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Influencia de la orientación en el campo gravitatorio y placas bipolares en la fenomenología oscilatoria bajo condiciones de deshidratación en el cátodo en PEFC

Garcia Sanchez, Daniel and Friedrich, K. Andreas and Ortiz, Alfredo (2012) Influencia de la orientación en el campo gravitatorio y placas bipolares en la fenomenología oscilatoria bajo condiciones de deshidratación en el cátodo en PEFC. V National Congress of Fuel Cells CONAPPICE 2012, Madrid, Spain.

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Abstract

Oscillatory fluctuations of a single proton exchange membrane fuel cell appear upon operation with a dry cathode air supply and a fully humidified anode stream. Periodic transitions between a low and a high current operation point of the oscillating state were observed [1] where the oscillation amplitude is the principal parameter which characterizes the change of membrane water content. The oscillations are caused by periodic flow type changes from one to two phase flow in the anodic channels of the flow field. It has been observed that cell orientation with respect to earth’s gravity field influences the liquid water distribution in the anodic flow channels and thus it is also affecting the oscillatory behavior of the cell performance. Comparing cell performance oscillations with a five channel serpentine flow field to a cell with one channel serpentine it is found that the oscillating performance behavior is also influenced by the gas velocity within an anodic flow channel

Item URL in elib:https://elib.dlr.de/79292/
Document Type:Conference or Workshop Item (Poster)
Title:Influencia de la orientación en el campo gravitatorio y placas bipolares en la fenomenología oscilatoria bajo condiciones de deshidratación en el cátodo en PEFC
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Garcia Sanchez, DanielDaniel.GarciaSanchez (at) dlr.deUNSPECIFIED
Friedrich, K. AndreasDLRUNSPECIFIED
Ortiz, AlfredoDpto. Ingeniería Química y QI. ETSII y T, Universidad de CantabriaUNSPECIFIED
Date:2012
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Polymer electrolyte, Fuel cell, Water management, Oscillations.
Event Title:V National Congress of Fuel Cells CONAPPICE 2012
Event Location:Madrid, Spain
Event Type:international Conference
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Garcia Sanchez, Dr Daniel
Deposited On:05 Dec 2012 14:04
Last Modified:31 Jul 2019 19:38

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