A heat exchange conduit includes a body having a first portion including a first flow channel and a second portion including a second flow channel. A cross-section of the heat exchange conduit varies over a length of the heat exchange conduit.

Apparatus and methods for additively manufacturing microtube heat exchangers are disclosed herein. A heat exchanger header is additively manufactured with high density microtube arrays to achieve an integrated structure achieving values of heat transfer effectiveness E.sub.ff up to ninety percent and values of transfer surface area densities up to 20,000 m.sup.2/m.sup.3. The heat exchanger header can be printed with a high density microtube array to separate different types of fluids or liquids into different microtubes and to form a high quality seal. Additionally, microtubes and/or microtube arrays can be additively manufactured to be curved or to have pleats; and microtube lattice arrays can be compactly positioned within hollow support structures.

A heat exchanger for a motor vehicle includes first fluid lines of a flexible material, through which a first fluid (F.sub.1) flows, and a holding structure with holding elements. The first fluid lines and the holding elements form a woven structure. The holding elements are in a thread-like manner and extend along a second direction of extension (R.sub.2), at right angles to a first direction of extension (R.sub.1). The heat exchanger, through which a second fluid (F.sub.2) flows, is separated from the first fluid (F.sub.1). The woven structure includes a first and second partial woven structures and are formed separately. The first partial woven structure and the second partial structure are arranged so that the second fluid (F.sub.2) flows through the woven structure space, formed between the two partial woven structures. The first and the second partial woven structures are at an angle relative to one another.

A heat exchanger may include a plurality of refrigerant tubes through which a refrigerant flows and a plurality of fins disposed between adjacent refrigerant tubes of the plurality of refrigerant tubes to transfer heat. Each of the plurality of fins may include an inner portion located to overlap the plurality of refrigerant tubes in a vertical direction, and an outer portion located so as not to overlap the plurality of refrigerant tubes in the vertical direction, and a lower end of at least a portion of the outer portion may be located higher than a lower end of the inner portion.

Disclosed are exemplary embodiments of heat exchangers that may be capable of cooling multiple process loops with a single primary or shell-side fluid and/or have combined liquid-to-liquid and liquid-to-air heat exchange capability.

Embodiments of the present disclosure are directed to a heat exchanger system that includes a conduit configured to flow a working fluid therethrough, where the conduit has a first portion, a second portion, and a bend directly coupling the first portion and the second portion, where the first portion includes a first header connection, the second portion includes a second header connection, and the bend is distal to the first header connection and the second header connection and a support plate coupled to the bend and positioned between the first portion and the second portion of the conduit.

The invention relates to a heat exchanger assembly with at least one multi-pass heat exchanger, comprising a first distributor (1) with a first connection part (1a) for connecting to a fluid line (9), a second distributor (2) with a second connection part (2a) for connecting to a fluid line (9), and at least one first deflection distributor (4), as well as a plurality of tube lines (5) through which a fluid, in particular water, can flow, wherein the first distributor (1) and the second distributor (2) are arranged at one end (A) of the heat exchanger assembly, the deflection distributor (4) is arranged at the opposite end (B) and the tube lines (5) extend from the one end (A) to the opposite end (B), and wherein the first connection part (1a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the first distributor (1) and the second connection piece (2a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the second distributor (2). In order to allow for the heat exchanger assembly to be quickly filled with the fluid and quickly emptied, a third connection part (3) is arranged on the first distributor (1) and/or on the second distributor (2) at a highest point (H) or at least near to the highest point (H) of the respective distributor (1 or 2), and at least one ventilation opening (10) is provided at a highest point (T) or at least near to the highest point (T) of the deflection distributor (4) for pressure equalisation with the environment.

A stacking-type header includes: a first plate-shaped unit and a second plate-shaped unit having a distribution flow passage that includes a branching flow passage including: an opening port; a first straight-line part parallel to a gravity direction and having a lower end communicating with the opening port through a first connecting part; and a second straight-line part parallel to the gravity direction and having an upper end communicating with the opening port through a second connecting part, in which at least a part of the first and second connecting parts are not parallel to the gravity direction, and in which the refrigerant flows into the branching flow passage through the opening port, and flows out from the branching flow passage through each of an upper end of the first straight-line part-and a lower end of the second straight-line part.

Heat exchangers are manufactured by three-dimensional (3D) printers by printing subsequent layers of a material in a print direction. The heat exchangers include one or more tubes. The one or more tubes are configured to transport a fluid to be heated or cooled. Each of the one or more tubes defines a slope that is within a threshold angle of the print direction. The heat exchangers include a plurality of fins that are each configured to intersect with the one or more tubes while allowing fluid flow between the plurality of fins to heat or cool the fluid. Each fin of the plurality of fins defines a slope that is within a threshold angle of the print direction.

A laminated header includes: a plurality of plate-like members laminated with each other; one first opening; a plurality of second openings; and a distribution flow passage connecting the one first opening and each of the plurality of second openings to each other. The distribution flow passage includes: a first passage having a straight line shape; a first branching flow passage for the first passage to branch into a plurality of passages; a second passage that has a straight line shape and is connected to each of the plurality of passages branched in the first branching flow passage; a second branching flow passage for the second passage to branch into a plurality of passages; and a third passage that has a straight line shape and is connected to each of the plurality of passages branched in the second branching flow passage.