The present invention relates to a blend of at least one boron source and at least one silicon source, wherein the blend comprises boron and silicon in a weight ratio boron to silicon within a range from about 5:100 to about 2:1, wherein silicon and boron are present in the blend in at least 25 wt %, and wherein the at least one boron source and the at least one silicon source are oxygen free except for inevitable amounts of contaminating oxygen, and wherein the blend is a mechanical blend of powders, and wherein particles in the powders have an average particle size less than 250 m. The present invention relates further to a composition comprising the blend a substrate applied with the blend, a method for providing a brazed product, and uses.

A Plate and Shell type plate heat exchanger, which comprises an inner shell (9) completely surrounding a plate pack (2) and inner end plates (11a, 11b) in the direction of the ends of the plate pack. The inner shell (9) is by its inner surface arranged into contact with the outer edge of the baffle plates (8a, 8b) arranged on the surface of the plate pack and by its outer surface the inner shell (9) is arranged to support itself against the inner surface of the shell (3) of the outer casing of the heat exchanger. The inner end plates (11a, 11b) are supported by their outer surface against the inner surface of the end plates (4a, 4b) of the outer casing.

A heat dissipation device and a manufacturing method thereof. The heat dissipation device includes a main body and at least one fixing hole. The main body has a first board body and a second board body corresponding to the first board body. The first and second board bodies are mated with each other to define a chamber. A working fluid and multiple support pillars are disposed in the chamber. At least one capillary structure is disposed on a surface of the chamber. The fixing hole is formed on the main body in a position where any support pillar is positioned. The fixing hole passes through the first and second board bodies and the support pillar. According to the above arrangement, the airtightness of the chamber of the main body can be ensured. Also, the heat spreader can be tightly connected with other components.

Disclosed is a method for producing a permanently joined plate heat exchanger comprising a plurality of metal heat exchanger plates having a solidus temperature above 1100 C., provided beside each other and forming a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package, wherein each heat exchanger plate comprises a heat transfer area and an edge area comprising bent edges which extend around the heat transfer area, wherein a first surface of the plates forms a convex shape and a second surface of the plates forms a concave shape, wherein the heat transfer area comprises a corrugation of elevations and depressions, wherein said corrugation of the plates and the bent edges are provided by pressing the plates. Also disclosed is a plate heat exchanger produced by the method.

Disclosed is a method for producing a permanently joined plate heat exchanger comprising a plurality of metal heat exchanger plates having a solidus temperature above 1100 C., provided beside each other and forming a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package. Each heat exchanger plate comprises a heat transfer area and an edge area which extend around the heat transfer area. The heat transfer area comprises a corrugation of elevations and depressions, wherein said corrugation of the plates are provided by pressing the plates. Also disclosed is a plate heat exchanger produced by the method.

A method of fabricating a vacuum insulated refrigerator structure includes injection molding a first layer of a first polymer material. A second layer of a second polymer material is injection molded over at least a portion of the first layer, and a third layer of a third polymer material is injection molded over at least a portion of the second layer to form a first component. At least one of the layers is impervious to one or more gasses. A second component is secured to the first component to form a vacuum cavity therebetween. The vacuum cavity is filled with a porous material, and the vacuum cavity is evacuated to form a vacuum. At least one of the first and third layers includes a structural reinforcement such as a rib or screw boss of increased thickness that is formed during the injection molding process.

A heat exchanger arrangement, for example for an internal combustion engine, having a brazed radiator block (1) which has flow paths (10) formed from pairs of plates and has flow ducts (3) between the plate pairs (P), wherein in each case at least one plate (11) of each plate pair has a plate elongation (12), and wherein the brazed radiator block is arranged in a housing (2) and, at its circumference, is sealed off with respect to the housing. To improve the sealing action between the radiator block (1) and the housing (2), it is provided according to the invention that the plate elongations (12) are formed such that a prescribed dimension of the brazed radiator block (1) can be set by means of deformation of the plate elongations (12).

A method of manufacturing a plate heat exchanger comprises bending metal sheets along a marginal edge running in the longitudinal direction to define a seam per metal sheet, forming a plate pair by arranging two plates on top of the other in a stacking direction and welding them together. The two plates are turned towards each other with their respective seams such that a seam of one plate is assigned to a free marginal edge of the other plate and the two plates being welded together along their respective seams. The method includes forming a plate stack by arranging and welding at least two plate pairs on top of the other. A first spacer extends along a first longitudinal edge and a second spacer extends along a second longitudinal edge with the spacers being welded together, the elongate spacers having an L-shaped cross-section, a C-shaped cross-section and/or a complete cross-section.

A solar power system having a heat exchanger, a heat-focusing mirror used to receive sunlight, a turbine generator, and a battery coupled to the turbine generator is provided. The heat exchanger has a first guiding channel for a first heat-exchange fluid and a second guiding channel for a second heat-exchange fluid. Sunlight is focused to the first heat-exchange fluid flow in the first guiding channel by the heat-focusing mirror. One end of the turbine generator is communicated with the outlet of the second guiding channel. The second heat-exchange fluid is suitable for driving the turbine generator to produce an electric power, and the electric power can be stored into the battery.

An apparatus includes a core configured for use in an energy exchanger. The core includes a plurality of stacked and spaced planar plate pairs including a top plate and a bottom plate to support fluid flow of a first fluid flow and a second fluid flow. A plurality of dimples is provided by instances of the plate pairs. The plurality of dimples are arranged to generate substantially counter current flow between the first fluid flow and the second fluid flow.