Theoretical and Experimental study of the effect of Surface parameters of various materials on the water vapor condensation.

The aim of this research program is to study the effect of the surface parameters such as surface tension, surface adsorption and contact angle and also the material parameters such as interatomic potential and surface structure factor, on the condensation process of supersaturated water vapor on a solid substrate. Several experiments will be conducted on various materials (steel, cupper, glass, polymer, ?..?) . The control of these key parameters, namely, the surface tension and contact angle, will provide us with crucial information for each substrate material. This project presents a promising and innovative applications which enables industry to obtain enhancement of heat transfer coefficients using small surface area. The theoretical treatment of the phenomena will be via the application of Density Function Theory [DFT] to study the liquid-solid interface and saturated vapour-solid interface. For the bulk fluid water we employ the semi-empirical pair potential for water and soft-sphere model equation of state [EOS] in conjunction with the first order perturbation theory.