A novel approach to model the transient behavior of solid-oxide fuel cell stacks

Menon, V and Janardhanan, V and Tischer, S and Deutschmann, O (2012) A novel approach to model the transient behavior of solid-oxide fuel cell stacks. Journal of Power Sources, 214. pp. 227-238. ISSN 0378-7753

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Abstract

This paper presents a novel approach to model the transient behavior of solid-oxide fuel cell (SOFC) stacks in two and three dimensions. A hierarchical model is developed by decoupling the temperature of the solid phase from the fluid phase. The solution of the temperature field is considered as an elliptic problem, while each channel within the stack is modeled as a marching problem. This paper presents the numerical model and cluster algorithm for coupling between the solid phase and fluid phase. For demonstration purposes, results are presented for a stack operated on pre-reformed hydrocarbon fuel. Transient response to load changes is studied by introducing step changes in cell potential and current. Furthermore, the effect of boundary conditions and stack materials on response time and internal temperature distribution is investigated

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IITH Creators:

IITH Creators	ORCiD
Janardhanan, V	http://orcid.org/0000-0002-3458-4169

Item Type:

Article

Additional Information:

We deeply appreciate many fruitful discussions with R.J. Kee and H. Zhu, both at Colorado School of Mines, on SOFC modeling. Financial support by the Helmholtz Research School “Energy-Related Catalysis” is gratefully acknowledged.

Uncontrolled Keywords:

Internal reforming; Solid-oxide fuel cell stack; Transient three-dimensional modeling

Subjects:

Chemical Engineering > Biochemical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

Team Library

Date Deposited:

11 Nov 2014 04:12

Last Modified:

04 Dec 2017 04:50