Heat and mass transfer enhancement for falling film absorption process by SiO 2 binary nanofluids

Hyundae Kim, Jinhee Jeong, Yong Tae Kang

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The objectives of this study are to visualize the dispersion of nano-particles in binary nanofluids, to find the effect of key parameters such as SiO 2 nano-particles concentration on the distribution stability in the H 2O/LiBr nanofluids, and to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids. The binary nanofluids are H 2O/LiBr with SiO 2 nano-particle. The key parameters are the base fluid concentration of LiBr, the concentration of SiO 2 nano-particles in vol%, and kinds of additives. It is found that the concentration of SiO 2 nano-particles should be less than 0.01 regardless of the existence of the distribution stabilizer. It is also found that the maximum improvements of heat transfer rate and mass transfer rate reach 46.8% and 18%, respectively, when the concentration of SiO 2 nano-particle is 0.005 vol%.

Original languageEnglish
Pages (from-to)645-651
Number of pages7
JournalInternational Journal of Refrigeration
Volume35
Issue number3
DOIs
Publication statusPublished - 2012 May 1
Externally publishedYes

Keywords

  • Absorption system
  • Distribution
  • Enhancement
  • Stability
  • Water-lithium bromide

ASJC Scopus subject areas

  • Mechanical Engineering
  • Building and Construction

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