Abstract: The invention relates to an apparatus for exchanging heat between a small volumetric flow liquid medium and a large volumetric gaseous medium and provides for a plurality of radially disposed and interconnected concentric annular flow channels for the gaseous medium and a plurality of pipes extending axially through said annular flow channels providing flow passages for the liquid medium, said annular flow channels being preferably formed by successive convolutions of a heat insulating web.

Abstract: A method and system for charging a container with a pressurized gaseous fuel. The gaseous fuel is transferred from a gas supply through a heat exchanger to a fueling dispenser. The gaseous fuel is cooled as a function of one or both of a fueling station pressure availability or a container pressure rating. This method and system ensure that a pressurized gas cylinder can be completely charged regardless of the ambient temperature.

Abstract: A shell-and-tube heat exchanger includes a shell, heat transfer tubes, tube plates, covers, inlet and outlet for fluid flowing into and out of the shell, and inlet and outlet for fluid flowing into and out of the tubes, wherein the heat transfer tubes are corrugated heat transfer tubes, the tubing wall of the corrugated heat transfer tube is configured along the longitudinal direction of the corrugated heat transfer tube in a shape formed by tangentially connecting the crests of large arcs and the valleys of small arcs, the outside diameter D of the corrugated heat transfer tube is set at 1.3 to 1.5 times the inside diameter d, the corrugated heat transfer tubes are arranged spirally around the axis of the shell in multi-layers, and spiral plates are inserted between two layers of the corrugated heat transfer tubes.

Abstract: A steam generator for a nuclear power station in which the flow of secondary fluid is deflected and distributed by a block articulated on a fixed horizontal pivoting spindle, such as to retain maintenance access to the tube place by tooling introduced through orifices in the outer casing, and to eliminate dead zones difficult to access for cleaning and servicing the tubes.

Abstract: Disclosed is a heat exchanger tube bundle design that eliminates the need for tube supports or baffles within a heat exchanger tube bundle. The inventive configuration uses a combination of bare tubes and longitudinally finned tubes positioned such that the longitudinal fins act as spacing and supporting means within the tube bundle. The longitudinal fins provide spacing and support substantially along the entire length of the tubes within the bundle and eliminate the need for internal spacing or supporting means. Taking advantage of this inventive design, one can economically construct a tube bundle requiring only external rings to secure the tube bundle.

Abstract: A heating or cooling vessel for heating or cooling a fluid as it flows through the vessel includes an outer tubular shell and an inner tubular member mounted to the outer tubular shell. The inner tubular member includes a central passage defining a first flow path, and a space between the inner tubular member and the outer shell defines a second flow path which communicates with the first flow path at one end of the inner tubular member. A seal member is provided toward the opposite end of the inner tubular member, for cutting off communication between the first flow path and the second flow path. An inlet provides cool fluid to the first flow path, and the fluid circulates through the first flow path and into the second flow path for discharge through an outlet in communication with the second flow path.

Abstract: The heat exchanger is made up of a shell having a coaxial tubular outer and inner wall with end plates attached thereto to enclose a tubular shell cavity provided with an inlet and outlet for a first fluid. Within the shell cavity is a spiral coil of tubing through which flows a second fluid. The coil is wound helically about the axis of the shell and sized to fit the inner and outer walls with limited radial clearance. The coils are axially spaced from one another to define a spiral flow path within the shell cavity for the fluids to first flow. The radial and axial clearance establish a spiral flow path and an axial flow path which are relatively sized to cause the first fluid to travel in a spiral motion, thereby enhancing heat transfer between the first and second fluids. Also, an enclosed central receiver, include communication with the shell cavity, may be formed within the inner tubular wall which serves as a fluid accumulator or reservoir.

Abstract: A self contained catalytic heating device within which a fuel/oxidizer mixture and combustion products are held out of physical contact with a heated medium, allowing the temperature of the catalytic material to be maintained at a level that is independent of the temperature at the surface in contact with the heated medium; materials and geometric dimensions can be chosen to achieve required temperatures for catalytically coated surfaces and heating surfaces, for example in a tubular construction.

Abstract: A tube-in-shell heat exchange apparatus is disclosed for passing two fluids in countercurrent linear heat exchange having a tubular shell, a pair of header caps closing opposite ends of the shell, a pair of tube plates positioned at the ends of the shell defining inlet and outlet headers with the header caps, the header caps having an inlet opening in one and an outlet opening in the other opening into the inlet and outlet headers, each tube plate having a plurality of spaced openings, a plurality of heat exchange tubes, one for each of tube plate opening, having opposite end portions reduced in diameter and increased in wall thickness and fitted and sealed in the tube plate openings, the tubes each having intermediate portions linearly corrugated or convoluted to provide equally spaced deep corrugations extending in a straight line parallel to the axis of the tubes and forming a plurality of linear flow passages, and the shell having an inlet opening at one end and an outlet opening at the other end inside t

Abstract: The heat exchanger is made up of a shell having a coaxial tubular outer and inner wall with end plates attached thereto to enclose a tubular shell cavity provided with an inlet and outlet for a first fluid. Within the shell cavity is a spiral coil of tubing through which flows a second fluid. The coil is wound helically about the axis of the shell and sized to fit the inner and outer walls with limited radial clearance. The coils are axially spaced from one another to define a spiral flow path within the shell cavity for the fluids to first flow. The radial and axial clearance establish a spiral flow path and an axial flow path which are relatively sized to cause the first fluid to travel in a spiral motion, thereby enhancing heat transfer between the first and second fluids.

Abstract: A heat exchanger has a shell, baffles, tube supporting means, and tubes, in addition to end caps for the shell, formed to furnish an intergral heat exchanger. The tubular shell and baffles are formed from a singular sheet of material. The tube supporting means includes the baffles, which have a plurality of openings formed therein to receive the tubes. The sheet is laser or die cut to form the integral baffles and outer tubular shell, and in a further embodiment, its closure end caps, for integrally forming the heat exchanger.

Abstract: A shell unit for use in a two pass shell and tube heat exchanger is provided. The shell unit has a return distributor means for providing direct fluid flow communication between the first pass of the two pass shell and tube heat exchanger and the second pass of the two pass shell and tube heat exchanger without excessive flow obstructions and associated pressure losses.

Abstract: A heat-exchange apparatus for separating a resin phase from a solvent solution containing a solvent, demetallized oil and resin which comprises: (a) at least one generally vertically positioned heat-exchange surface; (b) a means for directing the flow of the solvent solution in a downward direction over a portion of the heat-exchange surface thereby heating the solvent solution to precipitate a resin phase; (c) an outlet means to recover a solvent solution having a reduced concentration of resin which outlet means is located to essentially reverse the flow of the solvent solution having a reduced concentration of resin to a generally upward direction before exiting the heat-exchange apparatus; and (d) an outlet means to recover the resin phase from a lower portion of the heat-exchange apparatus.

Abstract: A plurality of baffles for adjacent finned tubes of a heat exchanger wherein a first fluid flows in the finned tubes and a second fluid of a different temperature flows past the finned tubes in heat transfer relationship therewith, include a baffle for each adjacent pair of finned tubes. A first flow path for second fluid extends in between baffles at one of the finned tubes, and a second flow path for second fluid extends in between baffles at an adjacent other of the finned tubes. The second flow path is larger between baffles at the other finned tube than the first flow path between baffles at the one finned tubes, and the second flow path is longer along baffles at the other finned tube than the first flow path along baffles at the one finned tube.

Abstract: In a tubular reactor (2) for catalytic chemical gas-phase reactions with symparallel [sic] guidance of the heat-exchanger, a partial stream of the heat-exchanger medium, this partial stream immediately neighboring the inlet side of the tube plate (6), is introduced through a by-pass channel (26) arranged in the center of the bank of tubes (4), by-passing the bank of tubes, and introduced at a point which is downstream to the discharge area of the heat-exchanger. In this way, undersirable severe local cooling in the reaction area of the bank of tubes (4) can be avoided.

Abstract: A conduit for carrying fluid in a downstream direction includes a diffusing section. Downstream extending convolutions in the wall of a diffusing section energize the boundary layer and delay boundary layer separation from the wall surface of the diffusing section or permit an increase in the diffusion angle without the occurrence of separation. Such convolutions are particularly useful when rapid diffusion is required in a short distance, such as in the diffusing section of automotive catalytic converter systems. Such a system carries engine exhaust products from a small, cylindrical pipe into a typically larger elliptical cross-section catalyst filled portion. The convolutions help to more uniformly disperse the exhaust gas throughout the catalyst bed using a relatively short diffusion section.

Abstract: A nuclear steam generator 10 with economizer 32 adjacent secondary side feedwater inlets 38a and 38b includes a secondary side divider plate 36 and handholes 40 at opposing 180.degree. locations in alignment with the ends of the plate 36. Notches 42 in the ends of the plate 36 adjacent the aligned handholes 40 facilitate inspection and maintenance access on the secondary side above tubesheet 22. To prevent bypass flow from one side of the divider plate 36 to the other, a novel flow blocker 50 of cylindrical shape is provided for mounting in handholes 40 and notches 42. The flow blocker 50 is defined by telescopically assembled member 52 and 62 which are biased in opposite directions by pre-loaded spring 64 therein to insure stability against vibration and flow induced loads. The flow blocker 50 fits sungly in notch 42 and handhole 40 and is bolted to the inside of closure plate 74 of handhole 40.

Abstract: A refrigeration evaporator comprising an enclosure having a closed top and bottom, enclosing a separator plate, lower baffle, and an upper baffle in the enclosure and spaced from one another to define a hot gas chamber, a refrigerant inlet area, a freezing chamber and a refrigerant outlet area. The evaporator is adapted to be connected to a refrigeration circuit having a freezing cycle and a harvest cycle wherein cold liquid refrigerant is directed into the freezing chamber during the freezing cycle, but prevented from entering the hot gas chamber; and hot gas is directed into the hot gas chamber and then into the freezing chamber during the harvest cycle. Water pipes extend vertically through the evaporator and through holes in the upper and lower baffles.

Abstract: A process for separating a resin phase from a solvent solution containing a solvent, demetallized oil and resin which process comprises: (a) directing the flow of the solvent solution in a downward direction over a portion of a generally vertically positioned heat-exchange surface thereby heating the solvent solution to precipitate a resin phase; (b) reversing the flow of the solvent solution having a reduced concentration of resin to a generally upward direction; (c) recovering the solvent solution having a reduced concentration of resin; and (d) recovering the resin phase produced in step (a).

Abstract: For selectively satisfying a basic cooling demand or a cooling demand which is an integral multiple of said basic cooling demand, the apparatus can be assembled from components selected from a plurality of sets of such components. For satisfying the basic cooling demand the apparatus comprises a single cooler-filter unit. One set of components consists of a plurality of said cooler-filter units. Another set of components consists of mounting blocks, which are to be mounted in a reservoir and adapted to communicate with cooler-filter units provided on the outside of a wall defining said reservoir. Another set consists of manifold blocks, each of which is adapted to be connected between the port members of cooler-filter units and a mounting block and to which each cooler-filter unit is hydraulically connected by means of a transverse supply passage section and a transverse return passage section.

Abstract: In a heat exchanger system wherein a primary conditioning fluid is reactive with a fluid to be conditioned, a leak safe arrangement of concentric tubes disposed across the conditioned fluid flow path having the reactive primary fluid in a central duct surrounded by inert fluid in an outer duct so that single failure leak of primary conditioning fluid or inert fluid presents no risk of harmful reaction with conditioned fluid. The heat exchanger system is used in an air collection and enrichment system in a hypersmic vehicle propulsion system.

Abstract: A heat exchanger with a sheaf of heat-exchanging pipes, with a chamber beyond each end of the sheaf, and with an ancillary-flow pipe extending approximately axially through the exchanger and parallel to the heat-exchanging pipes with its upstream and communicating with the entry chamber and its downstream and communicating with a mixing chamber by way of cylinder that has a larger cross-section than the ancillary-flow pipe. A structure for maintaining the medium flowing through the exchanger at a prescribed exit temperature is positioned at the downstream and of the ancilliary-flow pipe.

Abstract: A thin, convoluted wall member disposed upstream of the inlet of a diffuser generates large-scale vortices having axes in the downstream direction. The vortices enhance mixing within the diffuser and can also energize the boundary layer, thereby improving diffuser performance and delaying the onset of stall. Greater diffusion angles without stall are possible. The member itself creates low losses.

Abstract: Steam generators are used in pressurized water-cooled nuclear reactors for generating steam which issues from the generator through a large bore steam outlet. Heat-exchange tubes through which feed water flows are surrounded by hot cooling water from the reactor. The tubes must be capable of being inspected and repaired. To simplify inspection and repair, the tubes are U-shaped and each end of each tube is connected upwardly to a tube plate in the steam generator, whereby each end of each tube can be reached in a simple manner through an outgoing steam outlet.

Abstract: A baffle for a tubular structure of at least two pairs of spaced tubes comprises a first baffle sheet having two portions curved in accommodation of spaced tubes in one of the pairs, and a second baffle sheet having another two portions curved in accommodation of spaced tubes in the other of the pairs when said baffle is inserted in between these two pairs of spaced tubes. These first and second baffle sheets are structurally interconnected and biased away from each other for self-clamping retention between the two pairs of spaced tubes. The first and second baffle sheets preferably are spaced from each other for their clearing corresponding spaced tubes when they are moved toward each other against the above menbtioned bias for an insertion in between the pairs of spaced tubes.

Abstract: A swimming pool heating system includes in sealed tank, a refrigerant cooling coil system contained within the sealed tank and a water flow distribution manifold within the refrigerant cooling coil system. Cool swimming pool water is pumped through the water flow manifold such that is imparts a cyclical flow of water over the refrigerant cooling coil system. The warmth of the warmed refrigerant is imparted to the cool swimming pool water and the warmed swimming pool water then exits the water flow manifold and is returned to the swimming pool.

Abstract: An intermediate heat transport system is disclosed for providing steam generation from the secondary nonradioactive liquid sodium heat extraction loop from a sodium cooled nuclear reactor. The transport system includes a unitary module combining the steam generating heat exchanger, the pump for the circulation of the liquid sodium coolant, and the surge volume required for differential expansion between the sodium and the vessels that contain the sodium. Two concentric cylindrical and vertically standing vessels are provided for containing the liquid sodium; one vessel is outer and larger; the other inner vessel is of a double wall construction and open on its lower end hung from the top of the longer vessel. The outer and larger cylindrical vessel has four feedwater inlet plenums (typical number) at the bottom and four steam outlet plenums at the top. Tube sheets terminate each plenum to a tube bundle extending between the inlet and outlet plenums.

Abstract: A compact highly efficient heat exchanger is used to utilize waste heat from a motor vehicle engine cooling system to heat a source of water for use with a shower or the like in a recreational environment. The heat exchanger comprises a hollow cylinder having a cylindrical wall to define an annular space therebetween. Within the annular space is located a neatly fitting helical tubular coil with spaced helixes to define a helical pathway between adjacent coil helixes working fluid passes through the tubular coil and process fluid passes through the helical pathway to effect heat exchange between the working and process fluids.

Abstract: A heating device for fuel or other fluid, in particular to prevent solidification of paraffin constituents in diesel oil, comprises a housing (1) with an inlet (14) and an outlet (15) for the fuel, and a number of metal plates (3, 4) inside the housing. Tablets or heater elements (5) made of a ceramic material with a positive temperature coefficient (PTC) are fastened on the metal plates so that heat and electricity is conducted. To improve the heat transfer one or more turbulators (6; 6a, 6b) are placed between two of the above-mentioned metal plates, (3, 4) provided with PTC tablets. Passages (16, 17) are present to make the infed fuel flow from the inlet (14) over the first metal plate, through a turbulator and over the second metal plate to the outlet (15).

Abstract: A tube-within-a-tube, counter flow, air-to-air heat exchanger utilizing a rigid outer tube and a continuous, flexible inner tube. The corrugated, flexible inner tube is spiralled longitudinally around a center core and creates turbulence in the air which permits a rapid exchange of heat between the exhaust and fresh air streams.

Abstract: A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end of the tube sets and provides manifolding for directing multi-pass tube fluid flow through the tube sets. An opposite, floating end assembly slidably receives and seals floating tube ends to accommodate temperature induced expansion and contraction. The floating end assembly also provides manifolding for directing the multi-pass tube fluid flow through the tube sets. A triple wall tube set may be employed to provide extra protection against contamination of heat exchange fluids.

Abstract: Air to air heat exchanger structure and method including a helical heat exchange coil having a lower portion and an upper portion, refrigerant in the lower portion of the heat exchange coil, a first chamber surrounding the upper portion of the heat exchange coil, a second chamber surrounding the lower portion of the heat exchange coil, structure connecting the bottoms of the coil portions and the tops of the coil portions to each other, and motor and blower structure for passing warm air over the lower portion of the heat exchange coil to boil the refrigerant therein and for drawing cool air over the upper portion of the heat exchange coil to heat the cool air whereby the boiled refrigerant in the upper portion of the heat exchange coil is condensed and flows by gravity back to the lower portion of the heat exchange coil. The air to air heat exchange structure is adapted for utilization in a window opening to ventilate a dwelling space.

Abstract: The heat exchanger is made up of a shell having a coaxial tubular outer and inner wall with end plates attached thereto to enclose a tubular shell cavity provided with an inlet and outlet for a first fluid. Within the shell cavity is a spiral coil of tubing through which flows a second fluid. The coil is wound helically about the axis of the shell and sized to fit the inner and outer walls with limited radial clearance. The coils are axially spaced from one another to define a spiral flow path within the shell cavity for the fluids to first flow. The radial and axial clearance establish a spiral flow path and an axial flow path which are relatively sized to cause the first fluid to travel in a spiral motion, thereby enhancing heat transfer between the first and second fluids.

Abstract: A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end of the tube sets and provides manifolding for directing multi-pass tube fluid flow through the tube sets. An opposite, floating end assembly slidably receives and seals floating tube ends to accommodate temperature induced expansion and contraction. The floating end assembly also provides manifolding for directing the multi-pass tube fluid flow through the tube sets. A triple wall tube set may be employed to provide extra protection against contamination of heat exchange fluids.

Abstract: Gas/liquid heat exchanger with condensation.It is presented in the form of blocks juxtaposed (1) within an enclosure (2) and in which two series of channels (3,4) are pierced, these blocks (1) being disposed within an enclosure (2), the space between the enclosure (2) and the central column which the blocks form being separated into two chambers (6,7), connected respectively to the gaseous phase supply circuit (10) and the other to the circuit (14) for the evacuation of the condensates formed.

Abstract: The gas-conveying pipes (8) of a heat exchanger employed to cool cracked gas are surrounded by and communicate with outer pipes (9). The outer pipes are welded into pipe slabs (4 and 5) and not only a convey a coolant but also secure the pipe slabs (4 and 5), which can accordingly by thin.

Abstract: A proportion of the liquid metal flow passing through a fast reactor steam generator unit (SGU) is diverted past the outlet to a quiescent zone in the region of immersed tube-to-tubeplate welds at the water entry ends of the tubes, into which zone are given off any hydrogen bubbles which may result from a water leak into the liquid metal. The liquid metal in this zone is caused to flow through a weir system above which there is a gas space for collection of hydrogen, suitable means being provided for detection of hydrogen in this space. The hydrogen is entrained at the water inlet tube plate, the invention making use of the slow solution rate of hydrogen in sodium at lower temperatures prevailing in the quiescent zone at the water inlet end.

Abstract: An heat exchanger transfers the heat from engine oil passing through a plurality of tube members to engine coolant within a housing for cooling the engine oil. The tube members are arranged within the housing in groups with the tube members in each group being aligned radially to form a fan shaped core. The cores are arranged circularly, so that the effective surface of the tube members through which the heat of the engine oil therewithin transfers to the engine coolant outside of the tube members becomes maximized.

Abstract: A wort cooking or boiling arrangement, which operates with vapor concentration, including a wort cauldron or kettle and with two separate heating circuits which are located externally of the wort cauldron and which are formed by heat exchangers. One of the heat exchangers (live steam heat exchanger) is supplied with live stem for the heating of the worts, and the other heat exchanger (vapor heat exchanger) is supplied with concentrated vapors for the subsequent cooking or boiling of the worts. The two heat exchangers are located in each other within a common external cooker.

Abstract: A sub-cooler for a refrigeration system is located between the condenser and the expansion device for the evaporator. The sub-cooler has a sealed cylindrical housing with a main inlet coupled to the outlet of the condenser. This inlet is connected to a spray bar located along the length of the housing near its top, and spray apertures are distributed along the length of the spray bar to spray the refrigerant into the interior of the sub-cooler housing. The temperature controlled expansion valve supplies a tapped off portion of the refrigerant from the condenser to a distributor located within the housing. Three to six separate cooling coils, having multiple turns, extend from the distributor throughout the interior of the housing. The other ends of the cooling coils are coupled with a collector in the housing, and the outlet from the collector is injected into the main suction line coupled to the inlet of the compressor.

Abstract: The heat exchanger tube bundle fluid entry area is a region where particular problems can occur because pieces of metallic debris can collect and focus their mass at this low elevation. The metallic debris collected at the bottom of the annular downcomer passage can be swept into the tube bundle, wherein they will impact upon the tube bundle and can cause repture or large amounts of wear to the heat transfer tubes. To prevent this adverse condition, a circumferential row of cylindrical members are positioned peripherally about the entry portion of the tube bundle. These members will have an outside diameter, pitch, and geometric array corresponding to that of the heat tranfer tubes, so as to minimize pressure drop, due to flow across them.

Abstract: The tubes in a tube bundle which is laid out in an alternating array of tubes and empty lanes are supported by corrugated slats positioned in the empty lanes, separating adjacent rows of tubes, the corrugations of each of the slats extending along the length or circumference of the slat to support the tubes and generate turbulence.

Abstract: The present invention provides a heat exchanger using hollow fibers formed of an organic polymer as the heat transfer tubes; a blood oxygenating device comprising a blood oxygenator combined with the aforesaid heat exchanger; and a small-sized and lightweight blood oxygenator which comprises a blood oxygenator of the hollow-fiber membrane type having the aforesaid heat exchanger incorporated thereinto to form an integral unit, and hence has excellent gas exchange and heat exchange performance.

Abstract: Rod type supports or baffles are disclosed for arrays of tubes, especially those arranged in the form of a tube bundle. Each baffle comprises a pair of arcuate surfaces with a plurality of rods extending therebetween and each rod being non-normally disposed with respect to the axis of a tube bundle. In a preferred embodiment, a plurality of baffles are employed in a tube bundle so as to cause shell side fluid to sweep across the tubes in a spiral pattern, such as a double helical pattern. The invention provides an improvement in the mixing of shell side fluid in a rod baffle heat exchanger.

Abstract: The heat exchanger is constructed in various embodiments such that the crevice duct between the outermost coil of tubes and the jacket defining the crevice duct is maintained at a constant width during operation. In some embodiments, the outermost coil tubes is carried on the jacket to maintain a constant width of the crevice duct. In other embodiments, a separate set of cooling tubes in provided to maintain the jacket cool. In other embodiments, the amount of heat drawn off through the outermost coil of tubes is increased.

Abstract: This invention relates to shell and tube heat exchangers and similar equipment and is particularly concerned with an improved arrangement for sealing the longitudinal edges of the pass baffle with the inner wall of the shell in such a manner as to prevent fluid leaks through that juncture which have the effect of bypassing the heat exchanger. The invention also relates to an improved tube bundle design wherein an aligned notch or indentation is provided in each of the tube bundle cross baffles adjacent the longitudinal edges of the pass baffle to yield a measure of protection for the edge of the pass baffle when the bundle is removed from the shell for maintenance purposes and to an optimized tube bundle configuration which may be readily reversed or rotated to extend its service life.

Abstract: A heat exchanger comprises a cylinder and a bundle of heat exchange tubes passing through its interior heat exchange chamber for receiving a hot fluid to be cooled while circulating through the tubes from an inlet to an outlet end.

Abstract: In a steam generator, there is provided an annular foraminous or perforated flow distribution plate (100) which may be in the form of a single-piece annulus fixedly secured to the lower end of the heat exchange tube wrapper (146) for installation within new steam generator facilities, or alternatively, may comprise a plurality of arcuately-shaped segments (210) secured together by suitable bolt fasteners (226) for installation within existing steam generator facilities. The plate (100) is adapted to be wedgingly interposed between the lower end of the tube wrapper (146) and the upper surface (204) of the heat exchange tube bundle tubesheet (122), and the plate (100) has the configuration of a conical frustum for stability.

Abstract: A vibration and shock resistant finned tube counter-flow heat exchanger crising a rigid support member wound about the inner wall of the heat exchanger shell at the same pitch as the finned tube windings, and a radial bumper support, affixed to the unsupported end of the heat exchanger shell and providing a radial space between the concentric shells of the heat exchanger and an anterior insulating shell.

Abstract: A new approach to the theory of heat exchanger optimization is presented which shows the advantages of using low Reynolds and Nusselt numbers and low flow velocities along with a novel design, the microtube-strip (MTS) counterflow heat exchanger. The MTS exchanger in the preferred embodiment consists of a number of small modules connected in parallel. Each module typically contains eight rows of one hundred tubes, each of 0.8 mm outside diameter and 0.16 m length. The tubes are metallurgically bonded via the diffusion welding technique to rectangular header tube strips at each end. Caps suitable for manifolding are welded over the ends. Cages are provided to cause the shell-side fluid to flow in counterflow fashion over substantially all of the tube length, and suitable manifolds are provided to connect the modules in parallel. This design results in the highest power densities of any known design for single phase exchangers.