V V-shaped structured surface to enhance condensation efficiency by promoting droplet jumping

摘要

The present invention relates to a superhydrophobic condensation heat transfer surface structure which realizes a droplet jumping mode. More specifically, the superhydrophobic condensation heat transfer surface structure comprises: a substrate; a wall of a microstructure formed on the surface of the substrate; and a nanostructure formed on the entire surface of the wall and the substrate. The microstructure has a shape on which V is continuously arranged when viewed from above the surface of the substrate. The surface of the wall and the substrate is coated with a hydrophobic material. The superhydrophobic condensation heat transfer surface structure causes condensate to move in a direction parallel with a surface in a process wherein the condensate grows to induce the condensate to quickly come in contact with other condensate in the vicinity. Accordingly, the superhydrophobic condensation heat transfer surface structure quickly removes condensate out of the surface by jumping, and reduces an average droplet escape diameter and an average droplet size on the surface to enhance condensation heat transfer performance.