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RESEARCH PRODUCT

Experimental results on adsorption beds for air dehumidification

Pietro FinocchiaroVincenzo Maria GentileMarco Beccali

subject

DesiccantMaterials science020209 energyThermodynamics02 engineering and technologychemistry.chemical_compoundAdsorptionSolar air conditioningPacked bedHeat exchanger0202 electrical engineering electronic engineering information engineeringComposite materialDECPacked bedAdsorption; DEC; Dehumidification; Packed bed; Silica gel; Solar cooling; Mechanical Engineering; Building and ConstructionSolar coolingSettore ING-IND/11 - Fisica Tecnica AmbientaleSilica gelbusiness.industryMechanical EngineeringSilica gelBuilding and Construction021001 nanoscience & nanotechnologychemistryAir conditioningHeat transferAdsorptionDehumidification0210 nano-technologybusiness

description

Desiccant rotors are commonly used in large scale solar cooling open cycle applications. As is well known, adsorption heat sensibly reduces the dehumidification capacity of the desiccant material and results in lower system performance. The aim of this work is to describe an innovative solution that permits simultaneous mass and heat transfer. In particular, two components working with silica gel fixed beds were studied and compared. The first component is a simple packed bed containing silica gel grains. The second component is a fin and tube heat exchanger commonly used in several air conditioning applications wherein the spaces between the fins are filled with silica gel grains. In this case, the adsorption material is cooled through a recooling loop. For both solutions, results are presented in terms of dehumidification performances versus operation time, storage of adsorption capacity and energy required for the regeneration of the desiccant.

10.1016/j.ijrefrig.2015.10.022http://hdl.handle.net/10447/298967