A model for the thermal conductivity of nanofluids - the effect of interfacial layer

被引：320

作者：

Leong, K. C. ^{[1
]}

Yang, C. ^{[1
]}

Murshed, S. M. S. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2006年 / 8卷 / 02期

关键词：

nanoparticles; interfacial layer; nanofluids; thermal conductivity; colloids; heat exchanger;

D O I：

10.1007/s11051-005-9018-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A model for predicting the effective thermal conductivity of nanofluids is proposed. It has been documented that the interfacial layer at the solid (particle)/liquid interface and particle size is one of the major mechanisms for enhancing the thermal conductivity of nanofluids. Comparing with other classical models, the proposed model takes into account some additional effects including volume fraction, thickness, thermal conductivity of the interfacial layer and particle size. The proposed model is found to be better than the existing models since the predicted effective thermal conductivity of different types of nanofluids are closer to the experimental results.

引用

页码：245 / 254

页数：10

共 25 条

[1]

Choi S.U.S., 1995, ASME, P99

[2]

CHOI SUS, 2002, DOE BES 20 S EN ENG

[3] Temperature dependence of thermal conductivity enhancement for nanofluids [J].

Das, SK ;

Putra, N ;

Thiesen, P ;

Roetzel, W .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2003, 125 (04) :567-574

[4]

DING Y, 2004, P 6 INT S HEAT TRANS, P66

[5] Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles [J].

Eastman, JA ;

Choi, SUS ;

Li, S ;

Yu, W ;

Thompson, LJ .

APPLIED PHYSICS LETTERS, 2001, 78 (06) :718-720

[6] Thermal transport in nanofluids [J].

Eastman, JA ;

Phillpot, SR ;

Choi, SUS ;

Keblinski, P .

ANNUAL REVIEW OF MATERIALS RESEARCH, 2004, 34 :219-246

[7] Enhanced thermal conductivity through the development of nanofluids [J].

Eastman, JA ;

Choi, US ;

Li, S ;

Thompson, LJ ;

Lee, S .

NANOPHASE AND NANOCOMPOSITE MATERIALS II, 1997, 457 :3-11

[8] THERMAL CONDUCTIVITY OF HETEROGENEOUS 2-COMPONENT SYSTEMS [J].

HAMILTON, RL ;

CROSSER, OK .

INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1962, 1 (03) :187-&

[9] Thermal conductivity of graded composites: Numerical simulations and an effective medium approximation [J].

Hui, PM ;

Zhang, X ;

Markworth, AJ ;

Stroud, D .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (22) :5497-5503

[10] Role of Brownian motion in the enhanced thermal conductivity of nanofluids [J].

Jang, SP ;

Choi, SUS .

APPLIED PHYSICS LETTERS, 2004, 84 (21) :4316-4318

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