Turbulent forced convection heat transfer of nanofluids with twisted tape insert in a plain tube

被引：26

作者：

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

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

Mamat, Rizalman ^{[1
]}

Anuar, Shahrani ^{[1
]}

机构：

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

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

来源：

2013 INTERNATIONAL CONFERENCE ON ALTERNATIVE ENERGY IN DEVELOPING COUNTRIES AND EMERGING ECONOMIES (2013 AEDCEE) | 2014年 / 52卷

关键词：

forced convection; heat transfer coefficient; nanofluid; Nusselt number; twisted tape; FRICTION FACTOR; LAMINAR-FLOW; SUSPENSIONS; TIO2;

D O I：

10.1016/j.egypro.2014.07.081

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：

Experimental determination of heat transfer coefficients of SiO2/water and TiO2/water nanofluid up to 3% volume concentration flowing in a circular tube is undertaken. The investigations are conducted in the Reynolds number range of 5000 to 25000 at a bulk temperature of 30 degrees C. The experiments are undertaken for flow in a circular tube with twisted tapes of different twist ratios in the range of 5 <= H/D <= 93. The heat transfer enhancement is inversely increased with twist ratio. The heat transfer coefficient of SiO2/water nanofluid at 3.0% volume concentration is 27.9% higher than water flow for the same twist ratio of five. However, the value of heat transfer coefficient of TiO2/water nanofluid evaluated at the same concentration is 11.4% greater than water for twist ratio five. Regression equations for Nusselt number estimation are developed valid for water and nanofluid flow with twisted tape inserts under turbulent flow conditions. (C) 2014 Published by Elsevier Ltd.

引用

页码：296 / 307

页数：12

共 21 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]

[Anonymous], 1995, DEV APPL NONNEWTONIA

[3]

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

[4] SOME PERSPECTIVES ON ENHANCED HEAT-TRANSFER - 2ND-GENERATION HEAT-TRANSFER TECHNOLOGY [J].

BERGLES, AE .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1988, 110 (4B) :1082-1096

[5] 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

[6] Experimental study of turbulent convective heat transfer and pressure drop of dilute CuO/water nanofluid inside a circular tube [J].

Fotukian, S. M. ;

Esfahany, M. Nasr .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2010, 37 (02) :214-219

[7] Heat transfer and flow behaviour of aqueous suspensions of TiO2 nanoparticles (nanofluids) flowing upward through a vertical pipe [J].

He, Yurong ;

Jin, Yi ;

Chen, Haisheng ;

Ding, Yulong ;

Cang, Daqiang ;

Lu, Huilin .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (11-12) :2272-2281

[8] Experimental investigation of oxide nanofluids laminar flow convective heat transfer [J].

Heris, SZ ;

Etemad, SG ;

Esfahany, AN .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2006, 33 (04) :529-535

[9] HEAT-TRANSFER AND PRESSURE-DROP CORRELATIONS FOR TWISTED-TAPE INSERTS IN ISOTHERMAL TUBES .2. TRANSITION AND TURBULENT FLOWS [J].

MANGLIK, RM ;

BERGLES, AE .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1993, 115 (04) :890-896

[10] Enhanced thermal conductivity of TiO2 -: water based nanofluids [J].

Murshed, SMS ;

Leong, KC ;

Yang, C .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2005, 44 (04) :367-373

← 1 2 3 →