Multi-scale Modeling of Biogas Fueled SOFC

Janardhanan, V M (2015) Multi-scale Modeling of Biogas Fueled SOFC. ECS Transactions, 68 (1). pp. 3051-3058. ISSN 1938-5862

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Abstract

This paper presents a multi-physics model for simulating solid oxide fuel cells operating directly on biogas without the aid of an external reformer. The model accounts for multi-component species transport, electrochemical charge transfer and charge transport within the electrodes and electrolyte. The model uses only 3 adjustable parameters that are fitted against a base set of experimental data and then kept constant throughout the study. The model predicted voltage fluctuations due to composition fluctuation of biogas are in very good agreement with experimentally measured voltage fluctuations. The model reveals that the assumption of H2 as the only electrochemically active species is probably inadequate for explaining the behavior of cells operating directly on biogas. It is also found that the electrochemically active thickness is independent of fuel composition and the ionic current through electrolyte under fuel rich conditions.

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IITH Creators:
IITH CreatorsORCiD
Janardhanan, V Mhttp://orcid.org/0000-0002-3458-4169
Item Type: Article
Subjects: Chemical Engineering > Oils, fats, waxes, gases
Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 25 Aug 2015 10:26
Last Modified: 05 Jul 2017 10:45
URI: http://raiith.iith.ac.in/id/eprint/1888
Publisher URL: https://doi.org/10.1149/06801.3051ecst
OA policy: http://www.sherpa.ac.uk/romeo/issn/1938-5862/
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