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Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties

Latent Heat Storage (LHS) with Phase-Change Materials (PCMs) represents a high energy density storage technology which could be applied in a variety of applications such as waste heat recovery and integration of renewable energy technologies in energy systems. To increase the sustainability of these...

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Autores principales: Ravotti, Rebecca, Worlitschek, Jörg, Pulham, Colin R., Stamatiou, Anastasia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730147/
https://www.ncbi.nlm.nih.gov/pubmed/33260969
http://dx.doi.org/10.3390/molecules25235572
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author Ravotti, Rebecca
Worlitschek, Jörg
Pulham, Colin R.
Stamatiou, Anastasia
author_facet Ravotti, Rebecca
Worlitschek, Jörg
Pulham, Colin R.
Stamatiou, Anastasia
author_sort Ravotti, Rebecca
collection PubMed
description Latent Heat Storage (LHS) with Phase-Change Materials (PCMs) represents a high energy density storage technology which could be applied in a variety of applications such as waste heat recovery and integration of renewable energy technologies in energy systems. To increase the sustainability of these storage solutions, PCMs have to be developed with particular regard to bio-origin and biodegradability. Triglycerides represent an interesting class of esters as the main constituents of animal and vegetable fats, with attractive thermal properties. In order to be used as PCMs, the thermal behaviour of triglycerides has to be fully understood, as in some cases they have been reported to show polymorphism and supercooling. This study assesses the suitability of triglycerides as PCMs by reviewing the literature published so far on their behaviour and properties. In particular, melting points, enthalpies of fusion, polymorphism, thermal conductivities, heat capacities and thermal cycling stabilities are considered, with a focus on LHS and thermal energy storage applications. In addition, the efforts conducted regarding modelling and the prediction of melting points and enthalpies based on chemical structures are summarized and assessed.
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spelling pubmed-77301472020-12-12 Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties Ravotti, Rebecca Worlitschek, Jörg Pulham, Colin R. Stamatiou, Anastasia Molecules Review Latent Heat Storage (LHS) with Phase-Change Materials (PCMs) represents a high energy density storage technology which could be applied in a variety of applications such as waste heat recovery and integration of renewable energy technologies in energy systems. To increase the sustainability of these storage solutions, PCMs have to be developed with particular regard to bio-origin and biodegradability. Triglycerides represent an interesting class of esters as the main constituents of animal and vegetable fats, with attractive thermal properties. In order to be used as PCMs, the thermal behaviour of triglycerides has to be fully understood, as in some cases they have been reported to show polymorphism and supercooling. This study assesses the suitability of triglycerides as PCMs by reviewing the literature published so far on their behaviour and properties. In particular, melting points, enthalpies of fusion, polymorphism, thermal conductivities, heat capacities and thermal cycling stabilities are considered, with a focus on LHS and thermal energy storage applications. In addition, the efforts conducted regarding modelling and the prediction of melting points and enthalpies based on chemical structures are summarized and assessed. MDPI 2020-11-27 /pmc/articles/PMC7730147/ /pubmed/33260969 http://dx.doi.org/10.3390/molecules25235572 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Ravotti, Rebecca
Worlitschek, Jörg
Pulham, Colin R.
Stamatiou, Anastasia
Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title_full Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title_fullStr Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title_full_unstemmed Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title_short Triglycerides as Novel Phase-Change Materials: A Review and Assessment of Their Thermal Properties
title_sort triglycerides as novel phase-change materials: a review and assessment of their thermal properties
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730147/
https://www.ncbi.nlm.nih.gov/pubmed/33260969
http://dx.doi.org/10.3390/molecules25235572
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