Comparison of different modelings of pure substances during melting in a DSC experiment

► Raw analysis of thermograms for identification of PCM may lead to spurious results. ► Accurate analysis require the knowledge of exact geometery which is generally unknown. ► This issue may be overcome by choosing an equivalent problem. ► Thermodynamical properties are preserved with this method....

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Bibliographic Details
Published inThermochimica acta Vol. 528; no. 20; pp. 1 - 8
Main Authors Stéphane, Gibout, Erwin, Franquet, Jean-Pierre, Bédécarrats, Jean-Pierre, Dumas
Format Journal Article
LanguageEnglish
Dutch
Published Oxford Elsevier B.V 01.01.2012
Elsevier
Subjects
Boundaries
Chemical thermodynamics
Chemistry
Differential scanning calorimetry
Differential scanning calorimetry (DSC)
energy
Energy storage
Engineering Sciences
Equivalence
Exact sciences and technology
Experiment
Fluid mechanics
General and physical chemistry
General. Theory
Mechanics
Melting
Phase change material (PCM)
Phase change materials
Physics
properties
Reactive fluid environment
Thermics
Thermogram
Phase change material (PCM)
Model
Thermogram
Differential scanning calorimetry (DSC)
Melting
Experiment
Differential scanning calorimetry
Modeling
Models
Thermal analysis
PCM material
Thermodynamic properties
Comparative study
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Summary:► Raw analysis of thermograms for identification of PCM may lead to spurious results. ► Accurate analysis require the knowledge of exact geometery which is generally unknown. ► This issue may be overcome by choosing an equivalent problem. ► Thermodynamical properties are preserved with this method. ► Faster and simpler identification might be planned. Current challenges in the energy storage often involve phase change materials. Therefore, there is a real need for accurate determinations of their intrinsic properties. Regularly, differential scanning calorimetry is used to perform such a goal. Nevertheless, to obtain fair results, one needs to consider the transfer phenomenon inside the sample and at its boundary. This implies that the geometry should be known exactly, which is usually not the case. In this paper, we propose a way to avoid such issues, by considering an equivalent spherical model. Our final goal is to obtain a simple and fast method so as to plan future identifications of the thermodynamical properties of phase change materials.
Bibliography:http://dx.doi.org/10.1016/j.tca.2011.10.019
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2011.10.019