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Modeling and Validation of a Membrane Humidifier for PEM Fuel Cell Systems

Schumann, Peter and Krauss, Martin and Göbel, Winfried and Kallo, Josef and Friedrich, K. Andreas (2008) Modeling and Validation of a Membrane Humidifier for PEM Fuel Cell Systems. In: 5th Symposium on Fuel Cell Modelling and Experimental Validation, p. 19. 5th Symposium on Fuel Cell Modelling and Experimental Validation, 2008-03-11 - 2008-03-12, Winterthur (Switzerland).

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Official URL: http://www.icp.zhaw.ch/fileadmin/user_upload/engineering/_Institute_und_Zentren/ICP/modval/BookOfAbstracts.pdf

Abstract

In PEM fuel cell applications the humidification of the inflowing air is of significance since the electrical conductivity of the membrane and consequently the stack performance strongly depends on the water loading of the electrolyte. In this context a detailed dynamic simulation model describing a conventional passive membrane humidifier was developed and imple-mented into MATLAB/Simulink at the Institute of Technical Thermodynamics of the German Aerospace Centre (Deutsches Zentrum für Luft- und Raumfahrt e.V., DLR) in Stuttgart. The humidifier model is generally based on a finite volume approach balancing energy and mass flow along the main flow path for both wet and dry fluids. For the description of the heat flux a setting of stirred batch reactors was assumed. The energy transfer between the two flows is accomplished using the humidifier membrane as connecting element and thermal mass. The freely adjustable connection sequence of the single reactors allow furthermore for parallel-, counter- and crossflow configuration. The determination of the water exchange stream is carried out by a separate membrane submodule applying also a finite volume approach. The water concentration and loading difference between the flows and within the membrane define therein the driving force for the water diffusion. The water transfer is directed perpendicular to the main flow path.

Item URL in elib:https://elib.dlr.de/53717/
Document Type:Conference or Workshop Item (Speech)
Title:Modeling and Validation of a Membrane Humidifier for PEM Fuel Cell Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schumann, PeterUNSPECIFIEDUNSPECIFIED
Krauss, MartinUNSPECIFIEDUNSPECIFIED
Göbel, WinfriedUNSPECIFIEDUNSPECIFIED
Kallo, JosefUNSPECIFIEDUNSPECIFIED
Friedrich, K. AndreasUNSPECIFIEDUNSPECIFIED
Date:11 March 2008
Journal or Publication Title:5th Symposium on Fuel Cell Modelling and Experimental Validation
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 19
Editors:
EditorsEmail
Institute for Computational Physics of the Zurich University of , UNSPECIFIED
Series Name:Book of Abstracts
Status:Published
Keywords:Humidifier, PEM, Modelling, Simulation
Event Title:5th Symposium on Fuel Cell Modelling and Experimental Validation
Event Location:Winterthur (Switzerland)
Event Type:international Conference
Event Dates:2008-03-11 - 2008-03-12
Organizer:Institute for Computational Physics of the Zurich University of Applied Science
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Applikationsentwicklung (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Schumann, Peter
Deposited On:06 May 2008
Last Modified:12 Dec 2013 20:30

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