Interface fluid heat transfer system

A process for condensing a flowing condensable vapor material into a thin film of a liquid, comprising:

• (a) providing a thin liquid film of a first liquid at 2.degree.-80.degree. C. temperature on an exposed outer surface of a porous structure having the outer surface orientedvertically at 0.degree.-75.degree. C. with a vertical plane, said structure having a porosity of 40-70%;
• (b) providing a flowing condensable cooking oil vapor material contacting said liquid film, and condensing said vapor on said liquid film without contacting said porous structure so as to provide a condensate second liquid, sand condensate liquid being substantially immiscible with said liquid film;
• and
• (c) draining said condensate liquid together with only a minor portion of said first liquid from the porous structure.

An apparatus adapted for condensing a flowing condensable vapor onto a thin film of a liquid, comprising:

• (a) a porous structure having at least one exposed surface which is oriented at an angle less than 80.degree. with a vertical plane and has a porosity of 20-80%;
• (b) a thin film of liquid maintained on said exposed surface of said porous structure;
• (c) an upflowing vapor material contacting said liquid film without contacting said porous structure, so than the vapor is condensed on the liquid film and drains downwardly therefrom;
• and
• (d) a collection means located below said porous structure and thin film of liquid, so as to collect and drain away the condensed vapor together with a portion of liquid from said liquid film.

An apparatus adapted for condensing a flowing condensable vapor onto a thin film of a liquid, comprising:

• (a) a porous structure having at least one exposed outer surface which is oriented at an angle of 0.degree.-75.degree. with a vertical plane, said porous structure formed of at least one porous metal tube having a porosity of 40-70%.
• (b) a thin film of liquid maintained on said exposed outer surface of the porous structure, said liquid film being maintained by a liquid circulation system;
• (c) an upflowing vapor material contacting said liquid film without contacting said porous structure, so that the vapor is condensed on the liquid film and drains downwardly therefrom;
• and
• (d) a collection means located below said porous structure and thin film of liquid, so as to collect and drain away the condensed vapor together with a portion of liquid from said liquid film.