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Prediction of Bulk Density of Microencapsuated Phase Change Material Slurry

[+] Author Affiliations
Chuanshan Dai, Huajun Wang, Liang Zhang

Tianjin University, Tianjin, China

Paper No. MNHT2008-52038, pp. 1113-1118; 6 pages
doi:10.1115/MNHT2008-52038
From:
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B
  • Tainan, Taiwan, June 6–9, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4292-4 | eISBN: 0-7918-3813-7
  • Copyright © 2008 by ASME

abstract

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.

Copyright © 2008 by ASME

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