Thermo - physical characterization of Paraffin based Fe3O4 nanofluids

被引：41

作者：

Khedkar, Rohit S. ^{[1
]}

Kiran, Sai A. ^{[1
]}

Sonawane, Shriram S. ^{[1
]}

Wasewar, Kailas ^{[1
]}

Umre, Suresh. S. ^{[2
]}

机构：

[1] Visvesvaraya Natl Inst Technol, Dept Chem Engn, Nagpur 440010, Maharashtra, India

[2] Visvesvaraya Natl Inst Technol, Dept Chem, Nagpur 440010, Maharashtra, India

来源：

CHEMICAL, CIVIL AND MECHANICAL ENGINEERING TRACKS OF 3RD NIRMA UNIVERSITY INTERNATIONAL CONFERENCE ON ENGINEERING (NUICONE2012) | 2013年 / 51卷

关键词：

Nanoparticles; Ethylene glycol; Paraffin oil; Thermal conductivity; Viscosity; HEAT-TRANSFER; CONDUCTIVITY ENHANCEMENT; DEPENDENCE;

D O I：

10.1016/j.proeng.2013.01.047

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, the thermal conductivity and viscosity of Fe3O4 nanoparticles in paraffin were investigated up to a volume fraction range of 0.01 - 0.1 of nanoparticles. The nanofluid was prepared by dispersing Fe3O4 nanoparticles in paraffin by using ultrasonic equipment. The mean diameter of Fe3O4 nanoparticles was 25 nm. The thermal conductivity of nanofluids has been measured using the transient hot-wire method based KD2Pro. Viscosity of nanofluids also studied with TA instruments rheometer. The experimental results showed that the thermal conductivity increases with an increase of particle volume fraction, and the enhancement observed to be 20 % over the base fluid for a paraffin nanofluid with 0.1 volume fraction of Fe3O4 nanoparticles at room temperature. Same effect on viscosity also, the increase in viscosity with the increase of particle volume fraction was much less than predicted by the Einstein model. From this research, it seems that the increase in the nanofluid viscosity is smaller than the enhancement in the thermal conductivity. (c) 2013 The Authors. Published by Elsevier Ltd.

引用

页码：342 / 346

页数：5

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