Temperature dependence of thermal conductivity enhancement for nanofluids

Sarit Kumar Das, Nandy Setiadi Djaya Putra, Peter Thiesen, Wilfried Roetzel

Research output: Contribution to journalArticlepeer-review

1914 Citations (Scopus)

Abstract

Usual heat transfer fluids with suspended ultra fine particles of nanometer size are named as nanofluids, which have opened a new dimension in heat transfer processes. The recent investigations confirm the potential of nanofluids in enhancing heat transfer required for present age technology. The present investigation goes detailed into investigating the increase of thermal conductivity with temperature for nano fluids with water as base fluid and particles of Al2O3 or CuO as suspension material. A temperature oscillation technique is utilized for the measurement of thermal diffusivity and thermal conductivity is calculated from it. The results indicate an increase of enhancement characteristics with temperature, which makes the nanofluids even more attractive for applications with high energy density than usual room temperature measurements reported earlier.

Original languageEnglish
Pages (from-to)567-574
Number of pages8
JournalJournal of Heat Transfer
Volume125
Issue number4
DOIs
Publication statusPublished - 1 Aug 2003

Keywords

  • Conduction
  • Heat transfer
  • Suspensions
  • Thermal
  • Thermophysical

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