A practical heat and mass transfer model between air and ionic liquid solution in an internally cooled dehumidifier with partial wetting

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In falling film heat and mass transfer models, complete wetting of the substrate is usually assumed. In this paper, a practical model for the simultaneous heat and mass transfer processes in an internally cooled dehumidifier paired with a newly developed ionic liquid desiccant from Evonik Industries is presented. The heat and mass transferred were estimated using heat and mass transfer coefficient analogies from the literature incorporating variable film thickness and partial wetting model; therefore, accounting for the change in the film thickness and wetted area in each control volume, respectively. Comparison between the predicted results from the partial and complete wetting models with the experimental data showed a better agreement for the former. Absolute deviations for the air outlet humidity ratio were within 15 and 35% for the partial and complete wetting models, respectively. The model with partial wetting is suggested for preliminary design and optimization of internally cooled contactors.

Original languageEnglish
Title of host publicationICR 2019 - 25th IIR International Congress of Refrigeration
EditorsVasile Minea
PublisherInternational Institute of Refrigeration
Pages1685-1692
Number of pages8
ISBN (Electronic)9782362150357
DOIs
Publication statusPublished - 2019
Event25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada
Duration: 2019 Aug 242019 Aug 30

Publication series

NameRefrigeration Science and Technology
Volume2019-August
ISSN (Print)0151-1637

Conference

Conference25th IIR International Congress of Refrigeration, ICR 2019
CountryCanada
CityMontreal
Period19/8/2419/8/30

Keywords

  • Heat and Mass Transfer
  • Internally Cooled Dehumidifier
  • Ionic Liquid
  • Modeling
  • Partial Wetting
  • Variable Film Thickness

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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