Direct contact cold heat extraction from water mixture of gel type latent heat storage material to air bubbles

Hideo Inaba, Akihiko Horibe, Naoto Haruki, Masahiro Murakami

Research output: Contribution to journalArticle

Abstract

This paper has dealt with cold heat extraction characteristics from the gel latent-cold-heat storage-material suspension with surfactant to air bubbles. The gel latent-cold-heat storage-material consisted of n-paraffin as the core latent-cold-heat storage-material and water as a heat transfer medium. The relationship between outflow air temperature in latent-cold-heat release process and various parameters was examined experimentally. As a result, especially concentration of the gel latent material added to water exerted an influence on gas holdup and cold heat extraction characteristics to air bubbles. The non-dimensional correlation equations for the temperature effectiveness of latent-heat storage process were derived in terms of the ratio of water layer height to diameter of latent heat material. Reynolds number of air flow, Stefan number and modified Stefan number including air humidity.

Original languageEnglish
Pages (from-to)1537-1544
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume68
Issue number669
DOIs
Publication statusPublished - May 2002

Keywords

  • Air bubble
  • Direct contact heat exchange
  • Latent heat storage
  • Paraffin

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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