For a process for producing a motor vehicle interior trim material including or consisting at least essentially of a needlefelt which includes a fibre blend including 25-35 wt % of polyamide (PA) fibres and 65-75 wt % of polyester (PES) fibres, preferably without other, bonding fibres, and is consolidated mechanically by needling and via adhesive bonding, it shall be achieved to provide a needlefelt material, in particular a motor vehicle interior trim material, which has a visually appealing surface finish even after thermoforming in the temperature range between 150 C. and 250 C.

A module for constructing therefrom a heat exchanger is provided. The module includes two manifolds and a plurality of parallely arranged mats spanning between the manifolds. Each mat includes a plurality of heat exchange tubes arranged so as to define a plane, the heat exchange tubes being in fluid communication with the manifolds and spanning therebetween. Each of the manifolds includes selectively sealable end openings formed in facing ends thereof and defining a longitudinal flow path substantially perpendicular to the tubes and parallel with the planes defined thereby. Each of the manifolds further includes selectively sealable side openings on facing sides thereof and each defining a lateral flow path substantially perpendicular to the longitudinal flow path and to the planes defined by the tubes.

Methods are disclosed for fabricating heat exchangers and Heat Exchanger (HX) tubes, as are heat exchangers fabricated in accordance with such methods. In embodiments, the method includes the steps or processes of obtaining a Non-Equilibrium Alloy (NEA) feedstock powder comprised of an alloy matrix throughout which at least one minority constituent is dispersed. The first minority constituent precipitates from the alloy matrix when the NEA feedstock powder is exposed to temperatures exceeding a critical temperature threshold (T.sub.CRITICAL) for a predetermined time period. A cold spray process is carried-out to at least partially form the HX tubes from the NEA feedstock powder; and the HX tubes are subsequently installed in the heat exchanger. The HX tubes are exposed to a maximum temperature (T.sub.SPRAY_MAX) during the cold spray process, which is maintained below T.sub.CRITICAL to substantially preserve the non-equilibrium state of the NEA feedstock powder through cold spray deposition.

The present disclosure generally provides an improved punctured type main header of an internal combustion engine CAC. In one embodiment, the punctured type main header includes a body having multiple mounting holes disposed in the length direction of the main header, wherein each mounting hole has a sidewall. The body includes an aluminum tube coupled to each mounting hole, a first feature layer formed on the sidewall of each mounting hole, wherein the first feature layer has gas bubbles formed therein, a second feature layer formed on the first feature layer, the second feature layer is a high performance material (HPM) produced from raw ceramic powders of Y.sub.2O.sub.3, Al.sub.2O.sub.3, and ZrO.sub.2, wherein Y.sub.2O.sub.3 is in a range between about 45 mol. % and about 100 mol. %, ZrO.sub.2 is in a range from about 0 mol. % and about 55 mol. %, and Al.sub.2O.sub.3 is in a range from about 0 mol. % to about 10 mol. %. The body further includes a solder coating formed on the second feature layer.

A method for producing a heat exchanger may include: a) applying an adhesive layer to an outer side of heat exchanger tubes by laminating at least one of an adhesive sheet and an adhesive film; b) expanding the tubes on a longitudinal end side in a connecting region via an expanding mandrel; c) arranging the tubes parallel to one another such that the tubes lie flat against one another via the connecting region; and d) heating the adhesive layer at least in the connecting region of the tubes to adhesively bond the tubes to one another via the connecting region.

To provide a structure of a heat exchanger core that enables the outer periphery of an stacked body 8 including an assembly of flat tubes to be held in a previously fastened state and is excellent in mass-productivity, external frame portions of a pair of frame bodies are fitted onto both ends of a bulging portion of the stacked body of the flat tubes, and, in the state where the stacked body is restrained, a casing is additionally fitted onto the outer periphery of the stacked body.

A heat exchanger for an oxygenator comprises multiple tube sections, each having a longitudinal tube axis, wherein the tube sections are disposed as a bundle having a longitudinal bundle axis, and the tube sections are connected to each other in at least one connecting section of the bundle by joining by way of chemical and/or physical bonded joints. A method for producing the heat exchanger is also provided.

A method for producing a heat exchanger having tubes, which may be fixed on longitudinal ends in associated openings of a tube plate of a collector, may first include applying an adhesive layer to an outside of each tube by lamination of one of an adhesive layer and an adhesive film. The method may then include inserting each tube with a longitudinal end side tube wall portion into a respective one of the associated openings on the tube plate, wherein the tube wall portion may be bent over in such a manner that it is placed against non-parallel walls of the respective one of the associated openings. The method may further include heating the adhesive layer for adhesive bonding of the tube wall portion of each tube to the non-parallel walls of the respective one of the associated openings.

In a heat exchanger including a header tank which includes a header plate through which end portions of a number of flat tubes placed in parallel are inserted, and a header body fitted to the header plate, the header plate and the header body are temporarily assembled easily and accurately, and joined more accurately by brazing. The header body is formed in a gutter-like shape, and positioned with both ends thereof on an opening side in contact with both ends of a major axis on an opening end surface of each flat tube inserted into the header plate.

Header for a heat exchanger and resulting heat exchanger are disclosed. The tubular header is of the type which can receive at least one connecting flange (5, 6) with an internal fluid passage (25), and is composed of: a header plate (8) with a longitudinally open wall, provided with slots intended to receive parallel fluid flow tubes; and a cover (9) which, after assembly, closes a longitudinal opening of said header plate, the wall of this cover having at least one external collar (28) delimiting a hole for the flow of fluid (27), said connecting flange (5, 6) being attached to said cover (9) and being configured in such a way that it can be crimped onto the header (3, 4), thereby bringing the internal passage (25) into fluid communication with the hole (27) in said collar. Advantageously, said collar (28) has a wall thickness (33) which is reduced relative to that of said cover (9) from which the collar extends, thereby maximizing the cross section of said hole (27) for the flow of fluid toward the internal passage (25) of said flange.