Powered by OpenAIRE graph
Found an issue? Give us feedback
addClaim

This Research product is the result of merged Research products in OpenAIRE.

You have already added 0 works in your ORCID record related to the merged Research product.

Thermal-Electrochemical Modeling of a Proton Exchange Membrane Fuel Cell

Authors: Jeng Jong Hwang;

Thermal-Electrochemical Modeling of a Proton Exchange Membrane Fuel Cell

Abstract

A thermal-electrochemical coupled model is presented to predict electrochemical and heat transfer behaviors in a proton exchange membrane (PEM) fuel cell. The Brinkman extension to Darcy flow describes the fluid flow characteristics in the porous electrodes. The Stefan-Maxwell correlations together with the Bruggemann modification illustrate the multispecies diffusion in the porous electrode. A two-equation approach is used to account for the local thermal nonequilibrium between the solid matrices and the fluids in the gas diffusion layers. In the catalyst layers, the heat dissipation due to irreversible-process heating is determined from the macroscopic electrochemical model. The present model is capable of simultaneously predicting the solid phase temperature and the fluid phase temperature inside the fuel cell, which enables a comprehensive understanding of the mechanisms responsible for thermal pathways. Most importantly, it has successfully assessed the possibility of hot spots within a PEM fuel cell. Increasing the interfacial heat-transfer coefficient between the solid phase and the fluid phase (hv) from 1.0 X 10 3 to 1.0 X 10 6 W/m 3 K has an advantage of alleviating the hot spot. Thermal effects on the active material degradation and hence fuel cell cycle life will be incorporated in the future work.

Related Organizations
  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    83
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
Powered by OpenAIRE graph
Found an issue? Give us feedback
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
83
Top 10%
Top 10%
Top 10%