Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature

This study examines the effective thermal conductivity of wood composite impregnated with phase change material (PCM) during the PCM phase change process. Incorporating PCMs into wood stabilizes its shape and boosts energy storage capacity, broadening its applications in buildings while reducing ene...

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Authors: Cabeza, Luisa F., Mani Kala, Saranprabhu, Ahmed, Waqar, Nazari, Meysam, Terziev, Nasko, Bischof, Sabrina, Gritsch, Sebastian, Borri, Emiliano, Zsembinszki, Gabriel
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Universitat de Lleida (UdL)
Repository:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/468853
Online Access:https://doi.org/10.1016/j.est.2025.118788
https://hdl.handle.net/10459.1/468853
Access Level:Open access
Keyword:Effective thermal conductivity
Experimental study
Phase change material
Thermal energy storage
Wood
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spelling Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperatureCabeza, Luisa F.Mani Kala, SaranprabhuAhmed, WaqarNazari, MeysamTerziev, NaskoBischof, SabrinaGritsch, SebastianBorri, EmilianoZsembinszki, GabrielEffective thermal conductivityExperimental studyPhase change materialThermal energy storageWoodThis study examines the effective thermal conductivity of wood composite impregnated with phase change material (PCM) during the PCM phase change process. Incorporating PCMs into wood stabilizes its shape and boosts energy storage capacity, broadening its applications in buildings while reducing energy usage. Most previous studies on PCM focused solely on acquiring the thermal conductivity in their solid state, leaving a gap in research concerning their liquid state. In this study, a PCM-impregnated wood composite was developed with bio-based binders. The effective thermal conductivity was analysed across a temperature spectrum in which the impregnated PCM, ethyl palmitate, exists in three distinct phases: solid, liquid, and mushy (a mix of solid and liquid phases). The results indicate a notable variation in effective thermal conductivity during the phase change process. At 10 °C, the solid PCM has an effective thermal conductivity of 0.13 W/m·K, while at 40 °C, its liquid state maintains the same value. However, a significant 48 % increase in effective thermal conductivity was observed during the phase change temperature measured using a hot disk instrument. These findings are expected to provide valuable insights for both researchers and industrial sectors that use PCMs for TES.This project was co-funded by the European Union's Horizon Europe Research and Innovation Programme under grant agreement 101135629 (BIOBUILD). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or REA. Neither the European Union nor the granting authority can be held responsible for them. This paper is part of the RYC2023-044196-I, funded by MCIU/AEI/10.13039/501100011033 and FSE+. This work was partially funded by the Ministerio de Ciencia e Innovación - Agencia Estatal de Investigación (AEI) (PID2021- 123511OB-C31 - MCIN/AEI/10.13039/501100011033/FEDER, UE). This work was partially funded by Ministerio de Ciencia e Innovación - Agencia Estatal de Investigación (AEI) (RED2024-153629-T). This work is partially supported by ICREA under the ICREA Academia programme. The authors would like to thank the Departament de Recerca i Universitats of the Catalan Government for the quality accreditation given to their research group (2021 SGR 01615). GREiA is certified agent TECNIO in the category of technology developers from the Government of Catalonia.Elsevier2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1016/j.est.2025.118788https://hdl.handle.net/10459.1/468853reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123511OB-C31Reproducció del document publicat a https://doi.org/10.1016/j.est.2025.118788Journal of Energy Storage, 2025, vol. 138, 118788info:eu-repo/grantAgreement/EC/HE/101135629cc-by-nc (c) Luisa F. Cabeza et al., 2025Attribution-NonCommercial 4.0 Internationalinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/4.0/oai:repositori.udl.cat:10459.1/4688532026-06-24T12:42:17Z
dc.title.none.fl_str_mv Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
title Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
spellingShingle Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
Cabeza, Luisa F.
Effective thermal conductivity
Experimental study
Phase change material
Thermal energy storage
Wood
title_short Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
title_full Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
title_fullStr Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
title_full_unstemmed Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
title_sort Evaluating effective thermal conductivity of PCM-impregnated wood composite at phase change temperature
dc.creator.none.fl_str_mv Cabeza, Luisa F.
Mani Kala, Saranprabhu
Ahmed, Waqar
Nazari, Meysam
Terziev, Nasko
Bischof, Sabrina
Gritsch, Sebastian
Borri, Emiliano
Zsembinszki, Gabriel
author Cabeza, Luisa F.
author_facet Cabeza, Luisa F.
Mani Kala, Saranprabhu
Ahmed, Waqar
Nazari, Meysam
Terziev, Nasko
Bischof, Sabrina
Gritsch, Sebastian
Borri, Emiliano
Zsembinszki, Gabriel
author_role author
author2 Mani Kala, Saranprabhu
Ahmed, Waqar
Nazari, Meysam
Terziev, Nasko
Bischof, Sabrina
Gritsch, Sebastian
Borri, Emiliano
Zsembinszki, Gabriel
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Effective thermal conductivity
Experimental study
Phase change material
Thermal energy storage
Wood
topic Effective thermal conductivity
Experimental study
Phase change material
Thermal energy storage
Wood
description This study examines the effective thermal conductivity of wood composite impregnated with phase change material (PCM) during the PCM phase change process. Incorporating PCMs into wood stabilizes its shape and boosts energy storage capacity, broadening its applications in buildings while reducing energy usage. Most previous studies on PCM focused solely on acquiring the thermal conductivity in their solid state, leaving a gap in research concerning their liquid state. In this study, a PCM-impregnated wood composite was developed with bio-based binders. The effective thermal conductivity was analysed across a temperature spectrum in which the impregnated PCM, ethyl palmitate, exists in three distinct phases: solid, liquid, and mushy (a mix of solid and liquid phases). The results indicate a notable variation in effective thermal conductivity during the phase change process. At 10 °C, the solid PCM has an effective thermal conductivity of 0.13 W/m·K, while at 40 °C, its liquid state maintains the same value. However, a significant 48 % increase in effective thermal conductivity was observed during the phase change temperature measured using a hot disk instrument. These findings are expected to provide valuable insights for both researchers and industrial sectors that use PCMs for TES.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.est.2025.118788
https://hdl.handle.net/10459.1/468853
url https://doi.org/10.1016/j.est.2025.118788
https://hdl.handle.net/10459.1/468853
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123511OB-C31
Reproducció del document publicat a https://doi.org/10.1016/j.est.2025.118788
Journal of Energy Storage, 2025, vol. 138, 118788
info:eu-repo/grantAgreement/EC/HE/101135629
dc.rights.none.fl_str_mv cc-by-nc (c) Luisa F. Cabeza et al., 2025
Attribution-NonCommercial 4.0 International
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/4.0/
rights_invalid_str_mv cc-by-nc (c) Luisa F. Cabeza et al., 2025
Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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