Modeling of a Membrane Based Humidifier for Fuel Cell Applications Subject to End-Of-Life Conditions

Mads Pagh Nielsen, Anders Christian Olesen, Alan Menard

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Abstrakt

Proton Exchange Membrane (PEM) Fuel Cell Stacks efficiently convert the chemical energy in hydrogen to electricity through electrochemical reactions occurring on either side of a proton conducting electrolyte. This is a promising and very robust energy conversion process which can be used in many applications. For instance for automotive applications and various backup power systems substituting batteries. Humidification of the inlet air of PEM fuel cell stacks is essential to obtain optimum proton conductivity. Operational humidities of the anode and cathode streams having dew points close to the fuel cell operating temperature are required. These conditions must be met at the Beginning-Of-Life (BOL) as well as at the End-Of-Life (EOL) of the fuel cell system. This paper presents results of a numerical 1D model of the heat- and mass transport phenomena in a membrane humidifier with a Nafion-based water permeable membrane. Results are presented at nominal BOL-conditions and extreme EOL-conditions. A detailed sub-model incorporating the water absorption/desorption kinetics of Nafion and a novel and accurate representation of the diffusion coefficient of water in Nafion was implemented. The modeling explains why Nafion fails as a water permeable membrane at typical EOL-conditions.
OriginalsprogEngelsk
TitelProceedings of the 55th International Conference on Simulation and Modelling (SIMS 2014)
Antal sider10
ForlagLinköping University Electronic Press
Publikationsdato9 dec. 2014
Udgave108
ISBN (Elektronisk)978-91-7519-376-2
StatusUdgivet - 9 dec. 2014
Begivenhed55th International Conference on Simulation and Modelling (SIMS 2014) - Aalborg, Danmark
Varighed: 21 okt. 201422 okt. 2014

Konference

Konference55th International Conference on Simulation and Modelling (SIMS 2014)
LandDanmark
ByAalborg
Periode21/10/201422/10/2014
NavnLinköping Electronic Conference Proceedings
Nummer108
ISSN1650-3686

Fingeraftryk Dyk ned i forskningsemnerne om 'Modeling of a Membrane Based Humidifier for Fuel Cell Applications Subject to End-Of-Life Conditions'. Sammen danner de et unikt fingeraftryk.

  • Citationsformater

    Nielsen, M. P., Olesen, A. C., & Menard, A. (2014). Modeling of a Membrane Based Humidifier for Fuel Cell Applications Subject to End-Of-Life Conditions. I Proceedings of the 55th International Conference on Simulation and Modelling (SIMS 2014) (108 udg.). Linköping University Electronic Press. Linköping Electronic Conference Proceedings, Nr. 108 http://www.ep.liu.se/ecp_article/index.en.aspx?issue=108;article=008