A heat exchanger (10) of heat pipe configuration for transferring heat between a first and second process streams via a heat transfer fluid comprises: at least one first process stream passage (19); at least one second process stream passage (29); and a shell (11) enclosing the first and second process stream passages (19, 29) within a volume (55). The volume (55), as a result of a heat transfer process, is fully filled with both vapour and liquid phases of the heat transfer fluid. The first and second process stream passages (19, 29) are spaced by a disengagement zone (50) enabling gravitational separation of said vapour and liquid phases and limiting accumulation of liquid phase heat transfer fluid about the first process stream passage(s) (19). Such heat exchangers can be used, among other applications, to replace a flash cooling stage in a Bayer process plant.

A tubular heat exchanger having a plurality of shell-side and tube-side fluid passes. The heat exchanger includes an elongated cylindrical shell, a head coupled thereto, and a tube bundle positioned in the shell and supported in part by a tube sheet attached to the head. The shell of the heat exchanger may include a plurality of vertically stacked shell-side compartments each defining a shell-side pass. The head of the heat exchanger may have a plurality of tube-side compartments each defining a tube-side pass. A tube-side fluid enters the head and flows through the tube bundle progressively through a series of tube-side passes to heat the fluid with a shell-side fluid. Each shell-side pass contains multiple tube-side passes. The tube-side fluid may perform a plurality of horizontally arranged tube-side fluid passes in each vertically stacked shell-side fluid pass before cascading vertically to a next shell-side fluid pass.

A heat exchanger, for example a shell and tube flooded evaporator, has a refrigerant distributor that is positioned at an angle between the bottom of the shell and the sides of the shell, and includes an inlet that is welded to an inlet piping, where the inlet and inlet piping are in fluid communication with the refrigerant distributor, and are in a generally corresponding position orientation. Tubes of a tube bundles may extend proximate the bottom of the shell.

A thermal energy storage is provided comprising a housing, a thermal energy storage structure arranged within the housing, the thermal energy storage structure comprising thermal energy storage elements and a plurality of dividing elements, the plurality of dividing elements being arranged such that the thermal energy storage elements are divided into a plurality of layers, a fluid inlet, the fluid inlet being in fluid communication with the housing and adapted to receive a working fluid and provide a flow of working fluid towards the housing, and a convection reducing structure arranged adjacent the thermal energy storage structure at a side of the thermal energy storage structure that faces the fluid inlet. Furthermore, a method of storing thermal energy and a steam power plant for producing electrical energy are described.

A cooling device includes a cooler disposed inside a shell, an inlet nozzle that is configured to feed a fluid into the shell, an outlet nozzle that is configured to feed the fluid passing through the cooler so as to flow outward, and a guide member that is configured to change a flowing direction of the fluid. The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid, and an uneven portion formed in at least a portion of a peripheral edge portion of the collision surface.

The invention relates to a heat exchanger for indirect heat exchange between a first and second medium having: a shell, extending along a longitudinal axis and surrounding a shell space for receiving the first medium, and a plurality of tubes coiled helically onto a core tube which extends along the longitudinal axis in the shell space forming a tube bundle. The tube bundle comprises a number of tube layers lying one on top of the other in the radial direction. The second medium is conducted within the tubes to exchange heat indirectly with the first medium. The at least one distributor arm distributes a liquid phase of the first medium to an upper side of the tube bundle. The at least one distributor arm has, opposite from the upper side, a bottom with through-openings, so that the liquid phase can be passed to the upper side of the tube bundle. From an underside of the bottom of the at least one distributor arm, and at least one directing element projects in the direction of the upper side of the tube bundle and extends along the longitudinal axis toward the upper side of the tube bundle. The at least one directing element extends in a circumferential direction of the tube bundle over at least half the width of the bottom of the at least one distributor arm and/or the at least one directing element projects along the longitudinal axis into a gap of the tube bundle arranged between two tube layers of the tube bundle.

A U-tube heat exchanger wherein a tube support plate divides the interior of a tube-exterior fluid chamber into a curved-tube chamber on a second end side including curved-tube sections of the U-tubes, and a chamber on a first end side. A second partition wall divides the interior of the chamber on the first end side inside the tube-exterior fluid chamber into a first straight-tube chamber including inlet-side straight-tube sections of the U-tubes, and a second straight-tube chamber including outlet-side straight-tube sections of the U-tubes. An opening penetrating from the first straight-tube chamber into the second straight-tube chamber is formed in the second partition wall. First passage holes, which penetrate from the first straight-tube chamber into the curved-tube chamber, and second passage holes, which penetrate from the second straight-tube chamber into the curved-tube chamber, are formed in the tube support plate.

A liner tube for an inlet channel of a plate heat exchanger may include an open front side for supplying a refrigerant mass flow, an at least partially closed rear side, and at least two bag-like chambers running in a longitudinal direction of the liner tube. Each chamber may communicate with the open front side, and may have openings at chamber-dependent different positions for distributing the refrigerant mass flow in plate stacks of the plate heat exchanger.

The invention relates to a heat exchanger for indirect heat exchange between a first medium and a second medium, comprising a shell surrounding a shell space which extends along a longitudinal axis. The shell space serves for accommodating the first medium. A tube bundle is arranged in the shell space having multiple tubes for accommodating the second medium. The tubes are helically coiled in multiple tube layers onto a core tube. The tube bundle has a multiplicity of inner tube layers, surrounding the core tube, and a multiplicity of outer tube layers, surrounding the inner tube layers. The heat exchanger discharges a part of a gaseous phase out of the shell space from the region of the inner tube layers via a gas discharge device, and/or supplies a gaseous phase into the shell space in the region of the outer tube layers via a gas supply device.

A heat exchanger (10) of heat pipe configuration for transferring heat between a first and second process streams via a heat transfer fluid comprises: at least one first process stream passage (19); at least one second process stream passage (29); and a shell (11) enclosing the first and second process stream passages (19, 29) within a volume (55). The volume (55), as a result of a heat transfer process, is fully filled with both vapour and liquid phases of the heat transfer fluid. The first and second process stream passages (19, 29) are spaced by a disengagement zone (50) enabling gravitational separation of said vapour and liquid phases and limiting accumulation of liquid phase heat transfer fluid about the first process stream passage(s) (19). Such heat exchangers can be used, among other applications, to replace a flash cooling stage in a Bayer process plant.