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Parameters and their impacts on the temperature distribution and thermal gradient of solid oxide fuel cell

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posted on 22.03.2019, 14:43 by Erdogan GukErdogan Guk, Vijay Venkatesan, Shumaila Babar, Lisa JacksonLisa Jackson, Jung-Sik Kim
The commercialisation potential of Solid Oxide Fuel Cell is hindered due to certain technical issues. One of these is the thermal gradient across the cell structure during its operational period that can deteriorate the system’s performance. In this study, a newly developed multipoint thermal sensor is deployed across the cathode to understand the impact of various factors including cell’s operating temperature, fuel flow rate and drawing current density on temperature distribution and its stability. Here we report that direct oxidation of hydrogen due to fuel crossover has been the most impactful contributor for the cell’s average temperature increment during both open circuit voltage and loading conditions, while electrochemical oxidation of hydrogen is the most impactful contributor for cell temperature gradient during loading. A relationship has been established between the temperature profile of the cell surface and the source of the temperature variation which allows identification of the responsible parameter.

Funding

The authors appreciate partialfinancial support from the EPSRC’sIndia-UK Collaborative Research Initiative in Fuel Cells project on“Modelling Accelerated Ageing and Degradation of Solid Oxide FuelCells”(EP/I037059/1), and also the EPSRC’s UK-Korea CollaborativeResearch Activity in Fuel Cells project on“Novel diagnostic tools andtechniques for monitoring and control of SOFC stacks”(EP/M02346X/1).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Applied Energy

Volume

241

Pages

164 - 173

Citation

GUK, E. ... et al., 2019.Parameters and their impacts on the temperature distribution and thermal gradient of solid oxide fuel cell. Applied Energy, 241, pp. 164-173.

Publisher

© The authors. Published by Elsevier

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

05/03/2019

Publication date

2019-03-11

Copyright date

2019

Notes

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

ISSN

0306-2619

Language

en