A heat exchanger including an enclosure and a minimal surface structure within the enclosure. The enclosure including a first inlet, a first outlet, a second inlet, and a second outlet. The minimal surface structure separating a first volume and a second volume within the enclosure. The first inlet and the first outlet being in fluid communication with the first volume, and the second inlet and a second outlet being in fluid communication with the second volume. The first and second volumes separated from mixing with each other.

A heat exchanger having an inlet tube, a chamber section, an outlet tube, and a medium directing member assembly disposed within the chamber section. The medium directing member assembly comprise an inlet channel member and an outlet channel member, with a medium directing distribution panel longitudinally disposed in between. The medium directing distribution panel is provided with an inlet face, set at an angle with respect to the inlet channel member, and an outlet face set at an angle with respect to the outlet channel member. Two independent sets of a pair of semi-circular symmetrical heat exchange medium flow pattern is established, with the first pair flowing peripheral to the inlet channel member, while the second pair flowing peripheral to the outlet channel member. The medium directing distribution panel is provided with two lateral and two vertical adjustment panels, permitting heat exchange medium throttling means within the chamber section.

A heat transfer device includes a storage chamber, a coolant housed within the storage chamber, a cooling chamber, one or more heat transfer components, a fluid passage between the storage chamber and the cooling chamber, and a barrier element. The one or more heat transfer components facilitate heat transfer from a heat source outside of the cooling chamber to the cooling chamber. The barrier element may have (i) a closed configuration, and (ii) an open configuration in which the barrier element is configured to allow the coolant in the storage chamber to flow from the storage chamber into the cooling chamber. The barrier element may reconfigure from the closed configuration to the open configuration in response to a trigger condition, such as the coolant housed within the storage chamber reaching a trigger temperature; and/or the initial pressure of the coolant housed within the storage chamber reaching a trigger pressure.

A cell structure is provided that is (i) capable of handling, on inner and outer surfaces, heat transfer requirements of heat exchangers and/or be a substrate for coatings for catalytic reactors, (ii) able to be easily combined and interconnected into a variety of shapes, and (iii) may be created in an additive manufacturing process. The provided cell structure may be replicated and interconnected with other cell structures to create lattice structures in a variety of shapes. Accordingly, the cell structure may be used to build a heat exchanger or catalytic reactor that has reduced weight compared to traditional architectures.

A plate (1) for a heat exchange arrangement has a first heat transferring surface (A) with a protrusion (7) forming a continuous and closed ridge. This ridge divides said surface into a closed inner region (A1) and an outer region (A2). The inner region (A1) encloses a first inlet porthole (2) and a first outlet porthole (5) for a first medium. The outer region (A2) has a second inlet porthole (3) and a second outlet porthole (6) for the first medium. A heat exchange arrangement comprises a stack of first and second plates of the above type. The protrusions (7) on the first heat transferring surfaces (A) of said plates are connected to each other to separate first channels into first and second flow paths for the first medium. Each first flow path is configured to direct the first medium from a first inlet to a first outlet inside the inner region (A1) and each second flow path is configured to direct the first medium from a second inlet to a second outlet in the outer region (A2), said inlets and outlets being defined between said inlet and outlet portholes (2, 3 and 5, 6 respectively).

An outdoor unit for an air-conditioning apparatus includes a heat exchanger including a plurality of heat exchanger units. The plurality of heat exchanger units are vertically stacked and each include a long side portion, a short side portion, and a corner portion bent and connecting the long side portion and the short side portion to each other. In the heat exchanger, deviation in an air flow direction that lies between ones of the plurality of heat exchanger units that are vertically adjacent to each other is larger at the short side portions than at the long side portions.

Matrix (30) for a heat exchanger to exchange heat between a first fluid and a second fluid, the first fluid being for instance air and the second fluid being for instance oil. The matrix (30) comprises: a channel for the first fluid. an array of passages for the second fluid, the passages extending in the channel. The array supports at least two cooling fins. The matrix is made by a process of additive manufacturing. The fins are inclined with respect to each other along the direction of the flow of the first fluid.

A method of forming a component includes defining a component volume discretized by a target mesh formed by a plurality of volume elements, each volume element defined, at least in part, by a shape function. The method further includes defining a parting surface within a representative volume element and discretizing the parting surface using a surface mesh that includes a plurality of surface elements and a plurality of surface nodes. The method further includes mapping the surface mesh into each volume element of the target mesh according to the quartic, or higher order, shape functions of the target mesh and forming a component based on the component surface structure produced by the mapped surface mesh.

In one general aspect, a microchannel heat exchanger is disclosed. It includes a cover, a base, and thermally conductive sheets between the cover and the base that each define a series of side-by-side lanes aligned with a flow direction. The lanes each include aligned slots that define microchannel segments and are separated by cross ribs. The sheets are stacked between the base and cover so as to cause at least some of the ribs to be offset from each other and allow the microchannel segments in the same lane in adjacent sheets to communicate with each other along the flow direction to define a plurality of microchannels in the heat exchanger.

A coolant heating apparatus for an electric vehicle includes a sheath heater formed in a coil form at a center side of the coolant heating apparatus; one or more inner tubes, one of which has an inlet formed at one side thereof for introduction of coolant, the one or more inner tubes being arranged to surround the sheath heater or to be surrounded by the sheath heater, and the one or more inner tubes having a plurality of through-holes formed on respective outer peripheral surfaces thereof so that the coolant introduced into the inlet is discharged through the through-holes; and an outer tube surrounding the sheath heater and the one or more inner tubes and having an outlet formed at one side thereof so that the coolant heated by the sheath heater is introduced through the through-holes of the one or more inner tubes and is discharged through the outlet.