Molecular mechanisms of water evaporation (physical and chemical analysis)

TitleMolecular mechanisms of water evaporation (physical and chemical analysis)
Publication TypeJournal Article
Year of Publication2019
AuthorsKushnir, SV, Kost, MV, Sakhnyuk, II
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
Date Published02/2019

Based on the analysis of the literary and our own experimental data, the existence of three molecular evaporation mechanisms that can manifest themselves at different pressure (P) ratios, temperature (T), and vapor saturation (S) is revealed. I — emission of H2O molecules through the “windows” in the surface cluster grid at S < 0.5 and reduced P and T; II — accelerated emission of H2O and (H2O)2, when the entire surface is bombarded with H2O molecules from the gas phase at S > 1 and various P and T; III — destruction of the surface cluster mesh in the surface boiling mode at low P and elevated T. Under natural conditions, the main role is played by the mechanisms I (surface water) and II (water aerosols of the atmosphere).

Keywordsair / water interface, clusters, emission of water molecules, surface boiling, water evaporation mechanisms

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