Linde Aktiengesellschaft

Linde Gmbh

Reinhold Hölzl

Jörg Dietrich

Axel Lehmacher

Alexander Woitalka

Manfred Steinbauer

Stefan Lochner

Christiane Kerber

Thomas Hecht

Manfred Schönberger

Ralph Spöri

Georg Wimmer

Pascal Freko

Ingo Thomas

Adriana Stefanescu

Jürgen Spreeman

Thomas Englert

Sven Schauder

Matthias Grundwürmer

Josef-Andreas Pöllmann

Jürgen Spreemann

Kati Schatz

Rolf Dahmen

Provided is a connection element comprising a tubular first part with a first ring-shaped connection face for connection with a highly heat resistant steel pipe and a tubular second part with a second ring-shaped connection face for connection with a first ferritic steel pipe; wherein the first part is of a corrosion resistant steel material and wherein the second part is of a ferritic steel material; wherein the first and second parts are in one-piece and formed such that a passage between the first and second ring-shaped connection faces is formed; and wherein the first and second parts are produced by an additive manufacturing process. Further provided are a pipe arrangement and a heat exchanger.

Connection element

A transition component for connecting components of a chemical or process engineering plant, wherein the transition component has a first material piece made from a first material and second material piece made from a second material, wherein the first material and the second material cannot be connected to each other by fusion welding, the first material piece and the second material piece forming a hollow body, the transition component having a radially interior inner side and a radially exterior outer side, the first material piece being connected to the second material piece by at least one intermediate material layer and the transition component having at least one insulation layer, wherein the insulation layer extends at least in part over the inner side and/or the outer side of the transition component, and a core-in-shell heat exchanger and a cold box having the transition component.

Transition component having insulation

A method for operating a heat exchanger, in which a first operating mode is carried out in first time periods, and a second operating mode is carried out in second time periods that alternate with the first time periods; in the first operating mode a first fluid flow is formed at a first temperature, is fed into the heat exchanger in a first region at the first temperature, and is partially or completely cooled in the heat exchanger; in the first operating mode a second fluid flow is formed at a second temperature, is fed into the heat exchanger in a second region at the second temperature, and is partially or completely heated in the heat exchanger; and in the second operating mode the feeding of the first fluid flow and of the second fluid flow into the heat exchanger is partially or completely halted.

Method for operating a heat exchanger, arrangement with a heat exchanger, and system with a corresponding arrangement

The invention relates to a method for determining the state of a heat exchanger device () that comprises means for transferring heat with the aid of at least one process stream. A thermohydraulic simulation of the at least one process stream through at least one passage () in the heat exchanger device () is carried out in order to determine temperature and/or heat transfer coefficient profiles of the means for transferring heat.

Method for determining a state of a heat exchanger device

The invention relates to a plate heat exchangerwith at least two cuboidal modules. The two modulesandare cuboidal and are each closed to the outside by cover sheets. The two modulesandare arranged such that in each case, cover sheetsandof the same size are directly adjacent. On the contact surfaces, sectionsare welded that prevent movement of the two modulesperpendicular to the contact surfaceseither alone or with an additional formed part

Plate heat exchanger with several modules connected by sections

A method for determining a stiffness of a tube bundle heat exchanger. The heat exchanger has a core tube and a plurality of coil tubes coiled around the core tube to form a tube bundle having a plurality of coil layers at a respective layer coiling angle. The method determines a geometric strength parameter for a coil layer, the strength parameter being an area ratio of a coil-tube cross-sectional area to a cell cross-sectional area resulting from the axial spacing of the coil tubes and an outer diameter of the coil tubes. The area ratio is corrected by a correction factor taking the orientation of the coil tubes of the coil layer in relation to the force of gravity acting on the coil tubes into consideration. The stiffness of the respective coil layer is determined from the corrected area ratio and a modulus of elasticity of the coil-tube material.

Method for determining a strength of a tube bundle heat exchanger, and production method

A method for producing a plate heat exchanger with at least two heat exchanger blocks which are produced separately from one another in a soldering furnace Each heat exchanger block has multiple separating sheets arranged parallel to one another and which form a plurality of beat exchanger passages for fluids involved in a heat exchange process. At least one support provided with solder is heated in order to melt the solder, the support is arranged between opposing outer surfaces of the heat exchanger blocks to be connected which are placed one on top of the other or adjacently, the support(s) thus being fixed between the opposing outer surfaces. After the solder is hardened, a bonded and heat-conductive connection is produced between the heat exchanger blocks. Sheets or wire arrangement can be used as the supports.

Method for producing a plate heat exchanger with multiple heat exchanger blocks connected by solder-coated supports

The invention describes a plate heat exchangercomprising two modulesand. The two modulesandare cuboidal and in each case are closed off to the outside by cover sheets. The two modulesandare arranged such that cover sheetsandof the same size are directly adjacent. The two cover sheetsandform the contact surface between the two modulesandof the plate heat exchanger. The two contact surfacesandare joined to one another via a suitable adhesive.

Plate heat exchanger with several modules connected by sheet-metal strips

A process for determining the strength of a plate-type heat exchanger includes computing the temperature stresses of the plate-type heat exchanger within the heat exchanger during its operation by a three-dimensional numerical simulation. Based on the computed temperature stresses, the strength of the plate-type heat exchanger is determined. The process for producing a plate-type heat exchanger with separating plates and profiles of metal uses this strength determination for establishing one or more mechanical parameters of the heat exchanger. The heat exchanger is manufactured with the one or more mechanical parameters.

Processes for determining the strength of a plate-type exchanger, for producing a plate-type heat exchanger, and for producing a process engineering system

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Geretsried, Germany

Reinhold Hölzl