Numerical modelling of PCMs encapsulated in spherical shells using inverse enthalpy-temperature functions

The study presents a numerical model that uses the enthalpy method in order to solve the moving boundary problem and to predict the thermal behaviour of phase change materials during solidification and melting. The commercially available paraffin RT21 is considered as phase change material, and the...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-06, Vol.876 (1), p.12003
Main Authors: Pop, O G, Iuga, C A, Tutunaru, L. Fechete, Domnita, F., Balan, M C
Format: Article
Language:English
Subjects:
Differential scanning calorimetry
Enthalpy
Heat measurement
Mathematical models
Numerical models
Paraffins
Phase change materials
Solidification
Spherical shells
Thermal energy
Thermodynamic properties
Thermophysical properties
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Summary:The study presents a numerical model that uses the enthalpy method in order to solve the moving boundary problem and to predict the thermal behaviour of phase change materials during solidification and melting. The commercially available paraffin RT21 is considered as phase change material, and the thermophysical properties of the paraffin were determined by differential scanning calorimetry. An inverse enthalpy-temperature function was determined based on the results of the differential scanning calorimetry measurements in order to model the phase change process. The model was experimentally validated, and good agreement was found between the computed and measured results.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/876/1/012003