Evaluación de la desecación de aire con desecante líquido a través de un proceso de burbujeo

Abstract

There are buildings where the thermal load related to humidity
generation (latent load) is very high, in these cases it is needed
to consume energy to remove moisture from the air to achieve
and maintain confort conditions. The most extended method to
reduce humidity content are based on cooling coils, this system
reduces the amount of water in the air stream through the
condensation of water on the coil surface. Another approach is
based on desiccant materials, it aims at improving the process
efficiency through the sequestration of water on this material
surface, it is caused by the adsortion capacity of desiccant
materials. As it is surface phenomenom, as higher is the contact
surface between air stream and desiccant, as much water will
be removed.
Solid desiccant have been implemented with commercial
solutions as desiccant wheels, it builds the desiccant material
on a support substrate, but the use of desiccant liquids is not
extended but at lab scale. Some of the reasons are related
to the reduced contact surface between liquid and air. The
evaluated approaches have focused on the application of liquid
desiccant film or spray to increase the contact surface. This
paper shows the assessment of an innovative approach based
on the generation of air bubbles into a desiccant liquid bath,
this approach aims at improving mass transfer rate.