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 heat exchanger comprising a plurality of A channels in a heat exchanger matrix running in a first direction wherein each A channel is formed along its length as a waveform with an identical wavelength, channel width, wave angle, and wall thickness. Adjacent A channels running in an orthogonal direction are 180 degrees out of phase. The plurality of A channels form the plurality of B channels running in a cross-flow direction with the outer walls of the A channels. The B channels exist as the negative space between adjacent 180 degree out of phase A channels.

Embodiments of a surface heat exchanger for a vehicle are described. In one embodiment, a surface heat exchanger includes a plurality of fins on a first outer surface The surface heat exchanger is mounted within an interior of a duct of a vehicle. An inlet of the duct is located on a side of the vehicle forward of a rear axle of the vehicle and an outlet of the duct is located rearward of the inlet. The plurality of fins of the surface heat exchanger are exposed to the interior of the duct. The plurality of fins are configured to transfer heat to airflows interacting with the plurality of fins as the airflows pass through the duct.

A conduit assembly may comprise: a pipe; a plurality of hollow passages disposed through the pipe; and a plurality of flow guides disposed in the pipe, each flow guide in the plurality of flow guides at least partially defining a respective hollow passage in the plurality of hollow passages. The conduit assembly may act as a heat exchanger.

A heat exchanger is provided. The heat exchanger includes a first wall manifold. The heat exchanger further includes a second wall manifold spaced apart from the first wall manifold. The heat exchanger further includes a plurality of vanes that extend generally circumferentially between the first wall manifold and the second wall manifold. The heat exchanger further includes a plurality of fluid circuits defined within the heat exchanger. Each fluid circuit in the plurality of fluid circuits includes an inlet channel portion and an outlet channel portion defined within the first wall manifold. A return channel portion defined within the second wall manifold. At least one passage portion of a plurality of passage portions defined within each vane of the plurality of vanes. The at least one passage portion extends between the return channel portion and one of the inlet channel portion and the outlet channel portion.

Disclosed is a power generation device including a case including a through hole configured to pass therethrough in a first direction and form an inner surface, a duct disposed in the through hole of the case and having a flow path such that a first fluid flows in a second direction perpendicular to the first direction, a first thermoelectric module including a first thermoelectric device disposed on a first surface of the duct and a first fin disposed in the first thermoelectric device, a second thermoelectric module including a second thermoelectric device disposed on a second surface facing the first surface of the duct and a second fin disposed in the second thermoelectric device, a plurality of first guide portions coupled to the case and disposed on the duct while facing each other, and a second guide portion disposed on a third surface formed between the first surface and the second surface of the duct. Here, the second guide portion extends between the plurality of first guide portions in the second direction. Also, the plurality of first guide portions and the second guide portion each include a tilting surface, and a tilt angle of the tilting surface of the second guide portion differs from a tilt angle of the tilting surface of each of the plurality of first guide portions.

A system includes an engine case. A heat exchanger is included inside the engine case. The heat exchanger includes an air passage and a fuel passage. The air passage and fuel passage are in fluid isolation from one another, but are in thermal communication with one another for exchange of heat.

A conduit assembly may comprise: a pipe; a plurality of hollow passages disposed through the pipe; and a plurality of flow guides disposed in the pipe, each flow guide in the plurality of flow guides at least partially defining a respective hollow passage in the plurality of hollow passages. The conduit assembly may act as a heat exchanger.

A first connection portion is located on one side of a predetermined flow path member in a plane direction. The predetermined flow path member and another flow path member are bonded by brazing at the first connection portion. A second connection portion is located on the other side of the predetermined flow path member. The predetermined flow path member and another flow path member are bonded by brazing at the second connection portion. A brazing material layer extends over the predetermined flow path member, the first connection portion, and the second connection portion. A hilling portion is a portion of the predetermined flow path member. The hilling portion is curved to protrude toward a side on which the brazing material layer is provided. The hilling portion extends along a direction in which the first connection portion or the second connection portion extends.

A heat exchanger includes a header and a side plate. The header has a face plate that defines a plurality of orifices. The header has a protrusion that extends outward from the header and down such that a gap is formed between the header and the protrusion. An external portion of the protrusion is configured to break away from the header during thermal expansion. The side plate is disposed adjacent to an array of alternating tubes and fins. Each tube extends into one of the orifices of the plurality of orifices. The side plate has an end that is secured to the external portion of the protrusion.