Heat and mass transfer characteristics of R124-DMAC bubble absorption in a vertical tube absorber

Mengnan Jiang, Shiming Xu, Xi Wu, Wei Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

Experimental investigation for a visual vertical tubular bubble absorber was done with R124 (2-chloro-l,l,l,2,-tetrafluoroethane)-DMAC (N′,N′- dimethylacetamide) as working fluid. The objective of this investigation was to obtain key parameters that affect on the heat and mass transfer performance of R124-DMAC bubble absorption, such as vapor and solution flow rates, solution inlet temperatures and mass fractions, and nozzle orifice diameters. The results showed that the overall heat and volumetric mass transfer coefficients increased with increase of vapor and solution flow rates, and decreased with increase of solution inlet temperatures and mass fractions, and the nozzle orifice diameter. Especially, solution inlet mass fractions and the nozzle orifice diameter significantly influenced on mass transfer performance, while solution inlet temperatures and vapor flow rates influenced greatly on the heat transfer performance. A correlation of Sherwood number for R124-DMAC mixture in a visual vertical tubular bubble absorber was provided by the method of multiple linear regressions. The error band from the present study was within ±15%.

Original languageEnglish
Pages (from-to)466-474
Number of pages9
JournalExperimental Thermal and Fluid Science
Volume81
DOIs
Publication statusPublished - 1 Feb 2017
Externally publishedYes

Keywords

  • Bubble absorption
  • Heat transfer
  • Mass transfer
  • R124/DMAC mixture
  • Vertical tube

ASJC Scopus subject areas

  • General Chemical Engineering
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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