Experimental analysis on chemical dehumdification of air and desiccant regeneration with H2O/LiCl solution

This paper presents the experimental tests on the chemical dehumidification of air by a liquid desiccant and desiccant regeneration carried out in an absorption / desorption tower with random packing. The experimental tests include 28 dehumidification runs and 19 desiccant regeneration runs carried out with the traditional hygroscopic solution H2O/LiCl in the typical operative ranges of air conditioning applications. The experimental results are reported in terms of humidity reduction, desiccant concentration change and tower efficiency. The experimental results are also compared to a one-dimensional simulation code of a packed tower: a fair agreement was found between experimental and calculated performance. The experimental results show that chemical dehumidification of air by H2O/LiCl ensures consistent reduction in humidity ratio, which is suitable for the application to air conditioning or drying processes.