Abstract: A tube plug adapted to be driven into and then plug an open end of a heat exchange tube that extends transversely through and is secured in a tubesheet of a heat exchanger, where the tube plug includes an elongated shaft having a lead part adapted to be introduced into the open end of the heat exchange tube and an opposite rear part, and a fluid seal situated on the lead part, the seal including a set of lead and rear ring flanges fixed to the lead part, extending radially outward therefrom, and axially spaced apart from each other, and a compressible and resilient ring-shaped gasket adapted to encircle the lead part of the shaft when situated axially between the ring flanges.

Abstract: A heat exchanger including an array of tubes and fins is configured to reside in a centrifugal fan enabling the centrifugal fan to operate as a cooling and or heating source.

Abstract: A heat transport fluid passage device for a heat transport circuit has a wall defining a passage through which a heat transport fluid flows. The heat transport fluid contains a solvent made of water or an organic substance and fine particles dispersed in the solvent. A hydrophobic membrane is formed on a surface of the wall.

Abstract: In a method of making a heat exchanger tube, a tube of circular cross section is shaped to a tube of non-circular cross section, such as for example rectangular cross section, and a waved configuration is imparted in longitudinal direction and/or transverse direction of the tube of non-circular cross section.

Abstract: In a heat exchanger comprising a capillary tube register in which a fluid to be cooled and/or heated is routed through capillary tubes and in which air flows around the capillary tubes in countercurrent flow relative to the fluid, the capillary tube register comprises at least one capillary tube mat formed from longitudinal and lateral capillary tubes connected together in a mesh pattern for fluid throughput. At least the longitudinal capillary tubes are each connected by way of the ends thereof to a common trunk for feeding, and to a common trunk for discharging, the fluid.

Abstract: A heat exchanger comprising an outer conduit and an inner conduit, arranged inside of and along the longitudinal axis of the outer conduit, the inner conduit and the outer conduit being arranged to form a fluid flow channel between the inner surface of the outer conduit and the outer surface of the inner conduit, the fluid flow channel having a cross sectional form, in a plane substantially perpendicular to the longitudinal axis of the outer conduit, that is elongate being substantially greater in the circumferential direction of the outer conduit than in the radial direction of the outer conduit.

Abstract: [Task] To improve the cooling efficiency of a heat sink without increasing the size of the heat sink. [Means for solution] A heat sink 1 includes a plurality of coolant passage 2, 3, and a connecting passage 4 connecting the coolant passages 2, 3 nonlinearly. A height of a fluid passage of the connecting passage 4 on an inflow side to which the coolant flows in is made greater than a height of the coolant passage 2 connected with the fluid passage on the inflow side. On the other hand, the height of the fluid passage of the connecting passage 4 is decreased to an end portion of the connecting passage 4 on an outflow side from which a cooling water flows out. In increasing the height of the fluid passage of the connecting passage 4 on the inflow side to which the cooling water flows in, gradually, the height of the connecting passage 4 is increased so as to equalize the height of a widthwise direction of the fluid passage of the coolant passage 2.

Abstract: Cooling systems include a first passageway forming member that includes first and second ends and at least one connecting recess that opens into first and second passageways formed by the first passageway forming member. A second passageway forming member includes first and second ends and inlet and outlet ports proximate the first end such that the first end, including an elastomeric seal and the inlet and outlet ports, is sealably insertable in and removable from the at least one connecting recess, where the inlet port opens into the first passageway and the outlet port opens into the second passageway, and where, when the first end is inserted in the at least one connecting recess, the elastomeric seal is sandwiched between and in substantial contact with both the first end and the first passageway forming member.

Abstract: Disclosed is a method of forming a heat exchanger turbulizer apparatus including a member having a longitudinal axis, a lateral width and a plurality of strips including first strips and second strips, each strip extending widthwise and being corrugated longitudinally so as to form a plurality of laterally spaced-apart sections connected to one another by bridges projecting from the sections in a common direction, the bridges of the first and second strips extending in the same direction and the corrugations of the second strips being offset laterally from the corrugations of the first strips. The method comprises: crimping longitudinally-corrugated strip material between first and second forming dies to form said apparatus, said dies being adapted such that substantially all lateral movement of strip material in crimping results from strip material being drawn laterally by material that has been displaced in a direction parallel to the direction of die movement.

Abstract: A honeycomb reactor or heat exchanger (12) includes a honeycomb (20) having a plurality of cells (22, 24) extending in parallel along a common direction from a first end (14) to a second end (16) thereof, with the cells being divided by walls (23), the honeycomb (20) having one or more first passages (28) formed within a first plurality of cells (24) of the honeycomb (20), the first passages (28) extending laterally from cell to cell within the honeycomb (20) and being accessible via ports or holes (30) in or through a side (18) of the honeycomb (20). The honeycomb (20) also as a plurality of second passages (29) formed within a second plurality of cells (22) within the honeycomb (20), the second passages (29) each extending from first cell openings (31a) at the first end (14) of the honeycomb (20) to second cell openings (31b) at the second end (16) of the honeycomb (20).

Abstract: Simulation of thermal fluid-structure interaction using bulk flow fluid elements (BFFEs) is described. Each BFFE is configured to include the following characteristics: 1) at least one surrounding layer of solid elements representing either the surrounding structure or the pipe wall; 2) a layer of shell elements or Bulk Node Segments representing the outer boundary of the fluid; 3) a Bulk Node at the center of the BFFE for defining fluid properties (e.g., density, specific heat) and volume (i.e., fluid volume is calculated as the enclosed volume between the Bulk Node and all of the Bulk Node Segments that surround it); 4) a fluid flow beam element or Bulk Node Element for defining fluid flow path to another BFFE; and 5) a contact interface between the solid elements and the shell elements for conducting fluid-structure thermal interaction.

Abstract: The invention relates to a flow channel of a heat exchanger with two parallel heat transfer areas (F1, F2) that are arranged at a distance corresponding to a channel height H. Each heat transfer area (F1, F2) is provided with a structure that is formed by a plurality of structural elements which are placed next to each other in rows running perpendicular to the direction of flow P and extend into the flow channel. Each structural element has a width B, a length L, a height h, a flow-off angle a, and an overlap U while being provided with a longitudinal axis.

Abstract: A distribution pipe (100) for a heat exchanger (300) comprising at least two parallel channels for a first medium exchanging heat with a second medium comprises a distribution portion (110) provided with a number of holes (120) provided on positions corresponding to the position of the parallel channels. A fitting portion (140) is in fluid communication with the distribution portion (110) and placed at one end of such distribution portion (110), wherein the fitting portion is provided with a brazing surface (150) adapted to be brazed onto an end plate (200) or a start plate (320).

Abstract: A heat exchanger unit that includes a plurality of first heat exchanger ducts formed by a plurality of plates configured for a first flow of a coolant, a plurality of second heat exchanger ducts formed by the plurality of plates configured for a second flow to be cooled by the first flow, a first inlet for the first flow, a first outlet for the first flow, a first inlet for the second flow, and a second outlet for the second flow. The heat exchanger unit further includes an inlet chamber for the first flow from which a partial flow of the first flow is branched off, conducted through the plurality of first heat exchanger ducts and circulated within the heat exchanger unit to the first outlet.

Abstract: The various embodiments of the present invention relate to compositions, apparatus, and methods comprising sorbent fibers. More particularly, various embodiments of the present invention are directed towards sorbent fiber compositions for temperature swing adsorption processes. Various embodiments of the present invention comprise sorbent fiber compositions, apparatus comprising a plurality of sorbent fibers, and methods of using the same for the capture of at least one component from a medium, for example CO2 from flue gas.

Abstract: A spiral-path chimney-effect heat sink cools an LED light bulb by increasing the length of the path over which heated air rises between two coaxial tubes. A tube top is attached to one end of the tubes. A light emitting diode (LED) is thermally coupled through the tube top to the inner tube. There are window openings below the rim where the outer tube attaches to the tube top. A convection current path guide is disposed between the inner and outer tubes. The convection current path guide is a spiral wire that causes rising air to follow a longer spiral path around the heated inner tube before the air exits the heat sink through the window openings. An Edison screw base is attached to the end of the inner tube opposite the end attached to the tube top. The coaxial tubes can be cylindrical tubes, conical tubes or square tubes.

Abstract: A heat recovery system for use with a washing appliance having a tub includes a heat exchanger having a first tube and a second tube extending through the first tube such that the first tube and the second tube are substantially concentric. A first end connector is configured to couple to a first end portion of the first tube and a first end portion of the second tube. The first end connector is formed as one-piece and includes a first connection portion configured to couple in flow communication with the first tube, and a second connection portion configured to couple in flow communication with the second tube.

Abstract: A double pipe type heat exchanger includes an inner pipe having a first flow path defined therein and an outer pipe arranged around the inner pipe to define a second flow path between the inner pipe and the outer pipe. The inner pipe includes a spiral groove formed on an outer circumferential surface of the inner pipe to extend along a longitudinal direction of the inner pipe. The outer pipe includes a reduced diameter portion protruding inwardly so that the inner surface of the outer pipe is intermittently contacted with the outer circumferential surface of the inner pipe.

Abstract: Methods and apparatus for controlling tube temperatures may prevent freezing of fluids in cross counterflow shell and tube heat exchangers. Cold gas may flow inside the tubes of the heat changer and warm liquid may flow outside the tubes. The tube diameter and tube spacing may be varied through the tube passes through the heat exchanger in order to provide a hot side conductance to cold side conductance ratio which results in the tube temperature being safely above the liquid freezing point. The heat exchanger may be used in, for example, the aerospace industry as a fuel oil cooler or as a preconditioner for reactants in a spacecraft propulsion system.

Abstract: A metal tube in the present invention is a metal tube for pyrolysis reaction with superior characteristics of both the heat exchange and the pyrolysis reaction, which is suitable for use in a process in which hydrocarbons are pyrolytically decomposed. The tube is a metal tube for pyrolysis reaction consisting of 3 or 4 spiral ribs 1 provided on an inner surface which are inclined at 20 to 35 degrees to an axial direction of the metal tube, and characterized in that h/Di of 0.1 to 0.2 and h/w of 0.25 to 1.0 when a height of the rib 1 is defined as “h”, a width of the rib 1 at its bottom part is defined as “w” and an inner diameter of the tube at the bottom part is defined as “Di” in cross section of the spiral rib 1.

Abstract: The present disclosure is directed to multichannel tubes that can be expanded to assemble the multichannel tubes within plate fin heat exchangers. The multichannel tubes each include several generally parallel flow paths, which are separated from one another by deformable webs slanted in a common direction across a width of the multichannel tubes. The webs may deform upon expansion of the tubes with a high pressure fluid. During expansion, the webs may stretch, shift positions, and/or change shape to allow the outer dimensions of the tube to increase. The multichannel tubes may be designed to expand to fill openings of plate fins, creating an interference fit between the multichannel tubes and the plate fins.

Abstract: A method for manufacturing tubes, in particular for heat exchangers, composed of endless ribbons on a roller mill, wherein the tubes are composed of at least two ribbons which are subjected to a shaping process on the roller mill, wherein perforations or predetermined break points are introduced into the ribbons at predetermined locations, wherein a step of making the perforations in the ribbons is carried out, after which the ribbons are combined to form the tube and after which individual tubes are separated off at the predetermined locations. The formation of the perforations or the predetermined break points in at least one of the two ribbons is performed within or at the end of the shaping process of the corresponding ribbon so that some of the pairs of rollers do not require a drive.

Abstract: A heat exchanger tube for a gas furnace is provided. The heat exchanger tube may include an inlet, an outlet and one or more asymmetric dimple pairs disposed between the inlet and the outlet. The inlet and the outlet may form a passageway through the heat exchanger tube for receiving a heated combustion gas. Each asymmetric dimple pair may provide a first dimple and an opposing second dimple. The first and second dimples may be configured to at least partially constrict flow of the gas therethrough. Together, the first and second dimples may form an upstream section, a downstream section and a merge point.

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: The present disclosure is directed to multichannel tubes with flow path inlet sections that allow refrigerant to enter the flow paths through an outer wall of the multichannel tubes. In certain embodiments, a portion of the outer wall is removed to expose the flow paths to a distribution chamber within an inlet manifold divided into an inlet section and a distribution section by a distributor. According to certain embodiments, the inlet section may be designed to have a relatively small cross-sectional area that promotes mixed phase flow of liquid and vapor refrigerant. The multichannel tubes extend into the distribution section to partition the distribution section into a series of distribution chambers defined by a pair of adjacent tubes, the distributor, and the inlet manifold. Within each distribution chamber, the refrigerant may be directed into the multichannel tubes through the flow path inlet sections of the multichannel tubes.

Abstract: An evaporator assembly having a first header, a second header, at least two banks of evaporator tubes extending therebetween and in hydraulic communication with the first and second headers. At least one of the evaporator tube may be folded from a unitary strip clad aluminum folded having a thickness (t). The evaporator tube includes a height (h) which is measured from the bottom exterior surface to the top exterior surface, and a corner radius (rc) defined by the transition radius from the flange segments to the channel walls. The bottom wall includes a width (2w), the corrugated portion includes alternating flange segments abutting the interior surface and channel walls connecting the alternating flange segments, at least one of the alternating adjacent flange segments includes a length (a) cooperating with adjacent the channel walls to define a channel having a width (b). The evaporator tube also includes a number of ports per millimeter width (PPMW) in a range of 0.40 to 1.

Abstract: A system of spacecraft radiators comprising pre-formed thermal-transfer modules joined together by at least one solid-state welding process. Critical failure points are eliminated by forming the thermal-transfer modules as a single unitary piece, preferably by an extrusion process. The thermal-transfer modules allow the formation of larger radiator assemblies, which may comprise a wide range of sizes and physical geometries.

Abstract: A heat exchanger 21 is provided with a metal tube 47 that has a support member 55 inhibiting deformation in the thickness direction in a fluid flow channel 53, and a multiple-hole metal tube 45 that is stacked on one side of the metal tube 47 in the thickness direction and has an opposing surface disposed opposite an outer surface 61 on the one side of the metal tube 47 and joined by at least part thereof to the outer surface 61 on the one side.

Abstract: A method and apparatus particularly suited to the manufacture and assembly of cage-like, substantially cylindrical structures made of long, slender tubular components which, by themselves, are not self-supporting, employs an exo-skeleton structure to assemble cage-like, tubular structures in pie-shaped, longitudinal segments while in a horizontal or vertical position utilizing longitudinal or circumferential attachments. The apparatus comprises at least two segments which permit construction of subassemblies of the cage-like, tubular structure and their transportation, if necessary, to a remote site where they may be finally assembled.

Abstract: A water heat exchanger exchanges heat between a refrigerant and water, and includes a pair of flat refrigerant pipes and a flat water pipe. Each flat refrigerant pipe has a plurality of refrigerant passageway holes. The flat water pipe has at least one water passageway hole. The number of water passageway holes is fewer than the number of refrigerant passageway holes of the flat refrigerant pipes. Long side surfaces of the flat water pipe and a long side surface of each of the pair of flat refrigerant pipes are in tight contact with each other as viewed in cross section. The flat water pipe is interposed by the pair of flat refrigerant pipes.

Abstract: A fiber application machine for the production of composite material parts, comprising a system for displacing a fiber application head, a fiber storage, and a fiber conveyor for conveying the fibers from the fiber storage to the application head, the fiber conveyor being placed in the internal passage of at least one flexible tubular sheath, the machine further comprising a cooling system adapted to inject cold gas in the internal passage of the sheath.

Abstract: A system for generating power from a low grade heat source includes a heat source inlet, heat sink inlet, heat exchanger unit, and a heat engine. The heat source inlet conveys a flow of a heated fluid into the system. The heat sink inlet conveys a flow of a cooled fluid into the system. The heat exchanger unit is configured to rotate. A portion of the heat exchanger unit alternates between thermal contact with the heated fluid and thermal contact with the cooled fluid in response to being rotated. The heat engine is configured to generate power in response to the heat exchanger unit being rotated.

Abstract: A gas turbine plant associated with a solar thermal electric generation system has a heat receiver which receives heat from the sun, a gas turbine having a compressor and a turbine which operates with an operating fluid compressed by the compressor and heated by the heat receiver, a temperature sensor which detects heat from the sun, an auxiliary driving device which is driven based on the temperature of the heat detected by the temperature sensor, and which starts the gas turbine, and a generator which converts kinetic energy generated as a result of the rotation of the turbine into electric energy.

Abstract: In one aspect, the present techniques include a heat exchange apparatus including: a) a body comprising an interior cavity, the body including: a first surface and a second surface defining at least a portion of the body and the first surface positioned exterior with respect to the second surface and the interior cavity, and the second surface positioned exterior with respect to the interior cavity and interior with respect to the first surface; b) a first conduit for conveying a fluid to the body; c) a second conduit in fluid communication with the first conduit wherein the second conduit is positioned at least partially within the interior cavity of the body; and d) a joint between the first conduit and the second conduit, wherein the joint moves between a first location and a second location based on the temperature within the interior cavity, wherein at least one of said first location and said second location is positioned intermediate the first surface and the second surface.

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 helical coil is supported inside a heat exchanger tube by at least one inside protrusion on the inside wall of the tube, the at least one protrusion supports the helical coil on a contact point of the helical coil against downwards movement in the tube and supports the helical coil on the end point of the helical coil against rotational movement in a first rotational direction relative to the tube.

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: A multi-stage, multi-tube, shell-and-tube reactor which contains reaction zones and interstage temperature control (cooling/heating) zones in series. The reactor has at least two types of zones which both contribute to removing or supplying heat to the system depending on the system's need. The reactor will have a group of reaction zones which contain tubes packed with catalyst to progress the reaction and remove or supply heat simultaneously. There are also a number of interstage temperature control (cooling/heating) zones which are designed to supply or remove heat to or from the system. The positioning, number, and design of the zones will depend on the amount of temperature control desired and exothermic or endothermic nature of the processes to be conducted in the reactor.

Abstract: A method and system for recovering heat in a gasifier are provided. The gasifier includes a pressure vessel including a substantially cylindrical shell, an upper head, and a lower head. The gasifier also includes a refractory wall substantially concentric with the shell and spaced apart radially inwardly from the shell, and a superheater heat exchanger mounted between the shell and the refractory wall.

Abstract: An exemplary cooling system includes a heat transfer device having a base and a plurality of curved fins defining a curved air flow channel. Air flow is provided through the air flow channel, and a plurality of openings through a fin communicate air flow from a first side to a second side of the curved fin.

Abstract: Impingement plates for shell and tube heat exchangers are positioned between the inlet openings and the tubes with the surfaces of the impingement plates being normal to the flow path of the liquid entering the shell from the inlet openings and having a plurality of openings through which a portion of the liquid passes before contacting the tubes. The openings can be formed as elongated parallel slots that are positioned parallel to the tubes and function to enhance the fluid flow, especially in the area that is immediately downstream from the impingement plates, thereby reducing fluid stagnation, fouling and tube erosion and prolonging the useful life and time in service between maintenance shut downs.

Abstract: A ventilation system including a heat recovery assembly having a first heat exchanger for heat recovery with a first flow path and a second flow path to exchange heat energy from air transported in one of paths to the other. A peripheral inlet to the first flow path is arranged to surround a central outlet of the second flow path and a peripheral inlet to the second flow path is arranged to surround a central outlet of the first flow path. The assembly further includes a peripheral outlet and a central inlet, the peripheral outlet arranged to surround the central inlet, and the heat recovery assembly is arranged such that air entering the peripheral inlet of the first flow path exits by the peripheral outlet; and air entering the central inlet will exit by the central outlet of the second flow path.

Abstract: A micro channel device includes at least one micro channel and at least one heating/cooling channel. The at least one heating/cooling channel is in thermal communication with the at least one micro channel. A temperature of a heating/cooling fluid in the least one heating/cooling channel determines a temperature of a fluid in the at least one micro channel.

Abstract: A vented, gas-fired air heater especially designed for temporary heating applications includes an improved burner design providing effective air and gas mixing and efficient burning in the combustion chamber. Highly efficient heat exchanger including corrugated heat exchanger panels provides enhanced heat transfer characteristics.

Abstract: The present invention relates to a device incorporating a single use heat exchanger that is sterilized prior to use in the pharmaceutical, biopharmaceutical, biotechnology or related industries and is used for the heat transfer between one, two or more fluids and is connected to an application, container or process by way of tubing, connectors and/or various fluid flow components.

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

Abstract: A core material for an aluminum alloy clad material contains Si in a content of 0.3% to 1.5% (hereinafter “%” means “percent by mass”), Mn in a content of 0.3% to 2.0%, Cu in a content of 0.3% to 1.5%, Ti in a content of 0.01% to 0.5%, and B in a content of 0.001% to 0.1%, with the remainder including Al and inevitable impurities. The core material and an aluminum alloy clad material using the same ensure sufficient corrosion resistance and give a product having an extended life.

Abstract: A heat exchange chamber includes an inlet, an outlet and a plurality of walls defining a chamber interior. The inlet receives a heat exchange medium flowing in a first flow direction in an initial line of flow. Disposed within the chamber interior is a medium directing member, having an inclined surface, which diverts the medium from the initial flow direction so that it disperses within the chamber interior. The medium exits the chamber, via the outlet, in the initial line of flow. The chambers are interconnected by tubes to form assemblies. Plural sets of chamber and tube assemblies are arranged between manifolds to provide a heat exchanger.

Abstract: A casting apparatus has a long cooling jig inclined with respect to a vertical direction. A melt is supplied to and flowed on a bottom surface of the cooling jig, whereby a solid phase is generated in the melt to obtain a semi-solid slurry, and the semi-solid slurry is transferred into and solidified in a cavity of a mold to obtain a casting. The casting apparatus further has a release agent application unit, and a release agent is applied by the application unit to the bottom surface of the cooling jig in a direction toward a supply of the melt at an angle of less than 90° to the bottom surface before supplying the melt to the cooling jig.

Abstract: A compact furnace heat exchanger for a gas furnace is disclosed. The compact furnace heat exchanger may include a first pass having an inlet end, a second pass in fluid communication with the first pass through a first return bend, and a third pass having an outlet end and in fluid communication with the second pass through a second return bend. The third pass may further include a plurality of irregularities for optimizing performance of the compact furnace heat exchanger and the associated gas furnace.