Thermal conductivity measurement and characterization of binary nanofluids

Jung Yeul Jung, Changhwan Cho, Wook Hyun Lee, Yong Tae Kang

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)


Binary nanofluids, nanoparticle suspensions in binary mixture, are developed to enhance the heat and mass transfer performance of absorption refrigeration cycles. To stabilize the nanoparticles in a strong electrolyte, polymer is used as a steric stabilizer. The effective thermal conductivities of the binary nanofluids with the concentrations of nanoparticle up to 0.1 vol% are measured using the transient hot wire method. Comparing the thermal conductivity change with time, it is found that the dispersion stability of nanofluids is a dominant factor for enhancing the thermal conductivity of binary nanofluids. It is also found that the thermal conductivity of the binary nanofluids (H2O/LiBr binary mixture with Al2O3 nanoparticles) increases with the particle volume concentration and enhances by 2.2% at 0.1 vol% concentration condition. Also a modified dimensionless group is proposed to find the maximum radius of nanoparticles to maintain stable nanofluids. In this study, it was estimated ∼1.3 μm.

Original languageEnglish
Pages (from-to)1728-1733
Number of pages6
JournalInternational Journal of Heat and Mass Transfer
Issue number9-10
Publication statusPublished - 2011 Apr
Externally publishedYes


  • Absorption system
  • Binary mixture
  • Colloidal suspension
  • Stabilizer
  • Thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


Dive into the research topics of 'Thermal conductivity measurement and characterization of binary nanofluids'. Together they form a unique fingerprint.

Cite this