Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8818
Title: Treatment of two-phase flow in cathode gas channel for an improved one-dimensional proton exchange membrane fuel cell model
Authors: Wong, KH
Loo, KH 
Lai, YM 
Tan, SC
Tse, CK 
Keywords: Gas channel flooding
Inlet gas conditions
Proton exchange membrane fuel cell
Two-phase flow
Issue Date: 2011
Publisher: Pergamon Press
Source: International journal of hydrogen energy, 2011, v. 36, no. 6, p. 3941-3955 How to cite?
Journal: International journal of hydrogen energy 
Abstract: It 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.
URI: http://hdl.handle.net/10397/8818
ISSN: 0360-3199
EISSN: 1879-3487
DOI: 10.1016/j.ijhydene.2010.12.092
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

4
Last Week
0
Last month
0
Citations as of Oct 10, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
0
Citations as of Oct 13, 2017

Page view(s)

37
Last Week
0
Last month
Checked on Oct 15, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.