Visualization of flooding in operating fuel cell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Flooding has been considered one of the important issues for the limitation of performance and durability of fuel cell. The flooding in fuel cell is investigated by developing visualization system with high spatial resolution, which is designed to give close images and movies of emergence, coalesce and removal of droplets in fuel cell. It has been shown that capillary force plays dominant role in liquid removal at low flow velocity, which is a typical operating condition in fuel cell. Increasing the hydrophilic properties of side walls and front wall of flow channel will result in higher liquid spreading and removal rates, while larger contact angle on GDL surface is preferred. The spreading time on front surface could be greatly reduced by decreasing the width of the flow channel. To get a stable performance of fuel cell, the water accumulation rate should be designed to be smaller that the ability of water removal.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Power Conference, 2005
Subtitle of host publicationIncludes Papers from the 2005 International Conference on Power Engineering, ICOPE
PublisherAmerican Society of Mechanical Engineers
Pages1001-1010
Number of pages10
ISBN (Print)0791841820, 9780791841822
DOIs
StatePublished - Jan 1 2005
Event2005 ASME Power Conference - Chicago, IL, United States
Duration: Apr 5 2005Apr 7 2005

Publication series

NameProceedings of the ASME Power Conference, 2005
VolumePART B

Other

Other2005 ASME Power Conference
CountryUnited States
CityChicago, IL
Period4/5/054/7/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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