Enhancement of laminar convective heat transfer using microparticle suspensions

Research output: Contribution to journalArticlepeer-review

Authors

  • J.Y. Zhu
  • P. Yi
  • T. Baum
  • K. Khoshmanesh
  • K. Ghorbani

Colleges, School and Institutes

Abstract

This paper investigates the enhancement of convective heat transfer within a sub-millimetre diameter copper tube using Al2O3, Co3O4 and CuO microparticle suspensions. Experiments are conducted at different particle concentrations of 1.0, 2.0 and 5.0 wt% and at various flow rates ranging from 250 to 1000 µl/min. Both experimental measurements and numerical analyses are employed to obtain the convective heat transfer coefficient. The results indicate a significant enhancement in convective heat transfer coefficient due to the implementation of microparticle suspensions. For the case of Al2O3 microparticle suspension with 5.0 wt% concentration, a 20.3 % enhancement in convective heat transfer coefficient is obtained over deionised water. This is comparable to the case of Al2O3 nanofluid at the same concentration. Hence, there is a potential for the microparticle suspensions to be used for cooling of compact integrated systems.

Details

Original languageEnglish
Pages (from-to)169-176
Number of pages8
JournalHeat and Mass Transfer
Volume53
Issue number1
Early online date6 Apr 2016
Publication statusPublished - Jan 2017