Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16397
Title: Mass transport enhancement in a proton exchange membrane fuel cell
Authors: POH HEE JOO
Keywords: PEM fuel cell, computational fluid dynamics, mass transport enhancement
Issue Date: 26-Nov-2009
Source: POH HEE JOO (2009-11-26). Mass transport enhancement in a proton exchange membrane fuel cell. ScholarBank@NUS Repository.
Abstract: The performance of typical forced convection and self air-breathing PEM fuel cell (ABFC) is simulated using the Computational Fuel Cell Dynamics approach. The model is first validated with close agreement with relevant published experimental data. For forced convection fuel cell, a flow structure which delivers the reactant transversely to the MEA using an impinging jet configuration at cathode side is proposed and modeled to examine its effectiveness for enhanced performance, especially at high current densities. A multiple impinging jet design is further suggested as an effective way to achieve flow and species uniformity with results in more uniform catalyst utilization. For ABFC, the effect of geometry factors (e.g. channel length and height), device orientation (horizontal, vertical or an inclined angle), and O2 transfer configuration (channel vs. planar) are investigated. New finding is established for the relationship between dominant mass transport modes with length scale of fuel cell. Based on the simulation results, an optimum design for ABFC is proposed.
URI: http://scholarbank.nus.edu.sg/handle/10635/16397
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Poh Hee Joo ME2009.pdf5.87 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

388
checked on Dec 11, 2017

Download(s)

466
checked on Dec 11, 2017

Google ScholarTM

Check


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