Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials

Measuring thermo-physical properties of phase change materials (PCM) in a consistent and reliable manner is essential for system layout of thermal energy storages and correspondingly material selection. Only if basic properties are assessed in a comparable way a selection process leads to the top ca...

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Main Authors: Lukas Müller, Gabriel Rubio-Pérez, Andreas Bach, Natalia Muñoz-Rujas, Fernando Aguilar, Jörg Worlitschek
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/13/20/4486
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spelling doaj-9e014b3741a04939933b5ab5275818942020-11-25T03:35:23ZengMDPI AGMaterials1996-19442020-10-01134486448610.3390/ma13204486Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change MaterialsLukas Müller0Gabriel Rubio-Pérez1Andreas Bach2Natalia Muñoz-Rujas3Fernando Aguilar4Jörg Worlitschek5Competence Centre Thermal Energy Storage (TES), Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandEscuela Politécnica Superior, Universidad de Burgos, 09006 Burgos, SpainBusiness Unit Materials Characterization, Mettler Toledo GmbH, 8606 Nänikon, SwitzerlandEscuela Politécnica Superior, Universidad de Burgos, 09006 Burgos, SpainEscuela Politécnica Superior, Universidad de Burgos, 09006 Burgos, SpainCompetence Centre Thermal Energy Storage (TES), Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandMeasuring thermo-physical properties of phase change materials (PCM) in a consistent and reliable manner is essential for system layout of thermal energy storages and correspondingly material selection. Only if basic properties are assessed in a comparable way a selection process leads to the top candidate for any given application and thus enhances market penetration of renewable energy sources coupled with thermal energy storage. In this study, we focus on differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) as basic assessment techniques and develop consistent measurement procedures to create a database with comparable results. We show consistency of the measured results through analysis of coefficient of variation (CV), being in the mean 1.69%, 0.05%, 0.06% and 4.00% for enthalpy, melting onset, melting peak and maximum operating temperature, respectively. Overall, 23 PCM have been measured with the presented methodology, which was mainly possible due to the reduced measurement and preparation time per PCM compared to standard techniques, while achieving similar accuracy and precision.https://www.mdpi.com/1996-1944/13/20/4486phase change materiallatent heat storagethermal energy storagedifferential scanning calorimetrythermogravimetric analysisenergy
collection DOAJ
language English
format Article
sources DOAJ
author Lukas Müller
Gabriel Rubio-Pérez
Andreas Bach
Natalia Muñoz-Rujas
Fernando Aguilar
Jörg Worlitschek
spellingShingle Lukas Müller
Gabriel Rubio-Pérez
Andreas Bach
Natalia Muñoz-Rujas
Fernando Aguilar
Jörg Worlitschek
Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
Materials
phase change material
latent heat storage
thermal energy storage
differential scanning calorimetry
thermogravimetric analysis
energy
author_facet Lukas Müller
Gabriel Rubio-Pérez
Andreas Bach
Natalia Muñoz-Rujas
Fernando Aguilar
Jörg Worlitschek
author_sort Lukas Müller
title Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
title_short Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
title_full Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
title_fullStr Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
title_full_unstemmed Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials
title_sort consistent dsc and tga methodology as basis for the measurement and comparison of thermo-physical properties of phase change materials
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2020-10-01
description Measuring thermo-physical properties of phase change materials (PCM) in a consistent and reliable manner is essential for system layout of thermal energy storages and correspondingly material selection. Only if basic properties are assessed in a comparable way a selection process leads to the top candidate for any given application and thus enhances market penetration of renewable energy sources coupled with thermal energy storage. In this study, we focus on differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) as basic assessment techniques and develop consistent measurement procedures to create a database with comparable results. We show consistency of the measured results through analysis of coefficient of variation (CV), being in the mean 1.69%, 0.05%, 0.06% and 4.00% for enthalpy, melting onset, melting peak and maximum operating temperature, respectively. Overall, 23 PCM have been measured with the presented methodology, which was mainly possible due to the reduced measurement and preparation time per PCM compared to standard techniques, while achieving similar accuracy and precision.
topic phase change material
latent heat storage
thermal energy storage
differential scanning calorimetry
thermogravimetric analysis
energy
url https://www.mdpi.com/1996-1944/13/20/4486
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