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Gas Recirculation at the Hydrogen Electrode of Solid Oxide Fuel Cell and SolidOxide Electrolysis Cell Systems

Henke, Moritz and Hillius, Silvan and Riedel, Marc and Kallo, Josef and Friedrich, K. Andreas (2016) Gas Recirculation at the Hydrogen Electrode of Solid Oxide Fuel Cell and SolidOxide Electrolysis Cell Systems. Fuel Cells, 16, pp. 584-590. Wiley. DOI: 10.1002/fuce.201500114 ISSN 1615-6846

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/fuce.201500114/abstract

Abstract

In this study it is theoretically analyzed how flue gas recirculation at the hydrogen electrode of solid oxide cells (SOC) systems effects fuel utilization and carbon formation. Interdepence between cell fuel utilization, system fuel utilization and gas recirculation is investigated numerically. Tendency towards carbon deposits is evaluated via thermodynamic equilibrium calculations. It is quantified which gas recirculation rates are necessary to achieve high values of system fuel utilization even if the cell fuel utilization is kept at a moderate level. Furthermore, tendency towards carbon deposition strongly depends on temperature, pressure and feed gas composition and can be reduced by adequate recirculation rates. The presented results can be used for the configuration of gas recirculation in SOC systems.

Item URL in elib:https://elib.dlr.de/109383/
Document Type:Article
Title:Gas Recirculation at the Hydrogen Electrode of Solid Oxide Fuel Cell and SolidOxide Electrolysis Cell Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Henke, Moritzmoritz.henke (at) dlr.deUNSPECIFIED
Hillius, SilvanUNSPECIFIEDUNSPECIFIED
Riedel, Marcmarc.riedel (at) dlr.deUNSPECIFIED
Kallo, Josefjosef.kallo (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:21 July 2016
Journal or Publication Title:Fuel Cells
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:16
DOI :10.1002/fuce.201500114
Page Range:pp. 584-590
Publisher:Wiley
ISSN:1615-6846
Status:Published
Keywords:Gas Recirculation, Gas Recycling, SOEC System, SOFC System
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Fuel cells
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Fuel Cells) (old), E - Electrochemical Processes (Electrolysis) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Henke, Moritz
Deposited On:15 Dec 2016 15:17
Last Modified:06 Sep 2019 15:15

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