Technical Briefs

New Bio-Inspired, Multiphase Forced Convection Cooling by ABS Plastic or Encapsulated Paraffin Beads

[+] Author and Article Information
Fatemeh Hassanipour, José L. Lage

Department of Mechanical Engineering, Bobby B. Lyle School of Engineering, Southern Methodist University, Dallas, TX 75275-0337

J. Heat Transfer 132(7), 074501 (Apr 27, 2010) (3 pages) doi:10.1115/1.4000710 History: Received March 07, 2009; Revised October 26, 2009; Published April 27, 2010; Online April 27, 2010

Preliminary experimental results of forced convection by octadecane paraffin (encapsulating phase-change material (EPCM)) particles, acrylonitrile butadiene styrene plastic particles, or by clear (of particulates) water flowing through a heated parallel-plates channel are reported. The objective is to investigate the mixing effect of the particles vis-à-vis the latent heat effect. The particle concentration is kept at 3% in volume. The results, in terms of surface-averaged channel temperature and heat transfer coefficient for different fluid speed and heat-flux, indicate the mixing effect to account from 19% to 68% of the heat transfer enhancement produced by using EPCM particles. Hence particle mixing, even at a very low particle concentration, is an effective convection mechanism.

Copyright © 2010 by American Society of Mechanical Engineers
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Figure 1

Sketch of entire experimental set-up showing circulating flow of water and particles

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Figure 2

Effect of heat-flux on average surface temperature for u=0.0035 m/s

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Figure 3

Effect of heat-flux on average surface temperature for u=0.0120 m/s

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Figure 4

Effect of flow velocity on heat transfer coefficient for q″=14 kW/m2




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