scholarly journals Switching between Crystallization from the Glassy and the Undercooled Liquid Phase in Phase Change Material Ge 2 Sb 2 Te 5

2019 ◽  
Vol 31 (39) ◽  
pp. 1900784 ◽  
Author(s):  
Julian Pries ◽  
Shuai Wei ◽  
Matthias Wuttig ◽  
Pierre Lucas
Keyword(s):  
Liquid Phase ◽  
Phase Change ◽  
Phase Change Material ◽  
Undercooled Liquid ◽  
Change Material

Prediction of Bulk Density of Microencapsuated Phase Change Material Slurry

2008 ◽  
Author(s):  
Chuanshan Dai ◽  
Huajun Wang ◽  
Liang Zhang
Keyword(s):  
Liquid Phase ◽  
Phase Change ◽  
Bulk Density ◽  
Phase Change Material ◽  
Thermal Capacity ◽  
Fabrication Technology ◽  
Solid Liquid ◽  
Change Material ◽  
Particle Geometry ◽  
Changing Process

The use of phase change material (PCM) particles suspended in a liquid-phase carrying fluid can provide additional thermal capacity from the latent heat associated with the solid-liquid phase changing process. It has the advantages of capable flowing and simultaneously a high effective heat capacity in a certain temperature range. However, the bulk thermophysical properties are very specific and may vary with many parameters such as particle geometry, chemical component, fabrication technology and temperature. This paper proposed a theoretical model for predicting the bulk density of microencapsulated PCM slurry in solid-liquid phase changing process basing on a thermodynamic analysis of free energy and Gibbs-Thomson theory. The effects of particle size and distribution, mass concentration and surface tension of PCM on the bulk slurry density were investigated.

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