In cooling/heating cycles of a heat exchanger, to prevent cracks that tend to occur in a brazed portion between an end portion of a horizontal cross-section of a tube and a header plate. An end portion cover body is provided for an end portion of a tank main body or a header to cover hereby an end portion in a longer side direction of an opening end portion of a flat tube.

Devices configured to direct heat flow are disclosed, as well as methods of forming thereof. A device may include a self-assembling heat flow object. The self-assembling heat flow object may include a material having one or more self-assembling properties that cause the material to react to an environmental stimulus and one or more thermal pathways. An application of the environmental stimulus causes the self-assembling heat flow object to deploy and arrange the one or more thermal pathways for directing thermal energy to one or more locations.

A heat exchanger assembly for a gas turbine engine including a frame, including a non-planar outer wall, a non-planar inner wall spaced radially inward from the non-planar outer wall to form a frame cavity therebetween, an inlet side extending between the non-planar outer wall and the non-planar inner wall, an inlet passage extending through the inlet side, an outlet side extending between the non-planar outer wall and the non-planar inner wall opposite the inlet side; an outlet passage extending through the outlet side, and a continuous non-planar core disposed within the frame cavity and in flow communication with the inlet passage and the outlet passage.

A heat exchanger is provided with a unitary, single-piece structure that can be formed via 3D printing, for example. The heat exchanger includes a main body defining a first fluid inlet port, a first fluid outlet port, a second fluid inlet port, and a second fluid outlet port, wherein each of these fluid ports are integrally formed with the main body. A plurality of plates are stacked and integrally formed with the body. First fluid channels are defined by gaps in the material of the main body and are in fluid communication with the first fluid inlet port. Second fluid channels are defined by gaps in the material of the main body and are in fluid communication with the second fluid inlet port. The first fluid channels and the second fluid channels are interposed between the plates in alternating fashion along the stacked arrangement.

A prosthetic socket cooling system and method includes a thermally conductive heat spreader including a curved shaped portion configured to maximize contact with a residual limb of a user. A heat extraction subsystem is coupled through a wall of the prosthetic socket and to the thermally conductive heat spreader and is configured to maintain a desired temperature inside the prosthetic socket.

A heat exchanger manifold configured to receive or discharge a first fluid includes a primary fluid channel and a plurality of secondary fluid channels. The primary fluid channel includes a fluid port and a first branched region distal to the fluid port. The plurality of secondary fluid channels are fluidly connected to the primary fluid channel at the first branched region. Each of the plurality of secondary fluid channels includes a first end and a second end opposite the first end. Each of the plurality of secondary fluid channels extends radially from the first branched region at the first end and has an equal length from a center of the first branched region to the second end.

A heat exchanger is disclosed. The heat exchanger includes a hollow tube extending from a tube inlet to a tube outlet. The hollow tube includes a wall that includes a core of a first aluminum alloy, and a cladding over the core of a second aluminum alloy. The second aluminum alloy is less noble than the first aluminum alloy and includes an alloying element selected from tin, indium, or gallium, or combinations thereof. A first fluid flow path is disposed along an inner surface of the wall from the tube inlet to the tube outlet, and a second fluid flow path is disposed across an outer surface of the wall.

A heat exchanger body includes at least a first channel wall portion, a second channel wall portion, and a third channel wall portion. A first channel for a first fluid, and a second channel for a second fluid are provided such that heat is allowed to be transferred between the first channel and the second channel via the second channel wall portion. A plurality of first support structures are arranged in the first channel and extend from the first channel wall portion to the second channel wall portion. A plurality of second support structures are arranged in the second channel and extending from the second channel wall portion to the third channel wall portion. The support structures are configured to support the second and third channel wall portions during manufacturing of the heat exchanger.

A heat exchanger including: a first flow path surrounded by a first flow path wall; a second flow path surrounded by a second flow path wall formed separately from the first flow path wall; and a third flow path formed by a space between the first flow path wall and the second flow path wall. The first flow path is configured to allow a first fluid to flow therethrough, the second flow path is configured to allow a second fluid to flow therethrough, and the third flow path is configured to allow a third fluid to flow therethrough. The heat exchanger performs heat exchange between the first fluid and the third fluid, and between the second fluid and the third fluid. The first flow path wall and the second flow path wall are formed such that the first flow path and the second flow path are three-dimensionally intertwined.

A heat exchanger is provided with a unitary, single-piece structure that can be formed via 3D printing, for example. The heat exchanger includes a main body a plurality of plates stacked and integrally formed with the body. First fluid channels are defined by gaps in the material of the main body, and second fluid channels are defined by gaps in the material of the main body and are stacked with the first fluid channels in alternating fashion, separated by the plates. Each of the first fluid channels define a first flow path, and each of the second fluid channels define a second flow path. A portion of the first flow paths overlap, and are oriented opposite to, a portion of the second flow paths. Another portion of the first flow paths overlap, and are oriented transverse to, another portion of the second flow paths.