Atmospheric Water Harvesting: Role of Surface Wettability and Edge Effect.

ABSTRACT: Atmospheric water is emerging as an important potable water source. The present work experimentally and theoretically investigates water condensation and collection on flat surfaces with contrasting contact angles and contact angle hysteresis (CAH) to elucidate their roles on water mass collection efficiency. The experimental results indicate that a hydrophilic surface promotes nucleation and individual droplets growth, and a surface with a low CAH tends to let a smaller droplet to slide down, but the overall water mass collection efficiency is independent of both surface contact angle and CAH. The experimental results agree well with our theoretical calculations. During water condensation, a balance has to be struck between single droplet growth and droplet density on a surface so as to m

SUBMITTER: Jin Y 

PROVIDER: S-EPMC6607251 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature