  Degradation in performances of air conditioners and refrigerators is caused
by a frost formation and adhesion on the surface. In the present study, by
means of the classical molecular dynamics simulation, we investigate how and
how much the nanotextured surface characteristics, such as surface wettability
and geometry, influenced the interfacial thermal resistance (ITR) between the
solid wall and the water/ice. The ITR of the interfacial region was comparable
in both the water and the ice states. As the nanostructure gaps became
narrower, the ITR of the interfacial region decreased. The local ITR had a weak
negative correlation with the local H2O molecule density regardless of the
phase of the H2O molecules. The local ITR decreased as the local density
increased. The greater amount of the thermal energy was transferred through the
material interface by means of the intermolecular interaction when more the H2O
molecules were located in the proximity area, which was closer to the Pt solid
wall than the first adsorption layer peak. When the H2O molecules were in the
crystal form on the solid wall, the proximity molecules decreased, and then the
local ITR significantly increased.
