Condensation heat exchanger has heat exchanger surfaces having a coating consisting of a alternating sequence of layers made up of a hard layer with amorphous carbon or a plasma polymer

摘要

Condensation heat exchanger has heat exchanger surfaces having a coating containing amorphous carbon for the condensation of non-metallic vapors. The coating consists of a alternating sequence of layers made up of a hard layer with amorphous carbon or a plasma polymer applied on the heat exchanger surface, and a soft layer with amorphous carbon or a plasma polymer. The final layer is a soft layer and has hydrophobic properties. Preferred Features: The coating has a number of two layer pairs each with a hard layer and a soft layer. The hard layer has a Vickers hardness of 1500-3500 and the soft layer has a Vickers hardness of 600-1500. The heat exchanger surfaces contain titanium, rust-free steel, chrome steel, aluminum, copper alloys or carbide formers.