A thin vapor chamber is provided. The thin vapor chamber includes an upper plate, a lower plate, and a plurality of solid columns. The lower plate is opposite to the upper plate, and the upper plate and the lower plate are combined to form a closed space. The solid column is formed on the upper plate and extends to the lower plate. The solid columns are located in the closed space. The solid columns respectively have at least one capillary groove, and a first portion of an inner surface of the capillary groove faces a second portion of the inner surface.

A tube and tubesheet assembly is provided, which includes a tubesheet, the tubesheet comprising at least one tube insertion aperture therethrough; at least one tube inserted in the at least one tube insertion aperture; and a damage-resistant layer applied to an edge of the at least one tube and along an inner surface of a portion of the tube that is positioned within the corresponding tube insertion aperture. A heat exchanger including the assembly is also provided. A method is also provided for coupling a tube to a tubesheet. The method includes applying a damage-resistant layer to an edge of the tube and along an inner surface of a portion of the tube that is positioned within a tube insertion aperture in the tubesheet. The method can also be used to repair tubes and retrofit pre-existing tube-to-tubesheet joints.

A liquid cooling head includes a bottom plate, a heat dissipation plate, a partition plate and an upper cover plate. The bottom plate includes an opening, and the heat dissipation plate, the partition plate and the upper cover plate are fixed to the bottom plate. The partition plate divides the opening into a plurality of cooling chambers, and each cooling chamber is equipped with a cooling liquid inlet, a cooling liquid outlet, a pump and an electric control device. The cooling liquid inlet and the cooling liquid outlet are formed in the upper cover plate, the pump is fluid-connected to the cooling liquid outlet, and the electric control device drives the pump to rotate, so that the cooling liquid flows through the cooling chamber to cool one heat source below the heat dissipation plate. In addition, a liquid cooling device with the liquid cooling head is also disclosed therein.

A liquid cooling head manufacturing method includes the following steps. First, a liquid channel main body is provided. Then, a heat dissipation bottom plate and a heat sink are disposed in different recessed indentations in the liquid channel main body. The heat dissipation bottom plate and the heat sink are welded in the liquid channel main body and a cover plate is sealed on the liquid channel main body.

A heat transfer arrangement for use with an immersion cooling system. A support is configured to contact a heat transfer device such as a vapor chamber or spreader plate to stiffen the heat transfer device and urge the heat transfer device into contact with a heat generating device. The support includes an arm that has a first portion that extends toward a central area of the heat transfer device over and out of contact with the heat transfer device and a second portion that contacts the heat transfer device within the central area. The arm can avoid contact with the heat transfer device, including surfaces having a boiling enhancement coating configured to transfer heat to a cooling liquid.

An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.

A heat exchanger, e.g., an indirect charge air cooler for an internal combustion engine, is disclosed. The heat exchanger includes a plurality of tubes that provide a first channel system for a first fluid, and a second channel system for a second fluid disposed between the plurality of tubes that is fluidically separated from the first channel system. Two opposite side parts for fluidically bounding the second channel system are provided, between which the plurality of tubes are arranged. At least one frame part is soldered together with a respective outer edge of the two side parts. The outer edge of a side part includes a tab bent over S-shaped as edge reinforcement with a first tab section solder-plated on an outside and a second tab section solder-plated on an inside. The frame part has an S-shaped cross section with a first receptacle that receives the first tab section.

A stiffener for a heat exchanger includes a top plate and at least two legs extending from opposing sides of the top plate. Each of the at least two legs includes a bent portion, an angled portion, and a straight portion. The bent portion attaches the leg to the top plate. The angled portion increases a width of the stiffener from a width of the top plate. The straight portion extends perpendicular to a plane of the top plate.

A multilayer film includes: an Ag alloy film; and a transparent dielectric film laminated on both surfaces of the Ag alloy film, and in the Ag alloy film, at least one of Sn or Ge is contained in a range of 0.5 atom % to 8.0 atom % in total, a total content of Na, K, Ba, and Te is 50 ppm by mass or less, a carbon content is 50 ppm by mass or less, and a remainder contains Ag and unavoidable impurities.

Oleophobic and/or philic surface(s) are utilized for oil separation, direction, and/or collection in a refrigeration system. Surfaces of component(s) of a refrigeration system (compressor, oil separator, evaporator, etc.) are produced to be oleophobic or philic. The oleophobic and/or philic surfaces are utilized to direct a flow path of oil within the refrigeration system or to prevent oil connection in an area. Refrigerant phobic and/or lubricant phobic material(s) also may be utilized to help promote separation of refrigerant vapor from refrigerant liquid and/or from oil in refrigeration systems.