Abstract: An extruded aluminum conduit comprising a substantially cylindrical body including defining a conduit interior. The body may include an exterior surface defined by an outer diameter and an interior surface defined by an inner diameter. The conduit may include one or more protrusions protruding from the interior surface of the body toward the conduit interior and away from the exterior surface. The one or more protrusions may run substantially continuously from a first end of the body to a second end of the body.

Abstract: Techniques are disclosed for producing multilayered composites of adhesive nanofiber composites. Specifically, one or more sheets of highly aligned nanofibers are partially embedded in an adhesive such that at least a portion of the nanofiber sheet is free from adhesive and is available to conduct current with adjacent electrical features. In some example embodiments, the adhesive nanofiber composites are metallized with a conductive metal and in these and other embodiments, the adhesive nanofiber composites may also be stretchable.

Abstract: An exhaust gas recirculation heat exchanger for allowing a flow of exhaust gas therethrough and a transfer of heat between the exhaust gas and a heat exchange fluid and a heat shield for shielding heat from exhaust gas flowing from an inlet of an exhaust gas recirculation heat exchanger toward a plurality of conduits disposed downstream from the inlet are provided. The heat shield includes a heat shield body and a plurality of apertures extending through the heat shield body and configured to be aligned with a plurality of conduits of the exhaust gas recirculation heat exchanger in a direction of flow of the exhaust gas through the exhaust gas recirculation heat exchanger.

Abstract: A heat sink and method of making the same. The heat sink having one or more helical fins. The helical fins configured such that the pressure field on either side of the fin is asymmetric.

Abstract: Objects of the present invention are to provide a player tracking device main body which can be stably located in various postures inside of a housing of a gaming machine; and a player tracking device which includes said player tracking device main body. A PTS main body 1700b includes a magnet cover 1801 formed as a protruding portion on a central upper side of a base panel 1803. Inside of the magnet cover 1801, magnets (1810, 1811, and 1812) which are sandwiched between the magnet cover 1801 and a base stopper 1815 are located.

Abstract: A device for controlling a vehicle display device may include: a processor to determine a vehicle driving condition, and adjust a screen size of the vehicle display device based on the determined vehicle driving condition; and a storage to store information determined by the processor.

Abstract: This disclosure provides a heat exchanger that can more efficiently remove the frost attached to the heat exchanger. A configuration of a heat exchanger according to the present invention includes a heat transfer member (e.g., a fin) that performs heat exchange with air, wherein the heat transfer member (e.g., the fin) includes, in a vicinity of an upstream-side edge in an air traveling direction, a plurality of linear protruding portions that are formed in parallel to the edge.

Abstract: This composite material structure is provided with: a first composite member arranged facing a heating element , the first composite member including PAN-based carbon fibers; a second composite member arranged between the heating element and the first composite member, the second composite member including pitch-based carbon fibers; and a cushioning element provided between the first composite member and the second composite member, the cushioning element being joined to each of the first composite member and the second composite member, and having lower rigidity than those of the first composite member and the second composite member. The first composite member is provided so as to be linked to an adjacent structure, while the second composite member and the cushioning element are provided so as to be separated from the structure.

Abstract: In a thermal conduction structure and its manufacturing method, the thermal conduction structure includes a vapor chamber, a heat pipe and a working fluid. The vapor chamber includes an upper casing, a lower casing, and a cavity formed between the lower and upper casings. The upper casing has a through hole communicated with the cavity and a first capillary tissue disposed on the internal surface of the upper casing. The first capillary tissue has a penetrating hole corresponsive to the through hole. The heat pipe includes a tube and a second capillary tissue disposed in the tube and extended out from the tube to define an exposed section, and the heat pipe is passed and coupled to the through hole, and the exposed section is passed through the penetrating hole to attach to the first capillary tissue. The working fluid is filled in the cavity.

Abstract: A gearbox system includes a gearbox having a housing. The housing includes a surface. The gearbox system also includes an add-on cooling fin panel in thermal engagement with the surface. The cooling fin panel includes a plurality of cooling fins. The gearbox system further includes an attachment feature constructed to affix the cooling fin panel to the gearbox. The cooling fin panel is constructed to transfer heat from the surface to the cooling fin panel by conduction; and the cooling fin panel is configured to transfer heat to an environment in which the gearbox is located by convection.

Abstract: An inductor and an electronic device including the same are provided. The inductor includes: a coil in which an electric current flows; and a core that the coil is wound around, wherein the core includes a central portion that the coil is wound around; extensions extending from opposite edges of the central portions; and lateral portions extending from the extensions along the circulation path of the magnetic flux and facing the central portion with the coil disposed there between, and a first height at a first position of the extension portions on the circulation path of the magnetic flux spaced away from the edges of the central portion by a first distance which is larger than a second height at a second position on the circulation path of the magnetic spaced away from the edges of the central portion by a second distance which is longer than the first distance.

Abstract: A heat dissipation device includes a covering member, a heat pipe, and a heat dissipation unit. The covering member has a hollow C-shaped fitting portion, in which the heat pipe is fitted to tightly connect to the covering member. At least one first heat transfer portion is outwardly extended from a periphery of the C-shaped fitting portion of the covering member. The heat dissipation unit has a plurality of parallelly spaced heat radiation fins, each of which has a through hole formed thereon, and at least one first locating slot is outwardly extended from the through hole. When the C-shaped fitting portion and the first heat transfer portion are respectively extended through the through holes and the first locating slots, the covering member is connected to the heat dissipation unit. With the first heat transfer portion, the heat dissipation device can have enhanced heat transfer and dissipation effect.

Abstract: A Non-Isotropic Structure for a Heat Exchanger (NISHEX) that forms fins from nested woven wire meshes. The wire meshes are shaped into channels that are stacked on top of each other to produce a non-isotropic fin structure having multiple fin layers. The fin structure exhibits a high heat coefficient while maintaining relatively high fin efficiency through the selection of fin lengths in proportion to the wire diameter in the mesh fins.

Abstract: A heating element cover component includes a hollow outer shell portion of a required length, having required rigidity and thermal conductivity, a substantially half-pipe shaped abutting portion formed with a required thickness on the outside of the outer shell portion in a longitudinal direction of the outer shell portion, having flexibility and thermal conductivity, and with a slit penetrating in a thickness direction formed over the entire length in the longitudinal direction, a connecting portion having flexibility and thermal conductivity, connecting opposed edges of the abutting portion in the longitudinal direction with the outer shell portion, and an engaging portion constituted with a projecting piece and a projecting piece inserting portion being engaging elements disposed at line-symmetrical positions using a longitudinal straight line located at a widthwise middle of the abutting portion as an axis of symmetry to form a pair structured to be engageable with each other.

Abstract: A reactor includes: a reaction-side flow passage through which a fluid as a reaction object flows; and a catalyst structure provided in the reaction-side flow passage. The catalyst structure includes: a body part formed in a raised and depressed plate shape to partition the reaction-side flow passage into a plurality of flow passages disposed side by side in a direction perpendicular to a flow direction of the fluid; a catalyst carried on the body part to promote a reaction of the fluid; and one or more communication holes (grooves) to make the plurality of flow passages partitioned by the body part communicate with each other.

Abstract: A liquefied gas system and method can supply gas from a liquefied gas container more efficiently by using an external stabilizing device. The liquefied gas is located under its own vapor pressure in the lower portion of the container. As the vapor is withdrawn from the container at ambient pressure, the liquid evaporates at an equivalent rate to account for the decrease in pressure. The stabilizing device surrounding the liquefied gas container efficiently transfers the ambient external heat to the liquid thus allowing more liquefied gas to be vaporized.

Abstract: A thermal interface material assembly generally includes a substrate and one or more pillars protruding outwardly away from the substrate. A thermally-conductive heat path is at least partially defined by the substrate and the one or more thermally-conductive pillars, whereby heat may be transferable along the thermally-conductive heat path from a heat source of an electronic device.

Abstract: A heat sink fin that has a first substrate. The first substrate includes a first angular dimple and a first micro air channel in fluid communication with the first angular dimple. The first angular dimple includes a first surface that forms an angle relative to a first plane of the first substrate. The first angular dimple includes a first micro diameter hole in fluid communication with the first angular dimple. The heat sink fin also has a second substrate folded against the first substrate. The second substrate includes a second angular dimple and a second micro air channel in fluid communication with the second angular dimple. The second angular dimple includes a second surface that forms an angle relative to a second plane of the second substrate. The second angular dimple includes a second micro diameter hole in fluid communication with the second angular dimple.

Abstract: A process to fabricate a fin for a heat sink includes creating an array of micro diameter holes on a substrate, and then coupling the substrate to a mold. The mold includes angular dimples such that one or more of the micro diameter holes on the substrate come into contact with the angular dimples in the mold, thereby forming an angle between the micro diameter holes and a surface of the substrate. The process further includes placing the substrate onto a plate. The plate includes micro air channels such that the micro air channels are in communication with the micro diameter holes. In another embodiment, two pieces of substrate, each with micro diameter holes and embossed micro air channels are coupled together to form a fin.

Abstract: A heat exchanger includes two headers and tubes secured to and extending between the headers, each tube including a wall formed with a leading surface, a trailing surface and lateral surfaces extending between the headers and interconnecting the leading and trailing surfaces, a passage enclosed by the wall for carrying fluid between the headers, and long and short fins formed integrally with and extending outward from the wall.

Abstract: A heater is provided with a heater core having a source of thermal energy in a heat exchange relationship with a heat exchanger. A fan moves air through the heater core from an air inlet to an air outlet. The heater core is thermally insulated by an air jacket from an exterior case.

Abstract: The invention relates to an ethylene cracking furnace having a multi-pass radiant coil, comprising at least one radiant section. In the radiant section there are provided with bottom burners and/or sidewall burners, and at least one set of multi-pass radiant coil longitudinally arranged in the radiant section. The multi-pass radiant coil is a four- to ten-pass type radiant coil. At least one tube of the multi-pass radiant coil is arranged to be spatially adjacent to a tube which is not consecutive to said at least one tube. With this arrangement, the thermal radiation influence between tubes with high temperature can be reduced, so that the tubes with low temperature can absorb the radiation heat from the tubes with high temperature. Therefore, the surface temperature of the tubes with high temperature can be reduced, thus extending the lifetime of the radiant coil and the operational cycle of the cracking furnace.

Abstract: Multi-scale turbulation features, including first turbulators (46, 48) on a cooling surface (44), and smaller turbulators (52, 54, 58, 62) on the first turbulators. The first turbulators may be formed between larger turbulators (50). The first turbulators may be alternating ridges (46) and valleys (48). The smaller turbulators may be concave surface features such as dimples (62) and grooves (54), and/or convex surface features such as bumps (58) and smaller ridges (52). An embodiment with convex turbulators (52, 58) in the valleys (48) and concave turbulators (54, 62) on the ridges (46) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.

Abstract: A tube-and-fin assembly comprises a generally elliptical, cylindrical, elongated aluminum tube and a plurality of aluminum fins. Each fin extends outward from a side of the tube body to an apex. The aluminum assembly has a ratio of fin height to fin density (Mokire ratio) of between about 0.3200 and about 0.4125. The fin height is about 6.4 mm to about 6.6 mm and the fin density is about 16 to 20 fins per inch (FPI). The fins may be part of a corrugated sheet affixed to either side of the tube. The aluminum assembly achieves heat transfer performance similar to that of copper assemblies while maintaining a similar space claim.

Abstract: A heat sink which is mounted in a movable body and which is to be exposed to a traveling air stream generated while the movable body moves includes a base and a heat dissipating portion having a plurality of fins. At least in a front end portion of the heat dissipating portion, the heat dissipating portion includes a rectifying portion provided so as to extend across a predetermined area in a longitudinal direction in front portions of slit-shaped flow paths at an upstanding end (i.e., an end apart from the base).

Abstract: A syngas cooler that includes an outer wall defining a cavity. A first membrane water wall is positioned within the cavity. A thermal siphon is positioned between the first membrane water wall and the outer wall and is configured to channel a flow of syngas therethrough to facilitate cooling the channeled syngas.

Abstract: Improvements in tubes, which increase the heat exchange capacity of tubular heat exchangers using the tubes, are described. These improvements involve the use of one or more external surface enhancements, optionally combined with an internal enhancement and/or differing tube geometries. These improvements apply, for example, to internal condensers, including those in which the tube bundles are oriented vertically, in vapor-liquid contacting apparatuses such as distillation columns.

Abstract: A heat exchanger tube (1), wherein a plurality of refrigerant passages (5) extending in the longitudinal direction of the tube are formed in a flat tube body (2) with a specified length parallel with each other in the lateral direction of the tube and, where the overall cross sectional area of the tube body (2) is (At), the overall cross sectional area of the refrigerant passage (5) is (Ac), the outer peripheral length of the tube body (2) is (L), and the overall inner peripheral length of the refrigerant passage (5) is (P), set so that the relation of Ac/At×100=30 to 55 and P/L×100=150 to 325 can be established, whereby a heat exchanging performance can be increased.

Abstract: A heat exchanger, illustratively utilized in a fuel-fired pool heater, circumscribes a burner operative to discharge hot combustion gases outwardly through the heat exchanger. The heat exchanger has a tube portion helically coiled about an axis, with a series of heat transfer fins circumscribing the tube portion and spaced apart along it length. The fins on longitudinally adjacent pairs of coils of the tubing have nested facing edge portions which collectively form a seal area that coils between the tubing portion adjacent coil pairs in axially spaced relationships therewith, the seal area substantially impeding combustion gas flow therethrough in a direction generally transverse to the axis of the heat exchanger. Additionally, the fins have deformed laterally outer portions that define a coiled, circumferentially spaced series of restricted combustion gas outlets in substantial axial alignment with the helically coiled tube portion.

Abstract: A fin (3) of a fin-tube heat exchanger (1) has protuberances (5) each disposed between two adjacent heat transfer tubes (2, 2) and holes 8 (cut-outs) each formed upstream of the protuberances (5). Each of the protuberances (5) has, as an upstream portion adjacent to the hole (8), a wing portion (6) tapering toward an upstream side.

Abstract: An isothermal chemical reactor (1) comprising an array of radially arranged plate-like heat exchange elements (11) inside a reaction space, each element comprising feeding and collecting ducts and a bundle of parallel tubes (15) defining channels (12) for a heat exchange medium, the tubes (15) having an elongated cross section and being disposed with a variable orientation relative to the radial direction of the reactor, so that inner tubes near the axis of the reactor have the cross-section major axis aligned with said radial direction, and outer tubes have the same axis perpendicular to the radial direction. The preferred structure of a plate-like heat exchange element is also disclosed.

Abstract: A system for an engine is provided herein. The system includes a primary passage, a suction passage, and an outer casing coupling the primary and suction passages such that a primary axis is orthogonal to a suction axis. The system further includes a jet pump assembly coupled to the primary passage forming an annular channel between the outer casing and the jet pump assembly. Further, the jet pump assembly includes a flow divider positioned opposite from the suction passage within the annular channel.

Abstract: The invention provides a heat exchanger having a fin with an optimum thickness, and thus being capable of providing a superior cooling effect while having an excellent workability. A heat exchanger is designed to be mounted on a construction machine used on a construction site and is configured to cool heated cooling water. The heat exchanger includes a tube that allows the cooling water to flow therein, and a fin that is joined to the tube and has an imperforate and planar heat radiation surface. The thickness of the fin is greater than 0.2 mm but is equal to or less than 0.4 mm. Further, aluminum is selected as the material for the tube and the fin. The tube and the fin are joined to each other with an aluminum brazing rod.

Abstract: Provided is a heat exchanger in which drainage performance of a tube and a fin is improved while preventing reduction in heat exchange efficiency. The heat exchanger includes: a tube having flat surfaces opposed to each other at a predetermined interval; and a fin including a bent portion and a flat portion which are alternately formed in a longitudinal direction, the bent portion being joined to the opposing flat surfaces of the tube. The fin has a predetermined lateral range (bent portion) in the bent portion which is brought into contact with one of the opposing flat surfaces, the predetermined lateral range being bent toward another of the opposing flat surfaces and joined to the another of the opposing flat surfaces, thereby forming a communication path.

Abstract: The present disclosure relates to automotive heat exchanger assemblies that may withstand high environmental temperature and pressures conditions. By providing a tube strengthener into the tubes at the areas of highest stress, the heat exchanger assembly may be strengthened so that it is substantially more efficient under typical operating conditions.

Abstract: Flat heat exchanger tubes having two narrow and two broad sides are shown and described, wherein the flat tubes can be manufactured from two continuous strips having a relatively large curve on one longitudinal edge of the strips and having a relatively small curve on the other longitudinal edge of the strips. The two strips can be arranged laterally transposed with respect to one another to form the wall of the flat tubes, so that the relatively large curve of the longitudinal edge of one strip holds in itself the relatively small curve of the longitudinal edge of the other strip to form the narrow sides of the flat tubes. The strips can be formed with at least one further contoured portion which extends in the longitudinal direction of the flat tubes and which improves cohesion of the flat tube.

Abstract: A heat exchanger with a plurality of stacked flat tubes and a collecting tank having a wall extending around the entire periphery of, and connected to, the end of the stacked flat tubes. A first medium may be distributed through the collecting tank and flat tubes. Internal inserts are in the flat tubes, with the inserts being bonded between the broad sides of the tubes and, in the region of connection of the tubes to the collecting tank, being configured to compensate for length changes in the stacking direction caused by temperature changes, as by recesses in connectors such as wave flanks or by corrugated wave flanks. The flat tubes with inserts such as described may be separately provided for use in manufacture of heat exchangers.

Abstract: A thermal cracking tube is adapted to suppress pressure losses while maintaining heat transfer promoting effect on the fluid inside the tube. The tube has a plurality of projections rows extending circumferentially along inner surface of the tube orthogonal to or as inclined with respect to the axis of tube, each of the projection rows including a plurality of projections provided on the tube inner surface. The tube is defined by S/10?D=0.2?0.7, h/D=0.02?0.05 and L/?D=0.04?0.5. D is inner diameter of the tube, h is height of projection A arbitrarily chosen in a projection row ?, L is length of circular arc of projection A in a direction orthogonal to tube axis, and S is area of a region R surrounded by projection A, phantom lines L1 and L2 (extending respectively from circumferentially opposite ends of projection A in parallel to tube axis) and projection row ? downstream from projection row ?.

Abstract: Improvements in tubes, which increase the heat exchange capacity of tubular heat exchangers using the tubes, are described. These improvements involve the use of one or more external surface enhancements, optionally combined with an internal enhancement and/or differing tube geometries. These improvements apply, for example, to internal condensers, including those in which the tube bundles are oriented vertically, in vapor-liquid contacting apparatuses such as distillation columns.

Abstract: In one aspect, a heat transfer unit is provided for increasing the temperature of process fluids, such as gas-phase fluids, having a Reynolds Number (RE) of at least about 275,000 with a low overall pressure drop and without exceeding the wall temperature limits of the material used to construct the heater. The heater generally includes a heater conduit having the gas-phase fluid flowing therethrough and a heat source, such as a radiant heat source, providing an inconsistent or variable heat flux along a length of the heater conduit where the heat source has a peak heat flux greater than an average heat flux.

Abstract: A solar energy collecting assembly useful for transferring solar heat to a heat utilizing system via heat transfer fluid flow, comprising anisotropic graphite sheets coupled to a pipe containing heat transfer fluid, and various configurations and embodiments. Methods useful for extracting collected solar heat and transferring said heat to a heat transfer medium.

Abstract: A tube is composed of a first plate and a second plate which are opposed and engaged with each other. In a first region on both end sides of the tube, the first plate is formed into a shape in which an edge portion of the first plate is laid along a bent portion of the second plate so that an outer wall face of the tube forms a continuous face. In a second region of the tube, the first plate is formed into a shape in which the edge portion of the first plate is laid between the edge portion of the second plate and the bent portion of the second plate.

Abstract: There is provided a method of manufacturing a heat exchanger, including a first step of mounting an end part of flat tube to a header, assembling the flat tube and fins, and sealing a part where the header and the end part is attached, and a second step of increasing an internal pressure of the flat tube to expand other part of flat tubes aside from the end parts with respect to the end part of the tube in order to make the fins and the other part of the flat tube in contact each other. According to this method of manufacturing, in the second step, the other part of the flat tube that passes through the fins is expanded, so that it is possible to mechanically join the flat tube and the fins, and a plate fin-type heat exchanger with high strength and heat exchange efficiency can be easily provided.

Abstract: In one aspect, a heat transfer unit is provided for increasing the temperature of process fluids, such as gas-phase fluids, having a Reynolds Number (RE) of at least about 275,000 with a low overall pressure drop and without exceeding the wall temperature limits of the material used to construct the heater. The heater generally includes a heater conduit having the gas-phase fluid flowing therethrough and a heat source, such as a radiant heat source, providing an inconsistent or variable heat flux along a length of the heater conduit where the heat source has a peak heat flux greater than an average heat flux.

Abstract: In a vehicular air conditioning apparatus, a first blower unit is connected by a connection duct to a side portion of a casing having respective air passages defined therein, and a second blower unit separate from the first blower unit is connected to a lower portion of the casing. In addition, air is supplied to the interior of the casing from the first blower unit and is cooled by a first cooling section of an evaporator, whereas air that is supplied from the second blower unit is cooled by passing through a second cooling section in the evaporator, which is separated from the first cooling section by a pair of first and second partitioning members.

Abstract: A system and method for generating and distributing a closed loop riparian geothermal energy infrastructure. This system fills the need for the average home to tie into an existing geothermal “grid” constructed along, adjacent to or underneath a riparian body. The user may not need to invest in the geothermal infrastructure necessary outside the home to enable a geothermal system inside a home. The user, instead, is responsible for creating the section of the geothermal system that exists in the interior home infrastructure. In one embodiment of the invention, the infrastructure comprises at least one distribution flow line having a forward line for a first phase and a return flow line for circulatory second phase. The distribution flow line is coupled to any point along a main flow line. The main line flow line is buried to a sufficient depth within a riparian body for converting the first and second phases.

Abstract: A heat transfer tube (101) for a heat exchanger. The wall (120) of the heat transfer tube comprising at least one axially extending wing-shaped protrusion (104, 105) to provide the tube with additional heat transfer surface area. The wing shaped protrusion is formed by a process comprising at least one of: (i) folding the wall of the tube; and (ii) extrusion.

Abstract: A firetube having an elongated cylindrical shell is characterized by a plurality of circular rows of elongated U-shaped fins, each having a bottom surface, preferably curved along a radius or flat, secured to the inner surface of the cylindrical shell and two flat, planar, preferably parallel sides extending upwardly from the bottom surface, with the fins in each row aligned substantially parallel along the axis of the cylindrical shell.

Abstract: A heat exchanger, a reinforced header assembly for use in a heat exchanger, and a method of assembling a heat exchanger. The reinforced header assembly may include a header connectable with a tank to define a collection tank assembly, the header including a central portion defining a plurality of header openings, and a connecting portion connectable to the end of the tank wall such that the tank portion and the header cooperate to define the collection tank assembly, the connecting portion including a wall extending at a non-parallel angle relative to the central portion, and a reinforcement member including an inner portion defining a plurality of member openings, and an outer portion extending at a non-parallel angle relative to the inner portion, the outer portion being complementary to and connected to at least a portion of the wall of the connecting portion of the header.

Abstract: A heat exchanger for a gas boiler for producing hot water is provided with a casing extending along a first axis and through which combustion fumes flow; a tube forming a plurality of turns along which water flows arranged inside the casing so as to form gaps between adjacent turns; a disk for guiding said fumes trough the gaps; and teeth integrally made with the tube for spacing adjacent turns apart and forming said gaps.