Patent ID: 6568465
Filing Date: 2003-05-27
Classification: F28D,F28F,Y10T

Abstract:
Apparatus for transferring heat from a first heat exchange fluid to a liquid to be evaporated into a gaseous second heat exchange fluid, comprising:a thermally conductive element separating a first flow path for the first heat exchange fluid and a second flow path for the second heat exchange fluid; a first surface on said element in heat exchange relation with said first flow path; a second surface on said element opposite said first surface and in heat exchange relation with said second flow path; and a hydrophilic coating bonded on at least part of said second surface and made up of a powder of nominally spherically shaped particles including nickel, chromium, aluminum, cobalt and yttrium oxide bonded together with a braze metal predominantly made up of nickel, chromium and silicon and diffused into the nominally spherically shaped particles and said second surface, the weight ratio of nominally spherically shaped particles to braze metal being in a range on the order of 2-3 to 1.