Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.

Abstract: A high capacity snow melting apparatus has a hopper with one or a plurality of dedicated heater/blower units coupled to a plurality of commingled heat radiant conduits for contact with snow, ice and water, and manifolds connected to the conduits for additional heat exchange and to direct heated air onto snow in the hopper. Terminal sections of the conduits are elevated to an upper region of the hopper and have downwardly directed exhaust ports for substantial and efficient preheating of new snow loads. Heat exchanger passages through the heated air conduits allow water to flow in the path of heated air in the conduits to substantially increase snow and ice melting efficiency of the conduits. A water bath in the bottom of the hopper is level controlled to cover the conduits and drain water from the hopper.

Abstract: A heat exchanger for medical use, comprising a tube bundle formed by a plurality of tubes having a straight axis for the conveyance of a primary fluid, which are embedded at their ends in disks located at the end faces of an outer jacket which is adapted to delimit, together with the disks, a portion of space for the containment of the tube bundle which is designed to be crossed by a secondary fluid, each tube having, at least at a portion of its length, a plurality of consecutive crimps adapted to determine a progressive variation of the shape of the passage section.

Abstract: A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped strip may include a non-rectangular cross-sectional thickness having a central portion disposed between a first and a second end portion. The first and second end portions may extend generally outwardly from the central portion from generally opposite sides. At least a portion of the central portion may include a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip. The first and second end portions may include a first and a second cross-section thickness TS1, TS2, respectively, wherein at least one of the first and second cross-section thicknesses TS1, TS2 is greater than the cross-sectional thickness TC.

Abstract: Disclosed is a fin tube for thermal energy transfer of turbomachine exhaust including a tube disposable in an exhaust stream of a turbomachine and a plurality of fins extending from an outer surface of the tube. Each fin includes a plurality of adjacent fin segments which are separated by a serration. At least one fin segment of the plurality of fin segments includes at least one dimple thereon. The at least one dimple increases a turbulence of exhaust flow across the at least one fin segment and increases a surface area of the at least one fin segment thereby increasing a thermal energy transfer capability of the fin tube. Further disclosed is a combined cycle power plant utilizing the fin tube and a method for operating the combined cycle power plant.

Abstract: A method of forming a plurality of protrusions on the inner surface of a tube to reduce tube side resistance and improve overall heat transfer performance. The method includes cutting through ridges on the inner surface of the tube to create ridge layers and lifting the ridge layers to form the protrusions. In this way, the protrusions are formed without removal of metal from the inner surface of the tube, thereby eliminating debris which can damage the equipment in which the tubes are used.

Abstract: A syngas reforming reactor has a shell-and-tube configuration wherein the shell-side fluid flow path through the tube bundle has a longitudinal configuration. The reactor can include a shell-side inlet fluid distributor plate below the lower end of the tube bundle, and a flow sleeve in an enlarged-diameter discharge annulus at an upper end adjacent the tube sheet to prevent short-circuiting of the shell-side fluid into the shell-side fluid outlet. The tube bundle can include a plurality of ring baffles and lattice baffles. The longitudinal flow configuration can provide a lower shell-side pressure drop and lower cost compared to a conventional cross-flow reforming exchanger.

Abstract: Tubing having internal fins projecting inward from the tube wall, each fin having an external surface that includes multiple acute interior angles or crevices that may form nucleation boiling sites, heat exchangers comprising such tubing, and methods of making same. Acute angles, crevices, or elongated slits may be formed in the sides, center, or both, of the fins or between the fins and the tube wall, and convex rounded surfaces may be provided therebetween. Fins may be parallel to the tube centerline or helically wound. Tubing may be expanded with a bullet which may form an interference fit with external fins, may modify the fins to create more effective nucleate boiling cavities, or both.

Abstract: A thermal energy exchanger for a heating, ventilating, and air conditioning system is disclosed, the thermal energy exchanger includes a phase change material disposed therein, whereby the phase change material is at least one of encapsulated by a thermally conductive material and impregnated with a thermally conductive material.

Abstract: Disclosed is a device for exchanging heat, especially for cooling the combustion air of internal combustion engines in motor vehicles, which is characterized by the fact that the flow devices (14) are accommodated in an profiled housing (6) comprising at least two parts. The cross section of a first housing part (6a) is essentially U-shaped, said basic shape being closed at the open end of the first housing part (6a) by means of a second, substantially planar housing part (6b). The inventive device is further characterized by the fact that the housing (6) comprises at least one inlet flange and at least one outlet flange for the second medium at two opposite sides while the flow devices (14) are kept at a distance from each other in at least one area by means of at least one frame device (12) which is accommodated within the housing (6).

Abstract: Heat exchanger tubes are disclosed herein. An embodiment of a heat exchanger tube includes a tube body having two opposed sides. A plurality of exterior flow passages is defined in the tube body adjacent one of the two opposed sides. A plurality of interior flow passages is defined in the tube body adjacent the plurality of exterior flow passages. The plurality of exterior flow passages has at least one of an average hydraulic diameter or an average width that is i) greater than at least one of an average hydraulic diameter or an average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages.

Abstract: According to an aspect of the present invention a condenser comprises an aluminum tube. The aluminum tube comprises a first interior surface in thermal communication with a first fluid and a second exterior surface in thermal communication with a second fluid. In an alternate embodiment a refrigerator comprises a condenser. The condenser further comprises an aluminum tube. The aluminum tube has a first interior surface in thermal communication with a first fluid and a second exterior surface in thermal communication with a second fluid. Wherein the first surface further comprises internal fins and the second surface further comprises external fins.

Abstract: A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped strip may include a non-rectangular cross-sectional thickness having a central portion disposed between a first and a second end portion. The first and second end portions may extend generally outwardly from the central portion from generally opposite sides. At least a portion of the central portion may include a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip. The first and second end portions may include a first and a second cross-section thickness TS1, TS2, respectively, wherein at least one of the first and second cross-section thicknesses TS1, TS2 is greater than the cross-sectional thickness TC.

Abstract: An internally grooved heat transfer tube for a cross fin tube type heat exchanger of a refrigerating air-conditioning water supply apparatus using a high-pressure refrigerant, wherein an intra-tubular heat transfer rate is improved while maintaining a sufficient strength for pressure resistance. A heat transfer tube formed of copper or copper alloy has internal fins between internal grooves. In the tube, t/D is not smaller than 0.041 and not greater than 0.146, d2/A is not smaller than 0.75 and not greater than 1.5, where D [mm] is an outside diameter of the tube, t [mm] is a groove bottom thickness, d [mm] is a depth of each groove, and A [mm2] is a cross sectional area of each groove. N/Di is not smaller than 8 and not greater than 24 where N is a number of grooves, and Di is a maximum inside diameter corresponding to an inside diameter of the tube.

Abstract: The invention relates to a conducting device, in particular a corrugated fin, for a heat exchanger, having at least one surface. In order to improve the efficiency of heat exchangers, in particular of evaporators, the surface of the conducting device has an increased roughness, in particular microscopic roughness.

Abstract: According to one embodiment of the invention, a cooling system for a heat-generating structure comprises a chamber and structure disposed within the chamber. The chamber has an inlet and an outlet. The inlet receives fluid coolant into the chamber substantially in the form of a liquid. The outlet dispenses the fluid coolant out of the chamber at least partially in the form of a vapor. The structure disposed within the chamber receive thermal energy from the heat generating structure and transfers at least a portion of the thermal energy to the fluid coolant. The thermal energy from the heat-generating structure causes at least a portion of the fluid coolant substantially in the form of a liquid to boil and effuse vapor upon contact with a portion of the structure. The effusion of vapor creates a self-induced flow in the chamber. The self-induced flow distributes non-vaporized fluid coolant substantially in the form of a liquid to other portions of the structure.

Abstract: A heat exchanger tube that comprises a tubular member having a longitudinal axis and having an inner surface that is divided into at least two regions along the circumferential direction. A first plurality of polyhedrons are formed on the inner surface along at least one polyhedral axis. Each of the polyhedrons have four opposite sides. The polyhedrons have first and second faces that are disposed parallel to the polyhedral axis and have third and fourth faces disposed oblique to the polyhedral axis. The polyhedral axis is disposed at a first helical angle with respect to the longitudinal axis of the tube. A second plurality of polyhedrons is formed on the inner surface adjacent to the first plurality of polyhedrons. The second plurality of polyhedrons is disposed along at least one polyhedral axis. Each of the polyhedrons has four opposite sides. The polyhedrons have first and second faces disposed parallel to the polyhedral axis and have third and fourth faces disposed oblique to the polyhedral axis.

Abstract: A non-metallic intercooler assembly includes an intake header tank, outlet header tank, and a multitude of non-metallic charge tubes which communicate airflow from the intake header tank to the outlet header tank. Several combinations of plastics parts are described. Tanks of intercoolers can be made from plastics today but with complicated clamping and sealing. Each tank in this description can be laser welded in place. Various combinations of laser opaque and laser transparent materials are utilized to achieve an effective laser welding assembly process. Intake systems for automotive use are widely made of plastic materials today and this description shows how those types of materials can be employed in an intercooler. Each non-metallic tube can be supported by a plastic fin feature whose primary function is to support the structure to promote airflow conditions favorable to heat transfer.

Abstract: A tube used for heat transfer has adjacent fins extending from an outer surface of the tube with a channel between the fins. The fins include a roof formed over the channel, and holes penetrate the roof into the channel. The fin, including the roof, is monolithic with the tube body. Helical ridges are formed on a tube inner surface, and the tube body includes an indentation in the outer surface which extends the tube body inner surface towards a tube axis.

Abstract: A heat exchanger with at least one louver arrangement in the region between associated tubes for the heat transfer from one medium to another medium. The louver arrangement is provided with an inflow part and an outflow part corresponding to the inflow part. Both flow parts each have one outside louver, at least one intermediate louver and one inside louver, whereby the inside louvers are connected to each other and the louvers of one flow part are arranged inclined relative to the louvers of the other flow part and provided with louver geometry elements—length L, width B, angle of inclination ?—, whereby between adjacent inclined louvers each there are passage slots for the flowing medium. The louver arrangement is provided at least in one of both flow parts with at least one at least single-curved intermediate louver and/or at least one multiple-curved outside louver and/or inside as geometry elements.

Abstract: In devices known in the art, “conventional firetube” and “waste heat recovery” boilers each require many small tubes making successive passes within the boiler. In one embodiment of the invention, however, an enhanced conduit replaces numerous conventional small tubes. In some embodiments, the enhanced conduit incorporates a plurality of fins, each of which extends through a wall of the conduit. In other embodiments, the enhanced conduit incorporates a plurality of tubes along its outer surface, through which a heat transfer medium flows. Both designs enhance the heat transfer relationship between the hot fluid and the heat transfer medium by providing a continuous heat transfer relationship with the heat transfer medium, increasing the surface area involved in the heat transfer relationship and enhancing convection/conduction couples. For some applications, all of the tube banks of other devices in the art can be replaced by one continuous enhanced conduit.

Abstract: A natural gas dehydration and condensate separation system facilitating the transfer of heat energy between a heat energy exchanging subsystem in said system and the Earth. One or more coaxial-flow heat exchanging structures are installed in the Earth, for facilitating the transfer of heat energy in a natural gas stream between (i) the heat energy exchanging subsystem and (ii) the Earth. Each said coaxial-flow heat exchanging structure includes an inner tube section having an outer wall surface extending between the proximal and distal ends, and a thermally conductive outer tube section, disposed coaxially around the inner tube section, and having an inner wall surface extending between the proximal and distal ends. An outer flow channel is provided between the outer wall surface of the inner tube section and the inner wall surface of the outer tube section.

Abstract: A showcase having a fin-and-tube type cooler which comprises plural planar fins and a refrigerant pipe penetrating through the plural planar fins and cools air to be fed toward display racks, wherein the plural planar fins comprise long fins arranged in parallel to an air flow direction along which air flows through the cooler, and short fins that are shorter in length in the air flowing direction than the long fins and arranged between respective adjacent long fins at the downstream side of the cooler with respect to the air flowing direction.

Abstract: A quench exchanger and quench exchanger tube with increased heat transfer area on the process side of the tube are provided. The exchanger provides increased heat transfer efficiency relative to a fixed tube length and at the same time eliminates stagnant and low velocity areas as well as recirculation eddies. The tubes incorporate a fin profile on the process side of the tube with alternating concave and convex surfaces. Additionally, the fins are preferably aligned with the tube center line as opposed to being twisted or spiraled.

Abstract: The invention relates to a heat exchanger for motor vehicles, having a large number of flat tubes through which a liquid cooling medium can flow, and having corrugated fins which are associated with these flat tubes and to which environmental air or other media can be applied. The flat tubes having indentations pointing inward on at least one of their flat faces. Heat transfer between the core flow of the cooling medium and the flat tube walls is improved, and the power density of the heat exchanger is thus increased. The indentations are preferably in the form of elongated vortex generators.

Abstract: Disclosed is a process for devolatilizing a polymer including passing the polymer through a devolatizer including a plate heat exchanger wherein the plates of the plate heat exchanger are heated by a plurality of heating tubes and wherein the heating tube including a return tube nested inside of a supply tube. The use of the disclosed invention allows for a comparatively small heat profile across heating plates as compared to prior art plate heat exchangers.

Abstract: Grooved metal tubes, with a groove-bottom thickness Tf and outside diameter De, internally grooved with N helical ribs having an apex angle ?, height H, base width LN, and helix angle ?, two consecutive ribs being separated by a groove, generally flat-bottomed, having a width LR, with a pitch P equal to LR+LN, are characterized in that: a) the thickness Tf of the tube is such that Tf/De is equal to 0.023±0.005, Tf and De being expressed in mm, with De ranging between 4 and 14.5 mm; b) the ribs have a height H such that H/De is equal to 0.028±0.005, H and De being expressed in mm; c) the number N of ribs is such that N/De is equal to 2.1±0.4, and the corresponding pitch P is equal to p·Di/N, with Di equal to De?2·Tf, and De being expressed in mm; d) the base widths LN and LR are such that LN/LR is between 0.20 and 0.80; e) the apex angle ? ranges from 10° to 50°; and f) the helix angle ? ranges from 20° to 50°.

Abstract: The invention relates to a heat exchanger tube with at least one structured region on the inside of the tube, which has the following features: a) integral internal ribs of height H run on the inside of the tube in axially parallel or helical-line-shaped manner continuously over the circumference at an angle of inclination ?1, measured with respect to the tube axis, with primary grooves being formed, b) the internal ribs are crossed over the entire circumference of the tube by spaced-apart secondary grooves which, parallel to one another at an angle of inclination ?2, measured with respect to the tube axis, have a notch depth T2 and a groove opening angle ?2, c) the internal ribs and the secondary grooves are crossed over the entire circumference of the tube by spaced-apart tertiary grooves which run continuously over the circumference parallel to one another at an angle of inclination ?3, measured with respect to the tube axis, and have a notch depth T3 and a groove opening angle ?3.

Abstract: A heat exchanger tube having an integral restricting and turbulating structure consisting of dimples formed by confronting indentations pressed into the sides of the heat exchanger tube. The dimples are comprised of indentations disposed in pairs which extend into the tube to such a depth as is necessary to significantly reduce the cross sectional area of the heat exchanger tube and provide a pair of converging, diverging flow nozzles to promote turbulence of the flue gases. The turbulence characteristics of the tube can be controlled by varying the size of the aperture of the nozzles. In certain applications, the dimples are located along the sides of the heat exchanger tube, thereby providing unobstructed drainage for liquids even when the tube is bent into a serpentine shape.

Abstract: A heat exchanger that includes an extruded core member defining a plurality of spaced apart flow passages. The core member has first and second sides, one of said first and second sides defining a first set of flow openings communicating with the flow passages and one of said first and second sides defining a second set of flow openings communicating with the flow passages. A first unitary end cap connected to the first end of the core member has a first member sealing the first flow passage ends of at least some of the flow passages, and a second member extending from the first member partially over the side of the core member defining the first set of flow openings and defining at least one flow path between at least some of the first set of flow openings.

Abstract: A heat exchanger, preferably an oil cooler (1) for a motor vehicle, comprises stacked flat tubes (2, 3, 4), which have tube ends with apertures for admitting and discharging oil, which flows through the flat tubes (2, 3, 4) in their longitudinal direction. The apertures of adjacent flat tubes (2, 3, 4) are in fluid communication with one another in order to form flow passages, and spacings are left between the flat tubes for a medium, in particular a cooling medium, to pass through. The flat tubes are designed as extruded multi-channel tubes.

Abstract: A cold plate and a method of forming the cold plate are provided that efficiently and cost effectively cools electrical components. The cold plate includes a flattened tube formed from a circular extruded tube to have a top surface and a bottom surface that are substantially parallel and contiguously connected by rounded corners and defining an interior space. The circular extruded tube includes a plurality of ins extending into the interior space form inner walls thereof to form a plurality of channels in said flattened tube between said fins for defining a cooling liquid passage therethrough. The fins may extend parallel to the direction that the flattened tube extends, or extend at a predetermined angle to the direction that the flattened tube extends. Also, the fins associated with the top surface may extend at an angle to the fins associated with the bottom surface to form a plurality of intersecting points which form a torturous fluid flow path.

Abstract: A heat exchanger for use as an evaporator, for example, in refrigerators wherein a hydrocarbon refrigerant is used.

Abstract: A heat exchanging tube is provided with a flat tube main body having a predetermined length and a plurality of refrigerant passages extending in a tube longitudinal direction and arranged in a tube widthwise direction. The following relational equations (a) to (c) are satisfied: W=6 to 18 mm . . . (a); Ac/At×100=50 to 70% . . . (b) and P/L×100=350 to 450% . . . (c), where “W” is a width of the tube main body, “Ac” is a total cross-sectional area of the refrigerant passages, “At” is a total cross-sectional area of the tube main body ( including the refrigerant passages), “L” is an external perimeter of the tube main body and “P” is a total inner perimeter of the refrigerant passages. With this tube, enough pressure strength can be obtained and the passage resistance can be decreased while keeping the light weight, and further the heat exchanging performance can be improved.

Abstract: Ribbed heat exchange tubes in which the aspect ratio of the ribs is less than 5, provide greater indirect heat exchange than conventional heat exchange tubes with or without fins, when used in a slurry comprising a liquid phase, in which is dispersed flowing gas bubbles or particulate solids and flowing gas bubbles. The ribs, and typically also the longitudinal axis of the heat exchange tubes, are aligned in a direction parallel to, or spirally along the gas bubble flow direction. This is useful to increase either (i) the productivity of a slurry Fischer-Tropsch hydrocarbon synthesis reactor without an increase in the temperature in the reactor or (ii) increasing the production of higher molecular weight hydrocarbons by reducing the reaction temperature at a given feed conversion.

Abstract: A heat exchanger for a heating, ventilating and air conditioning system comprises a plurality of heat exchange tubes extending between a pair of spaced header tanks and arranged in groups of tubes with varying number of tubes in each group to cause a refrigerant to flow in multiple passes in the interior of the tubes across another fluid flowing on the exterior of the tubes. The heat exchange tubes comprise a plurality of flow passages having at least one corner formed by a pair of straight or arcuate sides with an included angle of less than or equal to ninety degrees, more preferably less than or equal to thirty degrees, to promote intense pool boiling within the flow passages. In addition to at least one corner region, the flow passage has a passage-specific optimal hydraulic diameter determined by the relationship between the optimal hydraulic diameter of the passage and the optimal hydraulic diameter of a baseline circular passage.

Abstract: An EGR cooler has tubes and a shell for enclosing the tubes. Cooling water is supplied into and discharged from the shell and exhaust gas from a diesel engine is guided into each of the tubes so as to conduct heat exchange of the exhaust gas with the cooling water. An inner periphery of each of the tubes is formed with spiral protrusions each having an inclination angle in a range of 26°–50° to a plane perpendicular to an axis of the tube.

Abstract: A heat exchanger includes a first section and a second section for cooling distinct fluids, wherein the second section is adapted for cooling oil. The heat exchanger includes first and second manifolds divided by baffles into first and second chambers. A plurality of tubes connect the manifolds in fluid communication with the first chambers to form the first section of the heat exchanger. A plurality of oil cooling tubes connect the manifolds in fluid communication with the second chambers to form the second section. The oil cooling tubes have a cross-section characterized by a performance ratio between about 3.9 and 8.5 wherein the performance ratio is the ratio of the wetted perimeter in millimeters divided by the cross-sectional area of tube metal in square millimeters. The oil cooling tubes may be formed of extruded metal with internal fins or an extruded tube having a stamped metal insert.

Abstract: A multi-tube heat exchanger capable of increasing heat exchanging performance without increasing its heat transmitting area, as well as avoiding a reduction in heat exchanging efficiency due to adhering pollutant or the like. The multi-tube heat exchanger includes an inner tube group through which a first fluid passes and an outer tube around which a second fluid passes. The heat transmitting tube is constituted of only a heat transmitting tube main body and a number of lump-like projections formed at a predetermined interval in the length direction on one or both opposing wall faces on longer sides of the heat transmitting tube main body. Longitudinal eddies are generated in high-temperature gas by the, thereby consequently increasing heat exchanging efficiency.

Abstract: A space heater with a linear source of infrared radiant energy in heat exchange relationship with a heat exchanger formed of copper or aluminum material. The copper is pretreated to soften the copper and partially blacken the surface thereof. The aluminum is anodized and electrolytically colored dark. The space heater is thermally more efficient than a comparable space heater wherein the copper or aluminum has not been pretreated. The linear source of infrared radiant energy and heat exchanger are mounted in a heater core that is thermally insulated by an air jacket from an exterior case.

Abstract: A method of forming tubing with integral fins oriented parallel to its length, and to a heat exchanger tube produced by such a method. The invention involves extruding a tube so that the tube has at least one internal longitudinal passage, an external surface having a cross-sectional shape in a plane transverse to the extrusion direction, and at least one integral fin parallel to the extrusion direction and extending in a direction away from the external surface of the tube. The tube may be one of a plurality of tubes assembled in parallel to a pair of manifolds, and such tubes are preferably oriented so that their integral fins are substantially parallel, with the fin(s) of a given tube extending toward an adjacent one of the tubes.

Abstract: A fluid cooler assembly comprises a vertically stacked first type and second different type of tubular panel subassembly construction integrated with a third subassembly of external corrugated fin construction positioned above and below each tubular panel subassembly. The first type tubular panel subassembly has an internal central flow region configured with a bilateral linear flow channeled subregion adapted for controlling the hydraulic behavior of the internal tubular coolant fluid flow. The second tubular panel subassembly has an internal tubular central flow channel region configured with a bilateral cross-flow channel region adapted for optimizing heat transfer.

Abstract: A plurality of beads protruding from an inner face of the tube are provided in such a manner that the beads are arranged at a predetermined pitch in an axial direction of the tube; and a circumference of the tube is divided at least into thirds, and the beads are aligned in a circumferential direction of the tube; and the beads aligned in the circumferential direction of the tube are provided at plural rows at the predetermined pitch in the axial direction of the tube, and the beads adjoining in the axial direction are shifted by substantially a half of a circumferential length of the bead to one another. Alternatively, the circumference of the tube is divided into parts of an even number of four or more, and the beads are aligned in the circumferential direction so as to be alternately formed in the parts of the circumference.

Abstract: A plurality of vessels contains pressurized gas. Each vessel fluidly communicates with an adjacent vessel through a line. A heat exchanger is positioned in a heat conducting relationship with each line. The system includes an exhaust valve communicating with lower pressure. In one embodiment, the vessels communicate in series and only one of the vessels communicates with the exhaust valve. Alternatively, the vessels are arranged in a loop configuration with two of the vessels communicating with the exhaust valve through respective lines each containing a shutoff valve. The two shutoff valves are opened and closed in concert to cause the flow in the system to alternate directions as it is being exhausted. In a third configuration, two vessels communicate through a singular line in accordance with the most basic embodiment, but the vessel communicating with the exhaust valve encloses the other vessel. Heat transfer fins are located in the enclosed vessel, and extend into the enclosing vessel.

Abstract: A heat transfer member having an external heat transfer member including an insertion hole having an adaptor ring inserted thereinto, and at least one of a base blocking protrusion and a grove blocking protrusion formed on a predetermined portion of the surface of the base confronting the inserted adaptor ring inside the insertion groove, for increasing the coupling strength of the external radiating member and the adaptor ring and the transition member.

Abstract: An integrated engine guard oil cooler is mounted to a motorcycle. The cooler is a hollow tube having an inlet, an outlet, a plurality of cross-sectional restrictions in its interior, and a plurality of radial cooling fins on its exterior. The tube has a shape such that, when the inlet and the outlet are mounted on opposite sides of the lower frame of a motorcycle, the tube extends outwardly from each side of the frame, then extends upwardly, and then extends inwardly to join and form an enclosed passageway. When the inlet and the outlet communicate with the oil reservoir of the engine, oil flows through the tube with successive pressure increases and pressure decreases as it passes the cross-sectional restrictions and heat from the oil is transferred to the ambient air through the radial cooling fins.

Abstract: A heat transfer assembly is disclosed which comprises at least one wall (1, 2, 3) which is adapted to separate a first fluid at a first temperature from a second fluid at a second temperature, and at least one fiber member (6, 7, 8, 9) or plurality of them, each fibre member (6, 7, 8, 9) including at least one elongate fibre which extends substantially axially along the fiber member (6, 7, 8, 9) from the first fluid through the wall (1, 2, 3) and into the second fluid whereby in use heat is transferred from the first fluid to the second fluid or vice versa, and the entire heat transfer assembly or a part of it is assembled as a single unit by sewing/weaving/stitching technique.

Abstract: A heat exchanger comprising a heat exchange core (1) including a plurality of tubes (2) flowing a medium for heat exchange and a pair of tanks (4) to which ends of said tubes are connected, each tube formed by shaping a plate member (200) not clad with a row laminated brazing material and having a sacrifice layer (210) on an outer surface thereof and a plurality of recessed portions (203) formed on an outer surface of said sacrifice layer and filled with a brazing material (R).

Abstract: Heat exchange inefficiencies found in round tube plate fin heat exchangers are eliminated in an aluminum heat exchanger that includes first and second headers (20), (22) and at least one flattened tube (24), (70) extending between the headers (20), (22). A plurality of generally parallel tube runs are defined and each has opposite edges. A plurality of plate fins (26), (50) are arranged in a stack and each has a plurality of open ended slots (34), one for each run of the tubes (24), (70). Each of the tube runs (24), (70) is nested within corresponding slots (26) and the fins (26), (50) with one of the edges (40) of the tube runs extending outwardly of the corresponding fin (34). The assembly is brazed together.

Abstract: A heat exchanger (1) consists of a plurality of disks (4) which are assembled to form a heat exchanger block or disk stack (16) and which are formed in each case from sheets (22) joined together in pairs and enclose between them at least one cavity designed as a duct. The cavity is delimited by the insides of the sheets (22). In the duct, an internal fluid flows in the longitudinal direction of the disks (4) and, on the outside of the disks, an external fluid flows transversely to the direction of flow of the internal fluid. Each sheet (22) has elevations (26, 33?) out of the disk plane, which are formed by material deformation and are directed both into the inside of the disk and toward the outside of the disk, the elevations (33?) directed toward the outside of the disk being configured as elongate stamped-out portions.