Heat and mass transfer characteristics of air bubbles and hot water by direct contact

H. Inaba, S. Aoyama, N. Haruki, A. Horibe, K. Nagayoshi

Research output: Contribution to journalArticle

7 Citations (Scopus)


This paper has dealt with direct contact heat and mass transfer characteristics of air bubbles in a hot water layer. The experiments were carried out by bubbling air in the hot water layer under some experimental conditions of air flow rate, inlet air temperature and humidity as a dispersion fluid, and hot water temperature and hot water layer depth as a continuous fluid. Heat transfer and evaporation of water vapor from hot water to air bubbles occurred during air bubbles ascending into the hot water. Air bubble flow patterns were classified into three regions of independent air bubble flow, transition and air bubble combination growth. Non-dimensional correlation equations of direct contact heat and mass transfer between air bubbles and hot water were derived by some non-dimensional parameters for three regions of bubble flow pattern.

Original languageEnglish
Pages (from-to)449-457
Number of pages9
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Issue number6
Publication statusPublished - Jun 1 2002


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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