Abstract: A method of assembling a syngas cooler is provided. The method includes coupling at least one cooling tube within the syngas cooler, wherein the at least one cooling tube includes an inner surface that defines a flow passage therethrough, an opposite outer surface, and at least one cooling fin extending outward from the outer surface, and orienting the at least one cooling tube such that the at least one cooling fin is in flow communication within a syngas flow passage defined in the syngas cooler, wherein the cooling fin facilitates enhancing heat transfer between fluid flowing in the at least one cooling tube and a syngas flow.

Abstract: Method for producing a heat exchanger with the following steps: a) hot dip refining a steel sheet to form a corrosion-protection layer (3), wherein the corrosion-protection layer (3) contains zinc and between 0.5% and 60% aluminum; b) removal of the corrosion-protection layer (3) from one side of the steel sheet; c) production of a heat exchanger tube (2) from this steel sheet, wherein the corrosion-protection layer (3) is arranged on the outside; d) provision of ribs (6) of aluminum or an aluminum alloy; e) provision of a flux; f) provision of a filler material (8) containing aluminum and silicon in the connecting region between the ribs (6) and the outside of the heat exchanger tube (2); g) connection of the heat exchanger tube (2) to the ribs (6) in a brazing operation.

Abstract: In a method of manufacturing heat radiating fin, the technique of plastic working, such as stamping, is employed to apply an external force against a sheet metal material serving as a raw material for forming the heat radiating fin, so that the sheet metal material generates plastic deformation to form a plurality of recessed portions on a front side thereof. Meanwhile, a plurality of protruded portions is correspondingly formed on a rear side of the sheet metal material behind the recessed portions. Any two heat radiating fins so manufactured may be easily stacked and connected together with the protruded portions on a rear or higher heat radiating fin partially extended into the recessed portions on a front or lower heat radiating fin.

Abstract: A method and equipment for making a needle-fin tube having needle-like external fin parts, and internal fin structure formed by a spiraled spring wire which expands to clamp again the tube in the needle-fin tubes. The wire used to form the internal fin is wound along and around a bar which is moved and rotated along a straight line. The bar is moved inside the needle-fin tube from its one end to the other and the wire is released from the bar to attach to the internal surface of the needle-fin tube under spring force.

Abstract: Disclosed is a method for integrating at least two heat transfer members to provide an integrated composite member, the method comprising: a) disposing the at least two heat transfer members in a mold cavity, such that said heat transfer members each have at least one exposed surface forming a surface of a resin injection cavity; and b) injecting a thermally conductive resin into the resin injection cavity to contact the exposed surfaces of the at least two heat transfer members, to form the integrated composite member; wherein the thermally conductive resin has a thermal conductivity of at least 0.7 W/mK or higher.

Abstract: According to a preferred embodiment, an improved method and apparatus for manufacturing tube and fin heat exchangers that includes a step for reducing the outer diameter of stock tubing to a value well below nominal prior to bending the tubing into hairpins. The reduced diameter increases the stiffness of the resultant hairpins and allows for efficient lacing of the heat exchanger fins and end plates. The method uses pre-size rollers that are adjustable for reducing the diameter of the tubing.

Abstract: The present invention provides a heat-dissipating device and a method for manufacturing the same. The heat-dissipating device includes a heat sink and a heat pipe. The heat sink has an end surface provided with a groove. The heat pipe is received in the groove. The heat pipe has a heat-absorbing surface and a heat-conducting surface. The heat-conducting surface is adhered to the inner edge of the groove. The heat-absorbing surface is in flush with the end surface. With this arrangement, heat resistance of the heat-dissipating device is reduced to improve the heat-dissipating effect thereof.

Abstract: A high performance cold plate cooling device including multiple, relatively thin plates, each having patterns formed thereon that, as arranged within the device, cause turbulence in a fluid passing within the cooling device. Adjacent plates within the cooling device are arranged such that fluid channels within their patterns are arranged crosswise. One or more barriers extending at least a portion of the length of the device separate the crosswise channels into two or more flow sections and increase uniformity of thermal performance over the active plate area. Manufacturing of the device includes stacking the plates in an alternating fashion such that the channels within the pattern of each plate are crosswise with respect to the channels in the pattern of an adjacent plate and adjacent barrier walls abut. A method of manufacturing a cooling device is also provided.

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: A method of fabricating a heat exchanger which includes: obtaining multiple coolant-carrying conduit sections, each having a non-circular cross-section, and first and second main surfaces; providing multiple primary folded fins secured to the conduit sections. Each folded fin includes a solid fin surface with multiple bends defining alternating, U-shaped air-passage channels, and a base surface and a top surface. Each folded fin is secured at the base or top surface to a main surface of a conduit section, and the folded fins have leading and trailing edges relative to airflow direction. The method includes forming a plurality of sets of secondary fins, each set extending from the leading or trailing edge of a respective folded fin at an angle other than 0. At least one conduit section has a first folded fin secured to its first main surface, and a second folded fin secured to its second main surface thereof.

Abstract: A bladed heat exchanger fin, tube assemblies in which the fin is installed, and methods of using the fin. The bladed fin includes a collar and a radial portion extending radially from an axis of the collar. The radial portion has a base region adjacent the collar and first and second sets of blades that radially extend therefrom. Each blade has a span-wise axis that is transverse to the axis of the collar. Each of the first set of blades is revolved about the span-wise axis thereof so as to have radial edges that are axially spaced from each other, and each of the second set of blades is not revolved about the span-wise axis thereof. At least some of the blades of the first set are between at least some of the blades of the second set.

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: An apparatus for assembling a heat exchanger core matrix has a tube feed means for feeding heat exchanger tubes to a support surface upon which the heat exchanger is assembled and fin feed means for feeding heat exchanger fins to the same support surface. Both the tube feed means and the fin feed means are located above the support surface and, in use, the apparatus is operable to sequentially and vertically feed the tubes and fins to the support surface via a common feed guide. This arrangement enables the manufacture of large format heat exchanger cores.

Abstract: In an embodiment of the invention, a slot is disposed at a side of a fin. Both sides of the slot separately extend two positioning portions. After a heat pipe is placed in the slot, a mold presses the fin to make the positioning portions bent inwards. The heat pipe is gripped by the deformed positioning portions. In another embodiment, peripheries of the positioning portions are formed into guiding grooves separately, and the mold is provided with two protrusions corresponding to the guiding grooves. The guiding grooves are inserted by the protrusions when the mold is pressing the fin. The part between the positioning portions and slot is inwards deformed to grip the heat pipe.

Abstract: A method for manufacturing a heat pipe and a capillary structure thereon is provided, and the steps of the method are as follows. A hollow pipe which has an open end and a closed end is provided. A mold is placed into the hollow pipe through the open end. The mold includes a central rod and a shaping component mating with the central rod, and the shaping component has an outward shaping surface. A powder is filled into the space between the hollow pipe and the mold through the open end and then sintered to form a capillary structure on the inner wall of the hollow pipe, in which the capillary structure has a profile corresponding to the shaping surface of the shaping component. Thereafter, the central rod and the shaping component are sequentially taken out of the hollow pipe.

Abstract: The invention relates to a method for manufacturing finned tubes made of metal, in particular heat exchanger tubes, where at least one continuous strip forming the fins is fed tangentially to a tubular body set into rotational motion, and wound onto it, the side of the strip facing the tubular body is connected to the tube surface by means of a welding device and using a filler material, and the strip to be wound is guided between guide discs just behind the welding area, said discs reaching close up to the tube surface and the welding point. To increase the service life of the guide discs, the guide discs are cooled, specifically with cooling water to which roughly 10% by volume of a welding release agent are added.

Abstract: A heat exchanger (20) comprising: a pair of generally planar, heat conducting plates (10) arranged in spaced, generally parallel relationship; spacing elements (22) separating the plates (10) from one another and defining first (26) and second (28) flow channels between the plates (10) for flow in a first direction and a second direction respectively; wherein the plates (10) in at least the first channel (26) are divided into fins (14), the fins being separated from each other in the first direction and being offset from the plate (10) perpendicular to the first direction to a plurality of offset positions.

Abstract: A baseboard radiator element is formed of an aluminum tube and fins or vanes of aluminum sheet. An elongated strip of sheet aluminum is bent into a fin assembly of generally rectangular fins alternating with spacer members, with the fins having central apertures. The fin assembly is placed into a fixture and the tube is forced through the aligned apertures to create strong mechanical and thermal contact between tube and fins. The fin structure can be used with center tubes of other materials. A brass or steel connector insert is fitted into the end of the aluminum tube, and the end of the tube is deformed inward using a collet or jaw device to create a hermetic seal with the tube. The process can also be used for joining aluminum tubing to tubing of aluminum or other materials.

Abstract: A heat exchanger (10) is manufactured from a single piece of heat-conducting material and comprises fins (20) for guiding a fluid and for transferring heat between the fluid and the heat exchanger, wherein between the fins are provided transverse fins (24) which extend in a direction substantially transversely of the fins over a distance which is less than the distance between the fins and in a direction substantially transversely of the flow direction of the fluid, wherein the transverse fins are arranged alternately close to or on mutually adjacent fins in order to cause a fluid flowing between the fins to follow a meandering path between the fins, wherein the lateral direction lies substantially perpendicularly of the fins.

Abstract: A method and apparatus for producing a finned tube comprises the step of securing a tube to a tube clamping device. The method also comprises the step of arranging a plurality of cutters within the cutter head, wherein the cutters rotate with the cutter head. The method also comprises a step of moving the cutter heads into position around the tube and rotating the cutters around an outside surface of the tube in order to cut fins, via the removal of material, into the outside surface of the tube. The removal of the material also will allow for a very thin inner wall to be arranged underneath the fins being cut therein. This methodology will allow for a very light weight, thermally efficient finned tube to be used to produce a heat exchanger for use in turbine engines or the like.

Abstract: A temporarily assembling apparatus comprises a support member 2 for supporting thereon heat exchange tube blanks P having their lengthwise direction positioned laterally, with their widthwise direction positioned vertically, and arranged from front rearward in parallel with opposite left and right ends thereof aligned respectively, and the fins F arranged between the respective pairs of adjacent tube blanks. Two header supports 3 are arranged respectively at the left and right sides of the support member 2 and movable leftward or rightward. A pair of left and right tube blank correcting members 19 are each in the form of a plate extending from the front rearward and having a plurality of blank fitting slits 23 formed in a side edge thereof and arranged from the front rearward at the same spacing as the heat exchange tubes to be produced of the heat exchanger.

Abstract: The present invention relates to a heat sink of a large area, in which a heat-dissipating body is further provided in its limited space. The method for manufacturing a fin includes the steps of providing a fin, cutting the fin to form a foldable piece thereon, folding back the foldable piece to be overlapped on the fin and form an accommodating hole, and punching the folded piece and the fin to form two overlapped through-holes. The fin, the heat-dissipating body and heat pipes are assembled together to obtain the heat sink. Since the fins and the heat-dissipating body dissipate the heat of the heat-generating element simultaneously, the heat-dissipating efficiency of the heat sink can be improved.

Abstract: A tube for a heat exchanger includes a tube main body (10) with a long plate shape in an extrusion direction and formed with a plurality of fluid paths (1a) through which a fluid for heat exchange flows internally along the extrusion direction, a plurality of concave parts formed with intervals in a pressing direction in which either an upper surface part (1c) of the tube, that is, a surface of one side in a thickness direction of the tube main body (10) or a lower surface part (1d) of the tube, that is, a surface of a reverse direction to the upper surface part (1c) is pressed in the direction, convex parts (1b) projected in a direction that narrows a cross sectional area of the fluid paths (1a) are formed by the pressed concave parts in the fluid path (1a).

Abstract: A heat exchanger is used which has heat transfer tubes acting as flow paths of a refrigerant and metal fins having pores opened inward from the surfaces thereof for adsorbing and desorbing moisture in air within the range of a relative pressure of 0.1 to 0.9 so as to transfer heat of the heat transfer tubes to air, wherein the pores have a diameter of 1 to 20 nm and a depth of 1 to 100 ?m.

Abstract: A heat exchanger including a header having a plurality of header openings with rigid tubes that may be made of plastic are inserted in the openings. The tubes are sealed to the header to prevent leakage between the header and the tubes to prevent water and air leakage between the wet, scavenger air stream flowing through the tubes and a dry air stream flowing around the tubes. A method of making the heat exchanger includes providing the openings with a flange and uses an interference fit between the rigid heat exchange tubes and the header openings. A self-leveling sealant may be used to seal the heat exchanger tubes to the header using, for example, a paint roller and/or a paint sprayer.

Abstract: A heat sink for integrated circuits is limited substantially to heat transfer fins on one or more heat pipe tubes, the tube(s) functioning as a base for the heat sink. The heat pipe tube has a flattened oval cross-section and can snap-fit in openings through the fins. The tube is exposed on one side of the heat sink for contact with the heat generating circuit. The fins can be flat or irregular and can have a collar engaging the heat pipe tube. In one example, the heat pipe runs perpendicular to vertical fins along the bottom of a standing fin stack. In another embodiment two U-shaped heat pipe tubes carry a layered stack, the bottom of the U-shapes being presented under the lowermost in the stack. A clamp urges the heat sink against the heat source.

Abstract: Disclosed is a tube made of a profile rolled metal product, in particular for use in heat exchangers, a rolled metal product and a method of producing the same. The tube includes a first wall and a second wall forming two opposing sides of the tube, and a plurality of reinforcing structures connecting the first and second walls and forming longitudinal passages between them. Each reinforcing structure is formed by a longitudinal ridge on the first wall projecting towards the second wall and a longitudinal ridge on the second wall protecting towards the first wall. The ridges are joined to each other at their sides.

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 along which water flows, and which is housed inside casing, and coils about the first axis to form a helix having a succession of turns; and deflecting means for directing the fumes between successive turns of a first helix portion in a first direction and between successive turns of a second helix portion in a second direction opposite to first direction; the tube forming the turns of the first helix portion has a first cross section and the tube forming the turns of the second helix portion has a second cross section different from the first cross section.

Abstract: A method of manufacturing a metal-plastic hybrid heat exchanger including the steps of providing a plurality of metallic fins, providing a plastic tank with a melting point above a predetermined temperature and having a header plate that includes a plurality slots, and providing a plurality of plastic tubes with a melting point above the predetermined temperature. The plastic tubes are inserted into the corresponding slots of the plastic tank to form an assembly. The metal fins are inserted between the plastic tubes of the assembly. A thermoplastic adhesive is applied onto the mating surfaces of the metal fins and the plastic tubes, and onto mating surfaces of the slots and the plastic tubes of the assembly. The metal plastic heat exchanger assembly is then heated with infrared radiation to the predetermined temperature to cure the thermoplastic adhesive, thereby bonding the metal fins and the slotted headers to the tubes.

Abstract: A method of manufacturing a cooling unit that includes a cooling plate in which a cooling fluid flows, the cooling plate having a structure in which a pair of tabular members are arranged to be opposed to each other with a cooling pipe, through which the cooling fluid flows, sandwiched between the tabular members, the manufacturing method includes: forming grooves for housing the cooling pipe in respective opposed surfaces of the pair of tabular members; forming projections projecting to inner sides of the grooves by applying an external force or joining a predetermined member to the respective opposed surfaces of the pair of tabular members; and combining each of the pair of tabular members and the cooling pipe by housing the cooling pipe in the grooves and expanding a diameter of the cooling pipe.

Abstract: A method for producing steam generator tube walls, where the tube walls are formed from a tube-fin-tube combination and are comprised of a multiplicity of at least one of the tube wall components made of plane tube wall panels, curved tube wall panels, transition tube wall panels and corner bends and are configured with a take-up member with one penetration opening each at tube wall regions at which tubes are passed through the tube wall and the tube wall panels exhibit at the periphery longitudinal fin-fin panel joints and transverse circumferential weld-panel joints. The method including producing tube wall components made primarily of 9-12% martensitic chromium steels by welding in a workshop, the components having a material that is not to be heat treated at specific locations. Tempering the tube wall components in the workshop with a first heating device. Connecting the tube wall components at their circumferential weld-panel joints at the assembly site with weld seams.

Abstract: There is disclosed a heat exchanger capable of suppressing the increase of a pressure drop while improving a non-uniform rate distribution of a fluid. A heat exchanger T of the present invention is constituted of flat plates 1, 2 each having an inflow port 15 of the fluid on one end thereof and an outflow port 16 of the fluid on the other end, and offset type fins 5 provided in the flat plates 1, 2, and includes a fin orthogonal region H where the plate fins 5 cross the flow direction of the fluid from the inflow port 15 to the outflow port 16 at right angles and a fin parallel region V where the plate fins 5 are disposed in parallel with the flow direction of the fluid from the inflow port 15 to the outflow port 16, the fin orthogonal regions H are provided on the sides of the inflow port 15 and the outflow port 16, and the fin parallel region V is provided between the respective fin orthogonal regions H.

Abstract: A method for producing heat exchanger tubes involves applying a surface coating to the tube through which a fluid medium flows and which has a number of cooling fins arranged on an outer wall. The method comprises applying a surface coating to an inner wall and the outer wall of the tube, the inner wall and the outer wall comprised of structural steel, the surface coating comprising copper, nickel, cobalt, chromium, a nickel alloy, a chromium alloy, a copper alloy, a cobalt alloy or stainless steel. The method further comprises soldering the number of cooling fins to the outer wall. The surface coating is configured to facilitate direct soldering of the number of cooling fins to the outer wall of the tube and to provide the inner wall with corrosion resistance to the fluid medium in the tube.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided that include multichannel tube and fin configurations designed to promote the release of condensate. The multichannel tubes may have a curved, round, or airfoil shape, and may be used with plate or corrugated fins. In certain embodiments, corrugated fins may be brazed to multichannel tubes and then trimmed to form individual fin structures. Double header configurations also may be employed.

Abstract: Methods for manufacturing brazed aluminum heat exchangers involved in boiling and condensing, including a high performance nucleate boiling surface bonded with the walls of fin-less boiling passages. One method includes providing a first heat exchanger core subassembly including a first joinable end, at least one cooling and one boiling passage, and a first partial finless passage arranged at the joinable end. A second heat exchanger core subassembly is provided similar to the first including a second joinable end. The first and second heat exchanger core subassemblies are brazed. The first joinable end is affixed, preferably by welding, to the second joinable end and the first partial finless passage is affixed to a second partial finless passage to form a coupled finless passage, and thereby a heat exchanger core.

Abstract: The present invention provides panels for a microchannel heat exchanger core wherein the panels may have greater than about 36 fins per inch of the panel. The microchannels of the panels may have an aspect ratio of at least about 10. Panels are also provided having microchannels and fins on one side of the panel or on opposite sides of the panel. Methods are also provided for machining the panels of the present invention.

Abstract: According to a preferred embodiment, an improved method and apparatus for manufacturing tube and fin heat exchangers that includes a step for reducing the outer diameter of stock tubing to a value well below nominal prior to bending the tubing into hairpins. The reduced diameter increases the stiffness of the resultant hairpins and allows for efficient lacing of the heat exchanger fins and end plates. The method uses pre-size rollers that are adjustable for reducing the diameter of the tubing. The invention also includes a hairpin and heat exchanger manufactured according to the method.

Abstract: Method for producing a heat exchanger with the following steps: a) hot dip refining a steel sheet to form a corrosion-protection layer (3), wherein the corrosion-protection layer (3) contains zinc and between 0.5% and 60% aluminum; b) removal of the corrosion-protection layer (3) from one side of the steel sheet; c) production of a heat exchanger tube (2) from this steel sheet, wherein the corrosion-protection layer (3) is arranged on the outside; d) provision of ribs (6) of aluminum or an aluminum alloy; e) provision of a flux; f) provision of a filler material (8) containing aluminum and silicon in the connecting region between the ribs (6) and the outside of the heat exchanger tube (2); g) connection of the heat exchanger tube (2) to the ribs (6) in a brazing operation.

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 heat exchanger has header tanks each including a header forming plate, a tube connecting plate, and an intermediate plate interposed between the two plates, the plates being arranged in superposed layers and brazed to one another. Each of the plates is made from a metal plate by press work. The header forming plate has an outward bulging portion. The tube connecting plate has tube insertion holes. The intermediate plate has communication holes causing tube insertion holes to communicate with the interior of each outward bulging portion therethrough. Heat exchange tubes have opposite ends placed into the respective insertion holes and brazed to the respective tube connecting plates. The heat exchanger including such header tanks is reduced in the number of components, can be fabricated with a high work efficiency, and exhibits improved heat exchange performance.

Abstract: The present invention is directed to a method for manufacturing a heat exchanger in which a Zn thermally sprayed layer is formed on a surface of an aluminum flat tube 2 and then the Zn thermally sprayed tube is combined with an aluminum corrugated fin and brazed to the fin. The Zn thermally sprayed tube 2 is subjected to a Zn diffusion treatment by heating the tube before the brazing to diffuse the Zn in the tube surface, and thereafter the brazing is performed. The heat exchanger manufactured in this way can assuredly have a stable sacrifice corrosion layer and is excellent in corrosion resistance. The heat exchanger can be manufactured efficiently without major facility changes at low cost.

Abstract: Fins are formed monolithically from the material of a tube body. The fins extend from the tube body outer surface, and include a fin base and a fin top. Wings extending from a fin side surface between the fin base and fin top can produce upper and lower channels between adjacent fins. Depressions can be formed in the fin top with platforms below the depressions. The tube can also include helical ridges on an inner surface of the tube. The tubes are used for heat transfer, and can be included in shell and tube heat exchangers.

Abstract: A heat exchanger includes a tubular portion configured to carry a first heat exchange medium and a finned portion coupled to the tubular portion. The tubular portion includes a tube and a coating disposed on the tube. The finned portion includes a fin strip disposed in a groove formed in the coating to secure the fin to the tube portion.

Abstract: A method of manufacturing a brazed pipe comprises steps A to D. In the step A, on an upper surface of the right-hand side edge portion of a material plate 20 having a brazing material layer over opposite surfaces thereof, a first slant surface 21 is formed such that it inclines from the upper side toward the lower side while approaching the right end, and a first flat surface 22 is formed between the first slant surface 21 and the lower surface. In the step B, on a lower surface of the left-hand side edge portion of the material plate 20, a second slant surface 24 is formed such that it inclines from the lower side toward the upper side while approaching the left end, and a second flat surface 25 is formed between the second slant surface 24 and the lower surface.

Abstract: A tube assembly (20) for a heat exchanger (22) and a method of manufacturing the tube assembly (20) is disclosed herein. The tube assembly (20) includes a tube (32) defining a fluid passage (46). The tube (32) has first and second sides (34, 36) spaced from and parallel to each other. A corrugated fin (50) having alternating ridges (52) and grooves (54) is disposed in the tube (32) between the first and second sides (34, 36). The corrugated fin (50) subdivides the fluid passage (46) into a plurality of passageways (56). At least one recess (58) is defined in at least one of the ridges (52). The recess (58) extends away from the closest one of the first and second sides (34, 36) toward an interior of the tube (32).

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: According to the invention, a heat exchanger is disclosed. The heat exchanger may include a first tube sheet, a second tube sheet, a heat exchange tube, a header, and a coupling. The heat exchange tube may be disposed at least partially between the first tube sheet and the second tube sheet, and may also be made of a first material. The header may be made of a second material. The coupling may include a first end and a second end. The first end may be made of the first material, and the second end may be made of the second material. The first end may be operably coupled with the heat exchange tube, and the second end may be operably coupled with the header.

Abstract: For the purpose of increasing the area of an adsorbent to be in contact with the air, a heat exchanger (47, 49) includes: a fin set (59) including a plurality of fins (57) arranged parallel to each other with an interval therebetween; a framework (61) arranged to surround end faces of the fin set (59) in the arrangement direction of the fins and end faces of the fin set (59) in the lengthwise direction of the fins; a serpentine heat transfer tube (63) having straight parts (63a) penetrating the fin set (59) in the arrangement direction of the fins and U-shaped parts (63b) protruding out of the framework (61); and a connector tube (65) for connecting the heat transfer tube with a refrigeration pipe. An adsorbent capable of adsorbing moisture from the air and desorbing the moisture into the air is supported on the surfaces of the fin set (59), the framework (61), the heat transfer tube (63) and the connector tube (65), respectively.

Abstract: A method for fabricating a syngas cooler is provided. The method includes coupling a tube cage within the syngas cooler, and coupling a plurality of platens to the tube cage to facilitate steam production in the syngas cooler. At least a first platen has at least one of a length that is larger than a length of a second platen, a non-linear geometry, and an angular position that is oblique with respect to a wall of the syngas cooler.

Abstract: A heat exchanger includes a discharge part formed by an opening part of a partition wall to facilitate discharge of oil, air and foreign substances from the interior of the heat exchanger.