A study on the effects of temperature and volume fraction on thermal conductivity of copper oxide nanofluid

Ching Song Jwo, Ho Change, Tun Ping Teng, Mu Jnug Kao, Yu Ting Guo

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

By using copper oxide nanofluid fabricated by the self-made Submerged Arc Nanofluid Synthesis System (SANSS), this paper measures the thermal conductivity under different volume fractions and different temperatures by thermal properties analyzer, and analyzes the correlation among the thermal conductivity, volume fraction, and temperature of nanofluid. The CuO nanoparticles used in the experiment are needle-like, with a mean particle size of about 30 nm. They can be stably suspended in deionized water for a long time. The experimental results show that under the condition that the temperature is 40°C when the volume fraction of nanofluid increases from 0.2% to 0.8%, the thermal conductivity increment of the prepared nanofluid towards deionized water can be increased from 14.7% to 38.2%. Under the condition that the volume fraction is 0.8%, as the temperature of nanofluid rises from 5 °C to 40 °C the thermal conductivity increment of the prepared nanofluid towards deionized water increases from 5.9% to 38.2%. Besides, the effects of temperature change are greater than the effects of volume fraction on the thermal conductivity of nanofluid. Therefore, when the self-made copper oxide nanofluid is applied to the heat exchange device under medium and high temperature, an optimal radiation effect can be acquired.

Original languageEnglish
Pages (from-to)2161-2166
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume7
Issue number6
DOIs
Publication statusPublished - 2007 Jun 1

Keywords

  • CuO nanofluid
  • Thermal conductivity
  • Volume fraction

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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