Abstract: A refrigeration system includes a first circuit configured to circulate a first refrigerant. The first circuit includes an evaporator. The refrigeration system also includes a second circuit configured to circulate a second refrigerant. The second circuit includes a receiver associated with the evaporator such that the second refrigerant within the receiver is in a heat exchange relationship with the first refrigerant within the evaporator.

Abstract: A cooling system for a work vehicle is disclosed that includes first and second heat exchangers disposed one above the other to create two discrete flow paths. The upper heat exchanger is an engine water cooler and the lower heat exchanger may be an intercooler, an oil cooler or a refrigerant condenser. The lower heat exchanger is disposed forward of the upper heat exchanger. Additional heat exchangers may be positioned in front of the first and second heat exchangers to provide additional cooling. The first and second heat exchanger may be cross-flow heat exchangers conducting the fluid to be cooled laterally through the core of the heat exchanger.

Abstract: Heat exchanger systems and associated systems and methods for cooling aircraft starters/generators are disclosed. A system in accordance with one embodiment includes a first fluid flow path for a first fluid, a second fluid flow path for a second fluid, and a third fluid flow path for a third fluid. The first and second flow paths are positioned proximate to the third flow path to transfer heat between the third fluid and both the first and second fluids. The third flow path is configured to allow a transfer of heat between the second and third fluids at a first transfer rate when the first fluid carries heat at a first rate, and at a second transfer rate different than the first transfer rate when the first fluid does not carry heat, or carries heat at a second rate less than the first rate. Accordingly, when the heat to be rejected by one fluid is decreased, the heat transfer rate for the remaining fluid can be increased.

Abstract: The invention provides an improved process and apparatus for integrating the heat transfer zones of spiral-wound, plate fin, tube and finned tube exchangers thus increasing the overall effectiveness of the process.

Abstract: A heat exchanger assembly has a first heat exchanger with a first heat radiating area receiving a first cooling fluid, a second heat exchanger with a second heat radiating area receiving a second cooling fluid and a third heat radiating area receiving a third cooling fluid. In use, the difference in temperature between the first cooling fluid entering and exiting the first heat radiating area is greater than the difference in temperature between the second cooling fluid entering and exiting the second heat radiating area and greater than the difference in temperature between the third cooling fluid entering and exiting the third heat radiating area. The temperature of the second cooling fluid flowing through the second heat radiating area is higher than the temperature of the third cooling fluid flowing through the third heat radiating area.

Abstract: Method for carbamate condensation of a carbon dioxide/ammonia gaseous phase in a liquid phase in a condensation unit of the so-called submerged type comprising a heat exchange tube bundle having a predetermined number of tubes intended for carbamate condensation, wherein the gaseous phase and the liquid phase are fed contemporaneously and independently to each of the tubes intended for condensation.

Abstract: A safety heat exchanger for combining a heat pump with a device of a drinking water supply facility for obtaining heat from drinking water. The heat exchanger includes a primary circulation loop (4) with drinking water, a secondary circulation loop (6) with antifreeze as a material that does not pose a health risk, and a tertiary circulation loop (7) with a coolant. The primary circulation loop (4) includes an inlet (3) connected to a drinking water supply facility and an outlet (5) with electrically controllable magnetic valves (16).

Abstract: A heat exchanger includes left and right header tanks disposed in parallel; top and bottom side plates that couple respectively both ends of the pair of the header tanks; a first plurality of tubes connected between the pair of the header tanks at both ends that are disposed in a region nearer the bottom side plate as a condenser; and a second plurality of tubes that are disposed in a region nearer the top side plate as an oil cooler. Each tube in the second tubes has a cross-sectional shape identical to that of each tube in the first tubes and the top side plate is formed to have a squared U-shaped cross section so that a return pipe communicating with the second tubes can be disposed along a groove having the squared U-shaped cross section of the top side plate.

Abstract: A cooling system for a work vehicle is disclosed that includes first and second heat exchangers disposed one above the other to create two discrete flow paths. The upper heat exchanger is an engine water cooler and the lower heat exchanger may be an intercooler, an oil cooler or a refrigerant condenser. The lower heat exchanger is disposed forward of the upper heat exchanger. Additional heat exchangers may be positioned in front of the first and second heat exchangers to provide additional cooling. The first and second heat exchanger may be cross-flow heat exchangers conducting the fluid to be cooled laterally through the core of the heat exchanger.

Abstract: In a heat exchanger including a plurality of tubes 1 through which a first fluid passes, a housing 2 in which the tubes 1 are installed, and sealing members for sealing a second fluid that flows over surfaces of the tubes 1, the housing 2 includes an inlet 4 for introducing the second fluid therein and a first outlet 5 and second outlets 6 for discharging the second fluid, and the sealing members include a first sealing member 3a positioned on one of end sides of the tubes 1, a second sealing member 3b positioned on the other end side of the tubes 1, and a third sealing member 3c positioned between the first and second sealing members 3a and 3b. The third sealing member 3c is provided so that a gap 7 is provided between the first sealing member 3a and the third sealing member 3c while another gap 7 is provided between the second sealing member 3b and the third sealing member 3c, and that a flow path for the second fluid is formed therein. The second outlets 6 are provided so as to be connected to the gaps 7.

Abstract: A fluid cooling device embodied as a modular unit includes a drive motor (10) driving a ventilation wheel (12) and a fluid pump (14) that supplies a first type of fluid into a fluid system, and leads to a heat exchanger (22) from which the fluid is redirected into the fluid system in a tempered manner. A second fluid pump (32) is used to extract a second type of fluid from the reservoir (30) and to supply the second type of fluid to a second fluid system, from which the second type of liquid is redirected towards the reservoir (30) in a guiding manner via the first heat exchanger (22) and the second heat exchanger (24). The second fluid pump enables different tempering operations to be carried out for separate fluid systems, using only one fluid cooling device.

Abstract: A drying device includes an air/air heat exchanger and an air/refrigerant heat exchanger. The air refrigerant heat exchanger includes a phase change material.

Abstract: A plate-fin heat exchanger having alternating layers for exchanging heat between fluids to be warmed against fluids to be cooled. One or both of the layers is subdivided into flow passages to allow for the flow of two or more fluids flowing through one of the layers to engage in indirect heat transfer with one or more fluids flowing through another adjacent layer. The flow through the heat exchanger is parallel to the width of the heat exchanger. The first and second layers provide a greater cross-sectional flow area for each of the fluids than otherwise would have been provided had the fluids flow been parallel to the length of the heat exchanger with layers thereof dedicated to the flow of each of the fluids.

Abstract: Methods and apparatus for heating and cooling portions of a fluid are provided. The method may include flowing a stream of a fluid through a first coil of a heat exchanger, separating a liquid component from the stream of the fluid, flowing the liquid component through a second coil of the heat exchanger, and flowing the stream of the fluid leaving the first coil over the first coil and the second coil, thereby cooling the stream of fluid flowing through the first coil and heating the liquid component flowing through the second coil. The apparatus may include a housing, a heat exchanger disposed within the housing, a separation chamber disposed within the housing and operable to separate a liquid component of the fluid, and a control system in fluid communication with the separation chamber and the heat exchanger, wherein the control system is operable to direct the liquid component from the separation chamber to the heat exchanger.

Abstract: A thermal management system for a vehicle comprises a radiator and a liquid cooled condenser in fluid communication with the radiator. The liquid coolant circulates through the radiator and the condenser. The refrigerant for an HVAC unit also circulates through the condenser, with the condenser transferring heat from the refrigerant to the liquid coolant. The heat exchanger is disposed within the condenser and is in fluid communication with an engine for circulating an engine oil therebetween. The heat exchanger transfers heat from the engine oil to the liquid coolant within the condenser.

Abstract: The present invention provides a heat exchange reactor comprising a reaction tube for obtaining a product (B) by exothermic reaction while passing a starting compound (A) therethrough and a reactor shell covering the surrounding of the reaction tube and having its interior divided into a plurality of regions along the passing direction of the starting compound (A), each of which regions is filled with a heat medium for carrying out heat exchange between the inside of the reaction tube and the heat medium independently for the respective separate regions; wherein the reactor is provided with a heater for heating the heat medium charged in the most upstream region among the separate regions independently from the heat media charged in other regions.

Abstract: An integrated hybrid heat exchanger with a multi-sectional structure, may include a first radiator and a second radiator, and/or at least a coolant bypass member disposed between the first and second radiators, the coolant bypass member connecting one end portion of the first radiator and the other end portion of the second radiator so as to fluid-communicate between the first radiator and the second radiator.

Abstract: A drying device includes an air/air heat exchanger and an air/refrigerant heat exchanger. The air refrigerant heat exchanger includes a phase change material.

Abstract: A heat exchanger has at least three tubular conduits spaced apart for the flow of air between and around the conduits. The conduits communicate with inlet and outlet manifolds for the flow of a first liquid through the conduits. An intermediate conduit is located between at least two, but not all, of the spaced-apart tubular conduits, and the intermediate conduit has inlet and outlet openings for the flow of a second liquid through the intermediate conduit.

Abstract: A shell-and-tube reactor or heat exchanger comprises first tubes, through the inside of which a first object for heat transfer with a heat transfer medium is passed, some of the first tubes being provided in a zone in which a flow of the heat transfer medium (parallel flow) parallel to the axis of the tubes is present; and a second tube, through the inside of which the first object is not passed, the second tube being provided in said zone such that it is parallel to the axis of the first tubes. A method for producing an oxide comprises using said shell-and-tube reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in first tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.

Abstract: A heat exchange apparatus includes first and second sections. The apparatus further includes a first cross-flow fluid passageway disposed at least partially within the first section, defined by an internal surface of the first section, and including an inlet and outlet. The apparatus includes a second cross-flow fluid passageway disposed at least partially within the second section and including an inlet and an outlet. The apparatus includes an interior fluid passageway with at least one tube disposed at least partially within the first section and at least partially within the second section, extending at least partially through the first passageway and at least partially through the second passageway, and including at least an inlet and an outlet. A sealing zone is disposed between the first section and the second section. The sealing zone isolates the first section from the second section either or both mechanically and in fluid communication.

Abstract: A high-temperature and high-pressure corrosion-resistant process heat exchanger for a nuclear hydrogen production system decomposes sulfite (SO3) using heat from a high-temperature gas-cooled reactor to thereby produce sulfide (SO2) and oxygen (O2). The process heat exchanger comprises second and third system coolant channels, each of which is defined by a heat transmission fin, which is bent in a quadrilateral shape, and heat transmission plates, and has increased corrosion resistance thanks to ion-beam coating and ion-beam mixing using a material having high corrosion resistance. The third system coolant channel includes reaction catalysts for SO3 decomposition, and is made of a super alloy. Thus, a system differential pressure between the second and third system coolant channels can be greatly maintained at a high temperature of 900° C. or higher.

Abstract: A heat exchanger structure of an automatic transmission stabilizing a temperature of oil is provided. A heat exchanger structure of an automatic transmission includes an automatic transmission, a first heat exchanger provided on an upstream side and a second heat exchanger provided on a downstream side, each capable of cooling oil ejected from the automatic transmission, and a thermo valve capable of supplying oil subject to heat exchange by at least one of first and second heat exchangers to the automatic transmission. When a temperature of the oil is relatively low, the thermo valve supplies oil passed through the first heat exchanger to the automatic transmission and shuts off a flow of oil from the second heat exchanger to the automatic transmission. When a temperature of the oil is relatively high, the thermo valve supplies oil passed through first and second heat exchangers to the automatic transmission.

Abstract: A compact heat exchanger for interchanging thermal energy between at least two fluids, one of which fluids may be a refrigerant in hot or cold form or in a liquid/vapor phase, and another of which fluids is a thermal transfer fluid. The heat exchanger may incorporate an internal heating element. The thermal transfer fluid is transported between two concentric metal tubes, while the refrigerant moves along a tubing helically wrapped about or between the tubes and is in thermal contact therewith.

Abstract: A heat exchanger for a motor vehicle including a pair of tanks located apart from each other and a core part located between the pair of tanks. The core part has a plurality of tubes and a plurality of corrugated fins arranged between the adjacent tubes, where the corrugated fins are formed with a plurality of louvers. The corrugated fins have an upstream projecting portion provided with a projecting portion so that cooling air converges downward to be conducted to the louvers by the projecting portion.

Abstract: A FC radiator in a FC cooling system, an EV radiator in a driving device cooling system, and a condenser in an air conditioning cooling system are arranged in one plane substantially perpendicular to a direction in which a fuel cell vehicle moves forward at a front portion of the fuel cell. Also, heat exchangers are arranged in order of the condenser, the EV radiator, and the FC radiator, that is, in order of an operating temperature from an upper position to a lower position. An angle of plural fins fitted to a front grille is changed according to a load of a fuel cell and a vehicle speed, each of the plural fins being formed to have an elongate rectangular plate shape extending in a horizontal direction.

Abstract: A gas cooler and heat exchanger assembly comprises a gas cooler, including a cylindrical inlet header and a cylindrical outlet header, and a heat exchanger, including a first tank and a second tank, with at least a portion of each of the tanks being cylindrical and being an extension of and integral with each of the associated and aligned headers. In the first embodiment, the entirety of each of the tanks is cylindrical in shape and extends from the associated header. Each of the tanks is bisected thus defining a semi-cylindrical hot chamber and a semi-cylindrical cool chamber. In the second embodiment, only the cylindrical hot chamber of each of the tanks is cylindrical in shape and extends from the associated header. An additional box-shaped structure defines a box-shaped cool chamber disposed along and inwardly of each of the cylindrical hot chambers.

Abstract: The invention provides a method and apparatus for integrating the heat transfer zones of plate fin and tube and finned tube exchangers and a catalytic mass transfer zone. The invention also provides a method for in situ regeneration of existing coated surface and augmentation of existing coated surface, or catalyst performance.

Abstract: A heat exchanger suitable for a vehicle includes a plurality of tubular first members arranged in a row and forming elongate gaps. These members form passageways for flow of a first fluid for heat exchange with cooling air flowing through the gaps. The first members and gaps form a primary heat exchange area. Inlet and outlet manifolds are connected to the first members for directing the first fluid through the first members. An associated cooling device circulates liquid coolant and comprises flat tube-like second members, each extending into a respective gap in a secondary area which is part of the primary area but smaller. The second members each have a thickness at least the width of their respective gaps. At least some of the first members can be formed with cut-outs in opposite flat sides, these cut-outs being sealingly closed by the second members.

Abstract: A heat exchanger module includes a condenser for condensing a refrigerant, a modulator, a sub-cooler for cooling liquid refrigerant supplied from the modulator, and a heat exchanger for cooling a fluid different from the refrigerant. The condenser, the sub-cooler and the heat exchanger are arranged in an arrangement direction substantially perpendicular to an air flow direction. Further, the modulator is disposed to extend in the arrangement direction. In the heat exchanger module, the modulator has a dimension that is larger than the sum of a dimension of the condenser and a dimension of the sub-cooler, and is not larger than the sum of the dimension of the condenser, the dimension of the sub-cooler and a dimension of the heat exchanger, in the arrangement direction. Accordingly, a capacity of the modulator can be effectively increased without increasing a largest outer side of the heat exchanger module.

Abstract: A heat exchanger assembly includes a pair of outer headers each defining an outer cavity and a pair of inner headers each defining an inner cavity. Each inner header is disposed in one of the outer headers, and each header defines a plurality of header slots. A plurality of first fluid tubes extend between the outer headers from one of the header slots of each outer header to fluidly interconnect the outer cavities defined by the outer headers and a plurality of second fluid tubes are interleaved with the first refrigerant tubes and extend between the outer headers and through one of the header slots of each outer header and through the associated outer cavities defined by the outer headers and to the one of the header slots of each inner header to fluidly interconnect the inner cavities defined by the inner headers.

Abstract: An oil cooler is contained in a radiator tank. It includes a connecting pipe having an enlarged diameter portion, a heat exchange part including elements and a communicating passage fluidically communicating the elements, and a pipe connector. The pipe connector has a first retaining portion seated on one side of a wall portion of the radiator tank to contain and fix at least a part of the enlarged diameter portion of the connecting pipe by caulking, and a second retaining portion inserted through a through-hole of the wall portion and an one end portion of the communicating passage to fix the heat exchanger part and the wall portion at the other side of the wall portion by caulking.

Abstract: A heating heat exchanger in a coolant circuit for motor vehicles is provided whereby the air to be heated can be additionally heated by a refrigerant circuit, operable as heat pump or short circuit, for additional heating. A gas cooler/condenser for the additional heating operation and a functionally separated evaporator for the cooling plant operation of the refrigerant circuit are provided. The heat exchanger surfaces of the gas cooler/condenser for the additional heating operation are integrated into the heating heat exchanger and an additional heating operation the air to be heated is simultaneously heated by the heating heat exchanger and the gas cooler/condenser.

Abstract: An improved heat exchanger for an automotive vehicle, comprising at least one end tank; and at least two heat exchangers including a plurality of spaced apart metal tubes with fins between the spaced tubes. The heat exchangers are preferentially disposed so that their respective tubes and fins are generally co-planar with each other and are connected to the end tank. In preferred embodiments, the heat exchanger may include a radiator element.

Abstract: In a vehicle air conditioner, a cooling heat exchanger for cooling air is arranged in the air conditioning case, and a cooling/heating switching heat exchanger is arranged at a downstream air side of the cooling heat exchanger in the air conditioning case. A first bypass passage is provided at one side of the cooling heat exchanger in the air conditioning case, so that air flows through the first bypass passage while bypassing the cooling heat exchanger. A second bypass passage is provided at one side of the cooling/heating switching heat exchanger in the air conditioning case on an opposite side of the first bypass passage with respect to the first heat exchanger, so that air flows through the second bypass passage while bypassing the cooling/heating switching heat exchanger. Accordingly, a size of the air conditioner can be effectively decreased while a maximum cooling capacity can be sufficiently obtained.

Abstract: The present invention relates to a heat exchanger for a vehicle, in which a second radiator as a heat exchanger for cooling electronic components, such as an inverter and a motor, and a first radiator as a heat exchanger for cooling an engine are manufactured into an integral-type heat exchanger, and a reservoir tank is integrally coupled to the integral-type heat exchanger.

Abstract: A radiator and oil cooler combination for an internal combustion engine includes a concentric type oil cooler in the radiator inlet or outlet tank. A baffle directs coolant flow around the oil cooler. In one embodiment, the baffle is between an inner surface of the outlet radiator tank housing and the outer wall of the oil cooler forming a barrier substantially filling the space therebetween. The baffle is located away from the ends of the oil cooler, intermediate the length thereof, and intermediate the length of the outlet radiator tank containing the tube openings. In another embodiment, the baffle is between and spaced from the oil cooler and the radiator core tube openings. The baffle extends along at least a portion of the length of the outlet radiator tank containing the tube openings and overlaps at least a portion of the length of the oil cooler. In a further embodiment, the baffle is located in the radiator tank near one end of the oil cooler and has an opening spaced from the oil cooler outer wall.

Abstract: Optimized designs of heat exchangers, and, in particular, heat exchangers and assemblies comprising multi-exchangers or combo coolers comprising different heat exchanger parts or elements, and fins or separators of different types and/or characteristics on the different tube parts of the heat exchanger results, are disclosed. The two part heat exchanger is capable of being traversed by different fluids, and fins differ in characteristics, such as height and pitch, to increase overall heat exchanger efficiency.

Abstract: The invention relates to a coolant radiator for a motor vehicle, comprising a radiator block (2) made of tubes and ribs, a coolant inlet area (5) comprising a coolant inlet pipe connection (7), a cooling agent outlet area (6) comprising a cooling agent outlet pipe connection (8), wherein an oil radiator provided with oil connections (10, 11) which are guided out from the cooling agent area (6) is arranged. According to the invention, the coolant outlet connection (8) is arranged between the oil connections (10, 11).

Abstract: The present invention relates to an integral-type heat exchanger with integrally formed heat exchange portions, in which the heat transfer between heat exchange portions is effectively intercepted, a core portion without a tank is respectively formed to improve the productivity, and the tank is used in common.

Abstract: Heat exchanger systems and associated systems and methods for cooling aircraft starters/generators are disclosed. A system in accordance with one embodiment includes a first fluid flow path for a first fluid, a second fluid flow path for a second fluid, and a third fluid flow path for a third fluid. The first and second flow paths are positioned proximate to the third flow path to transfer heat between the third fluid and both the first and second fluids. The third flow path is configured to allow a transfer of heat between the second and third fluids at a first transfer rate when the first fluid carries heat at a first rate, and at a second transfer rate different than the first transfer rate when the first fluid does not carry heat, or carries heat at a second rate less than the first rate. Accordingly, when the heat to be rejected by one fluid is decreased, the heat transfer rate for the remaining fluid can be increased.

Abstract: A plurality of tubes and corrugated fins are piled up and arranged alternatively, for integrally assembled heat exchangers. The corrugated fin has fin portions for the heat exchangers and a connecting portion connecting the fin portions. The connecting portion is formed with slits arranged in first and second lines extending in a longitudinal direction of the fin and at least one louver between the slits in the lines. The slits in the first line and the slits in the second line traverse a top portion and a bottom portion adjacent to the top portion of the fin and the louver is formed on an intermediate portion between the top portion and the bottom portion so that the louver is located between the space of the slits in the first line and the space of the slits in the second line.

Abstract: A tubular heat exchanger preferably of a multi-pass design, has a cylindrical shell with open ends that are releasable covered and sealed by preferably two end caps. Located removably in the shell and axially between the end caps is a core having a plurality of outer tubes and preferably a plurality of inner tubes with each one of the inner tubes extending through a respective one of the outer tubes. A plurality of perforated plates disposed in the shell are sealed releasably to respective ends of the inner and outer tubes thereby forming a plurality of liquid tight chambers for the flow of a plurality of segregated mediums and the transfer of heat therebetween.

Abstract: The invention concerns a condenser consisting of stacked plates (2) provided each with a raised peripheral edge (3) in sealed assembly to define flow channels between the plates for a refrigerating fluid (F1) and a cooling fluid (F2). The plates comprise communicating passageways (124) for the passage of the refrigerating fluid and the cooling fluid from one flow channel to the other. Annular ducts (122) are provided opposite the communicating passageways to prevent the fluids from being mixed. A bottle (100) is interposed between a cooling section (94) and sub-cooling section (96). The invention is applicable to motor vehicles.

Abstract: A system for cooling charge air from a turbo- or supercharger and exhaust gas recirculated from an exhaust gas recirculation valve in an internal combustion engine. The system includes a radiator and parallel charge air and exhaust gas heat exchanger units, the charge air heat exchanger unit having aluminum tubes and fins for air cooling the charge air, and the exhaust gas heat exchanger unit having stainless steel tubes and fins. The charge air heat exchanger and the exhaust gas heat exchanger units are each disposed adjacent the radiator, on the same or opposite sides. Alternatively, there is provided a pair of combined charge air cooler and exhaust gas cooler heat exchanger units, with a first heat exchanger unit having stainless steel tubes and fins, and a second heat exchanger unit having aluminum tubes and fins. The heat exchanger units are disposed on opposites sides of the radiator.

Abstract: A cooling system for a work machine is disclosed. The cooling system has a heat exchanger pivotally connected along a pivot axis. The cooling system also has a first fluid conduit and a second fluid conduit. The first fluid conduit is connected to a first end of the heat exchanger at the pivot axis. The second fluid conduit is connected to the heat exchanger at a second end opposite the first end.

Abstract: An improved precision cooling system for high heat density applications comprises a heat exchanger having more fluid outlet conduits than fluid inlet conduits to optimize the pressure drop across the heat exchanger at a given fluid flow rate. The heat exchanger may be of microchannel or tube fin construction, and the cooling system may utilize single phase or multi-phase pumped or compressed fluids.

Abstract: Heat exchanger systems and associated systems and methods for cooling aircraft starters/generators are disclosed. A system in accordance with one embodiment includes a first fluid flow path for a first fluid, a second fluid flow path for a second fluid, and a third fluid flow path for a third fluid. The first and second flow paths are positioned proximate to the third flow path to transfer heat between the third fluid and both the first and second fluids. The third flow path is configured to allow a transfer of heat between the second and third fluids at a first transfer rate when the first fluid carries heat at a first rate, and at a second transfer rate different than the first transfer rate when the first fluid does not carry heat, or carries heat at a second rate less than the first rate. Accordingly, when the heat to be rejected by one fluid is decreased, the heat transfer rate for the remaining fluid can be increased.

Abstract: A heat exchanger has a first heat exchanger with a first heat radiating area receiving a first cooling body, a second heat exchanger with a second heat radiating area receiving a second cooling body and a third heat radiating area receiving a third cooling body. In use, the difference in temperature between the first cooling body entering and exiting the first heat radiating area is greater than the difference in temperature between the second cooling body entering and exiting the second heat radiating area and greater than the difference in temperature between the third cooling body entering and exiting the third heat radiating area. The temperature of the second cooling body flowing through the second heat radiating area is higher than the temperature of the third cooling body flowing through the third heat radiating area.

Abstract: A heat exchanger comprising an inlet chamber, an outlet chamber, and a plurality of flat tubes through which the fluid passes and is cooled by ambient air or coolant. The flat tubes are formed by extrusion and include internal fluid paths to promote cooling of the fluid passing within. The fluid paths, which are formed at the same time as the tubes, may include flanges to further promote the transfer of heat. Through the use of such extruded tubes with internal fluid paths, the need for a turbulator component commonly assembled into cooling tubes may be eliminated or minimized.