Influence of Thermo-Physical Properties on the Flow and Heat Transfer in Rectangular Micro-Channels

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Abstract:

This paper investigated the behaviors of flow and heat transfer of single-phase in rectangular micro-channels with three-dimensional numerical analysis. The single micro-channel is 200μm deep, 50μm wide. Deionized water was used as the working fluid. The fluid physical properties varying with temperature and Re number were studied. Comparisons were made among the results obtained from experiments, numerical simulations, and from those in the literature. The results indicated that the friction factors decreasing along the flow direction were ascribed to the fluid temperature rising under the unified heat flux boundary condition. It was found that influence of viscosity variation with temperature and viscous dissipation effect could be too significant to be neglected.

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Periodical:

Advanced Materials Research (Volumes 347-353)

Pages:

2640-2644

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Online since:

October 2011

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[1] WU H Y, CHENG Ping. An experimental study of convective heat transfer in silicon micro-channels with different surface conditions [J]. Int. J. Heat Mass. Transfer, 46(2003),p.2547

DOI: 10.1016/s0017-9310(03)00035-8

Google Scholar

[2] QU W, MUDAWAR I. Analysis of three-dimensional heat. transfer in micro-channel heat sinks[J]. Int. J.Heat Mass. Transfer, , 45(2002),p.3973

DOI: 10.1016/s0017-9310(02)00101-1

Google Scholar

[3] TOH K C, CHEN X Y, CHAI J C. Numerical computation of fluid flow and heat transfer in micro-channels [J]. Int. J. Heat Mass. Transfer, , 45(2002):p.5133

DOI: 10.1016/s0017-9310(02)00223-5

Google Scholar

[4] LIU N H, SU C J. Micro-Channel Heat Exchanger[D]. Master of Science Thesis California State Polytechnic University, Pomona, (2002)

Google Scholar

[5] YILMAZ T. General Equations for Pressure Drop for Laminar Flow in Ducts o f Arbitrary Cross Sections [J]. Journal of Energy Resources Technology, 112(1990),p.220

DOI: 10.1115/1.2905761

Google Scholar

[6] SHAH R K, LONDON A L. Advances in Heat Transfer, Supplement 1, Laminar Forced Flow Convection in Ducts[M]. Academic Press, New York, (1978)

DOI: 10.1016/b978-0-12-020051-1.50001-2

Google Scholar

[7] MALA GM, LI D. Flow characteristics of water in microtubes [J]. Int. J. Heat and Fluid Flow, , 20(1999),p.142

DOI: 10.1016/s0142-727x(98)10043-7

Google Scholar