METHOD FOR PRODUCING IMPROVED HEAT TRANSFER SURFACE

摘要

METHOD FOR PRODUCING IMPROVED HEAT TRANSFER SURFACE The invention relates to a method of improving the heat transfer properties in boiling liquids of tubes and other surfaces by applying a very porous reticulated organic foam layer which has been precoated with graphite in contact with the tube surface, and then plating a thin metal coating on the foam substrate. Preferably, the tube is copper and the plating consists of an electroplated layer of copper which is applied over the conductive graphite coated foam. The foam is preferably in the form of a thin tape which is spirally wound about the tube. Pyrolysis of the foam after plating improves the heat transfer performance of the tube. A method for applying the graphite to the foam is also disclosed.