Study of viscosity and specific heat capacity characteristics of water-based Al2O3 nanofluids at low particle concentrations

被引：142

作者：

Sekhar, Y. Raja ^{[1
,2
]}

Sharma, K. V. ^{[2
,3
]}

机构：

[1] VIT Univ, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India

[2] JNTU Coll Engn, Dept Mech Engn, Ctr Energy Studies, Hyderabad 500085, Andhra Pradesh, India

[3] JNTUH Coll Engn Manthani, Dept Mech Engn, Karimnagar 505212, Andhra Pradesh, India

来源：

JOURNAL OF EXPERIMENTAL NANOSCIENCE | 2015年 / 10卷 / 02期

关键词：

viscosity; Al2O3; nanofluids; temperature effect; specific heat capacity; low volume concentration; THERMAL-CONDUCTIVITY; TRANSFER ENHANCEMENT; SUSPENSIONS; TRANSPORT; BEHAVIOR;

D O I：

10.1080/17458080.2013.796595

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, the specific heat capacity and viscosity properties of water-based nanofluids containing alumina nanoparticles of 47nm average particle diameter at low concentrations are studied. Nanofluids were prepared with deionised water as base fluid at room temperature by adding nanoparticles at low volume concentration in the range of 0.01%-1% to measure viscosity. The effect of temperature on viscosity of the nanofluid was determined based on the experiments conducted in the temperature range of 25 degrees C to 45 degrees C. The results indicate a nonlinear increase of viscosity with particle concentration due to aggregation of particles. The estimated specific heat capacity of the nanofluid decreased with increase of particle concentration due to increase in thermal diffusivity. Generalised regression equations for estimating the viscosity and specific heat capacity of nanofluids for a particular range of particle concentration, particle diameter and temperature are established.

引用

页码：86 / 102

页数：17

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