A single-phase, non-isothermal model for PEM fuel cells

Hyunchul Ju, Hua Meng, Chao-yang Wang

Research output: Contribution to journalArticle

286 Citations (Scopus)

Abstract

A proton exchange membrane (PEM) fuel cell produces a similar amount of waste heat to its electric power output, and tolerates a small temperature deviation from its design point for best performance and durability. These stringent thermal requirements present a significant heat transfer problem. In this work, a three-dimensional, non-isothermal model is developed to account rigorously for various heat generation mechanisms, including irreversible heat due to electrochemical reactions, entropic heat, and Joule heating arising from the electrolyte ionic resistance. The thermal model is further coupled with the electrochemical and mass transport models, thus permitting a comprehensive study of thermal and water management in PEM fuel cells. Numerical simulations reveal that the thermal effect on PEM fuel cells becomes more critical at higher current density and/or lower gas diffusion layer thermal conductivity. This three-dimensional model for single cells forms a theoretical foundation for thermal analysis of multi-cell stacks where thermal management and stack cooling is a significant engineering challenge.

Original languageEnglish (US)
Pages (from-to)1303-1315
Number of pages13
JournalInternational Journal of Heat and Mass Transfer
Volume48
Issue number7
DOIs
StatePublished - Mar 1 2005

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Proton exchange membrane fuel cells (PEMFC)
fuel cells
membranes
protons
water management
waste heat
heat
gaseous diffusion
heat generation
Joule heating
three dimensional models
electric power
cells
durability
temperature effects
high current
Diffusion in gases
Waste heat
Heat generation
Water management

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "A proton exchange membrane (PEM) fuel cell produces a similar amount of waste heat to its electric power output, and tolerates a small temperature deviation from its design point for best performance and durability. These stringent thermal requirements present a significant heat transfer problem. In this work, a three-dimensional, non-isothermal model is developed to account rigorously for various heat generation mechanisms, including irreversible heat due to electrochemical reactions, entropic heat, and Joule heating arising from the electrolyte ionic resistance. The thermal model is further coupled with the electrochemical and mass transport models, thus permitting a comprehensive study of thermal and water management in PEM fuel cells. Numerical simulations reveal that the thermal effect on PEM fuel cells becomes more critical at higher current density and/or lower gas diffusion layer thermal conductivity. This three-dimensional model for single cells forms a theoretical foundation for thermal analysis of multi-cell stacks where thermal management and stack cooling is a significant engineering challenge.",
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A single-phase, non-isothermal model for PEM fuel cells. / Ju, Hyunchul; Meng, Hua; Wang, Chao-yang.

In: International Journal of Heat and Mass Transfer, Vol. 48, No. 7, 01.03.2005, p. 1303-1315.

Research output: Contribution to journalArticle

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