Abstract: The invention relates to a wound heat exchanger having a core tube extending along a longitudinal axis in an axial direction and having a tube bundle, which has a plurality of tubes for conducting a first fluid, wherein the tubes are wound about the core tube in a plurality of windings, the tubes being arranged in a radial direction perpendicular to the axial direction in a plurality of tube layers, adjacent windings of at least one tube layer having different axial distances in the axial direction and/or tube layers adjacent in the radial direction having different radial distances from each other in a cross-sectional plane perpendicular to the longitudinal axis. The invention further relates to a method for producing a wound heat exchanger and to a method for transferring heat between a first fluid and a second fluid by means of the heat exchanger.

Abstract: The invention relates to a method for producing a wound heat exchanger which has a core tube and a tube bundle, said tube bundle having a plurality of tubes wound about the core tube in a helical manner for conducting a first fluid. The course of the tubes of the tube bundle from a first tube base of the heat exchanger to a second tube base of the heat exchanger about the core tube is automatically calculated, and at least one position at which a respective tube runs according to the calculated course is marked by means of at least one light beam, wherein the respective tube is installed according to the marking.

Abstract: The invention relates to a wound heat exchanger having a core tube extending along a longitudinal axis in an axial direction and having a tube bundle, which has a plurality of tubes for conducting a first fluid, wherein the tubes are wound about the core tube in a plurality of windings, the tubes being arranged in a radial direction perpendicular to the axial direction in a plurality of tube layers, adjacent windings of at least one tube layer having different axial distances in the axial direction and/or tube layers adjacent in the radial direction having different radial distances from each other in a cross-sectional plane perpendicular to the longitudinal axis. The invention further relates to a method for producing a wound heat exchanger and to a method for transferring heat between a first fluid and a second fluid by means of the heat exchanger.

Abstract: The invention relates to a method for producing a wound heat exchanger which has a core tube and a tube bundle, said tube bundle having a plurality of tubes wound about the core tube in a helical manner for conducting a first fluid. The course of the tubes of the tube bundle from a first tube base of the heat exchanger to a second tube base of the heat exchanger about the core tube is automatically calculated, and at least one position at which a respective tube runs according to the calculated course is marked by means of at least one light beam, wherein the respective tube is installed according to the marking.

Abstract: The present invention relates to a method for connecting tubes (125) of a tube bundle heat exchanger to a tube plate (130) of the tube bundle heat exchanger, wherein the tubes (125) are cohesively connected to the tube plate (130) by laser welding, during the course of which a laser beam (211) is generated and is focused on a location to be welded in a connecting region (250) between tube (125) and tube plate (130), wherein the laser beam (211) is moved so as to perform a first movement over the connecting region (250) and a second movement which is superposed on the first movement and which differs from the first movement, and wherein, by means of the second movement, melt bath dynamics are influenced in targeted fashion and/or a vapour capillary that forms is modified in targeted fashion.

Abstract: The invention relates to a heat exchanger having a core tube onto which tubes forming a tube bundle are coiled, a pre-distributor having a liquid space for receiving a liquid phase (F), a centrally arranged feed for introducing the liquid phase into the liquid space and a main distributor which has a multiplicity of distributor arms for distributing the liquid phase (F) over the tube bundle, wherein the distributor arms via at least one flow path proceeding outside the core tube are in fluidic connection with the liquid space, wherein the core tube is arranged or sealed off with regard to the liquid space in such a way that the liquid phase from the liquid space is not introduceable via the core tube into the distributor arms of the main distributor.

Abstract: The invention relates to a heat exchanger for indirect heat exchange between a first medium and a second medium, comprising: a shell, which surrounds a shell space of the heat exchanger, a core tube, which extends along a longitudinal axis and onto which a plurality of tubes for receiving the first medium are coiled. The tubes form a bundle and a number of end portions of the tubes are brought together and connected to a tubesheet fixed on the shell. An annular channel is provided for receiving the second medium (M2). An inlet nozzle is provided for introducing the second medium into the annular channel (100). A plurality of distributor arms in flow connection with the annular channel are provided for distributions.

Abstract: A heat exchanger for indirect heat exchange between a first fluid and a second fluid, with a shell surrounding a shell space for receiving the first fluid, a tube bundle having a plurality of tubes arranged in the shell space for receiving the second fluid, the tubes arranged in a number of tube layers, and a jacket arranged in the shell space and enclosing an outermost tube layer in the radial direction of the tube bundle. An intermediate space is formed between the tube bundle and the jacket surrounds the tube bundle. At least one elastic element is arranged with a first region between neighboring tube portions in the outermost tube layer and a second region that protrudes out of the outermost tube layer and abuts an inner side of the jacket (3) that is facing the tube bundle or connects the elastic element to the jacket.

Abstract: A heat exchanger for indirect heat exchange between a first fluid and a second fluid, with a shell surrounding a shell space for receiving the first fluid, a tube bundle having a plurality of tubes arranged in the shell space for receiving the second fluid, the tubes arranged in a number of tube layers, and a jacket arranged in the shell space and enclosing an outermost tube layer in the radial direction of the tube bundle. An intermediate space is formed between the tube bundle and the jacket surrounds the tube bundle. At least one elastic element is arranged with a first region between neighboring tube portions in the outermost tube layer and a second region that protrudes out of the outermost tube layer and abuts an inner side of the jacket that is facing the tube bundle or connects the elastic element to the jacket.

Abstract: A heat exchanger, a method for maintaining, for producing and for operating a heat exchanger, a power plant, and a method for generating electric power. The heat exchanger has a pipe system divided into a first pipe bundle and a second, replaceable pipe bundle. The first pipe bundle operates for a first time period in a first temperature range, and the second pipe bundle operates for a second time period shorter than the first time period and in a second temperature range higher than the first temperature range. The first temperature range has a maximum temperature lower than the temperature at which creep of the material of the first pipe bundle begins, and the second temperature range has a maximum temperature as high or higher than the temperature at which creep of the material of the second pipe bundle begins.

Abstract: A coiled heat exchanger having a plurality of tubes which are wound around a core tube is disclosed. The coiled heat exchanger having a casing which delimits an outer space around the tubes, and wherein a first and a second component of the coiled heat exchanger are composed of different materials.

Abstract: A coiled heat exchanger having a plurality of tubes which are wound around a core tube is disclosed. The coiled heat exchanger having a casing which delimits an outer space around the tubes, and wherein a first and a second component of the coiled heat exchanger are composed of different materials.