Evaluation of an iron-chlorine thermochemical cycle for hydrogen production

Autores
Canavesio, Cristian Alberto; Nassini, Horacio E.; Bohe, Ana Ester
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper, a theoretical and experimental study on an iron-chlorine thermochemical cycle for hydrogen production is presented. The study was addressed to confirm the occurrence of the thermochemical reactions originally proposed and to investigate the influence of kinetic parameters for improving the overall performance of this cycle. Firstly, a thermodynamic analysis was done for determining whether this cycle is attractive for hydrogen production at reaction temperatures below 1223 K, in terms of both energy efficiency and yield of hydrogen. Following, proof-of-concept experiments using a batch reactor were performed at different reaction temperatures, pressures and holding times. Experimental results showed that the reaction temperature is expected to have a small effect for increasing the hydrogen production, while an increase of the system pressure was observed to raise markedly the conversion degree achieved. Based on experimental results, it was possible to confirm the reaction pathway of thermochemical reactions originally proposed, to identify the rate determining step of the overall process, and to explain the beneficial effect of increasing the system pressure on the hydrogen yield. Finally, a modified cycle is proposed for increasing its overall energy efficiency, by lowering the reaction temperature of two thermochemical reactions from 1198 K to 923 K in order to avoid the phase change of FeCl2 that melts at 950 K. Comparative calculations of enthalpy balance and external heat and work requirements for the original and modified cycles showed that the limiting energy efficiency could be theoretically increased from the range 24–28% to 32–37% and this significant increment appears to be promising for further investigations.
Fil: Canavesio, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Nassini, Horacio E.. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Materia
Hydrogen
Thermochemical Reactions
Iron-Chlorine Cycle
Energy Efficiency
Kinetics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/46247
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/46247
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evaluation of an iron-chlorine thermochemical cycle for hydrogen productionCanavesio, Cristian AlbertoNassini, Horacio E.Bohe, Ana EsterHydrogenThermochemical ReactionsIron-Chlorine CycleEnergy EfficiencyKineticshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this paper, a theoretical and experimental study on an iron-chlorine thermochemical cycle for hydrogen production is presented. The study was addressed to confirm the occurrence of the thermochemical reactions originally proposed and to investigate the influence of kinetic parameters for improving the overall performance of this cycle. Firstly, a thermodynamic analysis was done for determining whether this cycle is attractive for hydrogen production at reaction temperatures below 1223 K, in terms of both energy efficiency and yield of hydrogen. Following, proof-of-concept experiments using a batch reactor were performed at different reaction temperatures, pressures and holding times. Experimental results showed that the reaction temperature is expected to have a small effect for increasing the hydrogen production, while an increase of the system pressure was observed to raise markedly the conversion degree achieved. Based on experimental results, it was possible to confirm the reaction pathway of thermochemical reactions originally proposed, to identify the rate determining step of the overall process, and to explain the beneficial effect of increasing the system pressure on the hydrogen yield. Finally, a modified cycle is proposed for increasing its overall energy efficiency, by lowering the reaction temperature of two thermochemical reactions from 1198 K to 923 K in order to avoid the phase change of FeCl2 that melts at 950 K. Comparative calculations of enthalpy balance and external heat and work requirements for the original and modified cycles showed that the limiting energy efficiency could be theoretically increased from the range 24–28% to 32–37% and this significant increment appears to be promising for further investigations.Fil: Canavesio, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; ArgentinaFil: Nassini, Horacio E.. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; ArgentinaFil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; ArgentinaPergamon-Elsevier Science Ltd2015-07-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/46247Canavesio, Cristian Alberto; Nassini, Horacio E.; Bohe, Ana Ester; Evaluation of an iron-chlorine thermochemical cycle for hydrogen production; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 40; 28; 30-7-2015; 8620-86320360-3199CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0360319915011209info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2015.04.158info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:25Zoai:ri.conicet.gov.ar:11336/46247instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:25.369CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
title Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
spellingShingle Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
Canavesio, Cristian Alberto
Hydrogen
Thermochemical Reactions
Iron-Chlorine Cycle
Energy Efficiency
Kinetics
title_short Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
title_full Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
title_fullStr Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
title_full_unstemmed Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
title_sort Evaluation of an iron-chlorine thermochemical cycle for hydrogen production
dc.creator.none.fl_str_mv Canavesio, Cristian Alberto
Nassini, Horacio E.
Bohe, Ana Ester
author Canavesio, Cristian Alberto
author_facet Canavesio, Cristian Alberto
Nassini, Horacio E.
Bohe, Ana Ester
author_role author
author2 Nassini, Horacio E.
Bohe, Ana Ester
author2_role author
author
dc.subject.none.fl_str_mv Hydrogen
Thermochemical Reactions
Iron-Chlorine Cycle
Energy Efficiency
Kinetics
topic Hydrogen
Thermochemical Reactions
Iron-Chlorine Cycle
Energy Efficiency
Kinetics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this paper, a theoretical and experimental study on an iron-chlorine thermochemical cycle for hydrogen production is presented. The study was addressed to confirm the occurrence of the thermochemical reactions originally proposed and to investigate the influence of kinetic parameters for improving the overall performance of this cycle. Firstly, a thermodynamic analysis was done for determining whether this cycle is attractive for hydrogen production at reaction temperatures below 1223 K, in terms of both energy efficiency and yield of hydrogen. Following, proof-of-concept experiments using a batch reactor were performed at different reaction temperatures, pressures and holding times. Experimental results showed that the reaction temperature is expected to have a small effect for increasing the hydrogen production, while an increase of the system pressure was observed to raise markedly the conversion degree achieved. Based on experimental results, it was possible to confirm the reaction pathway of thermochemical reactions originally proposed, to identify the rate determining step of the overall process, and to explain the beneficial effect of increasing the system pressure on the hydrogen yield. Finally, a modified cycle is proposed for increasing its overall energy efficiency, by lowering the reaction temperature of two thermochemical reactions from 1198 K to 923 K in order to avoid the phase change of FeCl2 that melts at 950 K. Comparative calculations of enthalpy balance and external heat and work requirements for the original and modified cycles showed that the limiting energy efficiency could be theoretically increased from the range 24–28% to 32–37% and this significant increment appears to be promising for further investigations.
Fil: Canavesio, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Nassini, Horacio E.. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
description In this paper, a theoretical and experimental study on an iron-chlorine thermochemical cycle for hydrogen production is presented. The study was addressed to confirm the occurrence of the thermochemical reactions originally proposed and to investigate the influence of kinetic parameters for improving the overall performance of this cycle. Firstly, a thermodynamic analysis was done for determining whether this cycle is attractive for hydrogen production at reaction temperatures below 1223 K, in terms of both energy efficiency and yield of hydrogen. Following, proof-of-concept experiments using a batch reactor were performed at different reaction temperatures, pressures and holding times. Experimental results showed that the reaction temperature is expected to have a small effect for increasing the hydrogen production, while an increase of the system pressure was observed to raise markedly the conversion degree achieved. Based on experimental results, it was possible to confirm the reaction pathway of thermochemical reactions originally proposed, to identify the rate determining step of the overall process, and to explain the beneficial effect of increasing the system pressure on the hydrogen yield. Finally, a modified cycle is proposed for increasing its overall energy efficiency, by lowering the reaction temperature of two thermochemical reactions from 1198 K to 923 K in order to avoid the phase change of FeCl2 that melts at 950 K. Comparative calculations of enthalpy balance and external heat and work requirements for the original and modified cycles showed that the limiting energy efficiency could be theoretically increased from the range 24–28% to 32–37% and this significant increment appears to be promising for further investigations.
publishDate 2015
dc.date.none.fl_str_mv 2015-07-30
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/46247
Canavesio, Cristian Alberto; Nassini, Horacio E.; Bohe, Ana Ester; Evaluation of an iron-chlorine thermochemical cycle for hydrogen production; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 40; 28; 30-7-2015; 8620-8632
0360-3199
CONICET Digital
CONICET
url http://hdl.handle.net/11336/46247
identifier_str_mv Canavesio, Cristian Alberto; Nassini, Horacio E.; Bohe, Ana Ester; Evaluation of an iron-chlorine thermochemical cycle for hydrogen production; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 40; 28; 30-7-2015; 8620-8632
0360-3199
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0360319915011209
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2015.04.158
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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