Abstract: An air-cooled steam condensing module with an integral vent condenser has a steam header, one or more rows of condensing tubes between the steam header and a (generally lower) common condensate header. The module also has at least one row of vent condenser or dephlegmator tubes located adjacent the condensing tubes which connect the lower header to a vent header. The dephlegmator tubes may be of the same or larger diameter than the condensing tubes.

Abstract: A method for uniformly distributing the vapor conducted from a parallel flow condenser section of an air cooled condenser into the dephlegmator cubes of a subsequently arranged countercurrent condenser includes throttling gaseous fluids present at the ends of the dephlegmator tubes on the collector side when the gaseous fluids are withdrawn from the dephlegmator tubes. In the air cooled condenser for carrying out the method, at least the predominant majority of the dephlegmator tubes has resistance elements at or near where they connect to the gas collector.