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Publication type: Article in scientific journal
Type of review: Open peer review
Title: Simulation of mass and heat transfer in an evaporatively cooled PEM fuel cell
Authors: Herrendörfer, Robert
Cochet, Magali
Schumacher, Jürgen
et. al: No
DOI: 10.3390/en15082734
Published in: Energies
Volume(Issue): 15
Issue: 8
Page(s): 2734
Issue Date: 8-Apr-2022
Publisher / Ed. Institution: MDPI
ISSN: 1996-1073
Language: English
Subjects: Proton exchange membrane fuel cell; Modeling; Gas diffusion layer; Wettability; Evaporation; Water management; Heat management
Subject (DDC): 621.04: Energy engineering
Abstract: Evaporative cooling is a promising concept to improve proton exchange membrane fuel cells. While the particular concept based on gas diffusion layers (GDLs) modified with hydrophilic lines (HPILs) has recently been demonstrated, there is a lack in the understanding of the mass and heat transport processes. We have developed a 3-D, non-isothermal, macro-homogeneous numerical model focusing on one interface between a HPIL and an anode gas flow channel (AGFC). In the base case model, water evaporates within a thin film adjacent to the interfaces of the HPIL with the AGFC and with the hydrophobic anode GDL. The largest part of the generated water vapor leaves the cell via the AGFC. The transport to the cathode side is shown to be partly limited by the ab-/desorption into/from the membrane. The cooling due to the latent heat has a strong effect on the local evaporation rate. An increase of the mass transfer coefficient for evaporation leads to a transport limited regime inside the MEA while the transport via the AGFC is limited by evaporation kinetics.
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Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Published as part of the ZHAW project: SCCER-Mobility
Appears in collections:Publikationen School of Engineering

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