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Pressurized SOFC for the integration in a hybrid power plant

Tomaszewski, Amrei and Willich, Caroline and Henke, Moritz and Klein, Miriam and Kallo, Josef and Friedrich, K. Andreas (2013) Pressurized SOFC for the integration in a hybrid power plant. FDFC 2013, 16.-18.04.2013, Karlsruhe.

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With the increasing demand for flexible power in Europe and especially in Germany, the need for distributed efficient power plants and renewable energy sources is growing further. Hybrid power plants consisting of a gas turbine coupled with pressurized solid oxide fuel cells (PSOFC) can help to meet this demand. They offer the opportunity to convert chemically bound energy into electrical energy with high electrical efficiencies within a large range of installed power. Due to their high operating temperature, they are suitable for combined heat and power applications. Furthermore, they can be operated with a variety of different gases. The German Aerospace Center (DLR) is going to build a demonstration hybrid power plant. The electrochemical behaviour of the pressurized SOFC was examined in a wide range of operating conditions during the preliminary phase. The hybrid power plant will be operated with natural gas as fuel therefore many investigations with pre-reformed methane as fuel have been carried out. Results showed that cell performance is strongly influenced by methane concentration. In this paper, this effect is analyzed in detail using electrochemical impedance spectroscopy (EIS). It is found that the influence of methane concentration on cell performance is mainly due to a change in temperature. High methane concentrations lead to high internal reforming rates and therefore a significant cooling of the stack. It was found that by controlling the temperature within the stack and keeping it constant for different fuels similar performance results can be obtained.

Item URL in elib:https://elib.dlr.de/82449/
Document Type:Conference or Workshop Item (Poster)
Title:Pressurized SOFC for the integration in a hybrid power plant
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Tomaszewski, Amreiamrei.tomaszewski (at) dlr.deUNSPECIFIED
Willich, Carolinecaroline.willich (at) dlr.deUNSPECIFIED
Henke, Moritzmoritz.henke (at) dlr.deUNSPECIFIED
Klein, Miriammiriam.klein (at) dlr.deUNSPECIFIED
Kallo, Josefjosef.kallo (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:16 April 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Solid oxide fuel cell, Reforming, Electrochemical Impedance Spectroscopy (EIS), hybrid power plant
Event Title:FDFC 2013
Event Location:Karlsruhe
Event Type:international Conference
Event Dates:16.-18.04.2013
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Henke, Moritz
Deposited On:22 May 2013 13:04
Last Modified:22 May 2013 13:04

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