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

Autor: Gabriel Rubio-Pérez, Fernando Aguilar, Natalia Muñoz-Rujas, Lukas Müller, Jörg Worlitschek, Andreas Bach
Rok vydání: 2020
Předmět:
Thermogravimetric analysis
Accuracy and precision
Materials science
020209 energy
Enthalpy
Thermodynamics
02 engineering and technology
Thermal energy storage
lcsh:Technology
Article
latent heat storage
Differential scanning calorimetry
Material selection
0202 electrical engineering
electronic engineering
information engineering
General Materials Science
lcsh:Microscopy
lcsh:QC120-168.85
thermogravimetric analysis
lcsh:QH201-278.5
business.industry
lcsh:T
thermal energy storage
021001 nanoscience & nanotechnology
Phase-change material
lcsh:TA1-2040
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
differential scanning calorimetry
0210 nano-technology
business
lcsh:Engineering (General). Civil engineering (General)
phase change material
lcsh:TK1-9971
Thermal energy
energy
Zdroj: Materials
Volume 13
Issue 20
Materials, Vol 13, Iss 4486, p 4486 (2020)
ISSN: 1996-1944
Popis: 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.
Databáze: OpenAIRE
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