Abstract: A method for manufacturing an evaporator for ice-making includes: a preparation step for preparing a plate member, a finger member, and a capillary tube, the plate member being provided with a through hole and formed as a developed view of a tube; an insertion step for inserting the finger member into the through hole so that the finger member at least partially passes through the through hole; a connection step for fixedly connecting the finger member to the plate member; an insert placement step for placing at least a part of the capillary tube on the plate member; and an evaporation tube formation step for forming an evaporation tube, which is provided with a refrigerant flow path through which a refrigerant flows, by bending the plate member into a tube shape and connecting end portions.

Abstract: A heat exchange unit for a solar photovoltaic panel comprising backing plate comprising U-channeling depressed in an upper surface thereof flexible tubing positioned within the U-channeling configured to carry fluid; and rear panel, the rear panel being positioned behind the backing plate, the rear panel having a reflective surface to reflect heat from the backing plate; wherein the heat exchange unit is configured to be positioned in thermal contact with a solar panel, with the flexible tubing between the backing plate and solar photovoltaic panel to facilitate heat exchange between the flexible tubing and the solar panel.

Abstract: A baffle for a fluid collection portion of a thermal transfer device can include a body having an inner perimeter, an outer perimeter, and an asymmetric feature, where the asymmetric feature is configured to create a pressure drop within the fluid collection portion of the thermal transfer device. The inner perimeter can be configured to be at least as large as an inner surface of a first wall that forms the fluid collection portion of the thermal transfer device. The outer perimeter can be configured to be no larger than an outer surface of a second wall that forms the fluid collection portion of the thermal transfer device.

Abstract: A heat exchanger comprises a seamless body, and the seamless body may include a substantially cylindrical configuration defining a radial direction, a circumferential direction, a longitudinal axis, a first cylindrical wall and a plurality of fins. Each fin may extend at least partially in the radial direction and helically along the longitudinal axis. Also, each fin may be at least partially hollow defining an internal flow passage, and each fin of the plurality of fins may be at least partially spaced away from an adjacent fin, defining an external flow passage.

Abstract: A thermal module having an integral body including a base seat with a raised section and a heat dissipation unit with a recess such that the raised section of the base seat fits into the recess of the heat dissipation unit to connect the heat dissipation unit with the base seat. An inner end of the recess is formed with at least one lateral protrusion extended toward an opposite end of the recess and at least one end of the raised section is formed with a groove corresponding to the protrusion, the protrusion being inserted in and connected to the groove.

Abstract: A reactor core for use in a chemical reactor includes first and second reactor core sections. Each core section includes heat transfer fluid conduits extending through the core section in a first direction, the lengths of the conduits defining a core section width. Each core section further includes spaced apart parallel plates arranged into a plate stack, with the conduits extending through the stack. Surfaces of the plates have a catalyst coating applied to them. The plates are rectangular and define a core section depth and a core section length, the core section depth being substantially smaller than both the core section width and length. Channels are defined by the spaces between adjacent plates, and are open to flow through the reactor core section in both the core section depth and length directions. The first core section is adjacent to the second core section in the depth direction.

Abstract: The invention relates to an exhaust gas treatment device for an exhaust system of a combustion engine, more preferably of a road vehicle, with a housing enveloping at least one interior space, and with at least one through-pipe penetrating the interior space without interruption and which at two fastening points distant from each other is connected to the housing in a fixed manner. For compensating thermally related expansion effects the through-pipe between the fastening points can comprise at least one expansion compensation section, in which a wall of the through-pipe comprises slits penetrating the wall alternating in circumferential direction and strips protruding relative to adjacent wall sections of the through-pipe.

Abstract: A method of manufacturing a twist beam axle assembly includes inserting a tubular sleeve within a twist tube, deforming a portion of the sleeve and the twist tube such that an outer surface of the sleeve engages an inner surface of the twist tube along at least a portion of the deformation, and fastening the sleeve to the twist tube.

Abstract: A heat exchanger includes a bundle of tubes, which can be inserted into a tubular housing. Exhaust gas can flow through the tubes. A coolant duct can be arranged between the tubes. The bundle of tubes can have at least one grid-like securing structure which supports the bundle in the housing. The behavior of the heat exchanger with respect to vibrations is affected by outwardly curved metallic springs attached to the bundle of tubes which may be deformed in the opposite direction to the insertion direction of the bundle into the housing. The spring force is directed against the housing in order to dampen vibrations. The heat exchanger can also include an elastic device for permitting a change in length caused by temperature changes.

Abstract: A heat exchange system includes a tubular fan air inlet portion and a tubular cooled air outlet portion connected to a first end of a tubular mid portion. The heat exchange system further includes a tubular hot air inlet portion and a tubular recycled fan air outlet portion connected a second end of the mid portion. Still further, the heat exchange system includes an integrally-formed, compliant heat exchanger tube extending between the hot air inlet portion and the cooled air outlet portion within the mid portion to define a heat exchanger first flow passage within the heat exchanger tube and a second flow passage outside of the heat exchanger tube but within the tubular mid portion. Methods for fabricating such heat exchange systems are also provided.

Abstract: A method for enclosing a heat pipe with metal is disclosed. The method includes the steps of: a) providing a tube made of a metal; b) putting the heat pipe in a hollow of the tube; and c) stretching the tube to shrink an inner diameter of the tube for tightly enclosing the heat pipe.

Abstract: A heat exchanger for an oxygenator comprises multiple tube sections, each having a longitudinal tube axis, wherein the tube sections are disposed as a bundle having a longitudinal bundle axis, and the tube sections are connected to each other in at least one connecting section of the bundle by joining by way of chemical and/or physical bonded joints. A method for producing the heat exchanger is also provided.

Abstract: During the manufacturing of heat-insulated pipes (1) with an inner duct (3) and an outer duct (2) and a foamed insulation (14) arranged in between, the inner duct is placed on a tension member (10). The latter is tensioned between tensioning means by means of a tensile force, such that it runs straight and that the inner duct is held straight. The latter is held on centering elements (16, 17) which are spaced from one another in a defined way by means of spacers (18). In this straight position the inner duct may be surrounded with foam inside of the outer duct, without needing spacers between the ducts.

Abstract: The heat exchanger (10) includes a ceramic matrix composite (12) (stable at temperatures up to 1,650° C.) surrounding and defining a hot fluid conduit (14). A hardenable material (18) having a high thermal conductivity is formed into a heat transfer layer (16) surrounding the ceramic matrix composite (12). A metal pipe (20) is coextensive with the heat transfer layer (16) and defines at least a portion (22) of at least one cool fluid passage (24, 34, 54) defined adjacent to and in heat exchange relationship with the heat transfer layer (16) so that a fluid passing through the cool fluid passage (24, 34, 54) absorbs heat passing through the heat transfer layer (16) from the hot fluid passing through the hot fluid conduit (14).

Abstract: A heat exchanger for a motor vehicle air-conditioning system is disclosed having an inner tube and with an outer tube. The outer tube at least partially encloses the inner tube in the longitudinal direction of the tube and form an intermediate space through which a heat exchanger medium can flow. Radially extending web at least partially divided the intermediate space into multiple flow channels between the inner tube and the outer tube. The multiple flow channels open in the longitudinal direction into a distributor or collector space formed through a radial tapering of the inner tube.

Abstract: A heat exchanger includes an inner tube extending longitudinally along a central axis and having an inner surface bounding a product chamber and an outer surface having a plurality of channels disposed at circumferentially spaced intervals in alternating relationship with a plurality of fins about the circumference of the outer surface of the inner tube; and a longitudinally extending outer tube disposed coaxially about and circumscribing the inner tube in radially spaced relationship, the outer tube having an inner surface contacting the plurality of fins of the inner cylinder, the outer surface being welded to the fins at a plurality of weld locations.

Abstract: Disclosed herein is a heat exchanger that includes a coiled outer tube, and a plurality of interlocking twisted tubes disposed within the coiled outer tube. Methods of making and using the heat exchanger also are described.

Abstract: The disclosure provides a heat transferring device and a method for manufacturing the heat transferring device. The heat transferring device includes: a flexible heat transfer substrate including a first surface, a second surface, at least one solid portion and at least one characteristic hole portion. The at least one solid portion is formed between the first surface and the second surface. The at least one characteristic hole portion includes several characteristic holes penetrating through the first surface and the second surface. The flexible heat transfer substrate further includes: a first end and a second end, and the second end is corresponding to the first end. The flexible heat transfer substrate is rolled from the first end towards the second end to form the heat transferring device with a predetermined shape.

Abstract: A heat exchanger is provided for a motor vehicle air-conditioning system with an inner tube and with an outer tube, which at least in regions encloses the inner tube in the region of a line portion subject to forming an intermediate space in tube longitudinal direction through which a heat exchanger medium can flow. The intermediate space at least in portions is subdivided into at least three flow channels with at least three webs running in tube longitudinal direction, which open into a distribution or manifold space formed through radial expansion of the outer tube, in which the webs compared with the line portion have a smaller extension in radial direction.

Abstract: A heat transfer element includes curved mounting surfaces configured to mate with an outer surface of a pipe for attachment thereto; and a channel configured to receive a tracer therein. The heat transfer element is configured to effect conductive heat transfer from the tracer to the pipe, or to process flowing through the pipe, when attached with heat transfer cement (HTC) to both the pipe and the tracer. A system includes a pipe and a tracer; HTC; and a heat transfer element having curved mounting surfaces configured to mate with an outer surface of the pipe and attached thereto via the HTC, and a channel in which the tracer is received and secured via HTC. The heat transfer element is configured to effect conductive heat transfer from the tracer to the pipe, or to process flowing through the pipe, when attached with HTC to both the pipe and the tracer.

Abstract: The present invention relates to a heat-dissipating device and a method for manufacturing the same. The heat-dissipating device includes a base and a first heat-dissipating fin. The outer periphery of the base has a trough. The first heat-dissipating fin has a first heat-dissipating portion, a first end and a second end. The first end and the second end are disposed in the trough. By a machining process, both ends of the first heat-dissipating fin are pressed into the trough of the base at a high speed, so that the base can be combined with the first heat-dissipating fin rapidly. In this way, the manufacture cost is reduced and the heat-dissipating efficiency is increased.

Abstract: A heat exchanger (10) cooling a fluid and a method for manufacturing, the heat exchanger (10) having an outer pipe section (12) in which a plurality of inner pipe sections (36) with channels for the fluid to be cooled are disposed. At least one cooling fluid channel (56) is disposed in the outer pipe section (12). The at least one cooling fluid channel (56) and the at least one channel for the fluid to be cooled are in heat contact and fluidically separated from each other. A plurality of inner pipe sections (36) open on both ends (38, 46) form of a pipe bundle (34) having ends fixed tightly in a corresponding lead-through opening (40) of an upstream end body (42) and fixed tightly with the other end (46) in a corresponding lead-through opening (48) of a downstream end body (50).

Abstract: Various embodiments provide an absorber tube that comprises an inner tube having an exterior surface, at least a portion of which contains a plurality of coating layers. The absorber tube also includes an outer tube spaced apart from the inner tube so as to define a cavity between the two. At least one of the coating layers may be configured to substantially impede migration of gaseous particles from the interior surface and into said cavity. At least one of the coating layers may be a reflective copper coating that is adhered to the exterior surface via an electrical charging process. An absorber tube comprising a connecting member between central and end portions of the tube is also provided. The central portion may be formed from carbon steel, while remaining portions are formed from stainless steel. Coating layers may be likewise adhered to only the central portion.

Abstract: Systems and methods for improving heat exchangers by implementing self-energizing seals. In one embodiment, a U-tube heat exchanger includes a shell enclosure, a tube sheet, a closure and a set of tubes welded to the tube sheet. The tube sheet separates first and second chambers from a third chamber in the shell enclosure. The closure seals the first and second chambers. Each tube extends from the first chamber, through the third chamber to the second chamber. The improvement comprises a seal between the shell enclosure and either the closure or the tube sheet. The seal includes conically tapered sealing surfaces on the shell enclosure and closure or tube sheet which form a wedge-shaped gap. A seal ring having surfaces complementary to the sealing surfaces of the shell enclosure and closure or tube sheet is positioned between the sealing surfaces to form a self-energized seal.

Abstract: A method of forming a tube for a heat exchanger includes advancing an expansion tool into a tube a first time and engaging the expansion tool with the tube to expand the tube diametrically at least partially along a length of the tube. The expansion tool is at least partially retracted from the tube. The expansion tool is advanced into the tube one or more subsequent times thereby engaging the expansion tool with the tube one or more subsequent times to further expand the tube at least partially along the length of the tube.

Abstract: A shell and tube heat exchanger is disclosed that is comprised of a dense hexagonal bundle of tubes with tube spacing maintained by spacers on the individual tubes. Exchanger performance is enhanced by any or all of three types of bends of the tubes: bundle twisting; bundle enlargement at the tubesheets; and shell bending. Referring to FIG. 7, the spacing enlargement bending is illustrated.

Abstract: A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes an inner tube configured to carry a heat exchanger medium and an outer tube that at least regionally envelops the inner tube with an intermediate space between the inner tube and the outer tube. A separating web extends between the inner tube and the outer tube and is configured to divide the intermediate space into at least two flow channels. In an axial section of the inner tube and the outer tube, the separating web fluidically couples the flow channels with each other as viewed in a circumferential direction of the inner tube.

Abstract: An exhaust gas treatment device for internal combustion engines and the like includes inlet and outlet end caps, two catalyst substrates, and a two-piece housing. A first, cylindrically-shaped housing member has a hollow interior in which one of the substrates is retained, a first end sealingly connected with the inlet end cap, and an opposite second end with a radially reduced section. A second cylindrically-shaped housing member has a hollow interior in which the other one of the substrates is retained, a first end sealingly connected with the outlet end cap, and an opposite second end with a radially enlarged section sized to receive therein the second end of the first housing member, whereby the reduced section of the first housing member and the enlarged section of the housing member are spaced radially apart a predetermined distance to define an annularly-shaped space or gap which thermally insulates the associated portion of the exhaust gas treatment device.

Abstract: A method for manufacturing a double walled pipeline comprises providing a pipeline section including an inner tubular member and an outer tubular member, providing a coupling member, and controlling the stress distribution in the inner tubular member and the outer tubular member by coupling the inner tubular member and the outer tubular member directly to the coupling member.

Abstract: Flattened fluid conduits for use in heat exchangers and other systems, and associated methods of manufacture and use are disclosed herein. In one embodiment, the fluid conduit for use in heat exchangers can be manufactured by inserting two or more inner tubes into a circular or at least partially circular barrier tube and at least partially flattening at least some length of the assembly. The heat exchanger conduit can include one or more void spaces within the barrier tube and adjacent to the inner tubes which serve to contain any leaks in the inner tubes and vent any leaks to the atmosphere.

Abstract: A high-efficiency solar radiation collection and conversion system is described. An array of evacuated collector tubes each includes two or more inner heat pipes that capture the solar energy and conduct it as heat through a condenser portion into a manifold that operates as part of a closed-loop circulation system. In another part of the loop, a heat exchanger transfers the heat into a hot-water holding tank or otherwise applies the heat energy in the circulating fluid.

Abstract: A method of manufacturing an oil cooler for an automatic transmission includes: forming an inner pipe and an outer pipe, welding the plate and cutting the pipe; forming a boss using a cold forged rod; forming a brazing washer; forming a flow hole in both ends of the outer pipe and pass oil through the flow hole; compressing and fixing the brazing washer and the boss; forming a heat radiation fin; assembling the outer pipe in which the boss is fixed, the heat radiation fin plated with copper, and the inner pipe; sequentially expanding the inner pipe at its both ends in the radial direction; closely contacting the heat radiation fin with the inner pipe and the outer pipe; mounting brazing rings in the both expanded ends of the inner pipe and mounting a workpiece of the oil cooler in a brazing jig.

Abstract: A manifold for a heat exchanger includes a header radially surrounding and in spaced relationship to an axially extending distributor conduit. The distributor conduit is formed by bending the sheet along the leading edge, and the header is formed by bending a remainder of the sheet including a trailing edge about an axis in radially spaced relationship to the distributor conduit. The cross sections are completed and closed by placing the leading and trailing edges into contact with, and sealing the edges to the sheet.

Abstract: A method of manufacturing a double pipe includes a step of inserting a straight inner pipe into a straight outer pipe such that the inner pipe and the outer pipe are positioned at a predetermined relative position, a step of fixing a first end portion of the outer pipe to the inner pipe so as to form a first fixing portion, a step of bending the outer pipe and the inner pipe at the same time at a predetermined portion so as to form at least one bending portion after the fixing step of the first end portion, and a step of fixing a second end portion of the outer pipe to the inner pipe so as to form a second end portion after the bending.

Abstract: A compound tube is disclosed that includes an outer tube and an inner tube disposed in the outer tube. A passage is defined between the outer tube and the inner tube. Various methods of joining the outer tube to the inner tube are disclosed.

Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be readially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.

Abstract: A double-wall-tube heat exchanger has outer and inner tubes. A clearance between the outer and inner tubes and the interior of the inner tube serve as refrigerant flow paths. Opposite end portions of the inner tube project from opposite ends of the outer tube. The outer tube includes expanded portions formed near the opposite ends. Contracted portions are formed on the outer tube to be located on the outer sides of the expanded portions, and are brazed to the inner tube. Longitudinally extending ridges project radially inward from the inner circumferential surface of the outer tube at predetermined circumferential intervals. The ridges on the inner circumferential surfaces of the expanded portions and the contracted portions are crushed. The clearances between the inner tube and portions of the contracted portions of the outer tube where the ridges are not formed are filled with a brazing filler metal.

Abstract: A heat exchanger shell assembly comprising an outer shell having a nozzle at its lower side; an inner shell member within the outer shell and forming an intermediate space with the outer shell, the inner shell member having an opening at its lower side; wherein the arrangement further comprises a seal member arranged to fit in the intermediate space, the seal member providing a sealed passageway for fluid between the opening and the nozzle, and a method of assembling a heat exchanger shell structure, and a method of assembling a heat exchanger shell structure, comprising sliding an inner shell member into an outer shell, to form an intermediate space, arranging the inner shell member in a lifted position in the outer shell; sliding a seal member into the intermediate space; and lowering the inner shell member so that the gravity force exerted on the seal member acts as sealing force.

Abstract: A method of making a heat pipe includes the steps of: providing a mandrel, a capillary wick and a straight tubular shell; inserting the mandrel and the capillary wick into the shell; cramming powder into the shell, wherein the powder can be sintered between the shell and the mandrel; sintering the shell having the mandrel, the capillary wick and the powder therein; and drawing the mandrel out of the shell and filling working media into the pipe, and vacuuming and sealing the pipe. The mandrel defines a longitudinal slot therein, and the capillary wick is positioned in the slot.

Abstract: An in-line heat exchanger comprising first and second lengths of seamless, walled tubing, the first length of tubing characterized by a larger diameter than the diameter of the second length of tubing, and the second length of walled tubing disposed within the first length of walled tubing. A plurality of longitudinally-extending channels are defined in the wall of at least one of the first and second lengths of tubing, the channels defining therebetween a plurality of longitudinally-extending passageways in the area between the walls of the first and second lengths of tubing.

Abstract: An adjusting mechanism adjusts a boat to be parallel to a furnace having an opening and a receiving space, which has a first symmetrical line. When the boat having a second symmetrical line is inserted into the space, a first gap area is formed between sidewalls of the space and the boat. The mechanism includes an adjusting element and an adjusting tool, which is removably disposed in the opening and has a wide part, a narrow part and a through hole. The narrow part blocks the opening. When the boat is inserted into the space, a second gap area smaller than the first gap area is formed between the sidewalls of the boat and the through hole at the narrow part. The adjusting element adjusts the first and second symmetrical lines to be parallel to each other according to the second gap area.

Abstract: A catalytic converter comprises an outer tube, a pair of catalyzed substrates positioned in the outer tube, and a heat shield positioned in the outer tube between the catalyzed substrates. A method of assembling the catalytic converter is also disclosed.

Abstract: A shielded heat exchanger and method of use in a vehicle is disclosed. The shielded heat exchanger may comprise a pair of spaced apart headers configured to contain a fluid flowing through the shielded heat exchanger, and a shielded tube. The shielded tube extends between the pair of headers and has a front edge. The shielded tube includes a flowing channel that operatively engages the headers for fluid flow through the flowing channel between the headers and a shielding channel extending parallel to the flowing channel between the headers along the front edge of the shielding tube, with the shielding channel configured to prevent flow of the fluid from the headers into the shielding channel.

Abstract: A wound process element and method of assembly wherein at least one dimpling element is positioned between the outer perimeter of a wound element strip and an outer holding band.

Abstract: The heat exchanger is made economically by pressure-forming cavities in relatively thick thermo-plastic panels, interleaving them with other thermo-plastic panels having separate gas flow conduit structures, and securing the panels together. Preferably, the heat exchanger is an opposed-flow-heat-exchanger giving improved heat-transfer efficiency.

Abstract: A powder feeding apparatus of manufacturing a heat pipe includes a vibration tray having a supporting board and a plurality of pipes positioned in the supporting board of the tray. A mandrel is coaxially inserted in each of the pipes. A feeder is located corresponding to an end of each pipe for feeding powder into the pipe. A vibration source drive the tray to vibrate along a direction perpendicular to an axial direction of each of the pipes when feeding the powder into the pipes from the feeders, whereby the pipes vibrate with substantially the same amplitude in the vibration direction.

Abstract: A pipe expansion method capable of reducing an inspection range (area) of a heat-transfer pipe secured to a pipe plate and capable of shortening the time required for inspection is provided. In a pipe expansion method for securing a heat-transfer pipe inserted in a pipe hole of a pipe plate by expanding the pipe, after tightly fitting an outer circumferential surface of the heat-transfer pipe to an inner circumferential surface of the pipe hole from a primary-side end face to a secondary-side end face of the pipe plate, surface pressure between the heat-transfer pipe and the pipe plate is further increased in a predetermined range from the secondary-side end face, or close to the secondary-side end face, towards the primary-side end face.

Abstract: A powder feeding apparatus and a method of manufacturing a heat pipe are disclosed. The method includes: a) proving the powder feeding apparatus including a vibrating tray and a pump (800); b) positioning a tube in the vibrating tray; c) inserting a mandrel (400) into the tube from a first open end of the tube, wherein at least one groove (410) is defined in an end of the mandrel corresponding to a second open end of the tube; d) positioning a feeder (300) on the first end of the tube; e) driving the vibrating tray to vibrate and feeding powder into the tube from the feeder whilst the pump is operating to generate a forced airflow flowing from the first to the second open end of the tube. By using this method, bridging of the powder is prevented.

Abstract: A method for manufacturing a hydrogen generator of the present invention is a method for manufacturing a hydrogen generator including: a water evaporator which has an inner tube, an outer tube, and a spacer disposed between the inner tube and the outer tube and in which a passage defined by the spacer is supplied with water and a raw material and heated to generate a material gas containing steam; and a reformer which has catalyst and in which the catalyst is heated to generate the material gas containing the steam from the material gas containing the steam, and the method includes: a disposing step (S2) of disposing the spacer between the inner tube and the outer tube; and a tube expanding step (S3) of expanding the inner tube to form the passage defined by the spacer.

Abstract: A heat exchanger element has a row of multiple channel flat pipes (3) that are mutually spaced apart and have ends connected in a fluid-tight manner to a tubular connector container (6) and to a tubular distributor (1). The ends of the multiple channel flat pipes (3) are separated into multiple zones (3?, 3?) shaped in such a way that each zone (3?, 3?) is parallel at its end on the side of the connection to the main plane of the multiple channel flat pipes (3), and the zones (3?, 3?) overlap at least partially in the direction of the longitudinal axis of the collector container (6) and distributor (1).