Simulation-Assisted Determination of the Start-Up Time of a Polymer Electrolyte Fuel Cell

Merit Bodner, Željko Penga, Walter Ladreiter, Mathias Heidinger, Viktor Hacker

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

Fuel starvation is a major cause of anode corrosion in low temperature polymer electrolyte fuel cells. The fuel cell start-up is a critical step, as hydrogen may not yet be evenly distributed in the active area, leading to local starvation. The present work investigates the hydrogen distribution and risk for starvation during start-up and after nitrogen purge by extending an existing computa-tional fluid dynamic model to capture transient behavior. The results of the numerical model are compared with detailed experimental analysis on a 25 cm2 triple serpentine flow field with good agreement in all aspects and a required time step size of 1 s. This is two to three orders of magnitude larger than the time steps used by other works, resulting in reasonably quick calculation times (e.g., 3 min calculation time for 1 s of experimental testing time using a 2 million element mesh).
Originalspracheenglisch
Aufsatznummer7929
Seitenumfang21
FachzeitschriftEnergies
Jahrgang14
Ausgabenummer23
Frühes Online-Datum26 Nov 2021
DOIs
PublikationsstatusVeröffentlicht - 1 Dez 2021

ASJC Scopus subject areas

  • Steuerung und Optimierung
  • Energie (sonstige)
  • Energieanlagenbau und Kraftwerkstechnik
  • Elektrotechnik und Elektronik
  • Feuerungstechnik
  • Erneuerbare Energien, Nachhaltigkeit und Umwelt

Fields of Expertise

  • Mobility & Production

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