Experimental analysis of a 20 kWe PEM fuel cell system in dynamic conditions representative of automotive applications (Articolo in rivista)

Type
Label
  • Experimental analysis of a 20 kWe PEM fuel cell system in dynamic conditions representative of automotive applications (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.enconman.2008.04.001 (literal)
Alternative label
  • Corbo P., Migliardini F., Veneri O. (2008)
    Experimental analysis of a 20 kWe PEM fuel cell system in dynamic conditions representative of automotive applications
    in Energy conversion and management
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Corbo P., Migliardini F., Veneri O. (literal)
Pagina inizio
  • 2688 (literal)
Pagina fine
  • 2697 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 49 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto Motori, CNR, Napoli. (literal)
Titolo
  • Experimental analysis of a 20 kWe PEM fuel cell system in dynamic conditions representative of automotive applications (literal)
Abstract
  • The dynamic performance of a laboratory fuel cell system based on a 20 kW H2/air proton exchange membrane (PEM) stack was investigated on test cycles compatible with automotive applications, with particular reference to the effect of different air management strategies on cell voltage uniformity and fuel cell system efficiency. The air management strategies were varied by imposing different stoichiometric ratio values as function of stack current, and were studied on two test cycles characterized by current variation rates ranging from 2 to 50 A/s, with maximum stack current of 240 A. Stack temperature and reactant pressure during the tests were maintained below 330 K and 150 kPa, respectively. The best compromise between fuel cell system efficiency and dynamic response in terms of cell voltage regularity was obtained with an air management strategy characterized by stoichiometric ratio values slightly superior to those optimized for steady state conditions. This management strategy determined an efficiency decrease in steady state conditions of maximum 3% for the sub-system stack + compressor in the range 0–200 A. The individual cell voltage uniformity was continuously monitored by a statistical indicator (coefficient variation Cv), which was always lower than 3% also at 50 A/s, indicating a satisfactory dynamic stack operation. (literal)
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