Performance of overall heat transfer in multi-channel heat exchanger by alumina nanofluid

Ching Song Jwo, Lung Yue Jeng, Tun-Ping Teng, Chien Chih Chen

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27 Citations (Scopus)

Abstract

This study employs a direct synthesis method to prepare alumina/water (Al2O3/water) nanofluid working fluid for a multi-channel heat exchanger (MCHE) experiment, and then simulates its application to electronic chip cooling system to evaluate the practicability of its actual performance. The experimental variables included nanofluids of different weight concentrations (0, 0.5, and 1.0 wt.%) and the inlet water temperature at different flow values. Results show that the overall heat transfer coefficient ratio was higher at higher nanoparticle concentrations. In other words, the overall heat transfer coefficient ratio was higher when the probability of collision between nanoparticles and the wall of the heat exchanger was increased under higher concentration, confirming that nanofluids have considerable potential for use in electronic chip cooling systems.

Original languageEnglish
JournalJournal of Alloys and Compounds
Volume504
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2010 Aug 1

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Keywords

  • Heat conduction
  • Nanostructured materials
  • Thermodynamic properties

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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