Effect of temperature on the effective thermal conductivity of n-tetradecane-based nanofluids containing copper nanoparticles

被引：2
|
作者：
Haifeng Jiang [1 ]
Qianghui Xu [1 ]
Chao Huang [1 ]
Lin Shi [1 ]
机构：
[1] Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Thermal Engineering Tsinghua University
来源：
Particuology | 2015年 / 22卷 / 05期
关键词：
Nanofluid; Thermal conductivity; High temperature; Brownian motion;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
Nanofluids were prepared by dispersing Cu nanoparticles(~20nm) in n-tetradecane by a two-step method.The effective thermal conductivity was measured for various nanoparticle volume fractions(0.0001-0.02) and temperatures(306.22-452.66 K).The experimental data compares well with the Jang and Choi model.The thermal conductivity enhancement was lower above 391.06 K than for that between306.22 and 360.77 K.The interfacial thermal resistance increased with increasing temperature.The effective thermal conductivity enhancement was greater than that obtained with a more viscous fluid as the base media at 452.66 K because of nanoconvection induced by nanoparticle Brownian motion at high temperature.
引用
收藏
页码：95 / 99
页数：5
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