A heat exchanger has flow channels for coolants, which flow channels include turbulence elements having a different flow resistance depending on a direction of a flow, wherein the flow can be passed through the heat exchanger in different directions. As part of a method of operating the heat exchanger, the heat exchanger is flowed through in different directions using a pump that can be operated in different directions.

A shell-and-tube heat exchanger and an air conditioning system. The shell-and-tube heat exchanger includes: a shell provided with a liquid inlet and an vapor outlet, the vapor outlet being disposed at an top portion of the shell; and a heat exchange tube bundle disposed in the shell in an axial direction of the shell; wherein the heat exchange tube bundle includes: a plurality of first heat exchange tubes located at an upper portion, the first heat exchange tubes having a first spacing therebetween; and a plurality of second heat exchange tubes located at a lower portion, the second heat exchange tubes having a second spacing therebetween; the first spacing is different from the second spacing.

A shell-and-tube heat exchanger and an air conditioning system. The shell-and-tube heat exchanger includes: a shell provided with a liquid inlet and an vapor outlet, the vapor outlet being disposed at an top portion of the shell; and a heat exchange tube bundle disposed in the shell in an axial direction of the shell; wherein the heat exchange tube bundle includes: a plurality of first heat exchange tubes located at an upper portion, the first heat exchange tubes having a first spacing therebetween; and a plurality of second heat exchange tubes located at a lower portion, the second heat exchange tubes having a second spacing therebetween; the first spacing is different from the second spacing.

A baffle for a thermal transfer device can include a body having a multiple first apertures that traverse therethrough, where each first aperture has a first outer perimeter that includes a first base shape and at least one first protrusion extending from the first base shape. Each of the first apertures is configured to receive a tube. The first base shape of each first aperture has a first shape and a first size that is configured to be substantially the same as the first shape and the first size of an end of a tube.

A heat exchanger comprises a jacket element and an insert element, the jacket element forming a fluid channel for a fluid to be tempered, a flowable medium or a fluid mixture. The insert element is arranged in the fluid channel. The insert element contains a plurality of web elements which are connected to the jacket element at different locations. At least some of the web elements contain web element passages which are in fluid-conducting connection with the jacket element so that, in the operating state, a heat transfer fluid which is fed to the jacket element can flow through the web elements, wherein the jacket element contains a plurality of chambers for a heat transfer fluid, wherein at least one of the chambers is disposed with a plurality of inlet openings and outlet openings for the heat transfer fluid.

Disclosed is a swirl generator for an evaporator, having: a body that extends along a body-center axis between opposing inlet and outlet ends, and includes: a fluid inlet at the inlet end; an outer surface that, at that the outlet end, defines an outlet region with a curved outer boundary forming a convex curve that extends radially inward from an outer diameter surface of the body to an outer axial surface of the body; a center passage formed within the body that extends from the inlet towards the outlet along the body-center axis; and a swirl passage formed at the outlet end of the body, the swirl passage extending between the center passage and the curved outer boundary along a swirl passage axis, whereby a fluid entering from the inlet exits the body at the curved outer boundary, the swirl passage axis forming an acute angle with the body-center axis.

Disclosed is a swirl generator for an evaporator, having: a body that extends along a body-center axis between opposing inlet and outlet ends, and includes: a fluid inlet at the inlet end; an outer surface that, at that the outlet end, defines an outlet region with a curved outer boundary forming a convex curve that extends radially inward from an outer diameter surface of the body to an outer axial surface of the body; a center passage formed within the body that extends from the inlet towards the outlet along the body-center axis; and a swirl passage formed at the outlet end of the body, the swirl passage extending between the center passage and the curved outer boundary along a swirl passage axis, whereby a fluid entering from the inlet exits the body at the curved outer boundary, the swirl passage axis forming an acute angle with the body-center axis.

A heat exchanger including a shell having a longitudinal axis, a plurality of baffles, such as elliptical sector-shaped baffles, each mounted in the shell at a helix angle H.sub.B to guide a fluid flow into a helical pattern through the shell. Each of the plurality of baffles includes an outer circumferential edge, a proximal radial edge, a distal radial edge, a proximal side, a distal side, and a plurality of spaced apart holes that are traversed by a plurality of axially extending tubes. Each of the first plurality of seal strips is disposed from a proximal of the plurality of baffles to a distal of the plurality of baffles.

The present discloses a gas-gas high-temperature heat exchanger, including a shell (12), a tube sheet (5), a low-temperature gas inlet pipeline (6) and an outlet pipeline (7), and a high temperature gas outlet (8), the tube is divided into a first heat transfer zone (1) and a second heat transfer zone (2), a low temperature gas (4) flows in the tube, the tube includes a insert component (9) and an outer fin (10); a heat transfer tube in the second heat transfer zone (2) has a sleeve structure, a high-temperature gas (3) flows in the core tube (13), the low temperature gas (4) flows in an annular region between the core tube (13) and an outer tube (14), the high-temperature gas (3) flows out of the core tube (13) and flows into the shell-side area of the second heat transfer zone (2) again.

The present discloses a gas-gas high-temperature heat exchanger, including a shell (12), a tube sheet (5), a low-temperature gas inlet pipeline (6) and an outlet pipeline (7), and a high temperature gas outlet (8), the tube is divided into a first heat transfer zone (1) and a second heat transfer zone (2), a low temperature gas (4) flows in the tube, the tube includes a insert component (9) and an outer fin (10); a heat transfer tube in the second heat transfer zone (2) has a sleeve structure, a high-temperature gas (3) flows in the core tube (13), the low temperature gas (4) flows in an annular region between the core tube (13) and an outer tube (14), the high-temperature gas (3) flows out of the core tube (13) and flows into the shell-side area of the second heat transfer zone (2) again.