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Article: Treatment of two-phase flow in cathode gas channel for an improved one-dimensional proton exchange membrane fuel cell model

TitleTreatment of two-phase flow in cathode gas channel for an improved one-dimensional proton exchange membrane fuel cell model
Authors
KeywordsGas Channel Flooding
Inlet Gas Conditions
Proton Exchange Membrane Fuel Cell
Two-Phase Flow
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydene
Citation
International Journal Of Hydrogen Energy, 2011, v. 36 n. 6, p. 3941-3955 How to Cite?
AbstractIt has been reported recently that water flooding in the cathode gas channel has significant effects on the characteristics of a proton exchange membrane fuel cell. A better understanding of this phenomenon with the aid of an accurate model is necessary for improving the water management and performance of fuel cell. However, this phenomenon is often not considered in the previous one-dimensional models where zero or a constant liquid water saturation level is assumed at the interface between gas diffusion layer and gas channel. In view of this, a one-dimensional fuel cell model that includes the effects of two-phase flow in the gas channel is proposed. The liquid water saturation along the cathode gas channel is estimated by adopting Darcy's law to describe the convective flow of liquid water under various inlet conditions, i.e. air pressure, relative humidity and air stoichiometry. The averaged capillary pressure of gas channel calculated from the liquid water saturation is used as the boundary value at the interface to couple the cathode gas channel model to the membrane electrode assembly model. Through the coupling of the two modeling domains, the water distribution inside the membrane electrode assembly is associated with the inlet conditions. The simulation results, which are verified against experimental data and simulation results from a published computational fluid dynamics model, indicate that the effects of relative humidity and stoichiometry of inlet air are crucial to the overall fuel cell performance. The proposed model gives a more accurate treatment of the water transport in the cathode region, which enables an improved water management through an understanding of the effects of inlet conditions on the fuel cell performance. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/155606
ISSN
2015 Impact Factor: 3.205
2015 SCImago Journal Rankings: 1.330
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWong, KHen_US
dc.contributor.authorLoo, KHen_US
dc.contributor.authorLai, YMen_US
dc.contributor.authorTan, SCen_US
dc.contributor.authorTse, CKen_US
dc.date.accessioned2012-08-08T08:34:20Z-
dc.date.available2012-08-08T08:34:20Z-
dc.date.issued2011en_US
dc.identifier.citationInternational Journal Of Hydrogen Energy, 2011, v. 36 n. 6, p. 3941-3955en_US
dc.identifier.issn0360-3199en_US
dc.identifier.urihttp://hdl.handle.net/10722/155606-
dc.description.abstractIt has been reported recently that water flooding in the cathode gas channel has significant effects on the characteristics of a proton exchange membrane fuel cell. A better understanding of this phenomenon with the aid of an accurate model is necessary for improving the water management and performance of fuel cell. However, this phenomenon is often not considered in the previous one-dimensional models where zero or a constant liquid water saturation level is assumed at the interface between gas diffusion layer and gas channel. In view of this, a one-dimensional fuel cell model that includes the effects of two-phase flow in the gas channel is proposed. The liquid water saturation along the cathode gas channel is estimated by adopting Darcy's law to describe the convective flow of liquid water under various inlet conditions, i.e. air pressure, relative humidity and air stoichiometry. The averaged capillary pressure of gas channel calculated from the liquid water saturation is used as the boundary value at the interface to couple the cathode gas channel model to the membrane electrode assembly model. Through the coupling of the two modeling domains, the water distribution inside the membrane electrode assembly is associated with the inlet conditions. The simulation results, which are verified against experimental data and simulation results from a published computational fluid dynamics model, indicate that the effects of relative humidity and stoichiometry of inlet air are crucial to the overall fuel cell performance. The proposed model gives a more accurate treatment of the water transport in the cathode region, which enables an improved water management through an understanding of the effects of inlet conditions on the fuel cell performance. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydeneen_US
dc.relation.ispartofInternational Journal of Hydrogen Energyen_US
dc.subjectGas Channel Floodingen_US
dc.subjectInlet Gas Conditionsen_US
dc.subjectProton Exchange Membrane Fuel Cellen_US
dc.subjectTwo-Phase Flowen_US
dc.titleTreatment of two-phase flow in cathode gas channel for an improved one-dimensional proton exchange membrane fuel cell modelen_US
dc.typeArticleen_US
dc.identifier.emailTan, SC:sctan@hku.hken_US
dc.identifier.authorityTan, SC=rp01606en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ijhydene.2010.12.092en_US
dc.identifier.scopuseid_2-s2.0-79952440279en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952440279&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume36en_US
dc.identifier.issue6en_US
dc.identifier.spage3941en_US
dc.identifier.epage3955en_US
dc.identifier.isiWOS:000289331800018-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridWong, KH=8380596800en_US
dc.identifier.scopusauthoridLoo, KH=7003558724en_US
dc.identifier.scopusauthoridLai, YM=7401512093en_US
dc.identifier.scopusauthoridTan, SC=26642772000en_US
dc.identifier.scopusauthoridTse, CK=7103295097en_US
dc.identifier.citeulike8786784-

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