Abstract: A heat exchanger has a container with an outer mantle and pipes positioned in the container for conveying a heat-receiving medium through the container. The heat-transferring medium flows exterior to the pipes in counter flow to the heat-receiving medium in the pipes. A common inlet tube is connected to the container and communicates with the pipes for introducing the heat-receiving medium. A common outlet tube is connected to the container and communicates with the pipes for removing the heat-receiving medium from the pipes. The pipes extend meander-shaped within the container. The common inlet tube penetrates the outer mantle on opposite sides and has an inflow end and a remote end. The inflow end is pressure-tightly connected to the outer mantle. The common outlet tube penetrates the outer mantle on opposite sides and has an outflow end and a remote end. The outflow end is pressure-tightly connected to the outer mantle.

Abstract: In a method of manufacturing a plate heat exchanger individual plates are connected to pairs such that the individual plates are parallel to and spaced from one another by edge portions with a common edge. The pairs are combined to a plate stack such that the common edges are parallel. A sealing strip, having a slotted end face with parallel slots, is positioned at the end of the plate stack such that the common edges are received in the slots and the edge portions abut the slotted end face and such that the end of the plate stack projects slightly past the outer surface of the sealing strip perpendicular to the slotted end face. The sealing strip is welded to the common edges by using at least a portion of the material of the plate stack end projecting past the outer surface. The edge portions are welded to the outer surface of the sealing strip by using exclusively the material of the plate stack projecting past the outer surface.

Abstract: In a method for degassing make-up water for a water-steam-circuit of a steam turbine process make-up water is introduced at a location of introduction into an exhaust steam pipe of the steam turbine so as to form a water film. A connector of the exhaust steam pipe is positioned in the vicinity of the location of introduction and connected to an evacuating device. The gases released from the make-up water are removed via the connector and the evacuating device. The device for performing the method has an exhaust steam pipe with an inner wall and free ends. At least one overflow trough including a deflecting shield is connected to the inner wall of the exhaust steam pipe. Closure plates are connected to the free ends of the exhaust steam pipe. The deflecting shield, the closure plates, the inner wall, and the overflow trough delimit a chamber having an opening toward the interior of the exhaust steam pipe only at the lower free edge of the deflecting shield.

Abstract: A device for increasing efficiency of a power plant operated by burning fossil fuel has a boiler for heating a process medium. An inlet line is connected to the boiler for feeding a first process gas in the form of combustion air into the boiler. An outlet line is connected to the boiler removing a second process gas in the form of flue gas from the steam generator. A heat exchanger for heating the combustion air by regaining some of the heat contained in the flue gas is provided. At least one device for preheating the combustion air is connected upstream of the heat exchanger. The device for preheating the combustion air preheats the combustion air with heat energy contained in the process medium which is at a low pressure level. At least one device for transferring a portion of the heat energy, introduced into the combustion air by preheating, from at least one of the process gases to the process medium at a high pressure level is provided.

Abstract: The device for cooling gases and optionally drying solid particles within the gases has a vertically arranged reactor housing. The gases pass through the reactor housing in the vertical direction. At least one inlet line is connected with its mouth to the reactor housing for introducing the gases in the vertical direction into the reactor housing. At least one nozzle, arranged within the area of the mouth, for introducing a liquid and optionally solid particles into the gases is provided. The mouth is in the form of a shock diffusor. At least one insert for generating a leading edge vortex system is arranged within the vicinity of the shock diffusor.