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Author(s): Perez, L.C.
Taneli Rajala
Jari Ihonen
Pauli Koski
J. M. Sousa
Adélio Mendes
Title: Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen
Issue Date: 2013
Abstract: The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H-2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H-2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen. Copyright
Subject: Engenharia química
Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/EQU-EQU/104217/2008/Integração de células de combustível de electrólito de membrana polimérica com membranas de paládio de elevada eficiência/PTDC/EQU-EQU/104217/2008
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/CTM/108454/2008/Propostas inovadoras à permeabilidade do metanol e actividade do catalisador em células de combustível de electrólito de membrana com alimentação directa de metano/PTDC/CTM/108454/2008
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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