Abstract: An air-supplied dry cooler for the condensation of water vapor includes at least one direct-flow condenser and at least one counter-flow condenser (dephlegmator), wherein heat exchanger pipes of the counter-flow condenser are connected to an upper suction chamber, and wherein a cover reducing the discharge cross-section of at least one heat exchanger pipe is provided with cover orifices. The sum of the cross-sectional surfaces of the cover orifices corresponds to no more than the cross-sectional surface of a suction pipe connection to the suction chamber.

Abstract: An air condenser with upward oriented tube bundles for condensing steam, wherein the tube bundles form sidewalls of a cell in form of a circumferentially closed, vertically extending polygon, wherein a fan is arranged above the polygon. Two of the circumferential sidewalls of the cell are formed by tube bundles, wherein these sidewalls enclose an angle smaller than 90° and wherein the at least one further side wall is impermeable to air.

Abstract: Method for producing a heat exchanger with the following steps: a) hot dip refining a steel sheet to form a corrosion-protection layer (3), wherein the corrosion-protection layer (3) contains zinc and between 0.5% and 60% aluminum; b) removal of the corrosion-protection layer (3) from one side of the steel sheet; c) production of a heat exchanger tube (2) from this steel sheet, wherein the corrosion-protection layer (3) is arranged on the outside; d) provision of ribs (6) of aluminum or an aluminum alloy; e) provision of a flux; f) provision of a filler material (8) containing aluminum and silicon in the connecting region between the ribs (6) and the outside of the heat exchanger tube (2); g) connection of the heat exchanger tube (2) to the ribs (6) in a brazing operation.

Abstract: Method for setting up a condensation plant, for which two tube bundles (2, 3) are placed on a roof-shaped preassembly frame (1) and connected to one another in a first area. The tube bundles (2, 3,), along with the base plates (5, 6) thereof which hold the heat-exchanger tubes, are placed in supports (10) at a roof ridge strut (11) of the preassembly frame (1) in such a way that the mutually facing longitudinal sides (12, 13) of the base plates (5, 6) can be welded together by means of a root seam, before the preassembled roof-shaped tube bundle delta (14) is lifted from the preassembly frame (1) and brought into the installed position.

Abstract: An air-cooled condenser system (1) comprises a platform (2) carrying heat exchanger elements (4), steam distribution lines (6), and fans (5). The platform (2) is arranged on pillars (3), which previously are introduced into the soil beneath the platform. The platform (2) is mounted close to the ground, wherein the intake chamber (21) required beneath the platform (2) is formed by removing soil beneath the platform (2). In this way, the platform (2) can be mounted at low height and with little effort.

Abstract: The invention relates to a condenser (1) which is exposed to air, having a ventilator (2) which conveys cooling air, is arranged in particular below condensation elements (4, 5) arranged in an A-shape, and presses intake cooling air into the triangular interior space (6) which is delimited by the ventilator (2) and the condensation elements (4, 5). Also provided are means for adiabatic cooling of the cooling air, wherein the means for adiabatic cooling are contact bodies (7) which can be placed in contact with water to be evaporated and which are arranged in the region of the cooling air flow (3).

Abstract: An air-supplied dry cooler for the condensation of water vapor includes at least one direct-flow condenser and at least one counter-flow condenser (dephlegmator), wherein heat exchanger pipes of the counter-flow condenser are connected to an upper suction chamber, and wherein a cover reducing the discharge cross-section of at least one heat exchanger pipe is provided with cover orifices. The sum of the cross-sectional surfaces of the cover orifices corresponds to no more than the cross-sectional surface of a suction pipe connection to the suction chamber.

Abstract: The invention relates to a condensation system comprising heat exchanger elements arranged above fans which are held in fan sections (1) arranged as a frame carried by a supporting framework (2). The supporting framework (2) comprises a plurality of supports (3), at least one support (3) comprising a column (5) extending vertically in relation to the fan sections (1), and head struts (6) connecting above the column (5) and extending obliquely in relation to the fan section (1) and the column (5), said struts extending towards the corners (7) of a fan section (1).

Abstract: A condensation method is described according to which exhaust steam from a turbine (1) of a condensation power plant is supplied to an air-cooled condenser (3) for condensation. The condensate (K) obtained in the condenser (3) is preheated in a condensate heating stage (6) prior to its supply to an evaporator upstream of the turbine (1) by means of a feed pump. The condensate (K) is heated by a partial steam flow (T) of the turbine (1). A degasifier (8) is mounted in parallel to the condensate heating stage (6) for degasifying the makeup feed water (W).

Abstract: Method for producing a heat exchanger with the following steps: a) hot dip refining a steel sheet to form a corrosion-protection layer (3), wherein the corrosion-protection layer (3) contains zinc and between 0.5% and 60% aluminum; b) removal of the corrosion-protection layer (3) from one side of the steel sheet; c) production of a heat exchanger tube (2) from this steel sheet, wherein the corrosion-protection layer (3) is arranged on the outside; d) provision of ribs (6) of aluminum or an aluminum alloy; e) provision of a flux; f) provision of a filler material (8) containing aluminum and silicon in the connecting region between the ribs (6) and the outside of the heat exchanger tube (2); g) connection of the heat exchanger tube (2) to the ribs (6) in a brazing operation.

Abstract: Method for setting up a condensation plant, for which two tube bundles (2, 3) are placed on a roof-shaped preassembly frame (1) and connected to one another in a first area. The tube bundles (2, 3,), along with the base plates (5, 6) thereof which hold the heat-exchanger tubes, are placed in supports (10) at a roof ridge strut (11) of the preassembly frame (1) in such a way that the mutually facing longitudinal sides (12, 13) of the base plates (5, 6) can be welded together by means of a root seam, before the preassembled roof-shaped tube bundle delta (14) is lifted from the preassembly frame (1) and brought into the installed position.

Abstract: The invention relates to a power station comprising a condenser installation (2) for the condensation of water vapour, said condenser installation being mounted on a supporting structure (8) and comprising heat exchanger elements (5) past which cooling air flows from below. The condenser installation (2) is arranged in such a way that a longitudinal side thereof is directly adjacent to a building structure of the power station (1). A turbine house (3) comprises at least one wind passage (6) through which cooling air flows and/or is sucked beneath the heat exchanger elements (5).

Abstract: An exhaust steam pipeline for steam power plants includes a main steam line and at least two branch lines which are fluidly connected to respective condenser elements of the steam power plant and branch off from the main steam line at connection zones in spaced-apart relationship. The main steam line has a cross section, which decreases following each of the connection zones, and is constructed to ascend at an angle to a horizontal in flow direction of the exhaust steam.

Abstract: An exhaust steam pipeline for steam power plants includes a main steam line and at least two branch lines which are fluidly connected to respective condenser elements of the steam power plant and branch off from the main steam line at connection zones in spaced-apart relationship. The main steam line has a cross section, which decreases following each of the connection zones, and is constructed to ascend at an angle to a horizontal in flow direction of the exhaust steam.

Abstract: In a method of making finned tubes as components of air-cooled systems or condensers, a sheet metal strip of aluminum is first shaped into a waved finned structure with plural fins in parallel relationship and arched ends for connecting the fins, thereby defining crests on opposite ends of the finned structure. A fluxing agent of cesium-aluminum tetrafluoride is applied in lines onto the crests on at least one of the ends of the finned structure. The finned structure is then placed upon a broad side of a flat steel tube coated with a zinc/aluminum alloy. The finned structure and the flat tube are subsequently joined in a brazing furnace in the presence of an inert gas at a temperature between 370° C. and 470° C. to produce a unitary structure which is then allowed to cool down at room temperature.

Abstract: In a method of making finned tubes as components of air-cooled systems or condensers, a sheet metal strip of aluminum is first shaped into a waved finned structure with plural fins in parallel relationship and arched ends for connecting the fins, thereby defining crests on opposite ends of the finned structure. A fluxing agent of cesium-aluminum tetrafluoride is applied in lines onto the crests on at least one of the ends of the finned structure. The finned structure is then placed upon a broad side of a flat steel tube coated with a zinc/aluminum alloy. The finned structure and the flat tube are subsequently joined in a brazing furnace in the presence of an inert gas at a temperature between 370° C. and 470° C. to produce a unitary structure which is then allowed to cool down at room temperature.

Abstract: In a method for joining a steel tube with an aluminum rib, a zinc-aluminum alloy layer, having an aluminum content of 0.5% by wt. to 20% by wt., is applied to the surface of the steel tube or the aluminum rib, and then a fluxing agent in the form of cesium-aluminum tetrafluoride is applied between the steel tube and the aluminum rib at room temperature before or during the mechanical contact of the aluminum rib with the steel tube. The steel tube provided with the aluminum rib is then heated to a soldering temperature of between 370° C. and 470° C. and subjected to room temperature to cool down.

Abstract: In a method for joining a steel tube with an aluminum rib, a zinc-aluminum alloy layer, having an aluminum content of 0.5% by wt. to 20% by wt., is applied to the surface of the steel tube or the aluminum rib, and then a fluxing agent in the form of cesium-aluminum tetrafluoride is applied between the steel tube and the aluminum rib at room temperature before or during the mechanical contact of the aluminum rib with the steel tube. The steel tube provided with the aluminum rib is then heated to a soldering temperature of between 370° C. and 470° C. and subjected to room temperature to cool down.

Abstract: Apparatus for the condensation of steam, includes a substructure, a fan supported by the substructure and a plurality of self-supported tube bundles which are arranged in a roof-shaped manner in opposing relationship with respect to a vertical center longitudinal plane and mounted to the substructure above the fan, with each of the tube bundles having an upper tube plate and a lower tube plate. A steam distribution duct is fluidly connected to the upper ends of the tube bundles, whereas condensate collection pipes are fluidly connected to the lower ends of the tube bundles. The upper tube plates of opposite tube bundles so mutually support one another as to allow a limited pivotal movement of the tube bundles, and the condensate collection pipes are so positioned on the substructure as to be shiftable relative to the substructure in parallel relationship to the center longitudinal axis.

Abstract: A hybrid cooling plant includes at least one sector with a dry cooling part connected to a feed pump and including at least two heat exchangers which are connected in parallel, and with a wet cooling part located underneath the dry cooling part, wherein the dry cooling part and the wet cooling part are connected to each other by a closed connection. The highest locations of the heat exchangers are connected through a deaerating line to a vacuum pump and the heat exchangers are provided with evacuating and ventilating valves and level limit switches. The deaerating lines of the heat exchangers of a sector which operationally form a unit are connected to a deaerating vessel or reservoir.