Thermal conductivity of an ethylene glycol/water-based nanofluid with copper-titanium dioxide nanoparticles: An experimental approach

Kin Yuen Leong, Idayu Razali, K. Z. Ku Ahmad, Hwai Chyuan Ong, Mariyam Jameelah Ghazali, Mohd Rosdzimin Abdul Rahman

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Heat transfer fluid with low thermal conductivity limits the efficiency of thermal systems, such as heat exchangers, which require heat transfer fluid with high thermal conductivity. There is a demand to synthesize heat transfer fluids with high thermal conductivity. The emergence of nanoparticles has led to the development of nanofluids. Nanofluids can be classified as non-hybrid and hybrid nanofluids. This study investigated the thermal conductivity characteristics of a copper‑titanium dioxide (Cu-TiO2) hybrid nanofluid and compared with those of a non-hybrid (Cu and TiO2) nanofluid. In addition, the effects of various factors (weight percentages of the nanoparticles, types of surfactants, pH values of the base fluid solution and sonication times) on the thermal conductivity of theCu-TiO2 hybrid nanofluid were studied. The thermal conductivity of theCu-TiO2 hybrid nanofluid increased in accordance with an increment in the weight percentage of the nanoparticles. The hybrid nanofluid containing 0.8 wt% of Cu-TiO2 and polyvinylpyrrolidone (PVP) as surfactant showed the highest thermal conductivity, exhibiting an improvement of 9.8% compared to that of the base fluid.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalInternational Communications in Heat and Mass Transfer
Volume90
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Ethylene Glycol
Ethylene glycol
titanium oxides
Titanium dioxide
glycols
Copper
Thermal conductivity
ethylene
thermal conductivity
Nanoparticles
copper
nanoparticles
Water
water
Fluids
fluids
heat transfer
Heat transfer
Surface-Active Agents
Surface active agents

Keywords

  • Hybrid nanofluid
  • Non-hybrid nanofluid
  • pH
  • Sonication time
  • Surfactant
  • Thermal conductivity

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Chemical Engineering(all)
  • Condensed Matter Physics

Cite this

Thermal conductivity of an ethylene glycol/water-based nanofluid with copper-titanium dioxide nanoparticles : An experimental approach. / Leong, Kin Yuen; Razali, Idayu; Ku Ahmad, K. Z.; Ong, Hwai Chyuan; Ghazali, Mariyam Jameelah; Abdul Rahman, Mohd Rosdzimin.

In: International Communications in Heat and Mass Transfer, Vol. 90, 01.01.2018, p. 23-28.

Research output: Contribution to journalArticle

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