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

被引：336

作者：

Ho, C. J. ^{[1
]}

Gao, J. Y. ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2009年 / 36卷 / 05期

关键词：

Nanoparticles; Phase change material; Emulsion; Thermophysical properties; HEAT-TRANSFER ENHANCEMENT; THERMAL-CONDUCTIVITY; STORAGE-SYSTEM; PCM; SOLIDIFICATION; PROTECTION; COMPOSITE; NANOFLUID; MODULES; MATRIX;

D O I：

10.1016/j.icheatmasstransfer.2009.01.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：467 / 470

页数：4

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