Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties

Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in reduction of greenhouse gas emissions, by scavenging thermal energy for later use. Therefore, it is useful to have summaries...

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Autores principales:	Samer Kahwaji, Mary Anne White
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	phase change materials melting thermodynamics alkyl chains thermal energy storage Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/906bb6578e814607847a37d46bc6ffc0
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spelling	oai:doaj.org-article:906bb6578e814607847a37d46bc6ffc02021-11-11T18:36:19ZOrganic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties10.3390/molecules262166351420-3049https://doaj.org/article/906bb6578e814607847a37d46bc6ffc02021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6635https://doaj.org/toc/1420-3049Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in reduction of greenhouse gas emissions, by scavenging thermal energy for later use. Therefore, it is useful to have summaries of phase change properties over a wide range of materials. In the present work, we review the relationship between molecular structure and trends in relevant phase change properties (melting temperature, and gravimetric enthalpy of fusion) for about 200 organic compounds from several chemical families, namely alkanes (paraffins), fatty acids, fatty alcohols, esters, diamines, dinitriles, diols, dioic acids, and diamides. We also review availability and cost, chemical compatibility, and thermal and chemical stabilities, to provide practical information for PCM selection. Compounds with even chain alkyl lengths generally give higher melting temperatures, store more thermal energy per unit mass due to more efficient packing, and are of lower cost than the comparable compounds with odd alkyl chains.Samer KahwajiMary Anne WhiteMDPI AGarticlephase change materialsmeltingthermodynamicsalkyl chainsthermal energy storageOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6635, p 6635 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	phase change materials melting thermodynamics alkyl chains thermal energy storage Organic chemistry QD241-441
spellingShingle	phase change materials melting thermodynamics alkyl chains thermal energy storage Organic chemistry QD241-441 Samer Kahwaji Mary Anne White Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
description	Materials that change phase (e.g., via melting) can store thermal energy with energy densities comparable to batteries. Phase change materials will play an increasing role in reduction of greenhouse gas emissions, by scavenging thermal energy for later use. Therefore, it is useful to have summaries of phase change properties over a wide range of materials. In the present work, we review the relationship between molecular structure and trends in relevant phase change properties (melting temperature, and gravimetric enthalpy of fusion) for about 200 organic compounds from several chemical families, namely alkanes (paraffins), fatty acids, fatty alcohols, esters, diamines, dinitriles, diols, dioic acids, and diamides. We also review availability and cost, chemical compatibility, and thermal and chemical stabilities, to provide practical information for PCM selection. Compounds with even chain alkyl lengths generally give higher melting temperatures, store more thermal energy per unit mass due to more efficient packing, and are of lower cost than the comparable compounds with odd alkyl chains.
format	article
author	Samer Kahwaji Mary Anne White
author_facet	Samer Kahwaji Mary Anne White
author_sort	Samer Kahwaji
title	Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
title_short	Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
title_full	Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
title_fullStr	Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
title_full_unstemmed	Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties
title_sort	organic phase change materials for thermal energy storage: influence of molecular structure on properties
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/906bb6578e814607847a37d46bc6ffc0
work_keys_str_mv	AT samerkahwaji organicphasechangematerialsforthermalenergystorageinfluenceofmolecularstructureonproperties AT maryannewhite organicphasechangematerialsforthermalenergystorageinfluenceofmolecularstructureonproperties
_version_	1718431775296847872

Organic Phase Change Materials for Thermal Energy Storage: Influence of Molecular Structure on Properties

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