A heat exchanger (4) has fluid flow channels (6) with at least one heat exchanging surface (10) which has an undulating surface section for which the surface profile varies along a predetermined direction such that at a first edge (E1) the surface profile follows a first transverse wave (20), at a second edge (E)2 the surface profile follows a second transverse wave (22) and at an intermediate point I between the edges the surface profile follows a third transverse wave (24). The third transverse wave (24) has a different phase, frequency or amplitude to the first and second transverse waves so that chevron-shaped ridges and valleys are formed. This improves the mixing of fluid passing through the channel and hence the heat exchange efficiency.

A heat exchanger for an internal combustion engine transfers heat between fluids and includes a housing having a housing wall and a housing interior bordered at least in regions by the housing wall. The housing interior has a fluid inlet region for introducing a first fluid of the fluids into the housing interior and a fluid outlet region for discharging the first fluid out of the housing interior. The heat exchanger has at least two partition walls, which are at least substantially accommodated in the housing interior and connected to the housing wall of the housing at at least one connection region. The partition walls border at least regions of a fluid receiving chamber, through which a second fluid of the fluids can flow, in order to separate the fluids from one another. The partition walls are connected to one another at least at a joining region associated with the fluid inlet region and adjacent to the fluid receiving chamber in a main fluid flow direction of the first fluid. The partition walls also have a deformation, at least in a joining sub-region of the joining region spaced apart from the connection region, which is provided to at least reduce mechanical tension in the at least one connection region due to a temperature-dependent change in length of the joining region.

A flexible manifold adapted for use on a plate-fin heat exchanger core, the flexible manifold including a plurality of individual layers configured to be metallurgically joined to respective ones of a plurality of layers of the plate-fin heat exchanger core, and further including a first end with at least one port adapted to receive or discharge a medium, a second end distal from the first end, adapted to transfer the medium to or from the plurality of individual layers, a plurality of horizontal guide vanes defining the plurality of individual layers, and a plurality vertical members positioned within each of the individual layers. The flexible manifold is configured to be mechanically and thermally compliant, and can be metallurgically joined to the heat exchanger core by brazing or welding.

The main object of the invention is a heat exchanger including a first header plate of an inlet manifold, a second header plate of a distribution header and a heat exchange core bundle extending between the first header plate and the second header plate along a longitudinal direction, the heat exchange core bundle being defined by a shell and having a plurality of tubes arranged successively next to each other in a transverse direction, each tube being capable of cooperating with the header plates via through-holes formed in each plate. The shell has at least one longitudinal end with a straight edge configured to be in flat surface contact with at least one header plate in a contact area, the surface contact occurring mainly in a plane perpendicular to the longitudinal direction.

Exemplary embodiments are directed to swimming pool heat exchangers including a housing and one or more tube assemblies disposed within the housing. Each of the tube assemblies includes an elongated titanium tube and at least one fin welded to an outer surface of the elongated titanium tube. The elongated titanium tube and the at least one welded fin allow for corrosion resistance to swimming pool water while simultaneously allowing for improved heat transfer from the heat exchanger to the swimming pool water.

The invention relates to a flat tube heat exchanger, in particular to a high-temperature flat tube heat exchanger for gaseous media, comprising a closed housing (5) having a tube bundle space (50) and a tube bundle, arranged in the tube bundle space (50) of the housing (5), comprising multiple flat tubes (2), there being arranged, in the flat tubes (2) and in the tube bundle space (50) between the flat tubes (2), corrugated strips (3, 6) having peaks (30, 60) and troughs (31, 61) extending in the longitudinal direction of the flat tubes (2), wherein the peaks (30, 60) and troughs (31, 61) respectively bear internally and externally against flat sides (200) of the flat tubes (2), and wherein there is provided a device for externally applying a surface pressure to the housing (5), at least in the region of the tube bundle space (50), this pressure being higher than a pressure (p1, p2) of the media guided in the flat tubes (2) or around the flat tubes (2).

A heat exchanger may include a tubular housing, a flange ring, two bases, and heat exchanger tubes that run through the housing and are each held in the bases at a longitudinal end side. A first flow channel may be formed in the heat exchanger tubes, and a second flow channel may be formed between the heat exchanger tubes and the housing. The housing may be formed from two one-piece and pot-shaped housing parts. Each housing part may have a housing section, a flange ring section, and a base. The two housing parts may be connectable to one another via the two flange ring sections.

The invention relates to a heat exchange device characterized by a particular configuration of the liquid inlet or outlet manifold in which it incorporates a baffle formed from the shell itself. This configuration allows not only suitably orient the inflow into regions of the tube bundle of the exchanger where convection must be more intense, but also allows generating a flow suitable for reaching all the regions having a higher convective heat transfer requirement. Configuring a baffle from the shell prevents incorporating and manufacturing specific additional parts, as well as the additional operations required for their configuration and attachment to the heat exchanger.

An apparatus is provided for processing reusable fuel comprising a first-type cyclone cooler having a first configuration. The apparatus also provides one or more second-type cyclone coolers, wherein each one or more second-type cyclone coolers has a substantially identical second configuration to respective other one or more second-type cyclone coolers, wherein the second configuration is different than the first configuration. The apparatus may also provide an air cooled heat exchanger, a coil condenser and one or more bubblers. The first-type cyclone cooler and the one or more second-type cyclone coolers are connected. One of the one or more second-type cyclone coolers is connected to the air cooled heat exchanger. The air cooled heat exchanger is connected to the coil condenser. The coil condenser is connected to the one or more bubblers.

A heat exchanger has a first plurality of fluid passages with an inlet manifold communicating into a core portion, and then an outlet manifold. A second plurality of fluid passages has an inlet manifold communicating into a core portion, and then into an outlet manifold and the core portions of both the first and second pluralities of fluid passages having smaller cross-sectional areas than cross-sectional areas of the inlet and outlet manifolds. A gas turbine engine and a method of forming a heat exchanger are also disclosed.