate that the current and temperature in the downriver segment of the straight channel fuel cell decay and fluctuate. Therefore, an orientational channel with baffles and tapered flow channels is designed, and the evolution and distribution of interface heat signals are investigated. The results indicate that the orientational channel improves reactant transmission and alleviates water flooding in the downriver segment. Thus, current and temperature increase, leading to a performance improvement of 16.9 %. Temperature and heat flux positively correlate with current; however, the temperature changes exhibit hysteresis. Meanwhile, changes in heat flux need to consider both heat generation and heat transmission. In comparison to a straight channel fuel cell, the performance of the orientational channel fuel cell proves more adaptable to changes in operating conditions. • Heat measurement of the orientational channel cell is carried out with film sensors. • Orientational cell with the tapered channel and baffles improves current by 16.9 %. • Temperature and heat flux are proportional to current while temperature is lagging. • PEMFC with orientational channel is more adaptable to changing operation conditions. • Orientational structure improves the uniformity of temperature distribution. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 180408218 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental study on the evolution and distribution of interface heat characteristics in proton exchange membrane fuel cells with orientational channels. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Guo%2C+Zi+Rui%22">Guo, Zi Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Hao%22">Chen, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chenh@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Hang%22">Guo, Hang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Zhe%22">Gao, Zhe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Fang%22">Ye, Fang</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Power+Sources%22">Journal of Power Sources</searchLink>. Dec2024, Vol. 623, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Calorimetry%22">Calorimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+flux%22">Heat flux</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+distribution%22">Temperature distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Channel+flow%22">Channel flow</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Heat signals can evaluate the electrochemical reaction rate and heat transfer intensity in fuel cells, which have great impacts on power and durability of fuel cells. In this study, the film sensor is utilized to measure the temperature and heat flux of fuel cells, and the difference in heat characteristics between the straight channel fuel cell and the orientational channel fuel cell is studied experimentally for the first time. The results demonstrate that the current and temperature in the downriver segment of the straight channel fuel cell decay and fluctuate. Therefore, an orientational channel with baffles and tapered flow channels is designed, and the evolution and distribution of interface heat signals are investigated. The results indicate that the orientational channel improves reactant transmission and alleviates water flooding in the downriver segment. Thus, current and temperature increase, leading to a performance improvement of 16.9 %. Temperature and heat flux positively correlate with current; however, the temperature changes exhibit hysteresis. Meanwhile, changes in heat flux need to consider both heat generation and heat transmission. In comparison to a straight channel fuel cell, the performance of the orientational channel fuel cell proves more adaptable to changes in operating conditions. • Heat measurement of the orientational channel cell is carried out with film sensors. • Orientational cell with the tapered channel and baffles improves current by 16.9 %. • Temperature and heat flux are proportional to current while temperature is lagging. • PEMFC with orientational channel is more adaptable to changing operation conditions. • Orientational structure improves the uniformity of temperature distribution. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jpowsour.2024.235357 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Heat transfer Type: general – SubjectFull: Calorimetry Type: general – SubjectFull: Heat flux Type: general – SubjectFull: Temperature distribution Type: general – SubjectFull: Channel flow Type: general Titles: – TitleFull: Experimental study on the evolution and distribution of interface heat characteristics in proton exchange membrane fuel cells with orientational channels. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Guo, Zi Rui – PersonEntity: Name: NameFull: Chen, Hao – PersonEntity: Name: NameFull: Guo, Hang – PersonEntity: Name: NameFull: Gao, Zhe – PersonEntity: Name: NameFull: Ye, Fang IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 03787753 Numbering: – Type: volume Value: 623 Titles: – TitleFull: Journal of Power Sources Type: main |
| ResultId | 1 |
