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

Molecules

Rebecca Ravotti¹  Anastasia Stamatiou¹  Jörg Worlitschek¹  ColinR. Pulham² 

[1] Competence Centre Thermal Energy Storage (TES), Lucerne University of Applied Sciences and Arts, 6048 Horw, Switzerland;EaStCHEM, School of Chemistry, The University of Edinburgh, Edinburgh EH9 3FJ, UK;

关键词: triglycerides;    thermal energy storage;    phase change materials;    thermal properties;    enthalpy;    melting point;   

DOI  :  10.3390/molecules25235572

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown