Journal
CHEMICAL ENGINEERING RESEARCH & DESIGN
Volume 91, Issue 8, Pages 1508-1516Publisher
ELSEVIER
DOI: 10.1016/j.cherd.2013.05.008
Keywords
Proton-conducting SOFC; Direct internal reforming; Autothermal reforming; Theoretical analysis
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Funding
- Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang
- Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission [EN280A]
- Thailand Research Fund (TRF)
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This study presents a performance analysis of a proton-conducting SOFC (SOFC-H+) with internal reforming of methane. The autothermal reforming within the SOFC-H+ stack is considered to be a potential solution of the carbon formation problem facing in operation of internal steam reforming SOFC-H+. A one-dimensional, steady-state model of the SOFC-H+ coupled with a detailed electrochemical model is employed to investigate its performance in terms of power density and fuel cell efficiency. The simulation results show that when SOFC-H+ is operated under an autothermal reforming environment, the presence of carbon monoxide, which is a major cause of carbon formation, in the fuel cell stack decreases. Effect of key operating parameters, such as temperature, steam-to-carbon and oxygen-to-carbon feed ratios, current density and fuel utilization, on the SOFC-H+ performance in terms of electrical efficiencies and energy demand is also investigated. The results indicate that operating temperatures have strong influence on SOFC-H+ performance, carbon monoxide production and heat generation. (C) 2013 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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