Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions

The supply intermittency of energy sources like solar energy or industrial waste heat should be properly addressed when studying latent heat thermal energy storage (TES) systems, since it might cause an incomplete melting/solidification of phase change materials (PCM). In the present paper, and expe...

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Autores: Gasia, Jaume, Gracia Cuesta, Alvaro de, Zsembinszki, Gabriel, Cabeza, Luisa F.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/65210
Acceso en línea:https://doi.org/10.1016/j.apenergy.2018.11.041
http://hdl.handle.net/10459.1/65210
Access Level:acceso abierto
Palabra clave:Thermal energy storage
Phase change material
Partial loads
Incomplete melting
Storage period
Stand-by period
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spelling Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditionsGasia, JaumeGracia Cuesta, Alvaro deZsembinszki, GabrielCabeza, Luisa F.Thermal energy storagePhase change materialPartial loadsIncomplete meltingStorage periodStand-by periodThe supply intermittency of energy sources like solar energy or industrial waste heat should be properly addressed when studying latent heat thermal energy storage (TES) systems, since it might cause an incomplete melting/solidification of phase change materials (PCM). In the present paper, and experimental study was performed to analyse the storage period (also known as stand-by period) in a latent heat TES system working under partial load operating conditions and the effect of its duration on the subsequent discharging process. In the experimental set-up, 99.5 kg of high density polyethylene (HDPE) was used as PCM in a 0.154m3 storage tank based on the shell-and-tube heat exchanger concept. Four different percentages of charge were evaluated: 58%, 73%, 83% (partial charge), and 97% (full charge). Each charging level was followed by three different periods of storage: 25 min, 60 min, and 120 min. The fact of working at different levels of charge caused that in some regions of the TES system the PCM was not completely melted. Thus, at the end of the charging process different levels of thermal homogenisation were observed. However, during the storage period, the PCM temperature showed a tendency to homogenisation, which was influenced by the energy distribution within the PCM, the heat losses, and the duration of the storage period. Focusing on the discharging period, it was observed that the duration of the storage period slightly affected the temperature and heat transfer profiles, causing the main differences of performance during the first 30 min of process.This work was partially funded by the Ministerio de Economía y Competitividad de España (ENE2015-64117-C5-1-R (MINECO/FEDER) and ENE2015-64117-C5-3-R (MINECO/FEDER)). The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2017 SGR 1537). GREA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. Jaume Gasia would like to thank the Departament d'Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya for his research fellowship (2018 FI_B2 00100).Elsevier2018202020192018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.apenergy.2018.11.041http://hdl.handle.net/10459.1/65210http://hdl.handle.net/10459.1/65210reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/grantAgreement/MINECO//ENE2015-64117-C5-1-Rinfo:eu-repo/grantAgreement/MINECO//ENE2015-64117-C5-3-RVersió postprint del document publicat a: https://doi.org/10.1016/j.apenergy.2018.11.041Applied Energy, 2019, vol. 235, p. 1389-1399cc-by-nc-nd, (c) Elsevier, 2018info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:recercat.cat:10459.1/652102026-05-29T05:05:01Z
dc.title.none.fl_str_mv Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
title Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
spellingShingle Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
Gasia, Jaume
Thermal energy storage
Phase change material
Partial loads
Incomplete melting
Storage period
Stand-by period
title_short Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
title_full Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
title_fullStr Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
title_full_unstemmed Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
title_sort Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
dc.creator.none.fl_str_mv Gasia, Jaume
Gracia Cuesta, Alvaro de
Zsembinszki, Gabriel
Cabeza, Luisa F.
author Gasia, Jaume
author_facet Gasia, Jaume
Gracia Cuesta, Alvaro de
Zsembinszki, Gabriel
Cabeza, Luisa F.
author_role author
author2 Gracia Cuesta, Alvaro de
Zsembinszki, Gabriel
Cabeza, Luisa F.
author2_role author
author
author
dc.subject.none.fl_str_mv Thermal energy storage
Phase change material
Partial loads
Incomplete melting
Storage period
Stand-by period
topic Thermal energy storage
Phase change material
Partial loads
Incomplete melting
Storage period
Stand-by period
description The supply intermittency of energy sources like solar energy or industrial waste heat should be properly addressed when studying latent heat thermal energy storage (TES) systems, since it might cause an incomplete melting/solidification of phase change materials (PCM). In the present paper, and experimental study was performed to analyse the storage period (also known as stand-by period) in a latent heat TES system working under partial load operating conditions and the effect of its duration on the subsequent discharging process. In the experimental set-up, 99.5 kg of high density polyethylene (HDPE) was used as PCM in a 0.154m3 storage tank based on the shell-and-tube heat exchanger concept. Four different percentages of charge were evaluated: 58%, 73%, 83% (partial charge), and 97% (full charge). Each charging level was followed by three different periods of storage: 25 min, 60 min, and 120 min. The fact of working at different levels of charge caused that in some regions of the TES system the PCM was not completely melted. Thus, at the end of the charging process different levels of thermal homogenisation were observed. However, during the storage period, the PCM temperature showed a tendency to homogenisation, which was influenced by the energy distribution within the PCM, the heat losses, and the duration of the storage period. Focusing on the discharging period, it was observed that the duration of the storage period slightly affected the temperature and heat transfer profiles, causing the main differences of performance during the first 30 min of process.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2019
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.apenergy.2018.11.041
http://hdl.handle.net/10459.1/65210
http://hdl.handle.net/10459.1/65210
url https://doi.org/10.1016/j.apenergy.2018.11.041
http://hdl.handle.net/10459.1/65210
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO//ENE2015-64117-C5-1-R
info:eu-repo/grantAgreement/MINECO//ENE2015-64117-C5-3-R
Versió postprint del document publicat a: https://doi.org/10.1016/j.apenergy.2018.11.041
Applied Energy, 2019, vol. 235, p. 1389-1399
dc.rights.none.fl_str_mv cc-by-nc-nd, (c) Elsevier, 2018
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd, (c) Elsevier, 2018
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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