A vapor-chamber that includes a porous microstructure sheet with varying surface energy across different regions to optimize utilization of a working fluid. Modulating the surface energy of the porous microstructure sheet can minimize the amount of the working fluid that becomes trapped in the condenser region(s) and maximize an aggregate thin-film evaporation area of the working fluid in the evaporator region(s). The condenser region of the vapor-chamber is treated so that the internal surfaces have low surface energy. For example, the treatment may cause the condenser region to become hydrophobic to minimize the amount of fluid that becomes trapped in the condenser. The evaporator region is treated so that the internal surfaces have high surface energy. For example, the treatment may cause the evaporator region to become hydrophilic to induce the formation of large numbers of robust (e.g., dry-out resistant) thin-film evaporation sites.

A heat exchanger header includes a primary fluid duct extending between a fluid port and a first branched region, a plurality of secondary fluid ducts fluidly connected to the primary fluid duct at the first branched region, wherein an overhang region is formed laterally between adjacent ones of the plurality of secondary fluid ducts, and wherein each of the plurality of secondary fluid ducts extends between the first branched region and a second branched region, a plurality of tertiary fluid ducts fluidly connected to each of the plurality of secondary fluid ducts at the second branched regions, a primary horn integrally formed with and extending from the overhang region, an at least one secondary horn integrally formed with and extending from one of the plurality of tertiary fluid ducts, and a sacrificial support structure extending between the primary horn and the at least one secondary horn.

A liquid cooling structure may include a lower structure and an upper structure. The lower structure may be configured to cover one surface of an object. The upper structure may be combined with the lower structure to provide a channel through which a cooling fluid may flow. The channel may include a plurality of passages connected between a channel inlet through which the cooling fluid may enter and a channel outlet through which the cooling fluid may exits.

A heat exchanger header includes a first stage with a first unit and a second stage with second units. The first unit includes a first branched region, a first common axis, and first fluid channels. Each of the first fluid channels includes a first end and a second end, wherein each of the first fluid channels defines a first spiral path with respect to the first common axis. Each of the second units includes a second branched region, a second common axis, and second fluid channels. Each of the second fluid channels includes a first end and a second end, wherein each of the second fluid channels defines a second spiral path with respect to the second common axis. Each of the second ends of the first fluid channels is connected to one of the second branched regions.

The Invention pertains to a heat sink comprising a substantially planar solid slab, provided with a plurality of fluid flow channels, said plurality of fluid flow channels being formed so as to channel a coolant from an inlet to an outlet of said slab, wherein said plurality of channels includes at least two main channels interconnected by at least a plurality of bridging channels that do not branch out further between their respective points of attachment to said main channels, wherein said bridging channels have a cross section that locally increases in the direction of flow, and wherein said bridging channels have a cross section that locally decreases in the direction of flow, downstream of said local increase in cross section. The invention also pertains to a method for producing a heat sink.

A cold plate may include a plate body having a thermal conductive side; a plurality of parallel hollow fluid channels running inside the plate body; at least one fluid inlet in direct fluid communication with a first subset of the plurality of parallel hollow fluid channels; at least one fluid outlet in direct fluid communication with a second subset of the plurality of parallel hollow fluid channels; and a porous thermal conductive structure which fluidly connect the first subset of the plurality of parallel hollow fluid channels to the second subset of the plurality of parallel hollow fluid channels, and which is in thermal contact with the thermal conductive side of the plate body. The porous thermal conductive structure may include a plurality of elongate fluid contact surface regions, each may be extending continuously lengthwise along a longitudinal side of respective fluid channel to serve as a fluid interface.

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 includes a first fluid manifold extending along a first fluid axis from a first fluid inlet to a first fluid outlet. The first fluid manifold comprises a inlet header, a outlet header, and a multi-helical core section. The inlet header is disposed to fork the first fluid inlet into a plurality of first fluid branches distributed laterally across a plane normal to the first fluid axis. The outlet header is disposed to combine the plurality of first fluid branches into the first fluid outlet. The multi-helical core section fluidly connects the inlet header to the outlet header via a plurality of laterally distributed helical tubes, each helical tube corresponding to one of the plurality of first fluid branches and oriented parallel to all others of the plurality of helical tubes at each axial location along the first fluid axis.

A heat exchanger module with a longitudinal axis including a stack of plates defining at least two fluid circuits, at least a portion of the plates each including fluid circulation channels each delimited, at least in part, by a groove. A communication is produced between the channels within a same plate and between all the plates of a same circuit, in a feed or pre-collector zone, with a succession of channel groupings, two-by-two, in the form of bifurcations.

A counterflow heat exchanger includes a first fluid inlet, a first fluid outlet fluidly coupled to the first fluid inlet via a core section, a second fluid inlet, and a second fluid outlet fluidly coupled to the second fluid inlet via the core section. The core section includes a plurality of first fluid passages configured to convey the first fluid flow from the first fluid inlet toward the first fluid outlet, and a plurality of second fluid passages configured to convey the second fluid flow from the second fluid inlet toward the second fluid outlet such that the first fluid flow exchanges thermal energy with the second fluid flow at the core section. One or more drains are operably connected to the plurality of first fluid passages configured to remove condensation from an interior of the first fluid passages prior to the condensation reaching the first fluid outlet.