Abstract:
A heat exchange apparatus, and method of forming the apparatus, are disclosed. The apparatus includes a thermally conductive substrate with a metal microlattice structure adhered to the thermally conductive substrate and in thermal communication with the thermally conductive substrate, the metal microlattice structure comprising a region containing an electroless metal. A method of making the apparatus includes forming a polymer lattice, applying the polymer lattice to a thermally conductive substrate, forming an electroless plated metal layer on the polymer lattice, forming an electroplated metal layer on the electroless metal layer, and forming a metal microlattice of the electroless metal layer and the electroplated metal layer.
Abstract:
A pin fin heat sink includes a plurality of pin fins extending from a base plate, at least one of the plurality of pin fins defining a hollow portion therein. The heat sink also includes a phase change material sealed within the at least one pin fin to absorb transient thermal loads that the pin fin is subjected to.
Abstract:
A system and method for providing and using wickless capillary driven constrained vapor bubble heat pipes for application in display devices are disclosed. An example embodiment includes: a display device layer fabricated from a substrate, the display device layer including a plurality of in-built channels integrated therein; and a plurality of wickless capillary driven constrained vapor bubble heat pipes being embedded into the plurality of in-built channels, each wickless capillary driven constrained vapor bubble heat pipe including a body having a capillary therein with generally square corners and a high energy interior surface, and a highly wettable liquid partially filling the capillary to dissipate heat between an evaporator region and a condenser region.
Abstract:
A heat exchanger includes a body defining a flow channel, and a pin extending across the flow channel, the pin including an at least partially non-cylindrical shape. The pin can be a double helix pin including two spiral branches defining a double helix shape. The two branches can include a uniform winding radius. The two branches include a non-uniform winding radius. The non-uniform winding radius can include a base radius and a midpoint radius, wherein the midpoint radius is smaller than the base radius. The two branches can be joined together by one or more cross-members.
Abstract:
Systems and methods described herein are directed to rotary heat exchangers configured to transfer heat to a heat transfer medium flowing in substantially axial direction within the heat exchangers. Exemplary heat exchangers include a heat conducting structure which is configured to be in thermal contact with a thermal load or a thermal sink, and a heat transfer structure rotatably coupled to the heat conducting structure to form a gap region between the heat conducting structure and the heat transfer structure, the heat transfer structure being configured to rotate during operation of the device and flow a heat transfer medium in a substantially axial direction through the heat transfer structure. In example devices heat may be transferred across the gap region from a heated axial flow of the heat transfer medium to a cool stationary heat conducting structure, or from a heated stationary conducting structure to a cool axial flow of the heat transfer medium.
Abstract:
An assembled aluminum extrusion heat dissipator includes a heat-conducting plate and a plurality of U-shaped heat-dissipating members. The surface of the heat-conducting plate has a plurality of slots, and each of the slots extends from one side of the heat-conducting plate to another corresponding side. The U-shaped heat-dissipating member has a U-shaped body and a plurality of heat-dissipating fins, and the U-shaped body having a bottom plate and a pair of lateral plates, wherein the distance between the pair of lateral plates is corresponding to the distance of the two adjacent slots, so that the pair of lateral plates insert into the two adjacent slots, and the U-shaped heat-dissipating member integrates with the heat-conducting plate.
Abstract:
A heat exchanger is disclosed which includes a plurality of heat exchanger plates. Each plate has a plurality of hollowed out pins arranged in a pin fin pattern. Each plate also includes an inlet aperture and an outlet aperture in fluid communication with one another. A plurality of heat pipes are defined by several of the plurality of hollowed out pins. A wicking material is arranged within the several hollowed out pins. A heat transfer fluid at least partially fills each heat pipe.
Abstract:
Embodiments of the present invention relate to compressed gas storage units, which in certain applications may be employed in conjunction with energy storage systems. Some embodiments may comprise one or more blow-molded polymer shells, formed for example from polyethylene terephthalate (PET) or ultra-high molecular weight polyethylene (UHMWPE). Embodiments of compressed gas storage units may be composite in nature, for example comprising carbon fiber filament(s) wound with a resin over a liner. A compressed gas storage unit may further include a heat exchanger element comprising a heat pipe or apparatus configured to introduce liquid directly into the storage unit for heat exchange with the compressed gas present therein.
Abstract:
A heat exchanger, comprising a box-like body which delimits inside it at least one heat exchange chamber and has at least one inlet and at least one outlet for the passage through the chamber of combustion products along a preferred path. The box-like body defines at least partly in its side walls at least one duct for feeding a fluid and inside the heat exchange chamber elements are provided and are associated with the supply duct in order to increase the thermal efficiency of the heat exchanger. The heat exchanger comprises a plurality of distinct modular elements which are mutually to interconnected in order to define the box-like body. Each modular element may comprise at least one portion of the heat exchange elements, of the supply duct and of the chamber.
Abstract:
Systems and methods described herein are directed to rotary heat exchangers configured to transfer heat to a heat transfer medium flowing in substantially axial direction within the heat exchangers. Exemplary heat exchangers include a heat conducting structure which is configured to be in thermal contact with a thermal load or a thermal sink, and a heat transfer structure rotatably coupled to the heat conducting structure to form a gap region between the heat conducting structure and the heat transfer structure, the heat transfer structure being configured to rotate during operation of the device. In example devices heat may be transferred across the gap region from a heated axial flow of the heat transfer medium to a cool stationary heat conducting structure, or from a heated stationary conducting structure to a cool axial flow of the heat transfer medium.