Improving Indoor Air Quality Using Liquid Desiccant Heat Exchanger

Liquid desiccants are used to improve indoor air quality and to decrease the energy consumption of the air conditioning system. In this paper chemical dehumidification of air by a liquid desiccant in a total heat and mass exchanger was investigated by modeling of such a system. the estimated decrease in air humidity and temperature of the fresh ambient air flowing inside using liquid desiccant heat exchanger was studied. The liquid desiccants applied were H2O/LiBr, H2O/LiCl and H2O/CaCl2 solutions. The estimated effectiveness of such a system using various liquid desiccants was estimated to be about 53.9 percent.

Keywords:

Liquid desiccant , Total heat exchanger , Air quality , Effectiveness