Modelling and Trade-Off Analysis of Performance Parameters for Counter Flow Packed Bed Liquid Desiccant air Dehumidifier

Mrinal Bhowmik, Muthukumar Palanisamy*, R. Anandalakshmi

*Corresponding author for this work

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

Abstract

Recently, sorption technology has taken significant attention as an alternative process to mechanical air conditioning systems for dehumidification of air without lowering the air dry-bulb temperature below its dew point temperature. In this perspective, an aqueous lithium chloride (LiCl) is considered as a more effective desiccant in desiccant sorption systems due to its higher moisture absorption capability. In the present study, an effort is made to develop a simple correlation to predict the vapour pressure of LiCl solution as a function of solution temperature and concentration. Based on the developed correlation, an Othmer chart is constructed for LiCl solution in the concentration range of 20–40% and 15–50 °C temperature range. A trade-off analysis has also been carried out among the performance parameters. It is shown that venture of optimum outcome is observed at solution to air flow rate ratio of 8.5 with a condensation rate, moisture and enthalpy effectiveness of 0.234 g/s, 71.5% and 72.5%, respectively. Subsequently, empirical regression models are developed for predicting the performance parameters, which reveals that the developed models are robust for surrogate modelling in dehumidifier testing paradigms.

Original languageEnglish
Title of host publicationTheoretical, Computational, and Experimental Solutions to Thermo-Fluid Systems - Select Proceedings of ICITFES 2020
EditorsMuthukumar Palanisamy, Velraj Ramalingam, Murugan Sivalingam
PublisherSpringer Science and Business Media Deutschland GmbH
Pages309-324
Number of pages16
ISBN (Print)9789813341647
DOIs
Publication statusPublished - 2021
Externally publishedYes
EventInternational Conference on Innovations in Thermo-Fluid Engineering and Sciences, ICITFES 2020 - Rourkela, India
Duration: 2020 Feb 102020 Feb 12

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

ConferenceInternational Conference on Innovations in Thermo-Fluid Engineering and Sciences, ICITFES 2020
Country/TerritoryIndia
CityRourkela
Period20/2/1020/2/12

Keywords

  • Dehumidification
  • Empirical correlations
  • LiCl desiccant
  • Moisture effectiveness
  • Trade-off analysis

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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