Preparation and thermophysical properties of nanoparticle-in-paraffin emulsion as phase change material

C. J. Ho, J. Y. Gao

Research output: Contribution to journalArticlepeer-review

230 Citations (Scopus)

Abstract

In this study, phase change material (PCM) embedded by nanoparticles was prepared by emulsifying alumina (Al2O3) nanoparticles in paraffin (n-octadecane) by means of a non-ionic surfactant. The formulated nanoparticle-in-paraffin emulsions contain the nanoparticles of 5 wt.% and 10 wt.%, respectively; their effective thermophysical properties, such as latent heat of fusion, density, dynamic viscosity, and thermal conductivity, were investigated experimentally. The experimentally measured density of the emulsions agrees excellently with that predicted based on the mixture theory. The measured thermal conductivity and dynamic viscosity for the nanoparticle-in-paraffin emulsions formulated show a nonlinear increase with the mass fraction of the nanoparticles compared with that for the pure paraffin, depending on the temperature.

Original languageEnglish
Pages (from-to)467-470
Number of pages4
JournalInternational Communications in Heat and Mass Transfer
Volume36
Issue number5
DOIs
Publication statusPublished - 2009 May 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Chemical Engineering(all)
  • Condensed Matter Physics

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