Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/173959
Title: | Degradation of fatty acid phase‐change materials (PCM): new approach for its characterization |
Author: | Majó, Marc Sánchez, Ricard Barcelona Pons, Pol García Gómez, Jordi Fernández Renna, Ana Inés Barreneche, Camila |
Keywords: | Emmagatzematge d'energia tèrmica Àcids grassos Reologia Ciència dels materials Heat storage Fatty acids Rheology Materials science |
Issue Date: | 12-Feb-2021 |
Publisher: | MDPI |
Abstract: | The use of adequate thermal energy storage (TES) systems is an efficient way to achieve thermal comfort in buildings reducing the cooling and heating demand. Besides, deploy phase change materials (PCM) to meet and enhance the TES needs is highly effective and widely studied. In this paper, a study of the degradation of two fatty acids is presented, capric and myristic acids, in order to evaluate whether their thermo‐physical properties are affected throughout time during service. This was carried out by means of two different types of thermal treatments: degradation at constant temperature (thermal stability test), 60 °C during 100 h and 500 h, and degradation with heating and cooling cycling (thermal cycling stability), between a temperature range from 15 °C to 70 °C with 0.5 °C/min ramp during 500 and 1000 cycles. Despite no significant changes were meas‐ ured for myristic acid, experimental results revealed a decrease of melting enthalpy of 6.6% in capric acid thermally treated for 500 h. Evidences of chemical degradation were found that might explain the decrease in thermophysical properties during use. |
Note: | Reproducció del document publicat a: https://doi.org/10.3390/molecules26040982 |
It is part of: | Molecules, 2021, vol. 26, num. 4, p. 982 |
URI: | http://hdl.handle.net/2445/173959 |
Related resource: | https://doi.org/10.3390/molecules26040982 |
ISSN: | 1420-3049 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
707014.pdf | 1.47 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License