The effect of chemical surfactants on the absorption performance during NH3/H2O bubble absorption process

Jin Kyeong Kim, Jun Young Jung, Jung Hwan Kim, Moo Geun Kim, T. Kashiwagi, Yong Tae Kang

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The objectives of this paper are to visualize the bubble behavior by shadow graphic method, to examine the effect of surfactants on the bubble type absorption, and to find the optimal conditions to design highly effective compact absorber for NH3/H2O absorption system. The initial concentrations of NH3/H2O solution and the kinds and the concentrations of surfactants are considered as key parameters. By measuring the absorption rate for each condition, two effects of the addition of surfactants, the Marangoni and the barrier effect, are compared with each other. The results show that the addition of surfactant enhances the absorption performance up to 4.81 times. The experimental correlations of the effective absorption ratio for each surfactant, 2-ethyl-1-hexanol, n-octanol, and 2-octanol, are suggested within ±15, ±10, and ±10%, respectively.

Original languageEnglish
Pages (from-to)170-177
Number of pages8
JournalInternational Journal of Refrigeration
Volume29
Issue number2
DOIs
Publication statusPublished - 2006 Mar 1

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Keywords

  • Absorption
  • Absorption system
  • Additive
  • Ammonia-water
  • Bubble
  • Experiment
  • Imaging
  • Measurement
  • Surface tension

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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