TY - GEN
T1 - INTERNAL CATHODE TUBULAR SOLID OXIDE FUEL CELL OPERATING ON MODEL METHANE COMBUSTION EXHAUST
AU - Hartwell, Alexander R.
AU - Ahn, Jeongmin
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - The combustion of methane produces favorable conditions for power generation via solid oxide fuel cells (SOFCs). When SOFCs operate in the exhaust of a combustion reaction in a flame-assisted fuel cell (FFC) arrangement, electrical power and heat can be simultaneously produced. These combined heat and power (CHP) systems offer high efficiencies and resilience against external power supply disruptions. The geometric limitations of SOFCs, however, have previously complicated their integration into combustion chambers. Specifically, the desirable self-sealing tubular-SOFC (tSOFC) geometry which offers resilience against rapid thermal fluctuations, a necessity for operation within combustion chambers, requires the fuel to be fed to the inside of the tube when produced through traditional manufacturing procedures. This requirement significantly alters the combustion chamber operation. This issue has been eliminated through development of a novel extrusion-based internal cathode tSOFC (IC-tSOFC) which has oxidant fed internally allowing it to be directly placed into the fuel containing environment of a combustion chamber. At this point, the performance of these cells has only been investigated when utilizing hydrogen as a fuel. This work investigates IC-tSOFC operation with model methane combustion exhaust acting as the fuel supply. Variation of performance as a result of operation temperature as well as exhaust compositions are presented in addition to scanning electron microscope images of the cells before and after short-term durability testing. The results shown here provide motivation to continue work on integrating IC-tSOFCs into combustion systems to produce high efficiency CHP solutions.
AB - The combustion of methane produces favorable conditions for power generation via solid oxide fuel cells (SOFCs). When SOFCs operate in the exhaust of a combustion reaction in a flame-assisted fuel cell (FFC) arrangement, electrical power and heat can be simultaneously produced. These combined heat and power (CHP) systems offer high efficiencies and resilience against external power supply disruptions. The geometric limitations of SOFCs, however, have previously complicated their integration into combustion chambers. Specifically, the desirable self-sealing tubular-SOFC (tSOFC) geometry which offers resilience against rapid thermal fluctuations, a necessity for operation within combustion chambers, requires the fuel to be fed to the inside of the tube when produced through traditional manufacturing procedures. This requirement significantly alters the combustion chamber operation. This issue has been eliminated through development of a novel extrusion-based internal cathode tSOFC (IC-tSOFC) which has oxidant fed internally allowing it to be directly placed into the fuel containing environment of a combustion chamber. At this point, the performance of these cells has only been investigated when utilizing hydrogen as a fuel. This work investigates IC-tSOFC operation with model methane combustion exhaust acting as the fuel supply. Variation of performance as a result of operation temperature as well as exhaust compositions are presented in addition to scanning electron microscope images of the cells before and after short-term durability testing. The results shown here provide motivation to continue work on integrating IC-tSOFCs into combustion systems to produce high efficiency CHP solutions.
KW - Combined Heat
KW - Energy Conversion
KW - Fuel Cell Applications
KW - Power (CHP) System
KW - Power Cogeneration
KW - Solid Oxide Fuel Cells (SOFCs)
UR - http://www.scopus.com/inward/record.url?scp=85144257500&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85144257500&partnerID=8YFLogxK
U2 - 10.1115/POWER2022-84995
DO - 10.1115/POWER2022-84995
M3 - Conference contribution
AN - SCOPUS:85144257500
T3 - American Society of Mechanical Engineers, Power Division (Publication) POWER
BT - Proceedings of the ASME 2022 Power Conference, Power 2022
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2022 Power Conference, Power 2022
Y2 - 18 July 2022 through 19 July 2022
ER -