Open AccessTHEMODYNAMIC MECHANISM FOR THE CONDENSATION OF LIQUID DROPS ON THE CONDENSER SURFACE
Author(s) -
Cao Zhi-Jue,
Guo Yu
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.1823
Subject(s) - contact angle , condenser (optics) , condensation , materials science , curvature , liquid drop , thermodynamics , mechanics , radius , surface (topology) , surface energy , refrigerant , optics , heat exchanger , physics , composite material , geometry , light source , mathematics , computer security , computer science
Using the criterion of the free energy,we prove that the mechanical equilibrium condition for liquid droups on the condenser surface depends on the angle of contact (α).For α90°the chemical potential of liquid drops on the condenser surface is less than that of spherical drops with the same curvature.And the critical radius of the former is also less than that of the latter if they are at the same saturation level.For this reason the heat-transfer capability of liquid drops condensed on the walls of a vessel is stronger than that of the condensed liquid film.The suitable value is determined for the angle of contact.