Development of a slug flow absorber working with ammonia-water mixture: Part II - Data reduction model for local heat and mass transfer characterization

H. Y. Kim, B. B. Saha, S. Koyama

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This study deals with a data reduction model for clarifying experimental results of a counter-current slug flow absorber, working with ammonia-water mixture, for significantly low solution flow rate conditions. The data reduction model to obtain the local heat and mass transfer coefficient on the liquid side is proposed by using the drift flux model to analyze the flow characteristics. The control volume method and heat and mass transfer analogy are employed to solve the combined heat and mass transfer problem. As a result, it is found that the local heat and mass transfer coefficient on the liquid side of the absorber is greatly influenced by the flow pattern. The heat and mass transfer coefficient at the frost flow region is higher than that at the slug flow region due to flow disturbance and random fluctuation. The solution flow rate and gas flow rate have influence on the local heat and mass transfer coefficient at the frost flow region. However, it is insignificant at the slug flow region.

Original languageEnglish
Pages (from-to)698-706
Number of pages9
JournalInternational Journal of Refrigeration
Volume26
Issue number6
DOIs
Publication statusPublished - Sep 2003

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

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