Abstract: In a casing of an air heater-cooler there is mounted an additional partition between the wall of the casing and a main partition to form a section for the passage of a heat transfer agent being utilized. Heat transfer elements are provided with finned inserts freely fitted on the surface of the heat transfer elements in the above section and in a section, for the passage of the flow of air being humidified, a capillary porous lining is made at the surface of the inserts.

Abstract: The proposed cooler has the form of a thermal tube (1) with zones (2 and 3) for evaporation and condensation, respectively, and outer fins (4) in the zone (3). The cooler has a casing (5) open at one side to admit a flow of gas, the casing accommodating fins (4) so that ends thereof form with a wall of the casing (5) at the other side a cavity (A) to reverse the flow of gas. Adjacent fins (4) are hermetically connected into pairs (6), and form passages (7, 8) between each pair and inside each pair. Provided at the walls of the inner passages (8) is a capillary porous lining (9) ends of which are in contact with a liquid medium (10).