Heat transfer and friction factor of water based TiO2 and SiO2 nanofluids under turbulent flow in a tube

被引：116

作者：

Azmi, W. H. ^{[1
]}

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

Sarma, P. K. ^{[3
]}

Mamat, Rizalman ^{[1
]}

Najafi, G. ^{[4
]}

机构：

[1] Univ Malaysia Pahang, Fac Mech Engn, Pekan 26600, Pahang, Malaysia

[2] Univ Teknol PETRONAS, Dept Mech Engn, Tronoh 31750, Perak, Malaysia

[3] GITAM Univ, Visakhapatnam 530045, Andhra Pradesh, India

[4] Tarbiat Modares Univ, Tehran, Iran

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2014年 / 59卷

关键词：

Nanofluid; Titanium dioxide; Silicon dioxide; Friction factor; Heat transfer coefficients; THERMAL-CONDUCTIVITY; LAMINAR-FLOW; SUSPENSIONS;

D O I：

10.1016/j.icheatmasstransfer.2014.10.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat transfer coefficient and friction factor of TiO2 and SiO2 water based nanofluids flowing in a circular tube under turbulent flow are investigated experimentally under constant heat flux boundary condition. TiO2 and SiO2 nanofluids with an average particle size of 50 nm and 22 nm respectively are used in the working fluid for volume concentrations up to 3.0%. Experiments are conducted at a bulk temperature of 30 degrees C in the turbulent Reynolds number range of 5000 to 25,000. The enhancements in viscosity and thermal conductivity of TiO2 are greater than SiO2 nanofluid. However, a maximum enhancement of 26% in heat transfer coefficients is obtained with TiO2 nanofluid at 1.0% concentration, while SiO2 nanofluid gave 33% enhancement at 3.0% concentration. The heat transfer coefficients are lower at all other concentrations. The particle concentration at which the nanofluids give maximum heat transfer has been determined and validated with property enhancement ratio. It is observed that the pressure drop is directly proportional to the density of the nanoparticle. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：30 / 38

页数：9

共 33 条

[1] AUGMENTATION OF HEAT TRANSPORT IN LAMINAR-FLOW OF POLYSTYRENE SUSPENSIONS .1. EXPERIMENTS AND RESULTS [J].

AHUJA, AS .

JOURNAL OF APPLIED PHYSICS, 1975, 46 (08) :3408-3416

[2] Experimental study on the effect of TiO2-water nanofluid on heat transfer and pressure drop [J].

Arani, A. A. Abbasian ;

Amani, J. .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2012, 42 :107-115

[3] Experimental determination of turbulent forced convection heat transfer and friction factor with SiO2 nanofluid [J].

Azmi, W. H. ;

Sharma, K. V. ;

Sarma, P. K. ;

Mamat, Rizalman ;

Anuar, Shahrani ;

Rao, V. Dharma .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2013, 51 :103-111

[4]

Bergles A E, 1985, HDB HEAT TRANSFER AP, P31

[5]

Blasius H., 1913, MITT FORSCH ARB GEB, V131

[6]

Bontemps Andre, 2008, 2008 Second International Conference on Thermal Issues in Emerging Technologies, Theory and Applications (ThETA), P261, DOI 10.1109/THETA.2008.5167175

[7]

Choi S., 1995, ASME FED, V231, P99, DOI DOI 10.1115/1.1532008

[8]

Dittus F.W., 1985, Int. Commun. Heat Mass, V12, P3, DOI [10.1016/0735-1933(85)90003-X, DOI 10.1016/0735-1933(85)90003-X]

[9] An experimental study on the heat transfer performance and pressure drop of TiO2-water nanofluids flowing under a turbulent flow regime [J].

Duangthongsuk, Weerapun ;

Wongwises, Somchai .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2010, 53 (1-3) :334-344

[10] Hydraulic and heat transfer study of SiO2/water nanofluids in horizontal tubes with imposed wall temperature boundary conditions [J].

Ferrouillat, Sebastien ;

Bontemps, Andre ;

Ribeiro, Joao-Paulo ;

Gruss, Jean-Antoine ;

Soriano, Olivier .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2011, 32 (02) :424-439

← 1 2 3 4 →