Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/138200
Title: Degradation study of bio-based phase change materials to improve the energy efficiency of active systems
Other Titles: Estudi de la degradació de materials de canvi de fase d’origen vegetal per a la millora de la eficiència energètica en sistemes actius
Author: Sánchez Valls, Ricard
Director/Tutor: Fernández Renna, Ana Inés
Barreneche, Camila
Keywords: Emmagatzematge d'energia tèrmica
Àcids grassos
Materials
Treballs de fi de grau
Heat storage
Fatty acids
Materials
Bachelor's thesis
Issue Date: Jun-2019
Abstract: Nowadays, sustainability is one of the most important fields of research due to the importance of making a profitable use of the planet resources. In many fields are working to develop new ways to improve energy efficiency. This is the case of development in phase change materials, a type of chemical substances which contribute to a better efficiency of the thermal energy storage in systems like buildings or refrigerate compartments. There are different materials that can be used as phase change materials, but bio-based materials are very interesting to overcome those made by fossil fuel, for their sustainable characteristics. However, bio-based PCM commercially distributed have been not investigated in deep and due to the lack of investigation on them, these phase change materials implementation in actual buildings is low. One of the principle problems of these materials is the lack of information about their degradation towards daily thermal conditions in a real building. This work focuses in the study of degradation of two fatty acids used as PCM, capric acid and myristic acid, in order to evaluate if their structure or their thermo-physical properties change after two different types of thermal treatments which try to reproduce the daily conditions of a building. Some similar investigations have been previously done on fatty acids degradation, but they focused characterization on infrared spectroscopy, not being able to determinate a structural change on the fatty acids molecules. In this work, further characterization is done, such as DSC and TGA to analyse thermo-physical properties, rheometry to determinate changes in viscosity, and gas chromatography with mass spectrometer detector to obtain better results in structural characterization.
Note: Treballs Finals de Grau de Química, Facultat de Química, Universitat de Barcelona, Any: 2019, Tutores Ana Inés Fernández Renna, Camila Barreneche Guerisoli
URI: http://hdl.handle.net/2445/138200
Appears in Collections:Treballs Finals de Grau (TFG) - Química

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