A study on numerical simulations and experiments for mass transfer in bubble mode absorber of ammonia and water

Jae Cheol Lee, Ki Bong Lee, Byung Hee Chun, Chan Ho Lee, Jong Joo Ha, Sung Hyun Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

An absorber is a major component in the absorption refrigeration systems, and its performance greatly affects the overall system performance. In this study, both the numerical and experimental analyses in the absorption process of a bubble mode absorber were performed. Gas was injected into the bottom of the absorber at a constant solution flow rate. The region of gas absorption was estimated by both numerical and experimental analyses. A higher gas flow rate increases the region of gas absorption. As the temperature and concentration of the input solution decrease, the region of gas absorption decreases. In addition, the absorption performance of the countercurrent flow was superior to that of cocurrent. Mathematical modeling equations were derived from the material balance for the gas and liquid phases based on neglecting the heat and mass transfer of water from liquid to gas phase. A comparison of the model simulation and experimental results shows similar values. This means that this numerical model can be applied for design of a bubble mode absorber.

Original languageEnglish
Pages (from-to)551-558
Number of pages8
JournalInternational Journal of Refrigeration
Volume26
Issue number5
DOIs
Publication statusPublished - 2003 Aug

Keywords

  • Absorber
  • Absorption system
  • Ammonia-water
  • Bubble
  • Mass transfer
  • Modelling

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'A study on numerical simulations and experiments for mass transfer in bubble mode absorber of ammonia and water'. Together they form a unique fingerprint.

  • Cite this