| Abstract Scope |
In this paper we present our last results on sol-gel silica coatings modified with different organic groups (Si-O-R, in which R=Methyl-, Phenyl-, Octyl-) for improving the saturated vapor and humid air condensation dynamics in heat exchangers and water harvesting devices, as well as for ice prevention.
Wettability plays a crucial role in controlling the condensation and, it can be principally controlled via two factors, chemical composition and surface roughness. For these purposes, several hybrid silica sol-gel coatings were deposited on aluminium substrates and their efficiency was studied in custom-made heat exchange apparatus both in condition of saturated vapor and humid air. Also, in the case of ice prevention the control of surface wettability and roughness play a pivotal role in ice adhesion and formation. |