Konferensartikel

Modeling Reaction and Diffusion Processes of Fuel Cells within Modelica

Kevin L. Davies
Georgia Institute of Technology, Woodruff School of Mechanical Engineering, Atlanta, Georgia USA

Comas L. Haynes
Georgia Institute of Technology, Woodruff School of Mechanical Engineering, Atlanta, Georgia USA

Christiaan J. J. Paredis
Georgia Institute of Technology, Woodruff School of Mechanical Engineering, Atlanta, Georgia USA

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp09430106

Ingår i: Proceedings of the 7th International Modelica Conference; Como; Italy; 20-22 September 2009

Linköping Electronic Conference Proceedings 43:8, s. 66-76

Visa mer +

Publicerad: 2009-12-29

ISBN: 978-91-7393-513-5

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

The field of fuel cell (FC) technology offers a challenging and rewarding application for the Modelica language because it is highly multi-disciplinary and it entails physical phenomena (e.g.; catalysis) that are not fully understood. Modelica is a valuable platform from which to explore FCs because it is appropriate for the representation of physical interactions. This paper describes elements of a FC library which has been developed in Modelica. The goal of the modeling effort is to take full advantage of the physically representative nature of the Modelica language. To this end; it is important for the models to be consistent and explicit in terms of energy and species balances. The paper emphasizes the representation of diffusion and electrochemical processes. In these areas; the traditional approach is to represent empirically observed behavior; and this is not necessarily rigorous from the standpoint of energy and species balances. To describe the diffusion and electrochemical processes in a form that is suitable for Modelica; alternative and possibly more physically fundamental model equations have been developed.

Nyckelord

Media; streams; diffusion; fuel cell

Referenser

[1] D. M. Bernardi and M. W. Verbrugge. A mathematical model of the solid-polymer-electrolyte fuel cell. Journal of The Electrochemical Society; 139(9):2477–91; 1992. doi: 10.1149/1.2221251

[2] J. O. M. Bockris; A. K. N. Reddy; and M. Gamboa-Aldeco. Modern Electrochemistry 2A: Fundamentals of Electrodics. Kluwer Academic/Plenum Publishers; New York; 2nd edition; 2000.

[3] B. McBride; M. Zehe; and S. Gordon. NASA Glenn coefficients for calculating thermodynamic properties of individual species. NASA report TP-2002-211556; 2002.

[4] Modelica Association. Modelica: A unified object-oriented language for physical systems modeling; February 2 2005.

[5] Modelica Association. Modelica Fluid Library; August 2006. v1.0 Beta 1.

[6] Modelica Association. Modelica Standard Library; March 2006. v2.2.1.

[7] M. J. Moran and H. N. Shapiro. Fundamentals of Engineering Thermodynamics. John Wiley & Sons; Inc.; Hoboken; NJ; 5th edition; 2004.

[8] Private communication from T. E. Springer; LANL. Fortran code of Springer 1991 polymer electrolyte fuel cell model; 2007.

[9] T. E. Springer; M. S. Wilson; and S. Gottesfeld. Modeling and experimental diagnostics in polymer electrolyte fuel cells. Journal of The Electrochemical Society; 140(12):3513–3526; 1993. doi: 10.1149/1.2221120

[10] T. E. Springer; T. A. Zawodzinski; and S. Gottesfeld. Polymer electrolyte fuel cell model. Journal of The Electrochemical Society; 138(8):2334–2342; 1991. doi: 10.1149/1.2085971

[11] J. X. Wang; T. E. Springer; P. Liu; M. Shao; and R. R. Adzic. Hydrogen oxidation reaction on Pt in acidic media: Adsorption isotherm and activation free energies. Journal of Physical Chemistry C; 111(33):12425–12433; 2007. doi: 10.1021/jp073400i

[12] A. Z. Weber and J. Newman. Modeling transport in polymer-electrolyte fuel cells. Chemical Reviews; 10(10):4679-4726; 2004. doi: 10.1021/cr020729l

[13] A. Z. Weber and J. Newman. Transport in polymer-electrolyte membranes III: Model validation in a simple fuel-cell model. Journal of The Electrochemical Society; 151(2):326–339; 2004. doi: 10.1149/1.1639158

[14] A. Z. Weber and J. Newman. Modeling gasphase flow in porous media. International Communications in Heat and Mass Transfer; 32(7):855 – 860; 2005. doi: 10.1016/j.icheatmasstransfer.2004.08.026

[15] Wikipedia. Darcy’s law; November 2008.

[16] Wikipedia. Maxwell-Stefan-diffusion; November 2008.

[17] Wikipedia. Fick’s law of diffusion; April 2009.

[18] Z. Zhan; J. Xiao; Y. Zhang; M. Pan; and R. Yuan. Gas diffusion through differently structured gas diffusion layers of PEM fuel cells. International Journal of Hydrogen Energy; 32(17):4443–4451; 2007. doi: 10.1016/j.ijhydene.2007.03.041

Citeringar i Crossref