Thermal storage of nitrate salts as Phase Change Materials (PCMs)

This study presents the energy storage potential of nitrate salts for specific applications in energy systems that use renewable resources. For this, the thermal, chemical, and morphological characterization of 11 samples of nitrate salts as phase change materials (PCM) was conducted. Specifically,...

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Autores: Orozco, Marco A., Acurio, Karen, Martínez Gómez, Javier|||0000-0001-8807-7595, Vásquez Aza, Francis, Chico Proano, Andrés
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/50619
Acceso en línea:http://hdl.handle.net/10017/50619
https://dx.doi.org/10.3390/ma14237223
Access Level:acceso abierto
Palabra clave:Inorganic PCMs
Thermal storage
Nitrate salt mixtures
Ciencia de los materiales
Materials science
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spelling Thermal storage of nitrate salts as Phase Change Materials (PCMs)Orozco, Marco A.Acurio, KarenMartínez Gómez, Javier|||0000-0001-8807-7595Vásquez Aza, FrancisChico Proano, AndrésInorganic PCMsThermal storageNitrate salt mixturesCiencia de los materialesMaterials scienceThis study presents the energy storage potential of nitrate salts for specific applications in energy systems that use renewable resources. For this, the thermal, chemical, and morphological characterization of 11 samples of nitrate salts as phase change materials (PCM) was conducted. Specifically, sodium nitrate (NaNO3), sodium nitrite (NaNO2), and potassium nitrate (KNO3) were considered as base materials; and various binary and ternary mixtures were evaluated. For the evaluation of the materials, differential Fourier transform infrared spectroscopy (FTIR), scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) to identify the temperature and enthalpy of phase change, thermal stability, microstructure, and the identification of functional groups were applied. Among the relevant results, sodium nitrite presented the highest phase change enthalpy of 220.7 J/g, and the mixture of 50% NaNO3 and 50% NaNO2 presented an enthalpy of 185.6 J/g with a phase change start and end temperature of 228.4 and 238.6 °C, respectively. This result indicates that sodium nitrite mixtures allow the thermal storage capacity of PCMs to increase. In conclusion, these materials are suitable for medium and high-temperature thermal energy storage systems due to their thermal and chemical stability, and high thermal storage capacity.MDPI20212021-11-26journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/50619https://dx.doi.org/10.3390/ma14237223reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/506192026-06-18T11:13:07Z
dc.title.none.fl_str_mv Thermal storage of nitrate salts as Phase Change Materials (PCMs)
title Thermal storage of nitrate salts as Phase Change Materials (PCMs)
spellingShingle Thermal storage of nitrate salts as Phase Change Materials (PCMs)
Orozco, Marco A.
Inorganic PCMs
Thermal storage
Nitrate salt mixtures
Ciencia de los materiales
Materials science
title_short Thermal storage of nitrate salts as Phase Change Materials (PCMs)
title_full Thermal storage of nitrate salts as Phase Change Materials (PCMs)
title_fullStr Thermal storage of nitrate salts as Phase Change Materials (PCMs)
title_full_unstemmed Thermal storage of nitrate salts as Phase Change Materials (PCMs)
title_sort Thermal storage of nitrate salts as Phase Change Materials (PCMs)
dc.creator.none.fl_str_mv Orozco, Marco A.
Acurio, Karen
Martínez Gómez, Javier|||0000-0001-8807-7595
Vásquez Aza, Francis
Chico Proano, Andrés
author Orozco, Marco A.
author_facet Orozco, Marco A.
Acurio, Karen
Martínez Gómez, Javier|||0000-0001-8807-7595
Vásquez Aza, Francis
Chico Proano, Andrés
author_role author
author2 Acurio, Karen
Martínez Gómez, Javier|||0000-0001-8807-7595
Vásquez Aza, Francis
Chico Proano, Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Inorganic PCMs
Thermal storage
Nitrate salt mixtures
Ciencia de los materiales
Materials science
topic Inorganic PCMs
Thermal storage
Nitrate salt mixtures
Ciencia de los materiales
Materials science
description This study presents the energy storage potential of nitrate salts for specific applications in energy systems that use renewable resources. For this, the thermal, chemical, and morphological characterization of 11 samples of nitrate salts as phase change materials (PCM) was conducted. Specifically, sodium nitrate (NaNO3), sodium nitrite (NaNO2), and potassium nitrate (KNO3) were considered as base materials; and various binary and ternary mixtures were evaluated. For the evaluation of the materials, differential Fourier transform infrared spectroscopy (FTIR), scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) to identify the temperature and enthalpy of phase change, thermal stability, microstructure, and the identification of functional groups were applied. Among the relevant results, sodium nitrite presented the highest phase change enthalpy of 220.7 J/g, and the mixture of 50% NaNO3 and 50% NaNO2 presented an enthalpy of 185.6 J/g with a phase change start and end temperature of 228.4 and 238.6 °C, respectively. This result indicates that sodium nitrite mixtures allow the thermal storage capacity of PCMs to increase. In conclusion, these materials are suitable for medium and high-temperature thermal energy storage systems due to their thermal and chemical stability, and high thermal storage capacity.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-11-26
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/50619
https://dx.doi.org/10.3390/ma14237223
url http://hdl.handle.net/10017/50619
https://dx.doi.org/10.3390/ma14237223
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
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 MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
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