Effect of alumina nanoparticles in the fluid on heat transfer in double-pipe heat exchanger system

Byung Hee Chun, Hyun Uk Kang, Sung Hyun Kim

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

This study was performed to investigate the convective heat transfer coefficient of nanofluids made of several alumina nanoparticles and transformer oil which flow through a double pipe heat exchanger system in the laminar flow regime. The nanofluids exhibited a considerable increase of heat transfer coefficients. Although the thermal conductivity of alumina is not high, it is much higher than that of the base fluids. The nanofluids tested displayed good thermal properties. One of the possible reasons for the enhancement on heat transfer of nanofluids can be explained by the high concentration of nanoparticles in the thermal boundary layer at the wall side through the migration of nanoparticles. To understand the enhancement of heat transfer of nanofluid, an experimental correlation was proposed for an alumina-transformer oil nanofluid system.

Original languageEnglish
Pages (from-to)966-971
Number of pages6
JournalKorean Journal of Chemical Engineering
Volume25
Issue number5
DOIs
Publication statusPublished - 2008 Sep

Keywords

  • Alumina nanoparticle
  • Convective heat transfer
  • Heat transfer coefficient
  • Laminar flow
  • Nanofluid

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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