Abstract: A slide guide 22 for a tube-type heat exchanger has a tubular geometry and comprises saddle 28 and slots 26 interposed one each between fingers 24. Saddle 28 positions slide guide 22 within tube support sheet port 30 while fingers 24 are biased so as to conform to the ovality of tube 12 and dissipate dynamic loads across a relatively large tube surface area.

Abstract: The invention relates to a cooler for hot smoke-laden gases which are to be cleaned by a pocket or tube filter situated in a downstream location. The cooler has a housing provided with cooling elements through which cold external air is conducted perpendicular to the direction of flow of the smoke-laden gas. The cooling elements are loose tubes of generally oval shape which project through perforations in two opposing walls of the cooler housing. Associated with each end of each cooling tube outside the cooler housing is an annular flange, which, by means of at least one spring presses an annular gasket situated between itself and the outer wall into the annular gap between the cooling tube and the perforation in the wall of the housing.

Abstract: A method of sealingly connecting a thermoplastic solar panel structure comprising a multiplicity of elongated thin wall sections defining a multiplicity of parallel passages extending longitudinally between the ends of said panel structure to a thermoplastic manifold tube comprising the steps of mounting an elongated mandrel having a multiplicity of transversely projecting elements corresponding in number and spacing to the panel passages to be communicated with the interior of the manifold tube, positioning a side wall portion of the manifold tube in predetermined spaced relation with the open end of the panel structure so that the projecting elements of the mandrel are generally longitudinally aligned with the open ends of a corresponding member of the passages in the panel structure, heating the spaced panel structure end and the manifold tube side wall portion to soften the thermoplastic material thereof, moving the mandrel within the manifold tube so as to position the projecting elements through the sid

Abstract: A heat exchanger element is provided with small-bore copper tubing jacketed with perfluoroalkoxy resin wherein the ends of the jacketed copper tubing are each telescoped over the end of a stainless steel nipple having a raised shoulder at its end and an annular groove adjacent thereto. A stainless steel ferrule surrounding a sleeve of polytetrafluoroethylene overlies the joint and for a short distance to either side and is contracted particularly in the region of said nipple groove to squeeze the copper tubing thereinto behind said shoulder. This interlocks the tube with the nipple and establishes a fluid-tight seal between the ferrule, the nipple and the metal tube. The nipples are joined to headers or manifolds by welding or in similar manner.

Abstract: A coaxial tube in tube heat exchanger has at least one fluid tight connection for holding the outer tube, inner tube and a terminal connector in assembled position, and a support insert fixedly disposed in the inner tube for operative alignment with the fluid tight connection to permit use of a relatively thin walled inner tube for said heat exchanger.

Abstract: The invention relates to a cooler for hot smoke-laden gases which are to be cleaned by a pocket or tube filter situated in a downstream location. The cooler has a housing provided with cooling elements through which cold external air is conducted perpendicular to the direction of flow of the smoke-laden gas. The cooling elements are loose tubes of generally oval shape which project through perforations in two opposing walls of the cooler housing. Associated with each end of each cooling tube outside the cooler housing is an annular flange, which, by means of at least one spring presses an annular gasket situated between itself and the outer wall into the annular gap between the cooling tube and the perforation in the wall of the housing.

Abstract: A high temperature tube and shell vertically positioned heat exchanger including a plurality of tube sheets dividing the interior of the shell into three consecutive chambers. Ceramic tubes are vertically hung from hemispherical seats in an upper tube sheet and extend downwardly through loose fitting porous inserts which line perforations in the lower tube sheets. A hot fluid flows from the bottom chamber upwardly through the ceramic tubes, a cool fluid flows through the upper chamber across the tubes, and a third fluid is injected into the intermediate chamber at a pressure higher than that of the fluid mediums in the upper and lower chambers. The third, high pressure fluid flows through the porous inserts and into the other chambers forming a dynamic seal which also allows unrestricted axial motion of the tubes and limited laterial motion of the bottom of the tubes.

Abstract: Disclosed herein is a solar panel assembly and method for fabrication of same including cutting away a portion of the rafters and roof sheeting to provide an orifice of suitable dimension within which a solar panel frame is to be disposed, providing a step portion on an upper inner periphery thereof, disposing a frame lower portion upon the step, installing conduits extending through the solar panel frame at upper and lower portions thereof in a substantially horizontal direction, interconnecting these conduits with a tubed collector plate, providing an insulative layer underneath this tubed plate, placing a transparent panel on top of the frame lower portion, and overlying the panel with a frame upper portion which connects the solar panel frame and the frame lower portion by suitable fasteners.

Abstract: A method of making and the resulting heat exchanger in which there is provided a header plate having a tube receiving opening closely embracing the tube in the opening with a sheet of solder on at least one of the tube and plate adjacent to the opening together with a retainer wettable by the molten solder attached to the tube and plate and bearing against the solder to retain it in position. The assembly of tube, plate, retainer and solder is heated to a melting temperature for the solder with the result that the molten solder flows over the wettable retainer and into the space between the plate and tube by capillary attraction after which the solder is cooled to a solidifying temperature to form a solder joint uniting the tube and header.

Abstract: A recuperator which includes vertically extending outer tubes and respective inner tubes within the outer tubes. Hot waste gases flow around the outside of the outer tubes. Air to be preheated flows through the inner tubes and annular passages between tubes. The outer tubes are formed of relatively short length sections of ceramic joined end-to-end. The lowermost sections rest on solid base blocks which support the weight of the outer tubes.

Abstract: A heat exchanger adapted for use as a hot water radiator for a car heater, or the like, in which a plurality of tubes and a plurality of fins secured thereon extend between two fluid tanks. The fluid tanks each comprise an inner and an outer tank element, both made of synthetic resin. The inner tank element is joined via gaskets with the end portions of the tubes extending therethrough, by means of tube-expansion working, while the outer tank element is united with the inner tank element along corresponding opposed peripheral edges thereof arranged in abutting relation. A pair of partition walls are provided in opposed relation between the inner and outer tank elements, which are joined together in an abutting manner directly or via part of the gasket, to provide a fluid tight partition between an inlet chamber and an outlet chamber defined by the partition walls and the tank elements.

Abstract: A means for supporting a heat exchanger formed of spaced apart headers with finned tubes extending therebetween, the headers being supported between parallel opposed structural members, the support means including brackets having horizontal portions on which each of the headers rests and clip affixed to the headers adjacent each bracket, each clip having a horizontal portion extending below and parallel the brackets, and stops adjacent the clips to limit the horizontal movement of the headers.

Abstract: The entry portions of the tubes of a Worrell-type emergency cooler are modified so that the peak temperature of said modified tube is maintained at less than about 650.degree. F., thereby allowing carbon steel to be employed for heat transfer tubes. Such entry portions feature tubular members (conveniently called ferrules) having controlled thermal conductivity significantly greater than conventional insulators, but significantly less than conventional thermal conductors.

Abstract: There is disclosed the manner in which a reflector for a solar energy collector is designed. The absorber is a right circular cylinder and is contained in an evacuated glass shroud. The glass shroud prevents the use of the reflector design technique of the prior art, and instead calculations are performed as if an absorber having a smaller diameter were to be used.

Abstract: The invention is directed to removable heat exchanger tube assemblies in heavy duty equipment radiators in which the tubes are each separately removable if they become defective in service. An inwardly facing annular ledge or abutment is molded into the inside diameter of each upper and lower sealing member to receive the respective ends of the tubes and prevent vertical movement of the tubes in service. A flange or shoulder is also provided on the lower portions of each tube and engages the inside of the lower sealing member to further restrain downward movement of the tubes in service. Each tube may be removed by pushing the tube upwardly to overcome the upper ledge abutment and thereby lift the tube free of the lower seal. Each tube may then be removed sidewise from the radiator. Variations of the removable sealing arrangement can be made and are described herein.

Abstract: To prevent the erosion caused by cavitation phenomena between a turbulence member and a tube of a tubular heat exchanger, as well as the corrosion by differential aeration in thin intervals between the tube of aluminum containing alloy and an elastomeric gasket, aluminum silicon platings are provided on the two walls of the tube.

Abstract: An apparatus for recovery of condensible vapors as components in waste gases which are to be flared, comprising a flare system, including a flare gas line leading to a flare stack. Inserted in the flare gas line is a gas-to-liquid heat exchanger, to cool the flare gases prior to passage to the stack. The cooling is to be selected temperature, where condensible vapors in the waste gases, the dew points of which are above the selected temperature, will condense. Means are provided for separating the condensed vapors from the remaining flare gases. Thermostatic means are provided for stopping the circulation of said cooling liquid whenever the ambient temperature drops below the selected temperature.

Abstract: In this panel-type radiator a pair of panels are disposed in adjacent, side-by-side relationship, and each is made of two thin dished sheets of steel. Adjacent sheets of the adjacent panels are each provided with a thin-walled embossment of generally truncated conical form having a central opening extending through its outer end. Each embossment also comprises a radially-extending flange surrounding the opening and an annular portion of rounded cross-section joining the flange and the generally conical portion of the embossment. The flanges are disposed in juxtaposition with the openings generally aligned, thus providing externally of the flanges a groove of generally V-shaped cross-section between the annular portions of the embossments. A deposit of silicon bronze forms a brazed joint between the embossments, and this deposit comprises an annular filet of silicon bronze disposed in the V-shaped groove and a film of silicon bronze between the juxtaposed flanges.

Abstract: The tubular cooled members have straight pipes, each accommodating an insert aligned axially therewith and having a cross-section diminishing in the direction of the coolant flow in the pipe interior. These straight pipes are coupled in pairs by a bent connecting pipe fitted with an insert abutting against those enclosed in said straight pipes. The abutted pipes have the same diameters but the junctions between said pipes are displaced relative to those between the inserts, the inserts also having the same diameters at the abutted sections.

Abstract: In apparatus for freeze drying of gas, particularly compressed air, with a gas to gas heat exchanger and a gas to refrigerant heat exchanger in a substantially vertical arrangement, the gas to be dried flowing successively through the gas to gas heat exchanger, the gas to refrigerant exchanger and then again through the gas to gas heat exchanger in a continuous circuit, at least the gas to gas heat exchanger has exchanger elements which consist of an outer pipe and an inner or core pipe located therein, and a metal sheet meander-shaped in cross-section is arranged in the space intermediate the inner surface of the outer pipe and the outer surface of the core pipe, and/or located in the core pipe, and is in heat contact with the surface or surfaces.

Abstract: A solar heat collecting apparatus which may realize improvements in workability in the manufacturing process, easier handling in transporation and installation, and lower manufacturing and handling costs, and which comprises an outer tube of transparent glass, a heat collecting tube disposed therein of which the inside is formed as a passage for a heating medium, and metallic end plates for hermetically closing the space between said heat collecting tube and each of the end open portions of said outer tube, one of said end plates provided with an exhaust tubulure.

Abstract: The present invention relates to a tube sheet comprising two parallel interspaced sheet members which are provided with aligned bores through which at least partly with interposition of sleeves, extend tubes or tube sections. The sleeves are provided with internal chambers which through openings in the sleeve wall communicate with the space between the sheet members. The tube plate according to the present invention is highly resistant to thermal shocks in that the internal chambers in the sleeves extend to beyond at least one of the sheet members, in particular the thermally heaviest loaded part.

Abstract: In a heat exchanger, ends of adjacent heat-conducting pipes are flattened to form joining faces and these faces are butt-welded together to form a parallel pipe heat exchanger without end plates.

Abstract: A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through the fins for defining a fluid circuit, the assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at the tube-to-tube joint wherein one of the tubes includes an end having an annular, outwardly extending shoulder followed by an inwardly tapered flared portion for receiving the outwardly tapered portion of the other portion and the other of the tubes including an end having an outwardly flared portion for receiving the outwardly tapered portion of the other tube end and an inwardly directed flange clinched over the shoulder of the other tube end to produce a solderless mechanical connection between the two tubes.

Abstract: A method of manufacturing an annular seal for a heat recuperator tube end is disclosed as comprising loosely wrapping without appreciable tension at least one layer of a compressible and resilient blanket of unbonded ceramic fibers about an annular forming mandrel, stabilizing the inner area of the fiber layer, thereafter compressing the fibers to decrease their volume while not destroying the recuperative ability of the fibers to resiliently expand back to a volume substantially greater than their compressed volume when the compression is released by wrapping a retainer exteriorly of the fibers to compress them and to temporarily retain them in compressed condition, the retainer being destructable at operating temperatures of the tube ends of the recuperator in which the seal is to be used. A specific wrapping process utilizing overlapping sheets of heat destructable wrapping material is disclosed.

Abstract: A solar heat collector panel comprising a flat spiral coil of pipe (preferably plastic) having an inlet at the inside and outlet at the outside, the inlet conduit extending out behind the coil. A plurality of approximately radial ribs is attached behind the coil to support the coil spaced from the surface on which it is installed to create a dead air space, prevent dry rot of the supporting surface, hold the coil level and stiffen the panel. A sheet of plastic material is caused to adhere to the back of the coil by adhesive and vacuum molding. The method of fabricating the panel is described in detail. This invention is an improvement on U.S. Pat. No. 4,014,314.

Abstract: The tank wall is provided with a cylindrical collar in which a perforated tube base is mounted; the base having a set of tubes passing through in gas-tight relation. A thin sheet metal membrane is secured peripherally on the tube base to form an enclosed gas-tight chamber through which the tubes pass. The membrane is also perforated to permit passage of the tubes in a gas-tight relationship. The enclosed chamber permits monitoring of the imperviousness of the connections between the tubes and the tube base.

Abstract: A heat exchanger includes banks of double-pipe elements connected to oval headers, the opposite ends of which are connected by round transition elements to main headers. Each oval header and the respective transition elements are formed from a single, integral member, initially a cylindrical pipe, without connecting welds. The outer ends of the transition elements are reduced to form nipple elements for attachment to the main headers. The nipple elements have a greater wall thickness than the transition elements.

Abstract: A compact yet efficient auxiliary transmission oil cooler of simple design and adapted to be installed within the engine coolant hose of a vehicle. The oil cooler consists of two basic parts. The first part is an outer tubular sleeve that serves as a housing and has opposite open ends adapted to be attached at its ends to a radiator hose for passage of coolant through the tube. The second part is the oil passage means to accomplish heat transfer to the coolant and it consists of a tubular member having a plurality of generally parallel runs or passes extending inside the coolant hose.

Abstract: A tube ferrule for a heat exchanger such for example as a condenser, a boiler, a refrigeration unit, or the like, having the shape of a longitudinally or axially split generally tubular or cylindrical ferrule having radially outwardly extending edge flanges adapted to be compressed and inserted so as to surround the portion of a tube occupying a circular opening in a support plate somewhat larger than the tube.

Abstract: A support assembly in a heat exchanger for securing tubes of a tube bundle in parallel, spaced-apart relation includes a plurality of concentrically arranged tube support rings for respectively securing circumferential groups of tubes in the tube bundle, each tube support ring being formed with inner and outer cylindrical support elements rigidly interconnected by a number of circumferentially spaced apart radial bars.

Abstract: In a heat exchange apparatus, a tube holding means for providing an improved tube joint between each tube end and its tubesheet in which each tube end is expanded to become an interference fit in one of the tube containing apertures of the tubesheet. The defining surface of each tube containing aperture includes novel metal collecting portions which act to prevent a linear extension of the tube and thereby reduce undesirable stress concentrations in the tube after expansion. The forming apparatus includes a tapered driving mandrel and a plurality of oppositely tapered rolls carried in a roll cage circumferentially around the mandrel for radial movement by the mandrel against the surface defining the tube containing aperture. In forming the tube holding means the metal collecting portions are roll formed and the defining surface of the tube containing aperture is worked to improve its bonding characteristics.

Abstract: Thin liners and tubes of special metals and alloys such as tantalum bonded to substrates or mounted in support plates of metallurgically dissimilar metals and alloys such as mild steel by an elastomer such as a silicone or fluoro elastomer. Also a shock absorbent mounting of tubes telescoped into heat exchanger tubes of special metals by elastomer cushions interposed between the tubes.

Abstract: An evacuated, double-walled, tubular housing contains a sheet metal fin which is biased against the inner tube. A metal tube carrying the fluid to be heated is placed in heat transfer relationship with the fin. A plurality of collectors can be placed in an array with the fluid carrying tubes the only connection.

Abstract: A device for sealingly connecting the end of a glass tube to the edge of a hole in a rigid plate including a resilient ring with a axial half-section in the shape of a flattened Z, said ring being made up of two cylindrical sleeves which partly enclose one another and are axially offset in relation to one another.

Abstract: A low cost, preformed, synthetic resin, indirect air cooled atmospheric heat exchanger especially adapted for use in water cooling towers is provided which exhibits enhanced water cooling properties notwithstanding fabrication thereof from relatively inexpensive, corrosion-free polyvinyl chloride or like materials heretofore thought to have insufficient heat conductivity for practical use in heat exchangers.

Abstract: Headering arrangement for heat exchanger including an array of flattened tube-like heat exchange channel elements wherein comb-shaped members extend into the end sections of the channel element array from opposite sides such that the corresponding teeth of the respective combs sealingly overlap one another and serve as spacers between adjacent channel elements. A header tank is leak-tightly secured to the periphery of the comb members, for introduction of fluid to or withdrawal of fluid from the stacked array.

Abstract: A tubular heat-exchange unit and method for its manufacture comprising a plurality of heat-exchange tubes disposed in the vertical and horizontal direction in a stacked, spaced-apart relationship, the end portions of said tubes being adheringly embedded at both ends thereof in a wall of a hardened, elastic material, said wall at both ends of said tubes separating an inner zone defined by the space around said tubes from the end zones which communicate with the space within said tubes.

Abstract: A fluid-fluid heat exchanger comprises a plurality of flexible synthetic tubes extending in a curved path between a pair of headers with the tubes being maintained in a plurality of spaced apart superimposed layers by a plurality of spaced apart generally radially disposed spacers.

Abstract: A condenser, connected to receive carbon dioxide and vapors from a liquid fermenting in a container, comprises reflux tubes with baffles in a unit cooled to about -50.degree. C, whereby the vapors condense, reflux and are collected in a funnel from where they flow down a tube dipping into the fermenting liquid. The purified carbon dioxide passes out through an exhaust pipe and may be solidified.

Abstract: There is provided a heat-exchanger system for heat-exchange between a gas such as air and a liquid such as water, comprising at least one heat exchanger unit which unit comprises at least one tube which is wound to form a hollow coil and which is arranged to conduct said liquid, characterized thereby, that said coil is closed or covered at one end; in that the other end of said coil which is open, is placed against a base plate having an opening which is aligned with the coil opening and has a size and shape corresponding to those of the coil opening; and in that the turns of the coil are slightly separated in order to permit the gas to flow perpendicularly across the tube during the passage through the wall of the coil.

Abstract: Replaceable inlet means for a fluid heat exchanger, particularly useful for a fluid containing an abrasive. A bulkhead is employed on the inlet side of the heat exchanger. A plurality of replaceable tubes are disposed within this bulkhead. The wear caused by the abrasive is confined to the replaceable tubes.

Abstract: A plurality of mutually parallel finned tubes forming a heat exchanger are positioned so closely together that the peripheries of mutually oppositely extending segments of the tube's respective fins are not substantially interspaced. To support the finned tubes, one or more groups of those segments are shortened to form transverse passages through which tube support members are passed transversely with respect to the tubes.

Abstract: There is disclosed a tube bundle wherein adjacent finned tubes of adjacent rows of tubes are arranged in triangular patterns and supported in fixed spaced relation to one another by rigid strips extending beneath each row and having arcuate surfaces on their upper and lower sides which are received in annular recesses formed in each tube of the rows above and beneath them, respectively.

Abstract: A flow divider for use in a direct expansion heat exchanger coil as typically utilized in an air conditioning system. The divider is adapted to receive an entering flow of refrigerant from a first circuit and equally distribute the flow into a plurality of leaving circuits. The geometry of the divider is arranged so that the force of gravity acting upon the working fluids passing therethrough is negated thereby enhancing the ability of the divider to produce an equal flow distribution in each of the leaving circuits.

Abstract: A solar energy collecting device comprising a hollow plastic panel as the heating element, said panel having opposite ends converged to provide tubular end portions each being inserted into and axially slidably supported by a tubular stud of a header. A pair of headers being provided at opposite ends of said hollow plastic panel.

Abstract: A heat exchanger is described wherein a tube bundle comprising a plurality of tubes having convolutions of different radii on a common axis is provided with at least one spacer structure for supporting the tubes in spaced relation. The spacer structure comprises a plurality of parallel bars arranged in pairs and in which semi-circular recesses are formed in abutting surfaces to accommodate the convolutions of the tubes. The bars in adjacent pairs have facing surfaces in an interfitting configuration with clearances therein sufficient to accommodate thermal expansion differences in the adjacent tubes.

Abstract: An apparatus for heating and/or cooling air has an upright housing through which at least two feed riser pipes and one condensate riser pipe pass. This housing has an outlet opening at its top and an inlet opening adjacent its base, this latter being provided with a hinged access door. A drip pan sealing the base of the housing drains into the condensate riser. A heat-exchanger assembly comprising a heat-exchanger coil, a trough below the coil which catches condensate and empties into the drip pan, valve for controlling liquid flow through the coil, a blower for forcing air through the coil, and thermostatic controls for operating the valves is hung in the housing between the openings. Releasable couplings connect the coil through shutoff valves to the riser pipes, and releasable electrical connectors interconnect these valves to the thermostat switch.

Abstract: A locking bar having feet which engage staggered finned-tubes of a heat exchanger to fix their positions in a support assembly formed from a plurality of support bars having interlocking arms.

Abstract: An automobile air conditioning evaporator of a given height modified by the use of a pair of plate members extending opposedly outwardly of each of the core pressure and vacuum chambers at one end thereof, each pair of plate members defining therebetween a shallow flow chamber communicating between their respective core chambers and, at outer end portions thereof, respectively with substantially parallel vacuum and pressure line connector conduits, thereby increasing the spacing between said conduits with minimum increase in evaporator core width to enable use as a replacement for evaporators of comparatively greater height.