Abstract: An apparatus and method for minimizing cold spots on plates of a plate-type fluid-to-fluid heat exchanger averages the plate temperature at a hot-fluid exit plane of the heat exchanger. The heat exchanger matrix is constructed to internally vary the flow patterns of opposing hot and cold fluid streams so that the heat transfer coefficient values of one or both fluid streams, designated as h, are optimized so the hot fluid value is a greater value than that of a cold fluid value. Plate variable flow structures are arranged in a manner that allows higher velocity hot fluid flow and possible lower velocity cold fluid flow in areas where the plate temperatures are coolest and the opposite configuration where plate temperatures are hottest.

Abstract: A plate heat exchanger (10) of the double plate type having a plurality of stacked plate elements, each comprising a first plate (1) and a second plate (9). At least the first plate (1) is provided with a surface pattern with a plurality of dimples (5) defining a first distance to a plate plane (8), and a plurality of canal parts (6) defining a second, smaller, distance to the plate plane (8). The first plate (1) and the second plate (9) are joined in such a manner that the protruding areas (5, 6) in combination form flow paths (11) being fluidly connected to rim portions (3) of the plates (1, 9). The heat exchanger (10) provides efficient leakage detection via the flow paths (11) while ensuring a good thermal contact between heat exchanging fluids through the plates (1, 9) via flat portions (7) between the protruding parts (5, 6).

Abstract: A heat exchanger having a cooler block including a stack of plates arranged in plate pairs. The cooler block defines flow paths and flow ducts and has an outer circumference. At least some of the plate pairs include a bent edge having an elongation, the elongation on one plate pair in the stack extending to the next plate pair in the stack such that a substantially smooth contour of the cooler block is formed in at least one circumferential region.

Abstract: A heat exchanger module adapted for being mounted directly to the outer surface of the housing of an automobile system component, such as a transmission or engine housing, is provided. The heat exchanger module comprises a heat exchanger fixedly attached to an adapter module. The adapter module contains one of more fluid transfer channels, interface connectors, seals and mounting holes for screws and/or bolts. In one exemplary embodiment, the adapter module is comprised of an adapter plate that is sealed with one or more shim plates, the shim plates also providing a brazing surface for brazing the adapter module directly to the heat exchanger, the heat exchanger therefore being attached to the adapter module without the use of a base plate.

Abstract: A plate heat exchanger includes a plate package having first and second heat exchanger plates. The plates are joined to each other and arranged side by side so that a first plate interspace exists between each pair of adjacent first and second heat exchanger plates, and a second plate interspace is formed between each pair of adjacent second and first heat exchanger plates. The first and the second plate interspaces are separated from each other and provided side by side in an alternating order. Substantially each heat exchanger plate has at least a first porthole forming a first inlet channel to the first plate interspaces. At least two injectors are arranged in a wall portion of the first inlet channel and extend from the exterior of the plate package to the first inlet channel interior, and each injector supplies a fluid to more than one of the first plate interspaces.

Abstract: A micro-channel structure for a heat exchanger is formed between multiple layers of heat exchange plates arranged in a stacked manner, with a plurality of fin units formed on the heat exchange plate. The fin units are arranged uniformly into a plurality of fin unit groups in the direction perpendicular to a flow direction of fluid, and the fin unit groups are arranged in a staggered manner and spaced from one another by a distance in the flow direction of the fluid. A rear end of the fin unit at the upstream side is arranged in an intermediate position between two adjacent fin units at the downstream side; the fin unit includes at least two fins, with the adjacent fins spaced from each other by a distance; and the fluid channels between the adjacent fin units and between the adjacent fins form the micro-channel structure.

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 heat transfer cell includes first and second heat transfer plates which have first and second heat transfer areas, and first and second flanges bent from the first and second heat transfer areas so as to have a height difference with respect to the first and second heat transfer areas. The first and second heat transfer plates are joined into a cell body so as to be opposite to each other in a mirror image, and the cell body having a first fluid passage therein, weld lines formed along the first contacting each other and along the second flanges contacting each other, and external recesses formed outside the heat transfer areas for second fluid passages intersecting with the first fluid passage at a right angle.

Abstract: The invention relates to a stacked plate heat exchanger, comprising a plurality of elongate plates which are stacked on one another and connected to one another and which have a corrugated profile, which plates have a cavity for leading through a medium to be cooled in the longitudinal direction of the plates and define a further cavity for leading through a coolant, wherein leadthrough openings for supplying or discharging the medium to be cooled or the coolant are formed approximately in the end regions of each elongate plate and each elongate plate is surrounded by a bent-off edge, wherein an nth corrugation of the corrugated profile of each plate is drawn close to the edge, preferably into the edge, whereas the other corrugations of the corrugated profile of the plate terminate before the edge, where n=2, 3, 4 etc.

Abstract: A plate heat exchanger comprises first and second frame plates, side walls, and a stack of heat transfer plates. The heat transfer plates each has a center portion and a peripheral portion encircling the center portion, and they are arranged in pairs between the first and second frame plates. A first flow path for a first fluid exists between the heat transfer plates of the pairs and a second flow path for a second fluid exists between the pairs of heat transfer plates. The side walls extend between the first and second frame plates and enclose the stack of heat transfer plates. A first side wall of the side walls includes a through hole for draining a substance, originating from one of the first/second fluids, from inside to outside of the heat exchanger A first portion of the inside surface of the first side wall slopes towards the hole.

Abstract: A flat heat exchanger plate typically used in a bulk material heat exchanger having an improved construction which increases heat transfer and service period by reducing bulk material accumulation. The flat heat exchanger plate is designed to operate under a negative internal pressure to eliminate depressions or dimples that are typically formed into the sides of these types of heat exchanger coils during the manufacture process. The dimples are created to reinforce the heat exchanger plate from positive internal pressures that other wise would cause the heat exchanger plate to bow due to internal positive pressures. With the removal of the depressions or dimples the tendency for bulk material to accumulate to the exterior surface of the plate is reduced, thereby increasing the service period of the plate and heat transfer. The flat heat exchanger plate tapers from wide to narrow along the direction of flow of bulk material across the plate to further reduce accumulation of bulk material.

Abstract: A selectable heat exchange apparatus and method of use are provided. The heat exchange apparatus comprises a plurality of half-tubes fabricated from any selected material and in any selected method of manufacture.

Abstract: The invention relates to a heating device (10) for a vehicle, comprising:—a flow path (14, 16, 20, 22, 24) for a fluid heat transport means and—an electrical heating arrangement (25) for heating the heat transport means on a heating section of the flow path. According to the invention, the heating section has at least two channels (20) running in a serpentine pattern, through which the heat transport means can flow in parallel. The invention further relates to a method for operating a heating device (10).

Abstract: Disclosed is a heat exchanger comprising a boiling passage and cooling passage defined by opposite sides of metal walls. Layers of brazing material between the metal walls and a spacer member bond components of the heat exchanger together. It has been found that good quality brazed joints can be made by modifying the brazing thermal cycle to first employing a temperature of about 500° C. for an extended period of time and then elevating the temperature to about 590° to 600° C.

Abstract: Provided is a heat exchanger capable of enhancing long-term reliability of the device through prevention of leakage of a fluid while being excellent in heat exchange efficiency, simple in structure, and manufacturable at low cost. The heat exchanger includes a plurality of heat transfer plates, a plurality of inner fins, and a plurality of leakage preventing plates. Each of the leakage preventing plates has formed therein passage holes through which the fluid is caused to flow. An inner fin of a first channel and an inner fin of a second channel are provided so that the thermal resistivities of two fluids are kept equal to each other.

Abstract: A plate fin heat exchanger of the present invention includes a heat exchange part including a heat exchange part main body including layers of plural flow passages, and heat transfer members each of which is disposed within each flow passage of the heat exchange part main body to transfer the heat of fluid flowing in each of the flow passages to each partition walls opposed across the flow passage; and sensing parts connected to both the outsides of the heat exchange part respectively. Each of the sensing parts includes plural sealed spaces, and a sensor wall disposed to separate the outermost sealed space from the sealed space on the inner side thereof. The plate fin heat exchanger further includes a detection means for detecting damage of the sensor wall of the sensing part. According to such a structure, external leak of the fluid performing the heat exchange can be prevented while suppressing deterioration of performance or increase in size or weight.

Abstract: An integrated circuit chip cooling device includes a network of micropipes. A first pipe portion and a second pipe portion of the network are connected by at least one valve. The valve is formed of a bilayer strip. In response to change in temperature, the shape of the bilayer strip changes to move the valve from a substantially closed position to an open position. In one configuration, the change is irreversible. In another configuration, the change is reversible in response to an opposite change in temperature.

Abstract: A plate heat exchanger includes first and second frame plates, and a stack of heat transfer plates. Each heat transfer plate has a peripheral portion encircling a center portion. The heat transfer plates are arranged in pairs between the first and second frame plates, and formed between the pairs of heat transfer plates is a first flow path for a first fluid and a second flow path for a second fluid. One of the first and second flow paths is a free-flow path along which center portions of the heat transfer plates are completely separated from each other. A reinforcement plate is thicker than the heat transfer plates and has a center portion encircled by a peripheral portion. The reinforcement plate is arranged between the first frame plate and the stack of heat transfer plates. Permanent reinforcement joints each bond together the reinforcement plate and an outermost heat transfer plate.

Abstract: A heat exchanger arrangement, for example for an internal combustion engine, having a brazed radiator block (1) which has flow paths (10) formed from pairs of plates and has flow ducts (3) between the plate pairs (P), wherein in each case at least one plate (11) of each plate pair has a plate elongation (12), and wherein the brazed radiator block is arranged in a housing (2) and, at its circumference, is sealed off with respect to the housing. To improve the sealing action between the radiator block (1) and the housing (2), it is provided according to the invention that the plate elongations (12) are formed such that a prescribed dimension of the brazed radiator block (1) can be set by means of deformation of the plate elongations (12).

Abstract: A plate fin includes a slit structure formed by cutting and raising a portion of the plate fin to form an opening facing a flow direction of a fluid and a waffle structure formed by bending a portion of the plate fin to form a protrusion having an angle-shaped cross section which protrudes in a stack direction and having a ridge substantially perpendicular to the air flow direction, and the waffle structure is disposed on the upstream side on the plate fins with respect to the slit structure and a slant length L1 on the upstream side of the waffle structure is smaller than a slant length L2 on the downstream side of the waffle structure.

Abstract: Disclosed is a method for producing a permanently joined plate heat exchanger comprising a plurality of metal heat exchanger plates having a solidus temperature above 1100° C., provided beside each other and forming a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package, wherein each heat exchanger plate comprises a heat transfer area and an edge area comprising bent edges which extend around the heat transfer area, wherein a first surface of the plates forms a convex shape and a second surface of the plates forms a concave shape, wherein the heat transfer area comprises a corrugation of elevations and depressions, wherein said corrugation of the plates and the bent edges are provided by pressing the plates. Also disclosed is a plate heat exchanger produced by the method.

Abstract: A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a uniformly spaced state and a plurality of spacers disposed between the liners to define air passages, and corner guides respectively coupled to corners of the heat-exchanging element. Each of the corner guides includes a guide channel forming a space to receive the corner of the heat-exchanging element so that the corner guides securely come into close contact with the heat-exchanging element, and to minimize a loosening of the corner guide due to an adhesive applied between the heat-exchanging element and the corner guide.

Abstract: The invention relates to a plate heat exchanger with at least two heat exchanger blocks. Each heat exchanger block has several sheets, arranged parallel to one another, that form a plurality of heat-exchange passages for fluids. The heat exchanger blocks are joined to one another via joining means and have at least one common header. A metal foam, that joins the outside surfaces of adjacent heat exchanger blocks to one another, is introduced into an interspace of adjacent heat exchanger blocks. In this way, a blanket heat-conductive and non-positive joining is provided between the opposing outside surfaces of adjacent heat exchanger blocks.

Abstract: The invention relates to a plate heat exchanger composed of a plurality of plates (1), preferably made from sintered ceramic material, in which fluid-flow guide channels (2) are formed as a system of channels in such a way that a substantially meandering profile of the fluid flow is obtained over the surface area of the respective plate, the side walls (3) of the guide channels (2) having a plurality of apertures (4), which lead to turbulence of the fluid flow. The invention also relates to a method for the production of such a plate heat exchanger, in particular by a diffusion welding process in which the plates are joined to form a seamless monolithic block. The plate heat exchanger according to the invention is suitable in particular for applications at high temperatures and/or with corrosive media, and also as reactors.

Abstract: A heat exchanger may include a gas conduit flowable through by a predetermined gas and a heat conduit flowable through by a predetermined fluid compound working fluid. The heat conduit may be in thermal communication with the gas conduit. The heat exchanger may include a first section having a first section length, a second section having a second section length, and a third section having a third section length. The gas conduit may span, in a direction of flow of the gas, the first section, the second section, and the third section. The heat conduit may span, in a direction of flow of the working fluid, the third section, the first section, and the second section. The first section may include a gas inlet and the third section may include a working fluid inlet and a gas outlet. The section may include a working fluid outlet.

Abstract: The present invention relates to a heat exchange element in which unit constituent members, each of which includes a partition member that has a heat-transfer property and a moisture permeability and a spacing member that holds the partition member with a predetermined spacing, are stacked and in which a primary air flow that passes along an upper surface side of the partition member and a secondary air flow that passes along an undersurface side of the partition member and crosses the primary air flow exchange heat and moisture through the partition member, wherein a detachment suppressing rib is provided on the opposite side of the spacing member when viewed from the partition member at a bonded portion between the partition member and the spacing member, and the partition member is sandwiched by the spacing member and the detachment suppressing rib.

Abstract: A method of extending the lifetime of brazed primary hot inlet wavy fin structures of aircraft heat exchangers includes inserting slots in the fins. The slots increase the mechanical compliance of the fins as well as act as crack arrestors should a thermally induced fracture occur. In an embodiment, the slots are inserted by EDM.

Abstract: A heat exchanger assembly in one embodiment includes an inlet, an outlet, and a core. The inlet is configured to accept a fluid to be cooled and the outlet is configured to provide an exit for a flow of the fluid that has been cooled. The core includes at least one passageway formed therein configured for passage of the fluid to be cooled from the inlet to the outlet. The core also includes a receiving surface configured to receive a cooling flow therethrough. The core is configured to direct the cooling flow to pass by at least a portion of the at least one passageway to cool the fluid. The core is comprised of a high temperature geopolymer composite material. The composite material may be configured for use at temperatures above about 300 degrees Celsius, and may have a thermal conductivity below about 20 Watts/(meter*degree Kelvin).

Abstract: The disclosure relates to a heat exchanger, for example an indirect air cooler, in which the air, for example compressed charge air for an internal combustion engine, is cooled, for example by a fluid, wherein the heat exchanger is constructed from stacked pairs of plates. The exemplary fluid can be conducted into an inlet region and/or outlet region of the plate pairs in at least one flow path approximately in the direction of the common edge, and further through at least a first duct approximately in cross current with respect to the exemplary air, and passes further through the plate pairs over the largest heat exchange area of the plate pairs approximately in countercurrent with respect to the air, in order to flow through at least one second duct, approximately in cross current with respect to the exemplary air, and back to the outlet.

Abstract: A laminated total heat exchange element that includes a plurality of laminated plates, a first spacing member forming a first flow path between the laminated plates, and a second spacing member forming a second flow path between the laminated plates, wherein the first flow path is formed to allow fluid to pass from one side to another side of the laminated total heat exchange element, the second flow path is formed to allow fluid to pass from the another side to the one side of the laminated total heat exchange element, a third flow path, which communicates with the first flow path on the one side and extends substantially parallel to a lamination direction of the laminated plates, is formed, and a fourth flow path, which communicates with the second flow path on the another side and extends substantially parallel to the lamination direction of the laminated plate, is formed.

Abstract: A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a uniformly spaced state and a plurality of spacers disposed between the liners to define air passages, and corner guides respectively coupled to corners of the heat-exchanging element. Each of the corner guides includes a guide channel forming a space to receive the corner of the heat-exchanging element so that the corner guides securely come into close contact with the heat-exchanging element, and to minimize a loosening of the corner guide due to an adhesive applied between the heat-exchanging element and the corner guide.

Abstract: A plate heat exchanger reduces the cross-sectional diameter of channels and suppresses clogging of the channels with a brazing material. First heat transfer plates each include a plurality of rows of inverse V-shaped waves formed on its surface, and second heat transfer plates each include a plurality of rows of V-shaped waves formed on its surface are alternately stacked. The intersections of the waves are joined by brazing. Further, a distance (L) between joint points in the short-axis direction of the heat transfer plates and a fillet dimension (f) in the short-axis direction of the heat transfer plates satisfy a relation 0?((L?f)/L)×100?40.

Abstract: A plate fin heat exchanger includes a plate fin core having a plurality of plates defining a set of hot air passages extending from a hot air inlet region of the plate fin core to a hot air outlet region of the plate fin core and a set of cool air passages extending from a cool air inlet region of the plate fin core to a cool air outlet region of the plate fin core. The plate fin heat exchanger further includes a mounting flange circumscribing the cool air outlet region. At least a portion of the mounting flange has a plurality of heat transfer structures that extend into a flow path of cooling air exiting the cool air outlet region of the plate fin core.

Abstract: The present invention discloses a heat exchange plate, heat exchanger, and communication base station cabinet. The heat exchange plate includes a heat exchange plate body that has an air duct, an air inlet is disposed on a first side surface of the heat exchange plate body and an air outlet is disposed on an adjacent second side surface of the heat exchange plate body. The air duct is formed between the air inlet and the air outlet, and a diversion structure for guiding air to flow is disposed in the air duct.

Abstract: A heat exchanger plate has multiple structures thereon. A heat transfer portion has a plurality of ribs arranged in a rib pattern. A fluid ingress structure is arranged near a first corner of the heat exchanger plate. The structure includes a first open fluid aperture defined in the heat exchanger plate, and a first platform arranged between the first open fluid aperture and the first corner. The first platform is connected to a rib of the rib pattern. A fluid bypass structure is arranged near a second corner. The fluid bypass structure includes a closed fluid aperture defined in the heat exchanger plate, a second platform completely surrounding the closed fluid aperture, and a first corner rib arranged between the second platform and the second corner. The first corner rib is connected to a rib of the rib pattern.

Abstract: Disclosed is a method for producing a permanently joined plate heat exchanger comprising a plurality of metal heat exchanger plates having a solidus temperature above 1100° C., provided beside each other and forming a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package. Each heat exchanger plate comprises a heat transfer area and an edge area which extend around the heat transfer area. The heat transfer area comprises a corrugation of elevations and depressions, wherein said corrugation of the plates are provided by pressing the plates. Also disclosed is a plate heat exchanger produced by the method.

Abstract: A layer heat exchanger for high temperatures is provided that includes a layer block having layer plates and cover plates and a housing that accommodates the layer block. The housing has a high heat resistance, combined with a high stiffness, and the layer block has a core that is soft and tough relative to the housing.

Abstract: A plate for the use in a heat exchanger cassette, where the plate comprises a corrugated pattern having a plurality of ridges (9) and valleys (10), and where the plate comprises a sealing gasket groove (3) encircling a heat transfer surface (8) that will be part of a contact-free fluid channel when two cassettes comprising at least one plate each are positioned adjacent each other, wherein the sealing gasket groove (3) comprises a base surface with a first, flat section (12) and a second, bent section (13), and where the bent section is angled with the angle ?. The advantage of the inventive plate is that an airtight heat exchanger cassette can be obtained in an easy and cost-effective way.

Abstract: A vapor condenser is provided which includes a three-dimensional folded structure which defines, at least in part, a set of coolant-carrying channels and a set of vapor condensing channels, with the coolant-carrying channels being interleaved with and extending parallel to the vapor condensing channels. The folded structure includes a thermally conductive sheet with multiple folds in the sheet. One side of the sheet is a vapor condensing surface, and the opposite side of the sheet is a coolant-cooled surface, with at least a portion of the coolant-cooled surface defining the coolant-carrying channels, and being in contact with coolant within the coolant-carrying channels. The vapor condenser further includes, in one embodiment, a top plate, and first and second end manifolds which are coupled to opposite ends of the folded structure and in fluid communication with the coolant-carrying channels to facilitate flow of coolant through the coolant-carrying channels.

Abstract: A fitting assembly containing a fitting, a first plate and a second plate are provided. The first plate has a first plate wall and a first-plate aperture, the first-plate wall being positioned along an edge of the first plate defining the first-plate aperture. The second plate has a second-plate wall and a second-plate aperture, the second-plate wall being positioned along an edge of the second plate defining the second-plate aperture. The fitting assembly having the fitting being sandwiched between the first plate wall and the second plate wall. Also disclosed is a heat exchanger having the fitting assembly as described herein, and a method of forming the fitting assembly.

Abstract: A flow-plate is dividable in mid plane. The flow-plate includes two parts, each part includes a channel side and a utility side, and the two parts of the flow plate are counter parts and complementing each other. When the flow-plate is connected the two parts form a channel between the two counter parting channel sides. The channel includes curved obstacles, sidewalls and channel floors. The curved obstacles are lined up in parallel rows separated by sidewalls, the backside of the rows of curved obstacles have deep machined grooves making the obstacles hollow for heat transfer fluids on utility sides. A flow-plate section and a flow module are also disclosed.

Abstract: A water vapor transport membrane comprises a nanofibrous layer disposed on a macroporous support layer, the nanofibrous layer coated with a water permeable polymer. A method for making a water vapor transport membrane comprises forming a nanofibrous layer on a macroporous support layer and applying a water permeable polymer to the nanofibrous layer. The water permeable polymer can be applied for so that the nanofibrous layer is substantially or partially filled with the water permeable polymer, or so that the coating forms a substantially continuous layer on one surface of the nanofibrous layer. In some embodiments of the method, the nanofibrous layer is formed by electro-spinning at least one polymer on at least one side of the porous support layer. In some embodiments, the support layer is formable and the method further comprises forming a three-dimensional structure from the water vapor transport membrane, for example, by compression molding, pleating or corrugating.

Abstract: A plate heat exchanger comprises plural heat exchanger plates and at least one adapter plate, which each extend parallel with a main extension plane. The heat exchanger plates form a plate package with first and second plate interspaces for first and second mediums. Each heat exchanger plate has four port holes extending through the plate package. The heat exchanger plates comprise outermost heat exchanger plates. Two of the plate interspaces form a respective outermost plate interspace at a respective side of the plate package, which are delimited outwardly by a respective one of the outermost heat exchanger plates, and the adapter plate is outside one of the outermost heat exchanger plates. A distance plate between the adapter plate and one of the outermost heat exchanger plates has at least two port holes concentric with each of the respective port holes of the outermost heat exchanger plates and the adapter plate.

Abstract: A heat exchanger includes a pair of opposed, spaced apart heat exchanger plates defining a heat exchanger volume therebetween having an inlet and opposed outlet. A plurality of heat exchanger ribs are included within the heat exchanger volume. Each rib defines a rib body spanning the heat exchanger volume. Each rib body includes a plurality of slits therethrough to define a flow path through the heat exchanger ribs from the inlet to the outlet of the heat exchanger volume. The ribs and slits can be formed using ultrasonic additive manufacturing (UAM), for example.

Abstract: An exhaust heat exchanger includes a water tank accommodating tubes and having an outside space defined outside of the tubes, a gas tank having an exhaust passage and an outside space defined outside of the exhaust passage, a dividing portion to separate the outside space of the water tank from the exhaust passage of the gas tank, and a communication portion. The outside space of the gas tank and the outside space of the water tank communicate with each other through the communication portion.

Abstract: The invention relates to a heat exchanger for carrying out a thermal exchange between a first fluid and a second fluid. The heat exchanger includes a plurality of chambers stacked in a longitudinal direction to form a thermal exchange bundle. At least one first chamber suitable for containing the first fluid is defined by a pair of first plates, and at least one second chamber suitable for containing the second fluid is defined by a pair of second plates. The second plates including openings in communication with the second chamber The first plates each include at least two primary openings and at least two secondary openings The two primary openings being in communication with the first chamber, and the two secondary openings being in communication with the openings of the second plates.

Abstract: A plate-type heat exchanger, in particular for motor vehicles, is provided that includes a plurality of plate groups in order to form first and second and/or third flow paths, a spatial region for fourth flow paths being formed between adjacent plate groups, the plate groups having at least one plate pair having a first and second plate in order to form the first flow paths and the second flow paths, wherein a third plate can be arranged in interaction with one of the first or one of the second plates in order to form the third flow path.

Abstract: An exhaust gas heat exchanger that includes a stack at least partially surrounded by a housing. The stack includes a first tube, a second tube, and a coolant duct between the first tube and the second tube. A fin is located within the coolant duct. The fin includes a first portion and a second portion and the first tube includes a first portion and a second portion. The first portion of the fin is fixed to the first portion of the first tube such that the first portion of the fin is coupled to the first portion of the first tube for movement with respect to the housing, and the second portion of the fin is supported in the housing for movement relative to the second portion of the first tube to permit movement of the second portion of the first tube with respect to the second portion of the fin.

Abstract: To provide a plate heat exchanger free from degradation of gaskets which form a flow path through which a high-temperature fluid flows. In the plate heat exchanger, a plurality of heat transfer plates 20 each provided with passage holes 21, 22, 23, and 24 in corners are stacked; a flow-path forming gasket 31 is interposed between peripheries of each adjacent ones of the heat transfer plates 20; communicating-path forming gaskets 32 are installed, surrounding the passage holes 21 in each adjacent ones of the heat transfer plates 20 alternately; and thereby a first flow path 1 adapted to pass a high-temperature fluid H, a second flow path adapted to pass a low-temperature fluid C, and communicating paths 3 adapted to cause the high-temperature fluid H and the low-temperature fluid C, respectively, to flow in and out of the first flow path 1 and the second flow path 2 are formed alternately on opposite sides of each of the heat transfer plates 20.

Abstract: A water vapor transport membrane comprises a nanofibrous layer disposed on a macroporous support layer, the nanofibrous layer coated with a water permeable polymer. A method for making a water vapor transport membrane comprises forming a nanofibrous layer on a macroporous support layer and applying a water permeable polymer to the nanofibrous layer. The water permeable polymer can be applied for so that the nanofibrous layer is substantially or partially filled with the water permeable polymer, or so that the coating forms a substantially continuous layer on one surface of the nanofibrous layer. In some embodiments of the method, the nanofibrous layer is formed by electro-spinning at least one polymer on at least one side of the porous support layer. In some embodiments, the support layer is formable and the method further comprises forming a three-dimensional structure from the water vapor transport membrane, for example, by compression molding, pleating or corrugating.