Abstract: A polymeric radiator having front and back radiator halves, that cooperate to define a primary coolant passage and a series of secondary coolant passages. The primary coolant passage includes integral internal baffles extending inwardly from the radiator halves. The internal baffles define passageways to allow coolant to flow through the radiator. Preferably, the passageways do not intersect the mating edges of the front and back radiator halves to enhance the structural integrity of the radiator.

Abstract: An evaporator capable of improving heat-exchange efficiency by enhancing performance to distribute refrigerant to many refrigerant passages of a refrigerant distribution pipe from a throttle. The evaporator is capable of suppressing the occurrence of a refrigerant passing noise by the throttle while maintaining the throttle of a nozzle at a certain size as to be able to function as a throttle. The inner diameter of the throttle in the nozzle is made as large as possible. The cross-sectional center of the throttle of the nozzle is off-centered toward the upper side relative to the cross-sectional center of the refrigerant distribution pipe inserted into the inlet tank of the evaporator. The refrigerant flows out of the throttle in a mixed condition of liquid and gas, and separation of gas and liquid in the refrigerant is alleviated inside the refrigerant distribution chamber.

Abstract: A method for uniformly distributing the vapor conducted from a parallel flow condenser section of an air cooled condenser into the dephlegmator cubes of a subsequently arranged countercurrent condenser includes throttling gaseous fluids present at the ends of the dephlegmator tubes on the collector side when the gaseous fluids are withdrawn from the dephlegmator tubes. In the air cooled condenser for carrying out the method, at least the predominant majority of the dephlegmator tubes has resistance elements at or near where they connect to the gas collector.

Abstract: A heat exchanger is provided with a first tank and a second tank. Heat transfer tubes are disposed between the tanks and are connected to the tanks to place the tanks in fluid communication. At least one of the tanks is divided into chambers by a partition. A reinforcement plate member is disposed in at least one of the first and the second tanks for reinforcing the tank to prevent deformation of the tank due to an increase of the pressure within the tanks. The reinforcement plate member is not connected to the partition.

Abstract: A heat exchanger is provided with a first tank and a second tank. Heat transfer tubes are disposed between the tanks and are connected to the tanks to place the tanks in fluid communication. Either of the tanks may be divided into chambers by a partition. The partition has at least one portion which is oriented to be angularly offset from the direction of an air flow passing through the heat exchanger. The orientation of the partition permits the heat transfer tubes to be connected to the tanks in an arrangement so that no portion of the air flow can pass through the heat exchanger without striking at least one of the heat transfer tubes.

Abstract: A heat exchanger is provided with a first tank and a second tank. Heat transfer tubes are disposed between the tanks and are connected to the tanks to place the tanks in fluid communication. Either of the tanks may be divided into chambers by a partition. The partition has at least one portion which is oriented to be angularly offset from the direction of an air flow passing through the heat exchanger. The orientation of the partition permits the heat transfer tubes to be connected to the tanks in an arrangement so that no portion of the air flow can pass through the heat exchanger without striking at least one of the heat transfer tubes.

Abstract: A method and apparatus for indirectly heating a mixed phase stream by contact with a boiling surface located on the inside of the plurality of heat exchange tubes. Improved vaporization of the stream is achieved by equalizing the liquid distribution and the ratio of liquid and vapor entering each tube to overcome poor boiling film heat transfer. The invention uses a means for subdividing the flow entering the heat exchanger into a plurality of streams with each of the divided streams discharging directly into a heat exchange tube. The means for dividing the stream can include baffle arrangements or plugs providing pressure drop at the inlets to the tubes. This method and apparatus is particularly useful in contactors for the sulfuric acid catalyzed alkylation of hydrocarbons.

Abstract: A heat exchanger has tubes and headers, with each tube having both ends connected to the headers in fluid communication. A blockish joint of the flange connection type is attached to one header, and an inlet port and an outlet port are formed in the joint. One or two blockish connectors also of the flange connection type and fixed to ends of external pipings are connected to the joint, such that an effective core area of the heat exchanger is increased, and an operation for connecting the external pipings is rendered simpler and more efficient.

Abstract: An evaporator, which includes a water chamber for receiving water to be evaporated. A plurality of evaporator tubes which when heated, and when water is on an inner wall of a tube, evaporates at least a portion of that water. A plurality of distributors spatially connecting the water chamber with the evaporator tubes in a manner so that each distributor uniformly and distributes the water from the water chamber to an inner wall of a corresponding evaporator tube. A heat source, which heats the plurality of tubes to an evaporation temperature. Apparatus distills the water vapor resulting from the water evaporation to provide distilled water.

Abstract: An improved cryogenic vaporizer and heat-transfer element comprising a tubular housing having outer fin members, a central passage having an upper portion substantially closed to provide a restricted flow of fluid therefrom, an intermediate portion defining a deceleation chamber, and a lower portion in which is mounted a hollow rod that substantially controls the amplitude of liquid surging within the central passage of the housing.

Abstract: A method for reducing the internal erosion of a brazed aluminum heat exchanger, such as a heater core used in automotive applications. The heat exchanger is composed of a tank and header that form a chamber, a number of coolant tubes secured to the header such that ends of the tubes project into the chamber, and an inlet to the chamber disposed opposite to the tubes so as to direct a coolant toward the ends of the tubes. A sacrificial erosion member is brazed to the tank so as to be in the path of the coolant as the coolant flows from the inlet into the chamber, such that the coolant impinges the erosion member as it enters the chamber. As a result, the coolant is deflected away from the ends of the tube so as to reduce erosion of the ends of the tubes. Furthermore, the erosion member serves to enhance the efficiency of the heat exchanger by improving the flow distribution of the coolant among the tubes.

Abstract: A quench cooler or transferline heat exchanger for quenching the effluent from a hydrocracking furnace has an inlet coupling between the cracking furnace tubes and the tubes of the quench cooler which splits the flow into a plurality of branches. The flow passages are configured to initially decelerate and then re-accelerate the gas. This involves a conical diverging diffuser section and then a tapered and branched converging section. The cross sectional transitions are smooth to avoid dead spaces and minimize pressure loss.

Abstract: A condenser for use in air conditioning systems, including a core and headers, the core comprising tubes and corrugated fins sandwiched between the tubes, wherein:width of each tube: 6.0 to 20 mmheight of each tube: 1.5 to 7.0 mmheight of each coolingmedium flow path: 1.0 mm or moreheight of each fin: 6.0 to 16 mmfin pitch: 1.6 to 4.

Abstract: A parallel flow condenser having a plurality of substantially flat, parallel flow tubes are positioned between oppositely disposed headers. The flow tubes provide fluid communication between the headers for cooling fluid which flows through the condenser. Each of the headers is formed from an inner member having an inner wall and a pair of longitudinally extending, parallel sidewalls which protrude outward from the inner wall. The parallel sidewalls terminate in outer edges. An outer member is provided having an outer wall and a pair of longitudinally extending attachment flanges which project inward from the outer wall. The attachment flanges are positioned between the parallel sidewalls of the inner member with the attachment flanges overlapping and joining one of the parallel sidewalls so that the inner and outer members are effectively joined together to form a fluid passage.

Abstract: A refrigerant evaporator for a refrigeration cycle which separates a refrigerant of a two-phase gas and liquid state introduced from a pressure reduction means into a liquid refrigerant and a gas refrigerant by a gas and liquid separation means and distributes at least the liquid refrigerant to a plurality of refrigerant passageways of a heat exchange portion by a distribution means such as a tank. The distributed refrigerant has a single phase such as a liquid refrigerant and therefore the distribution is uniformly and equally carried out, the efficiency of the evaporator becomes higher, and the size can be reduced.

Abstract: A reactor for thermocracking a fluid comprising a heat exchanger having at least one tube for conveying the fluid stream from a respective tube inlet to a tube outlet while contacting the at least one tube with a high temperature medium to effect heat transfer to the fluid stream sufficient to cause thermocracking of the fluid. A quench is provided for discharging a quench liquid so as to be positioned within the thermocracked fluid stream exiting the tube outlet during a cracking operation to immediately lower the temperature of the thermocracked fluid stream sufficient to terminate further thermocracking of the fluid as it emerges from the tube outlet thereby preventing carbon deposition downstream.

Abstract: An evaporator including a frame which defines a fluid inlet plenum and an interchangeable baffle plate positioned in the plenum along with an interchangeable fluid spray bar. A transition element carries fluid from a standard round tubular fluid inlet and distributes the fluid equally across the width of the spray bar. By forming a plurality of interchangeable baffling plates each having at least one of the placement, configuration and size of holes therethrough different than the other interchangeable baffling plates and forming a plurality of interchangeable spray bars each having a different fluid outlet configuration, the baffle plates and spray bars can be interchanged to design an evaporator for air conditioners and the like with the least amount of internal fluid pressure drop and the best fluid inlet flow balance with the best heat performance.

Abstract: The modular heat exchanger system comprises at least a primary heat exchanger having two parallel manifolds with a chosen plurality of heat exchange tubes running therebetween, the manifolds defining a water pathway therein within which baffles are provided to produce a serpentine path through the manifolds and heat exchange tubes of the exchanger, one of the manifolds being an intake manifold and the other being a return manifold having a terminal return chamber, the chamber feeding into a return tube extending through the manifold and exiting the opposite end thereof, the tube being of smaller diameter than the manifold and creating an annular channel therearound through which liquid flowing through the exchanger is routed.

Abstract: A system for preheating air before it enters the combustion chamber of a gas turbine engine includes a recuperator which extends between, and is supported by, forward and rear headers. Cold air to be pre-heated by the recuperator flows through an entry passage in the forward header, then into and through a first conduit of the recuperator which extends the length of the recuperator. The air then flows through a plurality of cross conduits located at different locations along the length of the recuperator where it becomes heated. Flow of the now-heated air continues into a second conduit in which it is guided toward the combustion chamber. Sleeves are provided, respectively, in the entry passage of the forward header and in the first conduit of the recuperator for maintaining substantially constant the pressure differential between the first and second conduits at all locations along the length of the recuperator.

Abstract: A removable flow rate-restricting device (25) is placed and fixed in a through-opening (18) of the tube plate (15) level with which is fixed the tube (6), from inside the water box (9). The flow rate-restricting device (25) includes an orifice plate which is inserted into the opening (18) of the tube plate.

Abstract: An apparatus and method is disclosed for regulating flow of working fluid through parallel condensation tubes requiring subcooling. The apparatus provides an elongated restriction element extending into the outlet of the respective condensation tubes to the approximate point of onset of subcooling. The elongated restriction element is braced externally to the condensation tube with a support that is used for positioning and maintaining the elongated restriction element in the correct position. The elongated restriction element has a pentagonal cross-section and is slightly undersize with respect to the working fluid passageways through the condensation tubes. The restriction member significantly restricts flow of partially vaporized working fluid but does not significantly affect the flow of fully liquid working fluid.

Abstract: A furnace includes at least one heat exchanger with first and second plate members secured together to define passageways that form serpentine flow paths between an inlet passageway and an outlet passageway. The inlet passageway receives hot products of combustion from a burner which extends into it. A blower induces the flow of the combustion products through the heat exchanger. A second blower induces the flow of air over the surfaces of the exchanger.

Abstract: A heat exchanger comprising header pipes, flat tubes extending between the header pipes and fin units extending between the flat tubes is disclosed. The header pipes include a plurality of holes on one side thereof for accepting the flat tubes. On the opposite side of the header pipes is at least one slit in which a partition plate is inserted. During the formation of the header pipe, a pair of projections are formed on the ends of the slit. After the partition plate is inserted into the header pipe, the projections are bent until they engage the partition plate thereby fixedly securing the partition plate within the header pipe.

Abstract: A heat exchanger manifold comprises a tubular manifold, and a plurality of heat exchange tubes connected thereto, the manifold comprising a header part in the form of an elongate member defining a plurality of apertures therein, into which end portions of heat exchanger tubes extend, and a tank part comprising an elongate member which is non-unitarily formed with said header part, and defines a tubular housing with said header part and is joined thereto at longtiduinal engagement surfaces, the said manifold further comprising a plurality of plate-shaped baffles, and an elongate locating rail fitted within said housing and supporting said baffles transversely in said tubular housing.

Abstract: A heat exchanger in which a header and tank construction comprises separate header and tank portions which are used in combination to form a heat exchanger unit. End caps for the header and tank construction and baffles to form partitions or chambers within the header and tank construction are inserted in grooves formed in the separate header and/or tank portion(s). The heat exchanger assembly comprises spaced combined header and tank constructions between which extend a plurality of tubes which are inserted in slots in the header portions. An area of the header portion can have a plurality of center portions and slots between adjacent center portions for the tubular elements. The apexes of each center portion between the tubular element slots have a flattened area and there are side portions running downward from the center portion apex flats which also are substantially flattened.

Abstract: A parallel flow heat exchanger has perforated webs within its tubes. The tubes are parallel to each other and extend between headers. Each tube has webs located within it which define flow passages. The webs are perforated along the length to communicate refrigerant flow in one passage with that of refrigerant flow in other passages. The flow tubes are extruded integrally. The perforations are formed by air jets mounted in the extrusion die cores.

Abstract: A steam coil apparatus for transferring heat between steam passing through the apparatus and air flowing past the apparatus, the apparatus including a plurality of spaced outlet tubes extending substantially parallel to one another in a direction generally transverse to the direction of flow of the second fluid, and a plurality of fins or other extended surface attached to the outlet tubes and extending generally transverse to the outlet tubes. A plurality of inlet tubes are provided, each being received within one of the outlet tubes and formed of a diameter smaller than the diameter of the outlet tube within which it is received. The inlet tubes are provided with axially spaced orifices through which the first fluid passes from the inlet tubes to the outlet tubes. An outlet header is provided in fluid communication with the outlet tubes, and first and second opposed inlet headers communicate with the inlet tubes.

Abstract: A heat exchanger (10) for an automotive vehicle includes a pair of manifolds (12, 14) each including a header portion (24) and a tank portion (26). The tank portion (26) includes a predetermined number of generally horizontal rib portions (30) formed therein at predetermined positions. The heat exchanger (10) further includes a plurality of tubular elements (16) disposed in spaced, substantially parallel relation and which define flow paths for the coolant between the manifolds (12, 14). At least one of the tubular elements (32) has a length greater than an adjacent tubular element (16) and extends through the header portion into mating engagement with the rib portion (30) of the tank (26) of one of the manifolds to form baffle means (36) for preventing the flow of coolant therepast.

Abstract: A heat exchanger comprising an outer tube, one or more inner tubes disposed with interstice within said outer tube, and a spiral element extending longitudinally within said inner tube(s). The spiral element is made up of a plurality of unit elements connected together with a connection angle of 0.degree.. Each of the unit elements has a twist angle of 180.degree., with the direction of twist being reversed from one to a neighboring unit element. Channeling phenomenon is effectively avoided. Heat exchange medium with Rheynolds number Re>10.sup.4 is suitable.

Abstract: The air conditioner condenser includes a set of hollow parallel tubes disposed between a pair of header pipes. The header tubes provide fluid flow between the header pipes and are substantially flat, having parallel upper and lower side walls. The walls have inner and outer surface and are separated by longitudinally extending webs defining separate flow passages. A partition or baffle is formed by removing one of the upper or lower walls from a tube having a length greater than that of the other tubes. The header pipe has a series of slots, each having similar dimensions. The tubes are inserted into the slots and sealed, with the extended portion of the extended tube forming the partition or baffle.

Abstract: A process for improving the efficiency of heat transfer to a flowing fluid in a tubular heat exchanger by placing an injector on the inlet of each heat exchanger tube, the injector designed to create tangential flow in the tube. The injector used to generate tangential flow comprises a tubular cap with multiple passageways therethrough so that fluid entering the passageways enters the heat exchanger tube along a line tangent to the circumference of the hole extending along the length of the heat exchanger tube. A significant increase in heat transfer at the same pumping power is obtained as a result of the cross sectional shape of the passageway and the dimensions thereof in relationship to the inner diameter of the heat exchanger tube.

Abstract: A heat exchanger, typically a cooling radiator for an internal combustion engine of a motor vehicle, has a water header with an integral expansion chamber. The header comprises a header body or casing having an elongated open bottom face closed by a header plate, which is fixed to the header body. Liquid flows in the header between a first end and a second end of the latter, so as to cover the header plate. The header body has a set of transverse, integral baffles spaced apart along the header body between its two ends. Each baffle has a free edge close to the header plate and an opening defining a flow cross section through the baffle. The area of this opening decreases in successive baffles in the direction of flow.

Abstract: An apparatus for distributing a slurry comprising a first section having a dome or cone shape and a plurality of passageways, and a second flat section located below the first section and having a plurality of passageways. The apparatus is useful in distributing a slurry of ice and liquid to a freezing section of an ice crystallizer.

Abstract: A condenser adapted for use in the car cooling system, the condenser comprising a pair of headers provided in parallel with each other; a plurality of tubular elements whose opposite ends are connected to the headers; fins provided in the air paths between one tube and the next; wherein each of the headers is made of a cylindrical pipe of aluminum; wherein each of the tubular elements is made of a flat hollow tube of aluminum by extrusion; and wherein the opposite ends of the tubular elements are inserted into slits produced in the headers so that they are liquid-tightly soldered therein.

Abstract: A laminated plate header, an evaporator and a method for making the same are disclosed. A plurality of plates, having passageways formed therein, are stacked together to form a laminate. The laminate is adapted to fluidly connect between a header inlet and core units of a heat exchanger in the evaporator. The plurality of plates are interleaved in a manner to index selected passageways of the plate such that refrigerant from the inlet is distributed through the passageways to the core units.

Abstract: Inefficiencies in an evaporator for a refrigerant in a refrigeration or air-conditioning system may be avoided in an evaporator having a plurality of tubes (18) in fluid and geometrical parallel through which the refrigerant may pass by providing a refrigerant distributor between an inlet (26) and the tubes (18) which includes an orifice (86) connected to the inlet (26) for directing a stream of refrigerant toward a flat impingement surface (102) from which it is disbursed to a plurality of receiver passages (34) angularly spaced about the periphery of the impingement surface (102) and respectively connected by a fluid passage (38, 44, 50) to an associated one of the tubes (18).

Abstract: A heat exchanger apparatus includes a pair of tanks with parallel tube passes and air centers connected therebetween for cooling the engine fluid, such as a coolant, by the air intake stream to the vehicle. The tanks are formed by an extrusion forming three sides thereof and a header is brazed thereto for forming the fluid chamber in the tanks. The extrusion includes a die formed pocket therein to receive the sides and one end of a partition member and the second end of the partition member is curved to abut the header. The curved second end has flanged ears therein that seat in segments of the die formed pocket which are laterally outwardly of spaced sides segments of the pocket to position the partition within the pocket so that an outer surface thereon will be positioned against a header to form a braze seal between the partition and both the header and the extruded tank.

Abstract: A parallel flow vehicle air conditioning condenser utilizes baffle plates with an interference fit. The baffle plates locate within header and tank assemblies. Parallel tubes extend between the header and tank assemblies for causing refrigerant flow between the header and tank assemblies and through the tubes. The header and tank assembly is made up of two portions which are brazed together. The baffle plate has abutment edges that abut the interior walls of the two portions in an interference fit to deform the walls and cause sealing.

Abstract: Low efficiency in an evaporator for a refrigerant may be increased by providing the evaporator with at least two passes (10, 12) defined by two rows of tubes (20) and four elongated header passages (24, 26, 28, 30) with the header passages (24, 26) being in fluid communication with the tubes (20) in the pass (10) and the header passages (28, 30) being in fluid communication with the tubes (20) in the pass (12). The pass (10) is downstream from the pass (12) and includes an inlet (32) to the header passage (24) intermediate the ends thereof. An outlet (34) is located in the header passage (28) for the pass (12) and intermediate the ends thereof. At least one fluid passage (36) extends between the headers (26, 30) intermediate the ends thereof.

Abstract: A heat exchanger includes a pair of header tanks (4) placed in parallel to each other in a plane; a row of parallel tubes (2) placed in the plane and connected at opposite ends to the header tanks; a plurality of partitions (6, 6') provided in the header tanks to divide each header tank into a plurality of compartments (8a) along the length of the header tank thereby forming a plurality of refrigerant passages (2A, 2B) each consisting of a plurality of multitube paths each having a plurality of the parallel tubes; and a pair of additional tanks (7) each attached to each of the header tanks to form a chamber (8) which communicates with the refrigerant passages through ports formed on the header tank whereby refrigerant is distributed into the plurality of refrigerant passages to provide the reduced flow resistance of refrigerant.

Abstract: A heat exchange humidifier for generation of steam-to-steam or fluid-to-steam humidity may include at least one steam tube in a heat exchanger array which may be coated with a non-stick surface such as tetrafluoroethylene (TEFLON.RTM.) coating or the like, to prevent the build-up of minerals. The steam tubes in the heat exchanger array are in a substantially layered configuration, each layer being offset and below the preceding upper layer, or in helical configuration. This organization of the tubes in the heat exchanger array maximizes convection currents in a fluid surrounding the steam tubes to minimize dead water films and maximize heat transfer from the steam or fluid inside of the tubes to the surrounding water, resulting in an overall increase in boil-off capacity for adding humidity to the air.

Abstract: A heater core includes an inlet tank, a return tank, and an outlet tank. A plurality of parallel inlet flow tubes extend from the inlet tank to the return tank. A plurality of outlet flow tubes extend parallel to the inlet flow tubes between the return tank and the outlet tank. Corrugated cooling fins are disposed between adjacent inlet and outlet flow tubes. A perforated inlet baffle plate is disposed angularly within the inlet tank. The inlet baffle plate has a calculated angular orientation, length, and spacing within the inlet tank. An unperforated return baffle plate is disposed in the return tank. The return baffle plate has a calculated length and spacing within the return tank. The inlet baffle plate and return baffle plate provide uniform coolant flow through the plurality of inlet and outlet flow tubes.

Abstract: A heat exchanger apparatus includes first and second parallel tank units with a core of parallel tube passes and air centers extending therebetween for cooling the fluid in the tanks and flowing through the tube passes. The first tank unit includes an integral main tank and outlet tank. The main tank is connected to an inlet fitting for receiving refrigerant vapor and is in fluid communication with the tube passes. The outlet tank is parallel with the main tank and spaced from the tube passes and includes the outlet fitting for directing the high pressure refrigerant liquid to the evaporator of a refrigerant system in an automotive air conditioning system and an aperture between the main tank and outlet tank supplies refrigerant from the core to the outlet tank.

Abstract: A heat exchanger, finding its application typically as a cndenser in an air conditioning installation for a motor vehicle, comprises a fluid manifold having an elongated tubular wall which carries internal transverse baffles, together with a number of parallel heat exchange tubes penetrating into the manifold through apertures formed in the tubular wall. The transverse baffles are entirely located within the tubular wall and are secured to a connecting member which is elongated along the axis of the tubular wall, which enables the baffles to be fitted simultaneously and held in place, and which also serves as an abutment for the ends of the heat exchange tubes.

Abstract: A condenser, for use in automotive air conditioning systems, including a first header, a second header, a plurality of parallel flat plate pipes arranged between the first and second headers, and corrugated fins between the flat plate pipes for contacting the flat surfaces thereof. A second union joint on the second header introduces refrigerant into the second header. A first union joint on the first header discharges refrigerant to a refrigeration circuit. The first union joint includes a union portion for connecting the first union joint with the refrigeration circuit, a fixed portion with a receiving surface which is fitted on the outer peripheral surface of the first header, and a pipe which is connected to the union portion. The pipe extends downwardly within the first header to the bottom of the first header, and thus, the first union joint discharging liquid refrigerant can be disposed anywhere on the first header.

Abstract: The structure, method of fabrication and uses of enclosed double plate heat transfer panels with prefabricated main panel bodies are introduced. In most applications, a pane is used to conduct a gas-liquid interaction such as vaporization, condesation, gas absorption, gas description, endothermic and exothermic chemical reactions inside while having a heat interaction with a fluid outside that undergoes a complementary operation. A panel (41) incorporates one or more of the following key features:(a) It comprises a prefabricated main body (42) and two reinforced mainfold conduits (47) and (49) welded to the main panel body by welds (45).(b) It has nozzles (48) for applying a liquid film inside the panel.(c) The inside surfaces (51) are textured to improve wettability and drainage.

Abstract: A condenser for a refrigerant circuit including a compressor, a condenser, an expansion valve and an evaporator which are sequentially disposed is disclosed. The condenser includes a plurality of tubes having opposite first and second open ends, and a plurality of fins disposed between the plurality of tubes. First and second header pipes are fixedly disposed at the opposite ends respectively, and the open ends of the tubes are disposed in fluid communication with the interior of the header pipes. The first header pipe has an inlet which links the condenser to an external element of the circuit. The second header pipe has a first open end and a second closed end. An outlet element is disposed at the first open end of the second header pipe and links the condenser to an external element of the circuit. A pipe member is disposed in the second header. One open end of the pipe member is disposed near the closed end of the second header, and the other open end of the pipe member is disposed near the outlet.

Abstract: A heat exchanger includes a plurality of tube elements, and a plurality of fins which are alternately stacked together with the tube elements. A tank element is disposed on both sides of the tube elements. At least one of the tank elements is formed of brazing materials and comprises a pair of plates which are U-shaped in cross-section and form an inner space. A partition plate is positioned in the inner space and divides the inner space into a first space adjacent the tube elements and a second space separated from the tube elements by the first space. The partition plate is also provided with a penetrating hole. Each of the tube elements contain at least first and second coolant flow passages. The first coolant flow passages extend through the penetrating holes and into the second space, and the second coolant flow passages extend into the first passage.

Abstract: A condenser for vaporous materials, in which at least two pipes are assigned to one another in a series arrangement and are circumflowed by a cooling medium. A separation device is provided at the discharge port of every pipe. This separation device causes the residual vapor to separate from the condensation product. The separation devices are connected via collectors to a pair of collecting chambers from which the condensation product is withdrawn.

Abstract: The ends of numerous tubes are connected to hollow headers so that they are in fluid communication with the headers. Slit shaped apertures are formed in the outside face of the headers in the direction of their circumference, and partititions are inserted through the apertures. Each partition is constructed out of two partition plates which fit into the header through the aperture in superimposed position. Alternatively, the partition plates may be connected integrally at one end so that their unconnected ends tightly contact the edges of the slit shaped aperture. The partitions are then braced to the header to become integral with it.