Convective heat transfer for water-based alumina nanofluids in a single 1.02-mm tube

W. Y. Lai, Patrick Phelan, S. Vinod, Ravi Prasher

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations

Abstract

Nanofluids are colloidal solutions which contain a small volume fraction of suspended submicron particles or fibers in heat transfer liquids, such as water or glycol mixtures. Compared with the base fluid, numerous experiments have generally indicated an increase in effective thermal conductivity and a strong temperature dependence of the static effective thermal conductivity. However, in practical applications, a heat conduction mechanism may not be sufficient for cooling high-heat-dissipation devices such as microelectronics or powerful optical equipment. Thus, the thermal performance under convective heat transfer conditions becomes our main task. We report here the heat transfer coefficient in both developing and fully-developed regions by using water-based alumina nanofluids. Our experimental test section consists of a single 1.02-mm-diameter stainless steel tube, which is electrically heated to provide a constant wall heat flux. Both pressure drop and temperature differences are measured. The characterization of nanofluids such as pH, electrical conductivity, particle sizing and zeta potential are also documented. Based on these results, the analysis and applicability of convective heat sinks containing nanofluids are evaluated for contemporary uses.

Original languageEnglish (US)
Title of host publication2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM
Pages970-978
Number of pages9
DOIs
StatePublished - 2008
Event2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM - Orlando,FL, United States
Duration: May 28 2008May 31 2008

Publication series

Name2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM

Other

Other2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM
CountryUnited States
CityOrlando,FL
Period5/28/085/31/08

Keywords

  • Forced convection
  • Laminar flow
  • Nanofluid
  • Nanofluid characterization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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