Abstract: A distributor of flowable medium for a heat exchanger has a housing member and at least one substantially vertically oriented tube member arranged therein. The distributor has a hollow body arranged to be supported in one end of the tube member. An upturned funnel shaped core member is formed in the hollow body, resulting in an annular flow passage between the body and the core member. The body has an upper section with an inlet, a lower section with an outlet, and a mid section between the upper and lower sections. The flow passage extends from the inlet to the outlet at the lower section, and is configured to narrow progressively from the inlet towards the mid section, and widen progressively from the mid section towards the outlet for modifying flow characteristics of the medium flowing through the passage. Intake guide elements are provided at the upper section.

Abstract: Apparatus for condensing hydrocarbons, such as but not limited to butane and propane, from a stream of natural gas includes as its primary components a pre-cooler assembly, a chiller assembly, a refrigerant compressor/condenser assembly, and separator assembly. In the pre-cooler assembly warm gas entering the apparatus is cooled by counter-current flow heat exchange with cooled natural gas exiting the apparatus. The chiller assembly of the apparatus the hydrocarbon stream is cooled in co-current flow heat exchange with a first refrigerant tube, carrying a first refrigerant which is itself cooled in co-current heat exchange with a second refrigerant tube disposed in coaxial relationship with the first refrigerant tube. Both first and second refrigerant tubes are disposed in coaxial relationship with an outer jacket conveying the gas stream through the chiller assembly. Condensed hydrocarbons are separated from the gas stream in the separator assembly.

Abstract: Apparatus and method are provided for facilitating liquid cooling of a plurality of blades of an electronic system chassis. The apparatus includes a chassis-level manifold assembly with a first coolant path and a plurality of second coolant paths. The first coolant path is isolated from the plurality of second coolant paths by a heat exchanger. The heat exchanger facilitates transfer of heat from coolant within the second coolant paths to coolant within the first coolant path. Each second coolant path is isolated from the other second coolant paths, and coolant passing therethrough facilitates cooling of a respective blade. When operational, each second coolant path forms a portion of a respective closed loop coolant path extending between the manifold assembly and the electronic system chassis, and in one embodiment, each blade is an immersion-blade, with multiple components thereof immersion-cooled by coolant flowing through the respective second coolant path.

Abstract: The invention relates to a heat exchanger in modular construction, in particular for facilities operated using large load and/or temperature changes, having an external shell and a number of heat exchanger modules, wherein each heat exchanger module, which is either a preheater, evaporator, or superheater module, has an entry manifold, and exit manifold, and meandering pipes, through which the heat-absorbing medium, in particular water, flows from the entry manifold to the exit manifold, and the heat exchanger modules are also situated in a shared external shell, so that they have the same heat-dissipating medium flowing around them, the evaporator modules being connected in parallel via a steam-collecting drum situated outside the external shell.

Abstract: The countercurrent direct-heating-type heat exchanger that is able to suppress drift in the case when a fluid to be heated is supplied, to prevent local abrasion of the members and also to carry out efficient heat exchange. The countercurrent direct-heating-type heat exchanger equipped with a feed pipe, a feed nozzle, ring-like straightening plates and umbrella-type dispersing plates of the above fluid to be heated, characterized in that the above feed nozzle has the shape of a pipe having a circular cross section and the dimension satisfying the following formula (1) and formula (2): Ln/Dn?1 ??Formula (1) (wherein, Ln indicates the length of the feed nozzle; and Dn indicates the inside diameter of the feed nozzle) 1.5?Sp/Sn?2.0 ??Formula (2) (wherein, Sp indicates the inner cross-sectional area of the feed pipe; and Sn indicates the inner cross-sectional area of the feed nozzle).

Abstract: A baffle for a heat exchanger tube extending between opposed header pipes. The baffle is a longitudinal member with a concave underside shape conforming to the convex circumferential shape of the heat exchanger tube, and has a length substantially equal to the distance between the header pipes. A lip having a convex top side shape conforming to the concave underside shape of the longitudinal member extends along one longitudinal edge of the member. Two such members can be nested together by overlaying the non-lipped longitudinal edge of a one member atop the lipped longitudinal edge of the other member. A plurality of longitudinally aligned heat vent slits extend substantially the entire length of an uppermost portion of the member.

Abstract: The invention relates to a mass transfer or heat-exchange column, a tube bundle heat exchanger, with a first mass transfer or heat-exchange area, a first tube bundle (2), and a second mass transfer or heat-exchange area, in particular a second tube bundle (8), that is arranged spatially above the first mass transfer or heat-exchange area, which are surrounded by a cover (10?). In a tube bundle heat exchanger according to the invention, a lower end section (40) of the second, smaller tube bundle (8) projects into a cover part (13?) of the first, larger tube bundle (2), by which an intermediate space (41) is formed between the lower section (40) of the second tube bundle (8) and the cover part (13?). In the area of this intermediate space (41), an inlet (26) for injecting a medium into the column and optionally a manhole (36) are arranged on the cover part (13?).

Abstract: A shell and tube heat exchanger, such as a vertical combined feed/effluent heat exchanger (VCFE), including: a shell having a fluid inlet and a fluid outlet; a plurality of baffles mounted in the shell to guide the fluid into a helical flow pattern through the shell; wherein a helix angle ? of a baffle proximate the inlet is different than a helix angle ? of a baffle proximate the outlet.

Abstract: Desalination apparatus based on porous restraint panels fabricated from a number of different layers of metal, thermoplastic, or other substances are used as sophisticated heat exchangers to control the growth of gas hydrate. The gas hydrate is produced after infusion of liquid hydrate-forming material into water to be treated, which liquid hydrate-forming material can also be used to carry out all the refrigeration necessary to cool seawater to near the point of hydrate formation and to cool the porous restraint panels. Hydrate forms on and dissociates through the porous restraints. The composite restraint panels can also be used in gaseous atmospheres where, for instance, it is desired to remove dissolved water.

Abstract: A heat exchanger for transfer of heat from a first fluid to a second fluid, including: a housing defining an interior space, a plurality of tubes spaced apart from each other, fixed in the housing, and extending in a first direction within the interior space, a first inlet for receiving the first fluid into and through the tubes, and first outlet for discharging the first fluid out of the tubes, a second inlet for receiving the second fluid into the interior space in an inlet flow direction generally transverse of the first direction, and a second outlet for discharging the second fluid out of the interior space, and an impingement plate assembly situated in the interior space of the housing between the second inlet means and the plurality of tubes, with a fouling area defined as the area in the interior space that includes portions of the tubes directly beneath said impingement plate assembly, the impingement plate assembly including: (a) a top plate facing the second inlet, where the top plate lies in a pla

Abstract: A heat exchanger is presented that provides for mixing of a process fluid to prevent localized spikes in temperatures. The heat exchanger includes a mixing chamber within the exchanger, where a first process fluid passes from process tubes after being partially heated. The heat exchanger further includes an intermediate shell for passing a second process fluid into the fired heater and for exchanging heat with the first process fluid. The fluid flows from the mixing chamber to other process tubes for further heating.

Abstract: An exhaust gas heat exchanger has a tank, laminated exhaust gas tubes where the exhaust gas flows, a cooling water inlet pipe and a cooling water outlet pipe. The cooling water flows into the tank and flows through water passages between adjacent exhaust gas tubes and between an inner wall of the tank and an outermost exhaust gas tube. Ribs are formed on the exhaust gas tubes so as to lead the cooling water after colliding with an inner wall toward an upstream side of the exhaust gas tubes to prevent the cooling water from being stuck. Otherwise, spaces between an inner wall of a casing and the exhaust gas tubes are regulated to keep the flow rate of the cooling water in the casing so that the cooling water is prevented from being boiled locally by slow flow rate of the cooling water.

Abstract: A pre-heater for an apparatus for the production of carbon black, is adapted to pre-heat air by heat exchange to a temperature of at least 800° C., comprises an elongated jacket arranged substantially and having a top end and a bottom end, said jacket defining a space, a plurality of tubings arranged inside said space, said tubings having a diameter of 85 to 90 mm, said jacket being provided with an air inlet and an air outlet, for allowing said air to enter and exit said space, a smoke inlet chamber and a smoke collection chamber for allowing smoke to enter and exit said tubing. Said jacket is supported by a suspension means between said top and bottom ends excluding at the top end as such, such that the jacket is allowed to expand upwards above and downwards below said suspension means.

Abstract: A heat transfer system for refrigeration and/or heating of products includes a housing having an internal chamber, a baffle, a spiral pathway around the baffle, a gas flow pathway and a blower to circulate gas along the gas flow pathway. The baffle separates the chamber into upper and lower portions. The spiral pathway includes an upper spiral pathway within the upper portion, and a lower spiral pathway within the lower portion. The gas flow pathway includes an upper gas flow pathway across the upper spiral pathway and a lower gas flow pathway across the lower spiral pathway in which gas flow in the upper and lower gas flow pathways defines a circulation loop. The width of the upper gas flow pathway and upper spiral pathway are similar, and the width of the lower gas flow pathway and lower spiral pathway are similar.

Abstract: A portable air cooling device comprising an insulating box including a lid, the box having exterior walls and a floor, the exterior walls including at least one inlet port and at least one outlet port, the box having a multiplicity of dividers, the dividers defining a serpentine air column between the at least one inlet port and the at least one outlet port; and a blower in gaseous communication with one of the inlet or the outlet ports to move air between the ports.

Abstract: Desalination apparatus based on porous restraint panels fabricated from a number of different layers of metal, thermoplastic, or other substances are used as sophisticated heat exchangers to control the growth of gas hydrate. The gas hydrate is produced after infusion of liquid hydrate-forming material into water to be treated, which liquid hydrate-forming material can also be used to carry out all the refrigeration necessary to cool seawater to near the point of hydrate formation and to cool the porous restraint panels. Hydrate forms on and dissociates through the porous restraints. The composite restraint panels can also be used in gaseous atmospheres where, for instance, it is desired to remove dissolved water.

Abstract: A fluid flow moderator for a plate heat exchange device comprises an open-sided fluid conduit adapted for positioning adjacent to a fluid port of a plate heat exchange device wherein said fluid conduit has a fluid deflection surface for moderating fluid flow. A method of moderating fluid flow in a plate heat exchange device comprises positioning an open-sided fluid conduit adjacent to a fluid port of a plate heat exchange device wherein said fluid conduit has a surface for deflecting a fluid and moderating fluid flow in said heat exchange device.

Abstract: A method of assembling a syngas cooler is provided. The method includes coupling a supply line within a cooler shell, coupling a heat transfer panel within the cooler shell, and coupling a heat transfer enclosure within the cooler shell such that the heat transfer enclosure substantially isolates the heat transfer panel from the cooler shell. A manifold is coupled in flow communication with the supply line, the heat transfer enclosure, and the heat transfer panel.

Abstract: The invention provides a submerged evaporator (14) with integrated plate heat ex-changer (4) that may operate with markedly increased capacity, where the evaporator (14) does not require more space than other known types and have a smaller filling volume of refrigerant (10) than prior art units. The integrated plate heat exchanger (4) is built up with an outer contour that substantially follow the lower contour of the casing (6) and the liquid level, where the integrated heat exchanger (4) has at least one inlet connection (24.1) and at least one outlet connection (24.2) for secondary refrigerant (26), and where the upper volume of the casing acts as a liquid separator. With such design, much less space is occupied than with prior art types of submerged evaporators. The reason is that the internal volume is better utilised.

Abstract: A heat exchanger includes a housing with an exhaust inlet, an exhaust outlet, a fluid inlet, and a fluid outlet. A plurality of heat exchange conduits has a first surface in fluid communication with the exhaust inlet and the exhaust outlet and has a second surface in fluid communication with the fluid inlet and the fluid outlet, wherein the first surface is coated with a material including Teflon®.

Abstract: The present invention is directed to ovens for heat treating products and may include food preparation ovens for preparing pizza and similar types of food products. The ovens incorporates one or more cold air return baffles to elongate the flow of hot air across the surface to be heated as well as provide a stagnant heated air zone adjacent to the finger duct.

Abstract: In the arrangement in a heat exchanger in accordance with the invention, the heat exchanger comprises a shell and tubes. The tubes are placed inside the shell. The first medium entering the heat exchanger can be conducted into the tubes and the second medium between the inner shell surface and outer tube surface, and the first medium from the heat exchanger can be conducted out from the tubes and the second medium out from between the inner shell surface and outer tube surface. The heat exchanger comprises at least two tube rows placed in succession in the direction of the second medium's flow. The first tube row comprises at least two tubes, the first distance being between the two parallel tubes, the second distance being between the first parallel tube in the first row and a tube in the second row, and the third distance is between the second parallel tube in the first row and the tube in the second row.

Abstract: The whole set includes a compressor assembly (10), inlet (23) and outlet (24) to and from a harnessing loop, inlet (33) and outlet (34) to and from a heating loop, and two heat exchangers (20, 30), coupled to the compressor assembly and to the inlets and outlets. Linking pipes (21, 22, 31, 32) between heat exchangers and the compressor assembly, and/or inlets and outlets from and to harnessing and heating loops, are not linking pipes assembled by brazing but are welded stainless steel pipes, notably by orbital TIG welding. The whole set is enclosed in a tighten enclosure (40) comprising a supporting base (41) and a bonnet (42) sealed together.

Abstract: The present invention provides a single shell-pass shell-and-tube heat exchanger with helical baffles, where within a single pitch, the helical baffles are separated into inner and outer parts along the radial direction of the shell. In the central portion of the inner space of the shell, an inner non-continuous helical form is employed; in other portion outside the central portion, doughnut shaped helical baffles with continuous curved surfaces are arranged to form an outer continuous helical baffle, and the outer helical baffles are arranged to surround the inner helical baffles. Furthermore, the present invention relates to a multiple shell-pass shell-and-tube heat exchanger with helical baffles, in which complete continuous helical baffles are provided in shell-sides other than the inner shell-pass, while non-continuous helical baffles or other flow guide means are employed in the inner shell-pass.

Abstract: The invention relates to an exhaust gas heat exchanger, in particular, to an exhaust gas cooler for exhaust gas recirculation in a motor vehicle comprising heat exchanging conduits which are passed through by exhaust gases, surrounded by a coolant and linked to a distributing and/or collecting chambers comprising a flux guiding device which is provided with the exhaust gas input and output sides and a plurality of channels extending therebetween and inclined to each other

Abstract: A stacked plate heat exchanger includes a core having an outer periphery and a longitudinal axis, a shell having an inner periphery and at least partially surrounding the core to define a fluid gap therebetween. A seal between the shell and the core at least partially divides the fluid gap into an inlet chamber and an outlet chamber, and includes at least one core fin projecting generally radially outwardly and having at least one core fixed end proximate the outer periphery of the core and at least one core free end distal the outer periphery of the core, and also includes at least one shell fin projecting generally radially inwardly and having at least one shell fixed end proximate the inner periphery of the shell and at least one shell free end distal the inner periphery of the shell, and being interleaved with the at least one core fin.

Abstract: A shell-and-tube evaporator of a refrigerant system includes a refrigerant inlet distributor that traps a pocket of gaseous refrigerant to displace liquid refrigerant underneath the evaporator's tube bundle, thereby reducing the total charge of refrigerant in the evaporator. In some embodiments, the distributor comprises four sections interconnected by a central refrigerant feed line, which properly apportions the refrigerant to the four sections.

Abstract: An integrated heat exchanger and muffler unit (50,120,140) is provided for transferring heat between a first fluid and a second fluid, and for muffling the noise of the first fluid. The unit includes a housing (52) including a first inlet (60) for the first fluid, a first outlet (62) for the first fluid, a second inlet (64) for the second fluid, and a second outlet (66) for the second fluid. The unit (50,120,140) further includes a resonator (76) in the housing (52) and connected between the first inlet and outlet (60,62) to muffle noise in the first fluid, and a heat exchanger core (11,122) in the housing (52) connected to the first and second inlets and outlets to transfer heat between the first and second fluids. In one embodiment, the heat exchanger core surrounds the resonator. In another embodiment, the resonator surrounds the heat exchanger core.

Abstract: A pump-free water-cooling system is provided wherein external power supply is not involved; heat can be transported in any direction; and high reliability and low thermal resistance are ensured.

Abstract: An evaporator including a lower drum, an upper drum, and at least one tube extending between the lower drum and the upper drum. The plurality of tubes have fluid passageways therein extending from the lower drum to the upper drum. A duct is provided having a heating gas passageway provided therein. The at least one tube extends through the heating gas passageway. The fluid passageways define an overall flow path from the lower drum to the upper drum extending in a direction substantially counter-current to an overall flow path defined by the heating gas passageway extending from a gas inlet of the heating gas passageway to a gas outlet thereof.

Abstract: A fuel cooler with lamellar inner structures for connecting to an air-conditioning system of a vehicle includes an outer housing having outer connections connected to an outer supply pipe and an outer discharge pipe for a first fluid with the outer connections being integrated into walls of the outer housing in a diagonally mismatched arrangement. An inner conduit cell, surrounded by the outer housing, has an inner supply pipe and an inner discharge pipe for a second fluid passing through the inner conduit cell, which includes lamellas oriented parallel to a direction of flow of the second fluid, with the first fluid coming into contact with an outer contact surface of the inner conduit cell prior to exiting the outer housing for creating a heat exchange between, and without a mixing of, the two fluids, which are fuel and a coolant.

Abstract: The invention concerns a heat exchanger with a large number of U-shaped tubes (3), preferably brought together to form at least one tubular bundle and arranged in a housing 2, and several partitions (4) subdividing the housing (2) into separate sections (5). For the formation of a heat exchanger which has a comparatively high efficiency even with increasing operation time, a heat exchanger is proposed in the invention that is characterized by at least one venting tube (6) that preferably extends through all sections (5) of the housing (2) and that has a number of venting holes (15) formed transversely to the longitudinal extension (14) of the tube.

Abstract: The present invention relates to a heat exchanger for transferring heat from one fluid to another fluid, comprising a plurality of metallic tube continuously formed into four discrete helically wound coils, each coil having at least four turns, the coils being spatially placed such that axis of all the four helical coils of each bank are substantially in one common plane, the axis of each helical coil is at an angle of 90° to the adjacent helical coil, wherein number of banks is from 2 to 10 and ratio of diameter of the helical coil to the diameter of the tube is at least 10:1.

Abstract: An improved heat exchanger which resists fouling of the heat exchange surface by minimizing the temperature difference between the heat exchanger surface and the fluid stream in contact with the heat exchange surface. In one embodiment, a heat exchanger comprises an outer shell, the outer shell comprising a first inlet operable to pass a first fluid stream, an inner shell at least partially disposed within the outer shell, the inner shell comprising a second inlet and an outlet operable to pass the first fluid stream, and a heat exchange surface comprising a plurality of tubes operable to pass a second fluid stream.

Abstract: A shell-and-tube type heat exchanger of the smallest possible length necessary for heat exchange is disclosed which is capable of obtaining uniform distribution of flow of a shell side fluid and substantially eliminating the structural restriction imposed on the shell side. This shell-and-tube type heat exchanger is provided with one annular conduit furnished with not less than two partitions concurrently serving as an expansion joint for introducing and discharging a shell side fluid and allowing the flow path for said shell side fluid to be separated into an introducing part and a discharging part and which comprises a place having no array of heat-transfer tubes in the flow path for said shell side fluid. It prevents the equipment from necessitating an unnecessary enlargement due to the structural restriction on the shell side and enables the shell side fluid to produce a uniform flow.

Abstract: A heat exchanger includes a shell that has an inner chamber defined by an inside wall surface. A tube stack disposed within the inner chamber and includes a plurality of flat elongated tubes that define a first fluid flow path. The tubes each include a wire that is wound around a tube outside surface and that extends in a helical manner along a tube length. When stacked together, the wires of adjacent tubes connect with one another to form an “X” pattern connection that operates to both distance the adjacent tubes and form a second fluid flow path along the outside surfaces of the tubes. The connection between the wires causes turbulent flow in the coolant that improves the heat transfer characteristic of the coolant, and the connection between the wires provides structural support to the tubes in the tube stack to help reduce vibration induced heat exchanger failures.

Abstract: A heat exchanger includes a housing with an exhaust inlet, an exhaust outlet, a fluid inlet, and a fluid outlet. A plurality of heat exchange conduits has a first surface in fluid communication with the exhaust inlet and the exhaust outlet and has a second surface in fluid communication with the fluid inlet and the fluid outlet, wherein the first surface is coated with a material including Teflon®.

Abstract: An exhaust gas heat exchanger and bypass has an intake manifold, an outlet manifold, a duct for a heat exchanger, and a bypass duct. The heat exchanger duct and the bypass duct run in parallel between the intake manifold and the outlet manifold and are sealingly connected to the outlet manifold. The heat exchanger is arranged in the interior of the heat exchange duct such that the intake side of the heat exchanger is sealingly connected to the heat exchanger duct and the outlet side of the heat exchanger is slideably received in the heat exchanger duct to allow thermal expansion of the heat exchanger relative to the heat exchanger duct.

Abstract: Addressed is a heat exchanger including a housing having an internal wall defining at least one internal chamber incorporating at least one core having a wall defining in the chamber, with the internal wall of the housing across from it, at least one exchange cavity including at least one tubular hollow coil having ends passing through the housing to make it possible for it to be supplied with a primary fluid, at least one inlet and at least one outlet that are axially opposite for circulation of a secondary liquid in the exchange cavity in contact with each coil and at least one tangential spreader rib, extending in projection with respect to a wall across from the coil and not parallel to the axial circulation direction, but adapted in order not to inhibit the circulation of the secondary liquid. The thermal exchanger includes at least one tangential helical rib and at least one coil having different winding directions.

Abstract: Disclosed is a shell-and-tube reactor or heat exchanger, which alternately comprises a doughnut-type baffle plate and a first disc-type baffle plate in order to increase heat transfer efficiency. In the reactor or heat exchanger, a second disc-type baffle plate is placed in an empty space inside of the doughnut-type baffle plate, and some tubes, through the inside of which a first object for heat transfer with a heat transfer medium, are present in a region inside of the doughnut-type baffle plate and outside of the second disc-type baffle plate. Also disclosed is a method for producing an oxide, comprising: using said reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in the tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.

Abstract: Some engine applications place spatial constraints on heat exchangers, such as oil coolers. In such a case, a heat exchanger having an oblong rather than a circular cross section can satisfy spatial constraints, and with certain internal geometry, may permit improved heat rejection performance while potentially enabling a cost reduction through a reduction in materials. The heat exchanger has a housing which defines a heat exchanging cavity within which a tube bundle is positioned. The tube bundle is made up of a plurality of tubes in a hexagonal packing pattern that are supported by a plurality of baffles. The tube bundle and the housing define a serpentine flow path between an inlet and an outlet. The serpentine flow path includes a plurality of segments that are generally perpendicular to the tubes, and these segments are separated by flow direction changing windows.

Abstract: A tank for use in a system that outputs a liquid at a user defined constant temperature in order to regulate the temperature of a piece of equipment includes a body of material having a top wall and a plurality of other walls which collectively define a chamber for receiving and storing the liquid. The top wall of the body of material has a manual fill port for pouring new fluid into the chamber and one of the other walls includes an outlet port for discharging fluid stored in the chamber. An auxiliary port is located on the manual fill port and a return fluid port is located on the auto refill port. The body of material further includes a well which extends down into the chamber from an opening in top wall of the tank and which can be removed. The well is sized to accommodate a deionizer cartridge. When the well is removed, either a heater or an immersion pump can be disposed within the chamber.

Abstract: A heat exchanger useful for high temperature applications such as EGR cooling and fuel reformer applications comprises a tube bundle made up of a plurality of tubes, each having at least one end expanded to an enlarged polygonal cross-section, and having central portions with a generally smaller cross section. When the tubes are formed into a bundle, the enlarged end portions nest with one another and interstitial spaces are provided between the central portions of the tube. The enlarged end portions are preferably retained by a header ring having a multifaceted inner peripheral sidewall which is adapted to form brazed lap joints with the outward facing surfaces of the peripheral tubes end portions in the tube bundle. In one preferred arrangement, axially aligned enlarged portions are provided intermediate the ends of at least some of the tubes. These enlarged intermediate portions nest with one another and eliminate or reduce the need for baffle plates.

Abstract: A shell and tube heat exchanger has at least one baffle to support the tubes within the casing of the heat exchanger, wherein the baffle intersects the inner casing wall along a substantial portion of the arc. The baffle has a bypass through which flows at least a portion of the fluid flowing into the casing and around the baffle. At least a portion of the bypass is outside of the casing. This flow of fluid through the bypass reduces pressure drop through the heat exchanger and also reduces to some extent, points adjacent to the baffles where fluid flow may stagnate.

Abstract: In a shell-and-tube heat exchanger with the tubes disposed within the shell for conducting the flow of a fluid to be in heat transfer interaction with a refrigerant contained in the volume formed by the heat exchanger shell and the external surfaces of the tube bundle, the tubes are elongated in their cross-section, with the elongation axis being oriented in the vertical direction to thereby enhance the heat transfer process and potentially reduce the heat exchanger size or tube count. The design features can be applied to both flooded and falling film heat exchangers and are equally applicable to both evaporators and condensers.

Abstract: A two-pass, loop flow heat exchanger includes an inlet plenum that receives a fluid to be cooled, a housing, a plurality of inlet flow passages substantially centrally positioned within the housing and having a first end fluidly coupled to the inlet plenum to receive the fluid, a turnaround plenum fluidly coupled to a second end of the inlet flow passages for reversing the flow of the fluid, a plurality of outlet flow passages peripherally positioned within the housing and having a first end fluidly coupled to the turnaround plenum, and an outlet plenum fluidly coupled to a second end of the outlet flow passages to present the fluid.

Abstract: A vapor-lift pump heat transport apparatus having a small heat resistance and a large heat transport capacity. A heat exchange circulating solution container has a first space and a second space communicating with the first space through a communication opening and contains a heat exchange circulating solution, and vapor thereof, in each space. A circulating solution transport passage includes a pipe connected to the solution outlet of the container and provided with a sensible heat releasing heat exchanger, a pipe disposed in the container, and a pipe connected to a vapor-liquid two-phase fluid inlet and provided with a heating heat exchanger. A vapor-liquid two-phase fluid flows into only the first space through the vapor-liquid two-phase fluid inlet. When the entrance of the vapor-liquid two-phase fluid has caused a pressure difference between the first and second spaces, a difference occurs between the positions of the vapor-liquid interfaces in the first and second spaces.

Abstract: A heat exchanger including a passageway having an internal passage adapted to form a first flow path, and an array of conduits having internal passages that collectively form a second flow path. The conduits extend through the internal passage of the passageway, and a first conduit of the array is provided with a lower total heat exchange surface area per unit volume therein than a second conduit of the array. A method of performing chemical processes is provided that includes providing a catalyst bed within the second flow path, and minimizing a temperature differential between a maximum temperature of a fluid in the second flow path and a minimum temperature of the fluid in the second flow path.

Abstract: A shell-and-tube type heat exchanger of the smallest possible length necessary for heat exchange is disclosed which is capable of obtaining uniform distribution of flow of a shell side fluid and substantially eliminating the structural restriction imposed on the shell side. This shell-and-tube type heat exchanger is provided with one annular conduit furnished with not less than two partitions concurrently serving as an expansion joint for introducing and discharging a shell side fluid and allowing the flow path for said shell side fluid to be separated into an introducing part and a discharging part and which comprises a place having no array of heat-transfer tubes in the flow path for said shell side fluid. It prevents the equipment from necessitating an unnecessary enlargement due to the structural restriction on the shell side and enables the shell side fluid to produce a uniform flow.

Abstract: An improved tray ration heating system includes a reservoir. A heat exchanger transfers heat to the reservoir. A firebox at one end of the reservoir has an opening to receive a burner flame tube. The firebox delivers heated gasses from the burner flame tube along the underside of the reservoir to an opposite end of the reservoir. A main channel along the reservoir includes baffles which produce a tortuous path and introduce turbulence to the hot gasses. First and second channels adjacent to the main channel redirect hot air exiting the main channel, and third and fourth channels direct hot gasses exiting the first and second channels towards the opposite end of the reservoir. An exhaust channel extends along a vertical wall of the reservoir to an exhaust opening. The exhaust channel has baffles for displacing hot gasses across the vertical wall. An insulated outer liner supports the reservoir and heat exchanger.