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Experimental studies on heat and mass transfer in a packed bed of burnt clay impregnated with CaCl2liquid desiccant and exploring the use of gas side resistance model

Authors
Journal
Applied Thermal Engineering
1359-4311
Publisher
Elsevier
Publication Date
Volume
50
Issue
1
Identifiers
DOI: 10.1016/j.applthermaleng.2012.08.002
Keywords
  • Burnt Clay Particles
  • Calcium Chloride
  • Dehumidification
  • Gas Side Resistance Model

Abstract

Abstract An experimental and theoretical study on the transient adsorption characteristics of porous clay-CaCl2 bed is presented. In the experimental work, the spherical particles of burnt clay of 10 mm average diameter impregnated with liquid CaCl2 desiccant of 0.50 (wt.%) concentration are used as working desiccant in a vertical adsorption column. The bed properties are experimentally estimated. Measurements are made for transient values of exit air relative humidity and temperature. The influence of superficial velocity, inlet humidity ratio and bed height on the adsorption performance is investigated. In the theoretical study, governing equations for heat and mass transfer based on gas side resistance model is used. The numerical results obtained are compared with the results available in literature and the present experimental study.

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