Absorption performance enhancement by nano-particles and chemical surfactants in binary nanofluids

Jin Kyeong Kim, Jun Young Jung, Yong Tae Kang

Research output: Contribution to journalArticlepeer-review

145 Citations (Scopus)


The objectives of this paper are to visualize the bubble behavior during the NH3/H2O absorption process with chemical surfactant and nano-particles and to study the effect of nano-particles and surfactants on the absorption characteristics. Binary nanofluid which means binary mixture with nano-sized particles is tested to apply nanofluid to the absorption system. Cu, CuO and Al2O3 nano-particles are added into NH3/H2O solution to make the binary nanofluids, and 2-ethyl-1-hexanol, n-octanol and 2-octanol are used as the surfactants. The concentration of ammonia in the basefluid, that of nano-particles in the nanofluid, and that of surfactants in the nanofluid are considered as the key parameters. The results show that the addition of surfactants and nano-particles improves the absorption performance up to 5.32 times. It can be concluded that the addition of both surfactants and nano-particles enhances significantly the absorption performance during the ammonia bubble absorption process.

Original languageEnglish
Pages (from-to)50-57
Number of pages8
JournalInternational Journal of Refrigeration
Issue number1
Publication statusPublished - 2007 Jan
Externally publishedYes


  • Absorption system
  • Additives
  • Ammonia-water
  • Improvement
  • Nanofluid
  • Particle
  • Performance
  • Refrigeration
  • Surface tension

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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