Heat exchange surface including a hydrophobic coating layer
View Patent ↗A device for withdrawing heat energy from air. The device includes a layer of a substantially hydrophobic coating on a heat exchange surface. The coating has a lower surface tension than water, to repel water and prevent the formation of water condensation on the surface. For example, the coating can be a fluoropolymer such as 1,1,2,3,3,3 hexafluoropropene.
1. A device for withdrawing heat energy from air comprising:
a. a heat exchange surface for absorbing heat energy; and
b. a hydrophobic coating layer on the heat exchange surface, the hydrophobic coating layer consisting essentially of a fluoropolymer of polyfluoropropene, the hydrophobic coating layer having a lower surface tension than water to repel water and prevent the formation of water condensation on the heat exchange surface.
2. The device of claim 1 wherein the polyfluoropropene is 1,1,2,3,3,3 hexafluoropropene.