Please use this identifier to cite or link to this item:
Title: Modelling and analysis of a direct methanol fuel cell with under-rib mass transport and two-phase flow at the anode
Authors: Yang, Y.
Liang, Y.C. 
Keywords: Direct methanol fuel cell
Mathematical modelling of fuel cell
Methanol crossover
Two-phase flow
Under-rib mass transport
Issue Date: 1-Dec-2009
Citation: Yang, Y., Liang, Y.C. (2009-12-01). Modelling and analysis of a direct methanol fuel cell with under-rib mass transport and two-phase flow at the anode. Journal of Power Sources 194 (2) : 712-729. ScholarBank@NUS Repository.
Abstract: For the past decade, extensive mathematical modelling has been conducted on the design and optimization of liquid-feed direct methanol fuel cells (DMFCs). Detailed modelling of DMFC operations reveals that a two-phase flow phenomenon at the anode and under-rib convection due to the pressure difference between the adjacent channels both contribute significantly to mass-transfer in a DMFC and its output performance. In practice, comprehensive simulations based on the finite volume technique for two-phase flow require a high level of numerical complexity in computation. This study presents a complexity-reduced mathematical model that is developed to cover both phenomena for a realistic, but fast, in computation for the prediction and analysis of a DMFC prototype design. The simulation results are validated against experimental data with good agreement. Analysis of the DMFC mass-transfer is made to investigate methanol distribution at anode and its crossover through the proton-exchange membrane. From a comparison of the influence of two-phase flow and under-rib mass-transfer on DMFC performance, the significance of gas-phase methanol transport is established. Simulation results suggest that both the optimization of the flow-field structure and the fuel cell operating parameters (flow rate, methanol concentration and operating temperature) are important factors for competitive DMFC performance output. © 2009 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2009.06.023
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 23, 2019


checked on Mar 13, 2019

Page view(s)

checked on Oct 27, 2018

Google ScholarTM



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