Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems

The objective of this study is to investigate the challenges associated with burning these off-gases and to develop a simple yet efficient combustor to support solid oxide fuel cell/gas turbine hybrid power systems. As a result of operating of the fuel cell under conditions of high fuel utilization,...

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Autores principales:	Daniel Jaimes, Vincent McDonell, Scott Samuelsen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Off-gas burner Solid oxide fuel cell SOFC hybrid Computational fluid dynamics Chemical reactor network Staged combustion Renewable energy sources TJ807-830 Environmental engineering TA170-171
Acceso en línea:	https://doaj.org/article/d7b5de7a5ad744938d0991c0864688d4
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spelling	oai:doaj.org-article:d7b5de7a5ad744938d0991c0864688d42021-11-28T04:39:27ZNumerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems2666-790810.1016/j.clet.2021.100321https://doaj.org/article/d7b5de7a5ad744938d0991c0864688d42021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666790821002810https://doaj.org/toc/2666-7908The objective of this study is to investigate the challenges associated with burning these off-gases and to develop a simple yet efficient combustor to support solid oxide fuel cell/gas turbine hybrid power systems. As a result of operating of the fuel cell under conditions of high fuel utilization, a solid oxide fuel cell produces high temperature exhaust gases on the anode side that are of low heating value, and depleted air with low oxygen content on the cathode side. Anode off-gases characterized by heating values less than 2 MJ/m3 and cathode off-gases with as little as 9 vol % oxygen concentration present a challenge for achieving stable combustion. In this study, the focus is on the development of a dual-stage combustor for low-calorific solid oxide fuel cell off-gases at combustor inlet temperatures up to 1100 K. In addition to taking advantage of high temperature off-gases to support the stable combustion of these low heating value off-gases, the influence of elevated-pressure combustor operation (set by the solid oxide fuel cell operating pressure) is investigated. Initially, a chemical reactor network is developed and used to simulate mixing and flow characteristics of a typical gas turbine combustor operating on the aforementioned fuel/air mixtures at the elevated operating conditions. These results are then used to inform a dual-stage burner design in the form of a computational fluid dynamics model for simulations incorporating both flow and combustion dynamics. The final parameters that are used to evaluate the final design are criteria pollutant emissions such as carbon monoxide and oxides of nitrogen, as well as suitable temperature profiles across the burner.Daniel JaimesVincent McDonellScott SamuelsenElsevierarticleOff-gas burnerSolid oxide fuel cellSOFC hybridComputational fluid dynamicsChemical reactor networkStaged combustionRenewable energy sourcesTJ807-830Environmental engineeringTA170-171ENCleaner Engineering and Technology, Vol 5, Iss , Pp 100321- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Off-gas burner Solid oxide fuel cell SOFC hybrid Computational fluid dynamics Chemical reactor network Staged combustion Renewable energy sources TJ807-830 Environmental engineering TA170-171
spellingShingle	Off-gas burner Solid oxide fuel cell SOFC hybrid Computational fluid dynamics Chemical reactor network Staged combustion Renewable energy sources TJ807-830 Environmental engineering TA170-171 Daniel Jaimes Vincent McDonell Scott Samuelsen Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
description	The objective of this study is to investigate the challenges associated with burning these off-gases and to develop a simple yet efficient combustor to support solid oxide fuel cell/gas turbine hybrid power systems. As a result of operating of the fuel cell under conditions of high fuel utilization, a solid oxide fuel cell produces high temperature exhaust gases on the anode side that are of low heating value, and depleted air with low oxygen content on the cathode side. Anode off-gases characterized by heating values less than 2 MJ/m3 and cathode off-gases with as little as 9 vol % oxygen concentration present a challenge for achieving stable combustion. In this study, the focus is on the development of a dual-stage combustor for low-calorific solid oxide fuel cell off-gases at combustor inlet temperatures up to 1100 K. In addition to taking advantage of high temperature off-gases to support the stable combustion of these low heating value off-gases, the influence of elevated-pressure combustor operation (set by the solid oxide fuel cell operating pressure) is investigated. Initially, a chemical reactor network is developed and used to simulate mixing and flow characteristics of a typical gas turbine combustor operating on the aforementioned fuel/air mixtures at the elevated operating conditions. These results are then used to inform a dual-stage burner design in the form of a computational fluid dynamics model for simulations incorporating both flow and combustion dynamics. The final parameters that are used to evaluate the final design are criteria pollutant emissions such as carbon monoxide and oxides of nitrogen, as well as suitable temperature profiles across the burner.
format	article
author	Daniel Jaimes Vincent McDonell Scott Samuelsen
author_facet	Daniel Jaimes Vincent McDonell Scott Samuelsen
author_sort	Daniel Jaimes
title	Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
title_short	Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
title_full	Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
title_fullStr	Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
title_full_unstemmed	Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems
title_sort	numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (sofc/gt) hybrid systems
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d7b5de7a5ad744938d0991c0864688d4
work_keys_str_mv	AT danieljaimes numericalinvestigationofadualstageoffgasburnertosupporthighpressureandhightemperaturesolidoxidefuelcellgasturbinesofcgthybridsystems AT vincentmcdonell numericalinvestigationofadualstageoffgasburnertosupporthighpressureandhightemperaturesolidoxidefuelcellgasturbinesofcgthybridsystems AT scottsamuelsen numericalinvestigationofadualstageoffgasburnertosupporthighpressureandhightemperaturesolidoxidefuelcellgasturbinesofcgthybridsystems
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Numerical investigation of a dual-stage off-gas burner to support high pressure and high temperature solid oxide fuel cell/gas turbine (SOFC/GT) hybrid systems

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