Modeling, Parameter Identification, and Validation of Reactant and Water Dynamics for a Fuel Cell Stack

Authors

D. A. McKay, University of Michigan, Ann ArborFollow
W. T. Ott, University of Michigan, Ann Arbor
A. G. Stefanopoulou, University of Michigan, Ann Arbor

Document Type

Conference Proceeding

Publication Date

12-1-2005

Publication Title

American Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) DSC

Abstract

This paper describes a simple two-phase flow dynamic model that predicts the experimentally observed temporal behavior of a proton exchange membrane fuel cell stack and a methodology to experimentally identify tunable physical parameters. The model equations allow temporal calculation of the species concentrations across the gas diffusion layers, the vapor transport across the membrane, the degree of flooding in the electrodes, and then predict the resulting decay in cell voltage over time. A nonlinear optimization technique is used for the identification of two critical model parameters, namely the membrane water vapor diffusion coefficient and the thickness of the liquid water film covering the fuel cell active area. The calibrated model is validated for a 24 cell, 300 cm2 stack with a supply of pressure regulated pure hydrogen.

Volume

74 DSC

Issue

2 PART B

First Page

1177

Last Page

1186

DOI

10.1115/IMECE2005-81484

Rights

Copyright © 2005 by ASME.

Comments

Archived as published.

Recommended Citation

McKay, D. A.; Ott, W. T.; and Stefanopoulou, A. G., "Modeling, Parameter Identification, and Validation of Reactant and Water Dynamics for a Fuel Cell Stack" (2005). Engineering: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/egr_facpubs/124