A heat exchanger that is fabricated with high nickel metal alloys provides enhanced corrosion resistance when in contact with fluids that are reducing and contain metal chlorides. In an embodiment, this type of heat exchanger is used in the recovery section of a solution polymerization process.

A self-healing metal structure is provided for transferring heat between an electronics component and a substrate. The self-healing metal structure includes a base metal structural component. A phase change material is provided adjacent at least a portion of the base metal structural component. A protective component at least partially encapsulates the phase change material. Upon the presence of a spatial defect in the base metal structural component, the phase change material reacts with the base structural component to form an intermetallic compound to at least partially occupy the spatial defect. The phase change material at least partially encapsulated with the protective component may be disposed within the base metal structural component as a plurality of separate capsules incorporated therein, or the phase change material at least partially surrounds the base metal structural component.

A round metal pipe 1 including a bend portion 10 is configured such that on an axial direction cross-section of the bend portion 10, an outer half portion 11b of a peripheral wall portion 11 of the bend portion 10 has an outwardly projecting, non-circular arc shape in which a central portion in a y direction, which is orthogonal to a bend radius direction x of the bend portion 10, forms an outermost peripheral portion 13, and a distance Lb from respective intermediate portions 15 between the outermost peripheral portion 13 and a pair of proximal end portions 14 of the outer half portion 11b to a pipe center O is shorter than a distance La from the outermost peripheral portion 13 to the pipe center O. Thus, advantages such as suppressing reductions in the sectional area and minimum inside width of the bend portion 10 and reducing flow path resistance can be obtained, and the round metal pipe 1 can be manufactured easily and appropriately.

The invention relates to a heat exchanger (1) comprising a heat exchanger body (3) comprising at least a first channel wall portion (10), a second channel wall portion (20), and a third channel wall portion (30). The heat exchanger further comprises a first channel (5) for a first fluid, and a second channel (7) for a second fluid, such that heat is allowed to be transferred between the first channel and the second channel via the second channel wall portion. The heat exchanger comprises a plurality of first support structures (50) arranged in the first channel and extending from the first channel wall portion to the second channel wall portion, and a plurality of second support structures (70) arranged in said 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 manifold structure is formed using ultrasonic additive manufacturing and machining. The manifold structure includes a body having a base plate and a cover plate that define a flow passage therebetween, and a plurality of walls that segment the flow passage into a plurality of channels, wherein each of the walls has a height extending from the base plate to the cover plate and a non-linear length that is elongated relative to a width of the wall and extends in a direction normal to the height of the wall. The walls are wavy in shape to provide enhanced rigidity and stiffness during lamination over the channels.

The invention relates to a method for producing a latent heat accumulator of expanded graphite by expanding a graphitic starting material. The invention is characterized in that the graphitic starting material is introduced into a mold which corresponds at least in sections to the negative mold of the latent heat accumulator, and that the graphitic starting material is subsequently expanded in the closed mold.

A manifold structure has at least one flow passage and a center manifold section that has at least one machined cavity. The manifold structure includes a plurality of ultrasonically additively manufactured (UAM) finstock layers arranged in the flow passage. After the finstock is formed by UAM, the finstock is permanently joined to the center manifold section via a brazing or welding process. Using UAM and a permanent joining process enables joining of the UAM finstock having enhanced thermal features to a vacuum brazement structure. UAM enables the finstock to be formed of dissimilar metal materials or multi-material laminate materials. UAM also enables bond joints of the finstock to be arranged at angles greater than ten degrees relative to a horizontal axis by using the same aluminum material in the UAM process and in the vacuum brazing process.

A gearbox and a method for additively manufacturing the gearbox are provided. The gearbox includes a housing having an integral heat exchanger additively manufactured within the housing. The heat exchanger includes a plurality of heat exchange passageways for transferring heat between two or more fluids. The heat exchanger is defined at any suitable location or locations within the housing, for example, within voids defined between the walls of the housing and components housed within housing, such as driveshafts, gears, bearings, etc.

A tank portion defines a space therein and has an opening on one side. A foot portion is in a plate shape extending radially outward from a bottom end of the tank portion on the one side. A core plate covers the opening and has a base portion and a holder portion. The base portion is in an elongated rectangular plate shape having first and second long lateral sides and a short lateral side. The holder portion includes a first holder at the first long lateral side, a second holder at the second long lateral side, and a third holder at the short lateral side, each gripping the foot portion. All the first holder, the third holder, and the second holder are one piece continuously extending along the first long lateral side, the short lateral side, and the second long lateral side.

A ducted heat exchanger system for a gas turbine engine includes an additive manufactured heat exchanger core with a contoured external and/or internal geometry. A method of additively manufacturing a heat exchanger for a gas turbine engine includes additively manufacturing a core of a heat exchanger to set a ratio of local surface area to flow area to control a pressure drop per unit length along the core.