The invention relates to a dispersion and also to a method for coating objects, in particular heat exchanger structures, in which this dispersion is applied on a carrier structure and is crosslinked and/or made into a film with formation of a layer. Likewise, the invention relates to heat exchanger structures coated in this way. The dispersions according to the invention can likewise be used for coatings in the construction of chemical plants and also in medical technology.

A two-phase cooling system for an X-ray high-voltage generator comprises a heat sink block and a heat sink. The heat sink block spatially surrounds a cooling duct loop, wherein the cooling duct loop is at least partially filled with a working medium and is configured to act as an oscillating heat pipe. The heat sink is configured to dissipate heat from a heat source. The heat sink block includes a material including a polymer.

In one aspect, a transparent heat exchanger includes a first transparent substrate optically attached to a heat source, one or more fins to transfer heat from the heat source, the one or more fins comprising transparent material and further comprising one of a manifold coupled to the first transparent substrate or a facesheet coupled to the first transparent material.

In one aspect, a transparent heat exchanger includes a first transparent substrate optically attached to a heat source, one or more fins to transfer heat from the heat source, the one or more fins comprising transparent material and further comprising one of a manifold coupled to the first transparent substrate or a facesheet coupled to the first transparent material.

A power generation system includes a turbine having an outlet. A high temperature recuperator has an inlet and is connected to the turbine outlet. A low temperature recuperator is connected to the high temperature recuperator. Each of the high and low temperature recuperators include a plurality of matrix panels interconnected together that define hot fluid channels and cold fluid channels arranged adjacent to each other in a counterflow and stair-step configuration. A compressor is connected to the low temperature recuperator and turbine.

A unitary graphene-based integrated heat sink comprising a heat collection member (base) and at least one heat dissipation member (e.g. fins) integral to the baser, wherein the base is configured to be in thermal contact with a heat source, collects heat therefrom, and dissipates heat through the fins. The unitary graphene material is obtained from heat-treating a graphene oxide gel at a temperature higher than 100 C., 500 C., 1,250 C., or 2,000 C., and contains chemically bonded graphene molecules having inter-graphene distance of 0.3354-0.4 nm (preferably <0.337 nm). The unitary graphene material is a graphene single crystal, a poly-crystal with incomplete grain boundaries, or a poly-crystal having large grain sizes (e.g. >mm or cm), exhibiting a degree of graphitization preferably from 1% to 100% and a Mosaic spread value less than 0.7 (preferably no greater than 0.4). The finned heat sink may also be made from a filler-reinforced graphene matrix composite.

A cooler having a first component made of at least one of steel, stainless steel, plastic and ceramic. A second component may be made of aluminum, wherein the two components may be connected to each other in a connecting area via a friction stir weld joint.

A helical coil is supported inside a heat exchanger tube by at least one inside protrusion on the inside wall of the tube, the at least one protrusion supports the helical coil on a contact point of the helical coil against downwards movement in the tube and supports the helical coil on the end point of the helical coil against rotational movement in a first rotational direction relative to the tube.

An apparatus includes a glass body having a first face and a second face on opposing ends and defining a longitudinal axis between the opposing ends. The glass body includes multiple planar exterior surfaces, each extending continuously from the first face to the second face. The glass body also includes an interior surface surrounding an aperture, the aperture extending longitudinally from the first face to the second face. The glass body further includes a plurality of holes surrounding the aperture, where the holes are disposed within the glass body and extend longitudinally from the first face to the second face. The holes are configured to receive and direct a gas through the holes to exchange heat between the gas and the glass body.

A fluid vessel assembly is provided with a first vessel body with a first mating surface with a first plurality of generally planar nonparallel regions. The first vessel body forms a first portion of a fluid cavity. A second vessel body is provided with a second mating surface with a second plurality of generally planar nonparallel regions sized to engage the first mating surface. The second vessel body forms a second portion of the fluid cavity. The first mating surface and the second mating surface are friction stir welded together.