Leakage Patents (Class 165/DIG8)
  • Patent number: 6029504
    Abstract: A tube loading apparatus and method for tensile strength and leak testing an elongated, hollow tube such as a steam generator heat transfer tube of a steam generator plant. The apparatus may be used to determine the axial or compressive load placed on a hollow tube.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: February 29, 2000
    Assignee: ABB Combustion Engineering Nuclear Power, Inc.
    Inventors: Philip Edward House, Alan Brian Goulet
  • Patent number: 4531980
    Abstract: A corrosion resisting copper alloy, especially suitable for use in fabricating heat exchangers, comprises 25 to 38% by weight zinc, 0.005 to 0.04% by weight phosphorus, the remainder of the alloy being copper, the alloy having a recrystallized grain size within the range of 2.mu. to 10.mu..
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: July 30, 1985
    Assignee: Granges Metallverken AB
    Inventors: Tatsuo Miura, Kazuhiro Ohta, Yoshiharu Hasegawa, Takao Yoneyama
  • Patent number: 4528733
    Abstract: A method of mechanically joining tubes to headers in tubular heat exchangers of a high density, high performance type. The headers are made of a heat recoverable metallic material and worked while in a martensitic state to be subsequently shrunk upon installed tubes. Procedural steps are carried out with particular regard to a header construction characterized by a multiplicity of closely spaced apart tube accommodating holes separated by relatively narrow ligaments in which working stresses are to be absorbed.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: July 16, 1985
    Assignee: United Aircraft Products, Inc.
    Inventor: Thomas J. Lord
  • Patent number: 4526112
    Abstract: Exhaust gas treatment method and apparatus extract heat from an exhaust gas by operating in a water-condensing mode which allows more heat to be recovered, removes particulate matter and condensed acid from the exhaust gas, and washes heat exchange surfaces to keep them clean and wet to improve heat transfer. Systems for heating water, air, and both water and air are disclosed. Methods of constructing and assembling improved heat exchangers are disclosed.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: July 2, 1985
    Assignee: Heat Exchanger Industries, Inc.
    Inventor: Donald F. Warner
  • Patent number: 4524725
    Abstract: A novel heat exchanger for recuperating heat from a combustion gas stream is disclosed. The heat is recuperated in a steam generator formed from a shell and tube heat exchanger. To reduce deposits on the combustion gas side of the heat exchanger the tube walls are porous so that the pressure across the tube walls during steam generation will continuously drive a small amount of water or steam from the liquid side to the smoke side to remove deposits on the tubes.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: June 25, 1985
    Inventor: Paul J. Cheng
  • Patent number: 4513814
    Abstract: A heat exchanger particularly for cooling of hot smoke gases with aggresive components by clean gas to be heated, has side walls having two spaced ends, bottom walls arranged at the ends of the side walls, a plurality of glass pipes extending substantially parallel to each other and to the side walls and arranged so that a smoke gas passes through the glass pipes, while a clean gas passes transversely to the latter, and flow passages extending along the side walls in direction of glass pipes and arranged for guiding the smoke gas.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: April 30, 1985
    Assignee: Langbein & Engelbracht GmbH & Co. KG
    Inventor: Dieter Wallstein
  • Patent number: 4512393
    Abstract: A heat exchange apparatus includes a core mounted within a casing and two fans arranged to draw air from the exterior of a building through the core in a first path and to draw air from the interior of the building through the core in a second path. The core is made up from a plurality of tubular cells each formed from a single folded sheet of aluminum and having a slot shaped cross-section. The short sides of the slot are arranged to face the inlet of cold exterior air so that it impinges upon the outer surface of the short side. The fan drawing the warm air is arranged to direct air onto the other surface of the short side so that the short side and the surrounding portions of the long sides act as an effective heat exchange surface free from the seam of the tubular core which is arranged adjacent opposite the short side. A differentially perforated baffle plate spreads the cold air over core such that more cold air is directed to the warm end of the core.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: April 23, 1985
    Assignee: Baker Colony Farms Ltd.
    Inventor: Jonathan P. Maendel
  • Patent number: 4512392
    Abstract: A heat exchange apparatus comprises a plastics outer casing for mounting in the exterior wall of a building such that it extends outwardly of the building wall to define an inlet and an outlet spaced from the wall. A heat exchange block is mounted within the outer casing and defines two paths of air therethrough mutually at right angles and both inclined to the horizontal. The block is formed of a plurality of polypropylene extruded sheets (preferably Coroplast) which comprises two thin sheets supported by a plurality of cells passing along the sheets. The Coroplast sheets are separated by spaces to form elongated air channels. The block is supported within the outer casing on resilient mountings and is arranged such that the air exhausted from the building passes through the elongated channels. A fan drawing air into the building from the exterior through the heat exchange block includes a nozzle for directing the air into the building away from the outlet.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: April 23, 1985
    Inventors: Dirk van Ee, Larry J. Benning
  • Patent number: 4505232
    Abstract: A boiler tube having a double-tube structure constituted by an inner tube and an outer tube integrated with each other. The inner tube is made of an alloy consisting essentially of, by weight, 0.02 to 0.15% of C, 0.5 to 3.5% of Si, not greater than 2% of Mn, 25 to 40% of Ni, 20.5 to 27% of Cr, 0.5 to 3% of Mo, not greater than 1% of Nb and the balance Fe and having a substantially fully austenite structure. The outer tube is made of an alloy consisting essentially of, by weight, 0.02 to 0.2% of C, not greater than 3.5% of Si, not greater than 2% of Mn, 33 to 45% of Ni, 30 to 40% of Cr and the balance Fe and having a substantially fully austenite structure. The inner tube made of the alloy having the composition specified above exhibits a high resistance to steam oxidation without any reduction in high-temperature strength even at elevated steam temperature, while the outer tube made of the alloy having the composition specified above exhibits a superior resistance to corrosion by coal combustion gas.
    Type: Grant
    Filed: March 27, 1984
    Date of Patent: March 19, 1985
    Assignees: Hitachi, Ltd., Babcock-Hitachi Kabushiki Kaisha
    Inventors: Kenichi Usami, Seishin Kirihara, Hiroyuki Doi, Choichi Asano, Masayuki Sukekawa, Yasuhide Sakaguchi
  • Patent number: 4496621
    Abstract: Disclosed are graphite articles impregnated with resin and having on at least a part of their surface a reinforcement of resin-impregnated fibers wherein the resin serves to integrally unite the graphite with the reinforcement. The articles are made by placing the reinforcement on at least a part of the graphite article, impregnating the resulting assembly with a heat-hardenable or thermoplastic resin and allowing the resin to harden.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: January 29, 1985
    Assignee: Le Carbone-Lorraine
    Inventors: Jean-Marie Hubert, Jean-Michel Bauer, Serge Mollet
  • Patent number: 4492267
    Abstract: In a heat exchanger or radiator for an engine-cooling circuit, a device forming a water box and an expansion chamber which are made in a single piece by moulding, but which are formed as separate containers that do not share a common partition, although they may be held together by a thin strip of material (27). The containers are of cylindrical or semi-cylindrical shape for strength.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: January 8, 1985
    Assignee: Valeo
    Inventor: Patrick Cadars
  • Patent number: 4487139
    Abstract: Exhaust gas treatment method and apparatus extract heat from an exhaust gas by operating in a water-condensing mode which allows more heat to be recovered, removes particulate matter and condensed acid from the exhaust gas, and washes heat exchange surfaces to keep them clean and wet to improve heat transfer. Systems for heating water, air, and both water and air are disclosed. Methods of constructing and assembling improved heat exchangers are disclosed.
    Type: Grant
    Filed: August 10, 1982
    Date of Patent: December 11, 1984
    Assignee: Heat Exchanger Industries, Inc.
    Inventor: Donald F. Warner
  • Patent number: 4484624
    Abstract: The invention relates to an apparatus for the transfer of heat by means of hollow filaments which extend in the form of a helix and/or a spiral and are provided in more than two layers. The apparatus may be made up of a multilayer winding. The outer diameter of the hollow filaments is preferably 0.05-1 mm and the wall thickness is 5-20% of the outer diameter. The invention also relates to the use of this heat exchanger in various heating systems.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: November 27, 1984
    Assignee: Akzo nv
    Inventors: Jan Vleggaar, Karl Ostertag, Klaus Schneider
  • Patent number: 4479534
    Abstract: A concentric tube type recuperative heat exchanger that includes an outer transparent tube 22 and an inner metallic tube 24 connected to suitable headers 12 and 14. The outer tube 24 is closed at the bottom end and open at the top end in order that cool air may be directed down through the open ended inner tube and up through the annular space therebetween where it may accept radiant energy transmitted through transparent tube 22. A tubular heat shield 36 of apertured metal lying in the annular space between tubes absorbs radiant heat passing directly through transparent tube 22 and that which is reflected from inner tube 24. Shield 36 serves simultaneously as a means for increasing the turbulence of fluid flowing through the annular space between tubes and as a heat sink that absorbs heat radiated between tube walls.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: October 30, 1984
    Assignee: The Air Preheater Company, Inc.
    Inventor: Robin B. Rhodes
  • Patent number: 4478276
    Abstract: A step-type heat-exchanger particularly useful for low temperature applications comprises a housing including a thermally-conductive member partitioning its interior into first and second chambers, and a sintered spongy layer of fine thermally-conductive particles bonded to each of the two opposite faces of the thermally-conductive member so as to be exposed for direct contact with a heat-exchange fluid when introduced into each of the two chambers. Also described are a method and apparatus for making the heat-exchanger, in which method and apparatus aluminum pressure plates are applied under heat and pressure to sinter the thermally-conductive particles to form the sintered spongy layers bonded to the opposite faces of the thermally-conductive member.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: October 23, 1984
    Inventors: Ralph L. Rosenbaum, Ami S. Breuer
  • Patent number: 4452300
    Abstract: Heat exchange between liquid (1) and air (2) is effected by causing the liquid (1) to flow, in the form of a liquid film (5) spreading under capillary action, between pairs (3) of vertically oriented band-shaped thin membranes (4a and 4b) held together by adhesive forces in the liquid film (5). The air flow (2) preferably is conducted in counterflow with the liquid flow (1) in gaps (6) surrounding the pairs of membranes (3). Exchange of heat between liquid and air occurs through the membrane walls (4a, 4b). The membranes (4a and 4b) preferably consist of a thin plastic film, for example matted polyester film.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: June 5, 1984
    Inventor: Sten O. Zeilon
  • Patent number: 4450902
    Abstract: A heat exchange comprises a battery of rectilinear tubes of synthetic plastic material connected at their respective ends to headers. At least one of the headers is fixed to the wall of the tower and the remainder of the exchanger is mounted by suspension members to allow free expansion of the tubes of the battery.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: May 29, 1984
    Assignee: Hamon-Sobelco, S.A.
    Inventor: Jacques G. P. E. Bosne
  • Patent number: 4437217
    Abstract: The heat exchange tube has a porous thermal shock resistant outer shell composed of a corrosion resistant ceramic material that may have a finned outer surface or a plain cylindrical outer surface. The outer shell contains an inner tube composed of a dense nonporous ceramic which is capable of containing high pressure gases, but which may not be as thermally shock resistant or corrosion resistant as the outer shell. The inner tube is formed of a dense ceramic material such as a highly dense silicon carbide or silicon nitride having at each end a like density insert. The end inserts provide sealing surfaces to contact other components in the heat exchanger such as identical ceramic tube assemblies to form a gas-type pressure seal. The inner tube can be fabricated by a deposition technique suh as a chemical or physical vapor deposition, and alternatively, can be made separately and press fitted into the outer shell or the outer shell can be cast or otherwise formed around the inner tube.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: March 20, 1984
    Assignee: Hague International
    Inventors: Paul G. Lallaye, John W. Bjerklie, Robert A. Penty
  • Patent number: 4432408
    Abstract: Method of and apparatus for exchanging heat between two fluids wherein a core member is composed essentially of vermicular expanded graphite which has been compressed primarily along one axis and heat is exchanged in the core member between the two fluids along an axis normal to the primary axis of compression of the core member.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: February 21, 1984
    Assignee: The Dow Chemical Co.
    Inventor: Ronald S. Caines
  • Patent number: 4412869
    Abstract: A method of producing aluminum tube product suitable for use in heat exchangers is disclosed. The product is characterized by a substantially uniform distribution of relatively fine, generally equiaxed constituents comprised mainly of elemental silicon. The method comprises the steps of providing in billet form a body of aluminum base alloy consisting essentially of 2 to 13 wt. % Si, 0 to 4 wt. % Zn, at least 0.005 wt. % Sr, up to 1 wt. % Fe and up to 1 wt. % Cu, the balance essentially aluminum and incidental impurities and extruding said billet to a final product or after extruding the billet to a thick wall tube, drawing to a final product for use as tubes in a heat exchanger assembly.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: November 1, 1983
    Assignee: Aluminum Company of America
    Inventors: William D. Vernam, Ralph W. Rogers, Jr., Harry C. Stumpf
  • Patent number: 4401157
    Abstract: A connecting device for assembling a collector traversed by the tubes of a tube bundle in a heat exchanger with the housing for the liquid flowing in the tubes, comprising an elastomeric sheet on the collector face opposite to the housing, wherein said elastomeric sheet comprises a marginal bulging portion projecting inwardly of the housing and cooperating with the edge of a trough located in said housing so as to delimit a collecting chamber and an expansion chamber.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: August 30, 1983
    Assignee: Valeo
    Inventor: Patrick Cadars
  • Patent number: 4359181
    Abstract: An improved method of making a cross-flow heat exchange surface of modified perforated or expanded metal is described. One form comprises multiple layers of the metal, stacked and laminated together by brazing. Advance in the state-of-the-art is the novel manufacturing process designed to optimize heat transfer at reduced manufacturing cost. Prior knowledge on manufacture of porous metal laminates has principally involved the weaving, layering, and bonding of wire meshes. This process obviates the need for weaving and results in a more rigid, open, low-fouling structure suitable to withstand the rigors of vigorous cleaning. The unique characteristic of this exchanger lies in the design of the lamina. A lamina comprises two expanded metal areas with a section of solid metal between. The purpose of the solid section is to provide a thermal conduction path between the two open sections. It also serves as a partition to separate the two gas streams.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: November 16, 1982
    Inventor: John Chisholm
  • Patent number: 4355684
    Abstract: Method of and apparatus for exchanging heat between two fluids wherein a core member is composed essentially of vermicular expanded graphite which has been compressed primarily along one axis and heat is exchanged in the core member between the two fluids along an axis normal to the primary axis of compression of the core member.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: October 26, 1982
    Assignee: The Dow Chemical Company
    Inventor: Ronald S. Caines
  • Patent number: 4333522
    Abstract: The invention provides a protective casing for a cube-shaped modular ceramic heat exchanger core, in which the core can easily be installed without danger of leakage between the fluid paths of the core. To this end the core rests in the casing with the edges of one face engaged with a suitable ceramic fibre composition gasket; the opposite face of the same flow path is engaged by another such gasket and the gasket is in turn engaged by a gasket compression member. The compression member is urged into this engagement by strong springs which thereby hold the gaskets in the necessary sealing engagement. In one aspect of the invention the casing is readily changed to provide single or multi-pass of one of the flow paths through the core; such a casing consists of a central portion of the thickness dimension of the core and replaceable end portions which provide the inlet, outlet and respective plenums.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: June 8, 1982
    Inventor: Heinz Brune
  • Patent number: 4332295
    Abstract: The heat exchange tube has a porous thermal shock resistant outer shell composed of a corrosion resistant ceramic material that may have a finned outer surface or a plain cylindrical outer surface. The outer shell contains an inner tube composed of a dense nonporous ceramic which is capable of containing high pressure gases, but which may not be as thermally shock resistant or corrosion resistant as the outer shell. The inner tube is formed of a dense ceramic material such as a highly dense silicon carbide or silicon nitride having at each end a like density insert. The end inserts provide sealing surfaces to contact other components in the heat exchanger such as identical ceramic tube assemblies to form a gas-type pressure seal. The inner tube can be fabricated by a deposition technique such as a chemical or physical vapor deposition, and alternatively, can be made separately and press fitted into the outer shell or the outer shell can be cast or otherwise formed around the inner tube.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: June 1, 1982
    Assignee: Hague International
    Inventors: Paul G. LaHaye, John W. Bjerklie, Robert A. Penty
  • Patent number: 4323115
    Abstract: A heat exchanger having a plurality of spaced apart tubes, a shell around the tubes; a pair of spaced apart molded in place tube sheets of solid polymeric material bonded to the tubes and to the shell interior surface and providing the primary support for the tubes, a conduit to deliver a heat exchange fluid around the tubes inside of the shell between the tube sheets; and a conduit to deliver a liquid feed stream into a feed box partially defined by one of the tube sheets.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: April 6, 1982
    Assignee: Chicago Bridge & Iron Company
    Inventors: Donald C. Stafford, Vincent F. Allo
  • Patent number: 4303125
    Abstract: A structural heat-exchange element has a structural part including a body portion of ceramic foam material and outer wall portions spaced from one another in a first direction so as to laterally outwardly bound the body portion and having a higher thermal conductivity than the latter, and conduit elements for passing a heat-carrying medium through the structural part and formed by a plurality of passages extending in the structural part in a second direction transverse to the first direction and each having at least an outer wall which is formed by the outer wall portion constituted of the material having a higher thermal conductivity.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: December 1, 1981
    Inventor: Karl H. Vahlbrauk
  • Patent number: 4300539
    Abstract: A solar collector panel is made from glass fiber reinforced concrete using a dissolvable core of polymer foam to form the internal passageways. The core is dissolved in a solution of solvent and polymer which impregnates and coats the concrete surfaces of the passageways to seal the passageways and to isolate the concrete from the heat transfer fluid.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: November 17, 1981
    Assignee: Ecosol Materials, Inc.
    Inventor: Michael J. Dobson
  • Patent number: 4299715
    Abstract: A heat conductive material in solid form which is readily excoriated whereby it can be applied by rubbing on the surface to which it is to be applied is formed, in the preferred form, by mixing finely divided heat conducting solids in a waxy material. That material is formed of waxes, or certain fats, and is solid in the range of normal room temperatures. In preferred form it becomes molten at temperatures in that range just above normal room temperature at which heat generating electronic semi-conductor devices often operate.The mixture is applied at normal room temperature by rubbing, or at elevated temperature by painting. It is applied to the surfaces to be mated and across which heat is to be conducted whereupon the surfaces are mated with the coating between them.
    Type: Grant
    Filed: April 14, 1978
    Date of Patent: November 10, 1981
    Inventors: Fred J. Whitfield, Arthur T. Doyel, Jr.
  • Patent number: 4294078
    Abstract: While many materials and additives which will melt and freeze at various temperature levels for storing and releasing large amounts of heat thereby per unit volume have been disclosed, the packaging of these materials with suitable non-corrodible long-lasting heat exchange structures has been cumbersome and expensive. The present invention provides an inexpensive, high performance, non-corrodible thermal storage method and system adapted for use with heat storage materials of various compositions and adapted for use over a wide range of temperatures, including a heat exchanger which provides for phase change to occur approximately simultaneously throughout the volume of the entire storage mass and provides for the sites at which the phase change is occurring to be approximately uniformly distributed throughout the volume of the heat storage material. Problems of thermal expansion, stratification and sub-cooling are eliminated.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: October 13, 1981
    Assignee: Calmac Manufacturing Corporation
    Inventor: Calvin D. MacCracken
  • Patent number: 4268558
    Abstract: A thermal storage structure and process for making the same comprising a base material of a substantially open cell structure, with the pores interconnected and open to the surface. The open cell structure may be a volcanic rock or alternatively may be a synthetically made structure such as foamed glass, foamed concrete or foamed metal. The open cell material is completely saturated with a latent heat storage component such as a salt-hydrate or eutectic salts. In the process of making the latent heat storage structure, the latent heat storage component is melted in a container and the open cell structure is placed therein, whereupon the melt is spontaneously imbibed by the structure, replacing the air in the open cell structure with the liquid latent heat storage component. The structure, after cooling, is packaged or encapsulated with a vapor impermeable material.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: May 19, 1981
    Assignee: Boardman Energy Systems, Inc.
    Inventor: Bryan J. Boardman
  • Patent number: 4266604
    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.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: May 12, 1981
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Seiji Sumikawa, Hiroshi Niizuma, Hiromichi Tonegawa, Tsuneo Torizuka, Yoichiro Furuya, Norio Takashima
  • Patent number: 4263966
    Abstract: The invention relates to heat-exchangers, especially of the type where the one medium is constituted by a gas or a vapor. It has a plurality of elongate elements which between themselves define the flow channels of the mediums. According to the invention, the elements comprise cores made of a material of high heat-conducting capacity. The cores are, at least partly, provided with a covering made of another material. The covering performs two functions; it keeps the cores fixed in their proper locations and they shield off the cores from direct contact with one of the two mediums. The covering may be metal or a synthetic resin.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: April 28, 1981
    Inventor: John D. B. Ostbo
  • Patent number: 4263967
    Abstract: A heat exchanger having a number of sheets retained in spaced relationship with one another by projections outstanding from the sheet surfaces. Some at least of the sheets are provided with return flanges and the arrangement is such that return flanges of a sheet lie contiguous with an adjacent sheet so as to define therewith a fluid flow passage. The flanges of the next adjacent sheet are angled with respect to those of the first to define a second passage which extends in a different direction. Two sets of passages are formed thereby and the sheets constitute heat transfer means between adjacent passages. Each set of passages forms a fluid flow conduit. The pack is formed without cementing or welding the sheets together.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: April 28, 1981
    Assignee: Hayes Timber Pty. Limited, et al.
    Inventors: John L. G. McNab, Malcolm R. W. Heath
  • Patent number: 4257481
    Abstract: A heat exchange element for solar heating is made of a solidified material such as concrete, cement, ceramic or resin bonded particulate material. Internal ducting is provided by embedded pipes or within the material itself. In the latter case a former is removed after the material is set, and this may be a rigid member, or one that can be dissolved or melted out. The element is preferably a laminated panel-like structure, possibly with fibre reinforcement.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: March 24, 1981
    Inventor: Michael J. Dobson
  • Patent number: 4256178
    Abstract: A heat exchanger and process for constructing the heat exchanger with the heat exchanger including a plurality of tubes which are to be traversed by two fluid media to be heat exchanged with each other with each tube having a tube end for the entrance of the respective fluid medium and a tube end for the exit of the respective fluid medium. The tubes are juxtaposed so that at each end of the heat exchanger, the tube ends of the tubes to be traversed by one fluid medium project in an axial direction beyond the other tube ends of the remaining tubes located at this end of the heat exchanger. The tube ends of the tubes to be traversed by one of the fluid media which project beyond the other tube ends of the remaining tubes are combined into a bundle at each end of the heat exchanger.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: March 17, 1981
    Assignee: Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
    Inventor: Gunter Fauvel
  • Patent number: 4246960
    Abstract: A multiple passage metal heat exchanger is disclosed which contains a metal barrier between sets of passageways. The barrier is cathodic to the metal of the heat exchanger and prevents intermixing of different heat transfer fluids due to corrosion.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: January 27, 1981
    Assignee: Olin Corporation
    Inventors: James M. Popplewell, Sheldon H. Butt
  • Patent number: 4235281
    Abstract: A condenser/evaporator heat exchanger comprising a plurality of vertically oriented panel units spaced moderately from one another. Each panel unit comprises a pair of thin film plastic sheets bonded to one another along a plurality of vertically extending bond lines transversely spaced from one another at regular intervals. The two sheets form between adjacent pairs of bond lines a plurality of vertical tubular condensing chambers adapted to receive pressurized steam. Brine is directed onto the outer surfaces of the panel units at the upper ends thereof, the brine descending down the outer surfaces of the panel units to be in heat exchange relationship with the steam inside the tubular condensing chambers.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: November 25, 1980
    Assignee: The Boeing Company
    Inventors: Robert E. Fitch, Clifford R. Perry
  • Patent number: 4224982
    Abstract: A tubular heat exchanger comprises tubes mounted between upper and lower plates employing a heat- and acid-sensitive resin at the upper plate. To prevent a fluid medium from corroding the resin, a further plate comprising an acid- and heat-resistant material is provided separating the medium from the resin, and a cooling medium is flowed through the separating space.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: September 30, 1980
    Inventor: Willi Frei
  • Patent number: 4222434
    Abstract: A heat-exchanger composed of a body of ceramic sponge defining randomly located interconnected walls bounding a plurality of randomly located interconnected cavities and a plurality of elongate heat-conductive members embedded in the body and having a surface in heat-exchanging relation with the body and an end zone at the surface of the body and another opposite end zone which is located depthwise in the body, so that, heat may be conducted between the interior of the body and the surface of the body along the heat-conductive members. The heat-conductive members may be of suitable material, such as silicon carbide or metallic glass. In another case a silicon carbide rod is attached to a ceramic plate so as to conduct heat directly from one side of the plate to the other. A method of increasing the efficiency of a tube heat exchanger with sponge baffles is described. A method of resistance heating of an auto catalytic converter is detailed.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: September 16, 1980
    Inventor: Robert A. Clyde
  • Patent number: 4221261
    Abstract: A tube and shell heat exchanger of a brazeless type. A single header construction mounts tubes made for high efficiency heat transfer and supported for damage free operation. A removable mounting plate confines a tube and header core in a shell and is adapted for free mounting and for controlled inflow and outflow of the tube side and shell side fluids. By-passing flow of shell side fluid within the shell is obviated by a recessed mounting of the header allowing a standard spacing of the tube bundle relatively to shell interior wall surfaces.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: September 9, 1980
    Assignee: United Aircraft Products, Inc.
    Inventors: John E. Wunder, George Hronek, Thomas J. Gaudion
  • Patent number: 4217954
    Abstract: A cooling plate for a furnace for use in metallurgical plants made of cast iron with steel tubes therein for carrying a cooling agent, wherein the tubes have a jacket of one or more layers on the outside thereof, the first layer being a carbide-stabilizing metal and the other layers being thermally resistant metal oxides or mixtures of metal oxides and alloys of metals. The tubes are resistant to carburization and provide improved heat transmitting properties.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: August 19, 1980
    Assignee: Gutehoffnungshutte Sterkrade Aktiengesellschaft
    Inventor: August Vincent
  • Patent number: 4213929
    Abstract: A solar collector panel is made from glass fiber reinforced concrete using a dissolvable core of polymer foam to form the internal passageways. The core is dissolved in a solution of solvent and polymer which impregnates and coats the concrete surfaces of the passageways to seal the passageways and to isolate the concrete from the heat transfer fluid.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: July 22, 1980
    Inventor: Michael J. Dobson
  • Patent number: 4209059
    Abstract: A triclad composite aluminum article having increased resistance to crevice corrosion in aqueous environments is disclosed in which a brazing composite having an aluminum core clad on one side with an aluminum brazing alloy is provided on the other side with a sacrificial clad consisting essentially of from 0 to 0.1% magnesium, 0.8 to 1.2% manganese, 0 to 0.1% chromium, 0 to 0.05% silicon, 0 to 0.05% copper, 0.1 to 0.4% zinc, 0 to 0.1% titanium, 0 to 0.1% iron, balance essentially aluminum.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: June 24, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: William H. Anthony, James M. Popplewell
  • Patent number: 4191240
    Abstract: A motor-containing device, particularly a submersible pump of the type including a sealed housing and motor mounted within the housing, includes a heat conducting filler material disposed in the gap between the motor and internal surface of the housing walls to improve the transfer of motor-generated heat from the motor to the housing walls. The filler material is such that it can be disposed in the gap in an initial form or state without concern for matching the exact dimensions of the gap and subsequently transformed while in the gap to provide a layer that fills the gap and provides a path for heat conduction to the housing walls. In one form, the filler material comprises a high memory thermoplastic that is mechanically prestretched into relatively thin sheet form, added to the gap during assembly of the pump, and then expanded in the gap by the application of heat thereto. In another form, the filler material comprises a thermoplastic material exhibiting high thermal expansion.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: March 4, 1980
    Inventors: Clinton Rule, Peter A. Rubel
  • Patent number: 4190101
    Abstract: Improved tube bundle-type heat exchanger comprising at least one tube base cast from a plastic material, such as poly laurin lactam, with a tube bundle cast in the tube base. Several optional features are also disclosed.
    Type: Grant
    Filed: March 22, 1977
    Date of Patent: February 26, 1980
    Assignee: Swakopmund AG
    Inventor: Werner Hartmann
  • Patent number: 4182412
    Abstract: The invention relates to finned heat transfer tubes and to a method for impoving the heat transfer properties in boiling liquids of such tubes by plating the tubes in an electroplating bath containing conductive particles such as graphite powder to produce a porous plated surface. The tips of the fins are covered before plating with a non-conductive coating to prevent plating of the tips. The non-conductive coating can be dissolved away or mechanically removed after plating.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: January 8, 1980
    Assignee: UOP Inc.
    Inventor: Ming S. Shum
  • Patent number: 4180973
    Abstract: The heat exchanger elements, arranged in a ring around a compressor, gas bine and combustion chamber that have a common axis of symmetry, are supported on a framework having elastic inserts for compensating for or accommodating to thermal stresses and are so connected to an inner and an outer casing portion that free spaces for each of the heat exchanging media (hot exhaust gas and compressed air) are provided inside the unit communicating with the heat exchanger elements. Ducts for the hot gases are surrounded by cooler gases provided in these free spaces to reduce thermal stresses. The casing portions themselves provide some of the duct walls, so that a compact and sturdy unit is provided.
    Type: Grant
    Filed: December 6, 1977
    Date of Patent: January 1, 1980
    Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
    Inventors: Siegfried Forster, Gunther Hewing, Manfred Kleeman
  • Patent number: 4178990
    Abstract: The invention relates to an improved aqueous solar energy collector system which includes a heat exchange panel wherein a getter having a surface layer in contact with the aqueous fluid which is characterized by a high affinity for corrosive metal ions in the aqueous fluid is provided upstream of the heat exchangers to thereby remove said corrosive ions from the aqueous fluid before it is introduced into the heat exchanger.
    Type: Grant
    Filed: November 15, 1977
    Date of Patent: December 18, 1979
    Assignee: Olin Corporation
    Inventor: James M. Popplewell
  • Patent number: RE31732
    Abstract: Hollow plastic filaments, useful in heat exchange systems, which are made from plastic compositions containing 5 to 45 percent by weight of filler particles having substantially higher thermal conductivity than the plastic and a diameter greater than 2.0 microns, will have high thermal conductivity and appreciable mechanical strength if the particles are chosen such that the ratio of the particle diameter to the wall thickness of the filament is between 0.001 and 0.5 and if the particles are dispersed within the plastic homogeneously enough to produce the desired mechanical stability and heterogeneously enough to take advantage of the high thermal conductivity of such a dispersion.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: November 13, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas A. Reilly, Charles F. Reitz, Robert D. Smith