Experimental study on density and thermal conductivity properties of Indian coal fly ash water-based nanofluid

被引：24

作者：

Kanti, Praveen ^{[1
]}

Korada, Viswanatha Sharma ^{[2
]}

Ramachandra, C. G. ^{[3
]}

Sai, P. H. V. Sesha Talpa ^{[4
]}

机构：

[1] Jyothy Inst Technol, Dept Mech Engn, Bangalore, Karnataka, India

[2] JNTUH Coll Engn, Dept Mech Engn, Ctr Energy Studies, Hyderabad, India

[3] Presidency Univ, Dept Mech Engn, Bangalore, Karnataka, India

[4] Mallareddy Coll Engn & Technol, Dept Mech Engn, Hyderabad, India

来源：

INTERNATIONAL JOURNAL OF AMBIENT ENERGY | 2020年 / 43卷 / 01期

关键词：

Coal fly ash; zeta sizer; density; thermal conductivity; DYNAMIC VISCOSITY; ENHANCEMENT; OXIDE;

D O I：

10.1080/01430750.2020.1751285

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In the present study, the effect of temperature and volume concentration on thermal conductivity and density of water-based coal fly ash nanofluid for volume concentration range of 0-0.5% in temperatures ranging from 30 degrees C to 60 degrees C is investigated. The fly ash nanoparticles were characterised by scanning electron microscopy (SEM) and Zeta sizer to have an average particle diameter of 11.5 nm. The maximum thermal conductivity enhancement of 11.9% when compared to water at 60 degrees C is observed with 0.5% volume concentration at the same temperature. The experimental data indicate an increase in the value of thermal conductivity and density with an increase in fly ash nanofluid concentration. Also, the thermal conductivity of nanofluid increases with temperature while density decrease with increase in temperature.

引用

页码：2557 / 2562

页数：6

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