Abstract: A heat exchange cell includes a casing, a heat exchanger in which a first heat transfer fluid flows, a feeding zone, and first and second collection chambers for a second heat transfer fluid. The casing can include rear, front, and peripheral side walls. The heat exchanger can be helically-shaped, mounted in the casing, and include at least one tubular duct for the flow of the first heat transfer fluid. The tubular duct can be coiled about a longitudinal axis and define a helix. The feeding zone of the second heat transfer fluid can be defined in the casing coaxially and internally with respect to the helix. The first chamber can be defined externally with respect to the heat exchanger by a radially outer wall thereof and the peripheral side wall. The second chamber can be at least partially delimited by at least one separating element.

Abstract: In a method for producing a thermal component (1, 1?) a pipe (2, 2?,2?) having a fluid channel (3, 3?, 3?) with an inner profile (4, 4?) is provided, and a swirler (6, 6?) having an outer profile (5, 5?) corresponding to the inner profile (4, 4?) is inserted into the fluid channel (3, 3?, 3?). A thermal component (1, 1?) manufactured in this manner includes a pipe (2, 2?, 2?) having a fluid channel (3, 3?, 3?), and a swirler. The fluid channel (3, 3?, 3?) of the pipe (2, 2?, 2?) includes an inner profile (4, 4?) corresponding to an outer profile (5, 5?) of the swirler (6, 6?), and the swirler is disposed in the fluid channel (3, 3?, 3?).

Abstract: Liquid-cooled heat sink assemblies are provided which include: a thermally conductive base structure having a sidewall surface and a main heat transfer surface; and a manifold structure attached to the base structure, with the base structure residing at least in part within a recess in the manifold structure. Together, the base and manifold structures define a coolant-carrying compartment through which liquid coolant flows, at least in part, in a direction substantially parallel to the main heat transfer surface of the base structure, and at least one of the sidewall surface of the thermally conductive base structure or an opposing surface thereto of the manifold structure includes a continuous groove. A sealing member is disposed, at least in part, within the continuous groove, and provides a fluid-tight seal between the thermally conductive base structure and the manifold structure.

Abstract: Liquid-cooled heat sink assemblies are provided which include: a thermally conductive base structure having a sidewall surface and a main heat transfer surface; and a manifold structure attached to the base structure, with the base structure residing at least in part within a recess in the manifold structure. Together, the base and manifold structures define a coolant-carrying compartment through which liquid coolant flows, at least in part, in a direction substantially parallel to the main heat transfer surface of the base structure, and at least one of the sidewall surface of the thermally conductive base structure or an opposing surface thereto of the manifold structure includes a continuous groove. A sealing member is disposed, at least in part, within the continuous groove, and provides a fluid-tight seal between the thermally conductive base structure and the manifold structure.

Abstract: Network switching and/or routing devices can use multiple priority data streams and queues to support prioritized serial transmission of data from line cards (or the like) through a fabric switch to other line cards (or the like). Preemption logic is used to insert within a data stream commands indicating a switch from one priority level data to another. Delimiter commands and combination switch/delimiter commands can also be used. Multiple crossbars are implemented in the fabric switch to support the various data stream priority levels.

Abstract: A heat exchanger collects exhaust heat of high temperature so as to warm up an engine and to heat a cabin and a battery and reduces noise of an exhaust gas.

Abstract: A plurality of flat tubes formed as a tube having notches by linearly cutting upper and lower parts from a hollow flat circular doughnut shape are stacked to structure a tube laminate. It is attached to a case so that a notch aligns with the notch and faces upward by an exhaust inflow end plate and that a notch aligns with the notch and faces downward by an exhaust outflow end plate. A cutoff valve is provided at an exhaust outflow end of an exhaust communication tube passing through the center of the tube laminate by heat insulation. While an internal combustion engine is warming up, the cutoff valve is closed to cause the exhaust to flow in gaps of the respective flat tubes from upward to downward as a whole and also a heat exchange medium is caused to flow in the respective flat tubes from downward to upward as a whole to have heat exchanged between the exhaust and the heat exchange medium to recover the exhaust heat.

Abstract: A gas preheater (10) that includes an exit plate (20) having first and second sides (22, 24) and a plurality of through holes (26) and at least one body (34) mounted adjacent the first side (22), the at least one body (34) having a first end (36) and a second end (38), the second end (38) located between the body first end (36) and the exit plate first side (22), at least one sidewall (40) connecting the first and second ends (36, 38), a body opening (42) in the first end (36) extending into the body (34) and defining a body inner wall (44), and a plurality of passages (46) extending between the at least one sidewall (40) and the body inner wall (44).

Abstract: A gas preheater (10) includes an entrance plate (12) having a first side (14), a second side (16), at least one opening (18) connecting the first side (14) and the second side (16), and a plurality of walls (19) on the second side (16) having tops (21) spaced from the second side (16), the walls (19) defining at least one circuitous pathway (22e, 22f, 22g, 22h) on the second side (16) beginning at the at least one opening (18), and a diffuser plate (40) having a first side and a second side and a plurality of holes (42) between the first side and the second side, the diffuser plate first side defining with the entrance plate second side (16) and the plurality of walls (19) at least one circuitous passage along the at least one circuitous pathway (22e, 22f, 22g, 22h), the at least one circuitous pathway having a first portion (22e1) leading from the at least one opening (18) and a second portion (22e2) spaced from the at least one opening (18), wherein the holes (42) in the diffuser plate (40) overlie the circ

Abstract: An structure and method of manufacturing a microstructure for use in a heat exchanger is disclosed. The heat exchanger comprises a manifold layer and an microstructured region. The manifold layer comprises a structure to deliver fluid to the microstructured region. The microstructured region is formed from multiple windowed layers formed from heat conductive layers through which a plurality of microscaled apertures have been formed by a wet etching process. The plurality of windowed layers are then coupled together to form a composite microstructure.

Abstract: A flexible heat exchange jacket is provided which has channels for flow of a heat exchange fluid along one side, with inlets and outlets attached to a source of heat exchange fluid. The jacket can be attached in a watertight manner around the circumference of a cylindrical process container containing a liquid for heat treatment. Preferred embodiments include devices for heating and/or cooling the heat exchange fluid prior to entering the jacket, mixers for the liquid under treatment within the container, and heaters for the liquid within the container and/or the bottom of the container itself. A dairy pasteurizer version combines a cylindrical process container with a heat exchange jacket installed around its exterior with heating and refrigeration units for the heat exchange fluid, heat sensing and mixing devices, and a control system programmed to execute a pasteurization cycle.

Abstract: In apparatus for heat exchange to and from a body surface using a heat transfer liquid a heat exchanger comprises a plurality of elements within a casing connected axially against one another with spacer tube elements. Each element has its periphery spaced from the body surface to provide a flow gap for heat transfer fluid in heat exchange contact with the surface. The element have plenums separating each from one another forming connecting flow spaces for the heat transfer liquid between the heat transfer flow gap and inlet and outlet passages passing through the body. A preferred apparatus is a cylindrical rotor within a cylindrical stator with an annular processing space between them, the rotor containing a stack of heat exchange elements of the respective shape permitting high heat flux rates and uniform temperature distribution over the total rotor heat transfer surface.

Abstract: A heat exchanger comprises a housing jacket and tube segments disposed concentrically inside the housing jacket. Between two receiving plates, closing the housing jacket on its face ends, the tube segments embody heating chambers and product chambers. While the product to be heated flows in a meandering course through the heat exchanger, the heating medium flows through the heat exchanger over short paths from a medium inlet stub, in the direction of a medium outlet stub. The heat exchanger of the invention is distinguished by a relatively simple construction and is especially suitable for compositions in the candy industry, using steam as the heating medium.

Abstract: A heat exchange device for harnessing heat from an exhaust vent is provided including a furnace having a main inlet for receiving cooled air suctioned from a living area, a heating mechanism for heating the cooled air suctioned from the living area, a main outlet for delivering air to the living area which is heated by the heating mechanism, and an exhaust vent coupled to the furnace for expelling air associated with the generation of heat by the heat mechanism with such expelled air not being fit for channeling to the living air via the outlet. Next provided is a housing which divides the exhaust vent into a lower portion and an upper portion. The housing has an auxiliary inlet in communication with the living area for receiving the cooled air therefrom and an auxiliary outlet in communication with the living area for expelling air thereto. Lastly, a heat transfer mechanism includes a pipe formed in the shape of a helix.

Abstract: A reactor arrangement and process for indirectly contacting a reactant stream with a heat exchange stream uses an arrangement of heat exchange plates to control temperature conditions by varying the heat transfer factor in different portions of a continuous channel defined by the heat exchange plates. The reactor arrangement and process of this invention may be used to operate a reactor under isothermal or other controlled temperature conditions. The variation in the heat transfer factor within a single heat exchange section is highly useful in maintaining a desired temperature profile in an arrangement having a cross-flow of heat exchange medium relative to reactants. The corrugations arrangement eliminates or minimizes the typical step-wise approach to isothermal conditions.

Abstract: A reactor arrangement and process for indirectly contacting a reactant stream with a heat exchange stream uses an arrangement of corrugated heat exchange plates to control temperature conditions by varying the number and/or the arrangement of the corrugations along the plates. The reactor arrangement and process of this invention may be used to operate a reactor under isothermal or other controlled temperature conditions. The variation in corrugation arrangements within a single heat exchange section is highly useful in maintaining a desired temperature profile in an arrangement having a cross-flow of heat exchange medium relative to reactants. The corrugations arrangement eliminates or minimizes the typical step-wise approach to isothermal conditions.

Abstract: A structure comprising an LP module of a steam turbine supported by a concrete support-block carried by posts standing on a concrete raft, and an enclosure constituted by an exhaust box surrounding the LP module and connected thereto via elastic seals and by a condenser provided with bundles disposed beneath the LP module and resting on the raft, wherein the enclosure is made of concrete. The condenser envelope made of concrete is thus totally independent of the turbine and of its support-block.

Abstract: An exchanger for oxygenating blood includes a casing having walls and a cavity, sheet material with first and second ends covering distal edges of the walls, and a cover extending over the cavity to sandwich the first and second ends of the sheet material between the cover and the edges of the walls. The cover is melted into the sheet material and the distal edges of the walls. In another embodiment, a blood oxygenator includes a first compartment having a closed casing divided by a folded sheet of membrane material forming a first blood chamber and a first gas chamber. The casing has first and second manifolds in fluid communication with the first blood chamber. A second compartment is interconnected with the first compartment and has a closed casing divided by a folded sheet of membrane material forming a second blood chamber and a second gas chamber. The casing has third and fourth spaced apart manifolds in fluid communication with the second blood chamber.

Abstract: A method for manufacturing an exchanger includes the steps of folding sheet material in a series of pleats, placing the folded sheet material in a casing having an opening defined by walls with distal edges, covering the distal edges with end portions of the sheet material, and affixing a cover to the casing by simultaneously melting a portion of the cover and the sheet covered distal edges of the walls, and contacting the cover with the sheet material covering the distal edges of the walls. The method may also include melting a portion of the cover and/or the casing and placing the melted cover on the casing so that the melted portion contacts pleats of the sheet material, and permitting the melted material to cool and solidify and form a bond with the sheet material.

Abstract: An improved heat exchanger containing a hollow cylindrical pipe casing having a plurality of apertures formed on the surface. A lower elbow pipe is secured to a stove outlet pipe and to the hollow cylindrical pipe casing. The lower elbow pipe functions to receive hot air discharged from a stove. A plurality of receiving elbow pipes are positioned within the apertures that are formed in the hollow cylindrical pipe casing that function to receive cool air from an outside source. A plurality of inner U-shaped pipes are positioned within the hollow cylindrical pipe casing and are secured to a corresponding receiving elbow pipe. Each inner U-shaped pipes is positioned within one of the plurality of apertures that is formed in the hollow cylindrical pipe casing. A plurality of outlet pipes are also contained in the device and are secured to a one of the corresponding plurality of inner U-shaped pipes. Each outlet pipes functions to release warmed air into a room.

Abstract: A device for reclaiming waste heat from cooking appliances. The device includes a baffle through which exhaust from the cooking appliance flows, an inlet for receiving exhaust from the cooking appliance, and an outlet for venting exhaust to the atmosphere outside the building or vehicle in which the cooking appliance is located. The baffle extracts heat from the exhaust as the exhaust flows therethrough. The baffle is in thermal communication with a heat sink that directs the extracted heat to the building or vehicle spaces to be heated. The heat reclamation device has a generally thin profile so that the device may be installed above and behind the work surface of the cooking appliance so as to consume a minimal amount of space while not interfering with the normal use of the appliance. The heat reclamation device has means to vent the exhaust directly to the atmosphere, bypassing the baffle.

Abstract: A heat exchanger having a pair of header pipes and at least one of the header pipes including at least one dividing wall which extends in the longitudinal direction of the header pipe and divides the cavity of the header pipe into at least two chambers. A plurality of slots are longitudinally spaced along the header pipes. An inlet tube is connected to one of the header pipes. An outlet tube is also connected to one of the header pipes. A plurality of fluid tubes are disposed between the header pipes and each fluid tube has a plurality of partition walls for defining fluid paths in fluid communication with the header pipes through the slots. A plurality of corrugated fins are disposed between opposed surfaces of the fluid tubes. Thus, the heat-exchanging efficiency of the heat exchanger increases and, in addition, the heat exchanger is able to balance the amount of the heat-exchanging and the pressure loss.

Abstract: A gas-to-liquid heat exchanger formed by winding circular finned tubing into a helical coil has bare tubing wrapped around the coil such that it nests between adjacent turns of the finned tubing. Fittings at the inlets and outlets of both coils distribute the liquid stream so that a portion flows through each coil. The fan tube coil acts as a cooled baffle which directs the hot gas stream flowing over the finned tubes so that it contacts a greater portion of the finned tube external surface area at high velocity and increases the heat transfer effectiveness. Because the baffle is cooled, its temperature remains close to that of the finned tubing. This protects the baffle and eliminates differential expansion which could cause the baffle to fall off or loosen during operation.

Abstract: A blood warming device circulates air as a heating medium through a heater element and heat exchangers to transfer heat from the air to chilled blood being forced through the channels in a disposable warming jacket. A temperature sensor is disposed near an outlet of the blood warming jacket. An electronic control circuit operates on the signals produced by the temperature sensor to produce a cutoff signal that immediately stops the flow of heated air through the heat exchanger if the sensed blood temperature exceeds a predetermined level. The low heat capacity of the air is sufficiently low that no overheating of blood in the blood warming jacket occurs even if the blood flow is interrupted so that blood remains stationary in the blood warming jacket. The disposable warming jacket inclues a plurality of parallel blood paths, resulting in a high flow rate of heated blood. Blood output from one section of a warming jacket can be input to the inlet of another section to further raise the temperature thereof.

Abstract: A method and apparatus are disclosed for increasing the heat flow density of heat exchangers having at least one gaseous fluid flowing therethrough at a high velocity. In one form of the method, which may be used in motor vehicles, the energy for the acceleration of the gaseous fluid is taken from the exhaust gases of an internal combustion engine. In this respect, an exhaust gas heat exchanger used for vehicle interior heating, or a heat exchanger used for cooling the engine coolant, may be used. In order to increase the energy content of the exhaust gas, the exhaust gas undergoes a pressure build-up. The waste heat of the exhaust gas may thus be used at low engine loads, with a relatively low need for engine cooling and a relatively high need for interior heating, in order to increase the heat flow density at the exhaust gas heat exchanger for vehicle heating.

Abstract: A continuously cast strand is guided through a cooling chamber and brought into direct contact with a coolant evaporating partially. The coolant vapor is brought into heat exchange with a closed surface condenser arranged within the cooling chamber, and a flow-through medium of the surface condenser is brought into further heat exchange with a heat transformer arranged outside the cooling chamber and connected with the condenser.

Abstract: A liquid cooling system for thermally highly stressed parts of an industrial furnace consists of cooling channels, arranged essentially vertically and through which liquid flows and by-pass openings arranged at the upper end of the cooling channels for the direct passage of cooling liquid, by-passing the cooling channels. According to the dimensions of the by-pass openings, steam or gas bubbles are removed from the cooling system in a simple fashion and, at the same time, the cooling liquid which passes through the cooling channels and is heated is cooled by the cooling liquid flowing directly through the by-pass openings, before it again enters the next cooling channels. The by-pass opening(s) are formed by connecting tubes, or they are arranged in a cooling liquid distribution chamber, into which the cooling channels pass.

Abstract: An apparatus for reclaiming heat from the discharge gas from a combustion fuel heating unit, which has: inlet and outlet sections; an expansion section whose circumference gradually increases in the direction of flow, thereby providing an increased area for heat transfer; flow splitter plates which lie within and act in conjunction with the expansion section wall to form flow compartments, which flow splitter plates and expansion section wall have a slope, with respect to the centroidal axis of the flow compartment not exceeding 0.1228, which geometry prevents a separation of the flow from the enclosing walls, thereby increasing heat transfer and maintaining the drafting function; and a reduction section which converges the flow to the outlet section.

Abstract: As shown in an embodiment of the invention as depicted, the heat exchanger comprises a cylindrical chamber into which, and from which heated fluid, such as the combustion gas product from a furnace, is conducted. The chamber confines therewithin a plurality of axially-extending tubes, and ducting admits ambient air to and from the tubes. Accordingly, the heated fluid and the ambient air are indirectly heat-exchanged. The chamber is fixed within an enclosure or housing, except that an axially-extending portion of the chamber is left exposed, in order that the heated-fluid input and discharge can be effected directly to and from the chamber. The housing forms a compartment alongside of the chamber, and to a given side thereof, which compartment causes the ambient air to cycle or pump through the tubes and compartment, prior to any substantial air-discharge, to generate an improved draft or current flow in the heat exchanger.

Abstract: Heat exchange means for use in combination with flue means conducting heated gases from a combustion zone and for extraction of thermal energy from the heated gases. A casing means is provided defining an enclosure with a central axis, and having fresh air chambers at opposed ends of the casing, and with a heat exchange chamber disposed between the fresh air chambers. Heat exchange conduits couple the opposed fresh air chambers, with the heat exchange conduits extending through the heat exchange chamber about an annular zone spaced outwardly from the central axis. A pair of baffle plates are provided within the heat exchange chamber, with the plates being arranged at opposed ends of the chamber, and with one baffle plate being movable axially. The controllable positioning of the movable baffle plate defines the axial length of the heat exchange conduits exposed to heated flue gases moving through the heat exchange chamber.