The Effective Thermal Conductivity of Water Based Nanofluids at Different Temperatures

被引：10

作者：

Srinivas, T. ^{[1
]}

Vinod, A. Venu ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Chem Engn, Warangal 506004, Andhra Pradesh, India

来源：

JOURNAL OF TESTING AND EVALUATION | 2016年 / 44卷 / 01期

关键词：

nanoparticles; alumina nanofluid; copper oxide nanofluid; titanium dioxide nanofluid; effective thermal conductivity; HEAT-TRANSFER; ETHYLENE-GLYCOL; PARTICLE-SIZE; ENHANCEMENT; AL2O3; DEPENDENCE; VISCOSITY; FLUIDS;

D O I：

10.1520/JTE20140537

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Three types of Al2O3/water, CuO/water, and TiO2/water nanofluids were prepared by dispersing nanoparticles in water. A surfactant (cetyltrimethylammonium bromide (CTAB)) was used to improve the dispersion of nanoparticles and suppress the formation of particle clusters to obtain stable suspensions. The effective thermal conductivity was measured using a thermal property analyzer. The addition of a surfactant did not have any effect on the thermal conductivity. The effect of nanoparticle particle concentration (0.3, 0.6, 1, 1.5, and 2 wt. %) at four nanofluid temperatures (40, 45, 50, and 60 degrees C) was investigated. Results indicated that the thermal conductivity increased with increases in particle concentration and temperature. Two models (linear and nonlinear) were developed to predict the thermal conductivity.

引用

页码：280 / 289

页数：10

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