US3802499A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
US3802499A
US3802499A US00275880A US27588072A US3802499A US 3802499 A US3802499 A US 3802499A US 00275880 A US00275880 A US 00275880A US 27588072 A US27588072 A US 27588072A US 3802499 A US3802499 A US 3802499A
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US
United States
Prior art keywords
casing
tubing
pipe
fins
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00275880A
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English (en)
Inventor
G Garcea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fiat Auto SpA
Original Assignee
Alfa Romeo SpA
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Filing date
Publication date
Application filed by Alfa Romeo SpA filed Critical Alfa Romeo SpA
Application granted granted Critical
Publication of US3802499A publication Critical patent/US3802499A/en
Assigned to ALFA LANCIA S.P.A., A CORP. OF ITALY reassignment ALFA LANCIA S.P.A., A CORP. OF ITALY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ALFA ROMEO S.P.A.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/405—Extending in a longitudinal direction
    • Y10S165/407—Extending in a longitudinal direction internal casing or tube sleeve

Definitions

  • ABSTRACT A heat exchanger having an externally finned pipe in which a first heat exchanger fluid flows, with the fins
  • the object of this patent application is to achieve a heat exchanger using a pipe finned externally, with the direction of the fins being essentially perpendicular to the axis of the curve generated by the pipe, through which condition the velocity of the fluid A is activated in the above-mentioned spaces, and thus the thermal exchange is substantially improved as a result of this activation of the velocity.
  • the two opposing walls of the casing which adhere to the crest of the fins can be flat and essentially parallel; but, in order for fluid A to be guided between the spaces of the fins for a greater distance, it is well for the two opposing walls of the casing to adhere to the crest of the finning of the pipe for a discrete distance along the circumferential line of the crest of the finning; in this case, in the zone of contact with the crest of the finning, the surface of the casing assumes an essentially cylindrical form coaxial with the axis of the finned pipe.
  • a modification foreseen for the exchangers above-described can be advantageous; within thecasing which contains at least one finned pipe, there can be arranged suitable deviating baffles perpendicular to the axis of the pipe itself (possibly obtained by modifying only the form of the casing), placed above and below the pipe in the direction of flow of fluid A and conveniently staggered, so that fluid A is compelled to lap successively various zones axially adjacent to the finned pipe following an essential sinusoidal or better a zig-zag course.
  • the exchanger according to the invention has proved to be suitable in many installations, but particularly in motor-vehicles, in which it is necessary to effect a heat exchange between the lubricating oil and the cooling water of the motor, and where it can happen that spaces of particular form or dimensions are available in which it would be impossible to install a conventional exchanger which is too big and too heavy.
  • the exchanger according to the invention is composed of a pipe in which the first of said liquids flows and which is equipped with external finning lying in a plane essentially perpendicular to its axis, said piping having one of its sections contained within a casing whose wall is essentially adjacent to said finning at least at the point of two opposite generated lines of said piping, the space enclosed within said casing constituting the passage for the second of said liquids which moves within said casing principally in a direction at a right angle to said piping.
  • FIG. 1 is a view taken along line II of FIG. 2;
  • FIG. 2 is a view taken along line IIII of FIG. 1;
  • FIG. 3 shows a modified exchanger along line III--III of FIG. 4 in section along line IIIIII of FIG. 4;
  • FIG. 4 is a view taken along line IVIV of FIG. 3;
  • FIG. 5 is a view in section along line VV of FIG.
  • FIG. 6 shows an axial cross-section of an exchanger constructed with a finned pipe having it axis wound in spiral form
  • FIG. 7 is a partial view along line VIIVII of FIG. 6;
  • FIG. 8 is a part of an axial section of a variation of the exchanger of FIG. 6.
  • FIG. 9 is a part of an axial section of the exchanger of FIG. 6 further modified.
  • FIGS. 1 and 2 are indicated a finned pipe 10, with the direction of the fins being perpendicular to the axis of the pipe constructed in a single piece and, in this particular instance, shaped in the form of a U, a casing 11 contains the finned pipe, and 12 and 13 denote the smooth terminal parts of the pipe, outside the casing, to which are attached with seals the inlet and discharge pipes respectively of the cooling fluid B, and the pipes are not shown in the figures.
  • Indicated l4 and 15 are the two finned branches with a rectilinear axis inside the casing and 16 the connecting elbow between the two branches outside bottom wall 17 of the casing, and the elbow is also preferable smooth.
  • Casing 11 has one wall, indicated 18, which is movable, suitable for facilitating the cleaning operations, consisting of a flange joined in a conventional manner (not shown) to the corresponding counter-flange of the body of the casing using an in-between gasket 38.
  • the two branches l4 and 15 are welded to the wall 17 of the casing and conne cted with a gasket seal to flange 18 by means of rings 20 and 23 at the point of passage from the inside of the casing to the outside.
  • in wall 22 is machined a hole in which inlet pipe 21 is welded for the cooling of fluid A, and in wall 19 a hole in which is welded the outlet pipe for fluid A.
  • Arrows 25 and 26 indicate the direction of the flow of fluid B within the finned pipe 10
  • arrows 27 and 28 indicate the direction of movement of the fluid A within the casing 11 where it is effectively cooled since walls 29 and 30 of the casing adhere to the crests of the finned pipe, and the fluid is forced to pass predominantly within the spaces between the fins.
  • walls 29 and 30 of the casing 11 are formed in the zone of contact with the crests of the fins of the pipe 10 so as to assume an essentially cylindrical form coaxial with the axis of each of the two branches l4 and 15 with the advantage that, fluid A being guided be tween the spaces within the fins for a more extensive distance, a good heat exchange between fluid A and fluid B is achieved.
  • the exchanger shown in FIG. 3 is constructed with a pipe 32 consisting of a single finned section 37 inserted within a casing 39; finned pipe 32 has its end parts 33 and 34 smooth extending outside of walls 35 and 36 respectively of casing 39; seal rings 45 and 46 are located at the point of passage from the inside of the casing to the outside.
  • the inlet and discharge pipes of fluid B joined to ends 34 and 33 of the finned pipe are not shown, but arrows 41 and 40 indicate the direction of flow of fluid B within the finned pipe 32.
  • the walls of casing 39 are shaped in the zone of contact with the crests of the fins of the section 37, so as to assume an essentially cylindrical form coaxial with the axis of the finned section, and contain recesses 42 through which they adhere to the crests of the fins blending with the waved zones, but predominantly remain away from the crests of the fins so as to form the cavities indicated with 53.
  • FIGS. 4 and 5 which show two views of the exchanger, sectioned respectively along lines IV-IV and VV of FIG.3, clarify the detailed form of the casing.
  • This exchanger was achieved as a pipe having a single finned section, but naturally one could use, as in the previous constructions, a U-shaped pipe with deviating or diverging branches installed within the casing suitably baffled which could oblige the fluid to flow onto the finned surfaces of the pipes in a zig-zag course.
  • Exchangers based on the same structural concepts can be achieved with several finned branchesinstalled within the casing using either one pipe in the form of a coil or several pipes equipped with an inlet manifold and an outlet manifold for fluid B.
  • FIG. 6 54 indicates the finned pipe with the fins extending perpendicularly to the axis generated by the pipe itself, as is clearly shown in FIG. 7; 59 and indicate its ends which are smooth, and in this construction the pipe in its finned portion has its axis wound in 'a spiral in closed-coil fashion; 55 indicates a casing which contains a finned pipe, 56 the external cylindrical wall,
  • 61 and 62 indicate two end covers in which are machined holes 77 and 78 (with the respective recess for seal rings 87 and 88) for the passage of the smooth ends 59 and 60 of the finned pipe 54 from the inside of the casing 55 to the outside, and 79 and 80 indicate threaded holes in which are screwed, with previous placement of seal washers 83 and 84, inlet and outlet fittings 81 and 82 for the fluid A to be cooled. Fluid B flows within finned pipe 54 in the direction indicated by arrows 86 and 85.
  • covers 61 and 62 are further machined coaxial holes 63 and 64; 66 indicates a tie-rod, threaded at both ends, 67 and 68, inserted in holes 63 and 64 of the covers and in hole 65 of circular wall 58 with the interposing of two spacers 69 and 70, which tie-rod serves to secure the various components of the exchanger.
  • a nut 71 is screwed on threaded end 67 and nut 72 on threaded end 68 there having been inserted previously between the nuts and the'covers, washers 73 and 74 which assure a good seal at the points of the holes 63 and 64.
  • two rings of elastic material 75 and 76 are installed between the wall 56 and the covers 61 and 62.
  • Arrows 89 and 90 indicate the direction of flow of fluid A at the inlet and outlet of casing 55.
  • Fluid A which flows within the casing in the space contained between the two walls 56 and 57 in a direction parallel to the lines generated by the cylindrical walls is obliged to pass predominantly within the spaces between the fins and therefore to wash against the finned surfaces of the pipe becoming substantially cooled within a limited space.
  • FIGS. 8 and 9 the same numbers indicate the parts that are analogous to those of the exchanger of FIGS. 6 and 7; in the first embodiment, two elements 91 and 92 are visible shaped with a triangular cross-section with the sides of the triangle curved arranged with the axis wound in the form of a coil parallel to the axis of the finned pipe.
  • the abovementioned elements inserted in the spaces between the walls 56 and 57 of the casing and the crests of the fins of pipe 54, oblige fluid A to flow within the spaces of the fins, guiding it through a larger area, with a further improvement of the heat exchange, an advantage which is obtained also in the case of the exchanger shown in FIG.
  • 93 and 94 indicate the external and internal walls of the casing of finned pipe 54, which are cylindrical surfaces in the form of waves, with the course of the waves being spiral and parallel to the course of the axis of the coiled finned pipe.
  • a heat exchanger for heat exchange between two liquids, one of which liquids is viscous including a cylindrical casing having an inner surface, an inner cylindrical member of lesser diameter than the casing within the casing and having an outer surface, said casing being provided with an inlet and an outlet for the viscous liquid, a finned tubing within the casing, said tubing having inlet and outlet ends, the tubing having outer fins lying in a plane perpendicular to the axis of the tubing, said tubing being helically wound with closely adjacent turns to provide a cylindrical assembly, the other liquid flowing inside the tubing from the inlet to the outlet, and the turns of the tubing being at least partially but not completely enclosed between the inner surface of the casing and the outer surface of the cylindrical member so that the outer contours of the fins are adjacent said surfaces thereby compelling the viscous liquid to flow through the passages defined between the fins of the tubing, thus preventing stagnation zones from being formed and maintaining the heat exchange at the optimum level.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00275880A 1971-07-27 1972-07-27 Heat exchanger Expired - Lifetime US3802499A (en)

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Application Number Priority Date Filing Date Title
IT773971 1971-07-27

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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2719171A1 (de) * 1976-05-10 1977-12-01 Shiley Lab Inc Waermeaustausch-verfahren und -vorrichtung zum regulieren der temperatur von blut
US4138288A (en) * 1976-05-10 1979-02-06 Shiley Scientific Incorporated Method and apparatus for oxygenating and regulating the temperature of blood
US4138464A (en) * 1976-05-10 1979-02-06 Lewin John E Blood oxygenator with integral heat exchanger
DE2854244A1 (de) * 1977-12-23 1979-07-05 Shiley Scient Inc Verfahren und vorrichtung zum behandeln von blut mit sauerstoff und zum regulieren der temperatur von blut durch waermeaustausch
US4306614A (en) * 1978-04-05 1981-12-22 Brunswick Corporation Heat exchanger for marine propulsion engines
US4316501A (en) * 1977-09-26 1982-02-23 Solar Unlimited, Inc. Heat exchanger with leakage collector
US4317268A (en) * 1979-08-08 1982-03-02 Solar Limited, Inc. Process for making a heater exchanger
US4321963A (en) * 1979-07-05 1982-03-30 Solar Unlimited, Inc. Single layer volute heat exchanger
US4559999A (en) * 1983-04-08 1985-12-24 Shiley, Inc. Heat exchanger for extracorporeal circuit
US4585056A (en) * 1984-04-18 1986-04-29 Norton Company Heat exchanger
US4648355A (en) * 1985-11-18 1987-03-10 Martin Bekedam Heat exchanger array for a step down return of condensate
US4669533A (en) * 1984-02-01 1987-06-02 Karl Hehl Cooling and filtering unit for hydraulic drive fluid
US4872503A (en) * 1986-03-13 1989-10-10 Marriner Raymond E Air heat exchanger
US4878457A (en) * 1988-10-17 1989-11-07 Martin Bekedam Zero flash closed condensate boiler feedwater system
US4895203A (en) * 1985-03-22 1990-01-23 Harold L. Hayes Heat exchanger with helically coiled conduct in casing
US4957160A (en) * 1989-12-04 1990-09-18 Gas Research Institute Self-clamping baffle for tubular structures
US5048596A (en) * 1990-01-02 1991-09-17 Mccord Heat Transfer Corporation Oil cooler
US5522453A (en) * 1995-03-22 1996-06-04 Green; Kenneth E. Washer fluid heater
WO1996022498A1 (en) * 1995-01-17 1996-07-25 Thompson John G Heat recovery and storage device
US5682947A (en) * 1994-11-15 1997-11-04 Graham Corporation Housing assembly for a coil heat exchanger
US5845704A (en) * 1997-05-16 1998-12-08 Flowserve Management Company Heat exchanger baffle design
US6076597A (en) * 1997-12-31 2000-06-20 Flowserve Management Company Helical coil heat exchanger with removable end plates
WO2002001125A1 (en) * 2000-06-28 2002-01-03 Igc Polycold Systems, Inc. Liquid chiller evaporator
EP1039246A3 (de) * 1999-03-19 2003-01-29 VIESSMANN WERKE GmbH & CO. Kompaktheizkessel
US20040035565A1 (en) * 2002-02-28 2004-02-26 Witzenmann Gmbh Heat exchanger, in particular for swimming pools
EP1562006A1 (de) * 2004-01-30 2005-08-10 Viessmann Werke GmbH & Co KG Heizgeraet
US20060124285A1 (en) * 2003-01-31 2006-06-15 Kite Murray J Heat exchanger
US20070034170A1 (en) * 2005-08-01 2007-02-15 Bradford White Corporation Water heater with convoluted flue tube
US20070125528A1 (en) * 2003-12-30 2007-06-07 Ahmad Fakheri Finned helicoidal heat exchanger
US20070289723A1 (en) * 2006-04-06 2007-12-20 Stephan Koster Internal heat exchanger with calibrated coil-shaped fin tube
US20080210408A1 (en) * 2005-06-01 2008-09-04 Mds Global Holding Ltd. Dispensing of Carbonated Liquids
US20120186792A1 (en) * 2006-11-08 2012-07-26 Thomas Middleton Semmes Architecturally And Thermally Improved Freeze Resistant Window Perimeter Radiator
US20140060786A1 (en) * 2012-09-05 2014-03-06 Hs R & A Co., Ltd. Dual pipe for heat exchange
US20150136368A1 (en) * 2012-06-29 2015-05-21 Waterco Limited Heat exchanger
WO2015159127A1 (en) * 2014-04-15 2015-10-22 Ferrati Andrea Tank for energy recovery
CN105570557A (zh) * 2015-12-15 2016-05-11 安徽省华彩塑料有限公司 一种折弯管
WO2019197907A2 (en) 2018-04-13 2019-10-17 Flowserve Management Company Fluid coolers, heat exchangers, seal assemblies and systems including fluid coolers or heat exchangers and related methods

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492520A (en) * 1975-04-16 1977-11-23 Daido Steel Co Ltd Heat exchanger for industrial furnaces
US4220121A (en) * 1978-04-05 1980-09-02 Brunswick Corporation Heat exchanger for marine propulsion engines
DE2916691C2 (de) 1979-04-25 1983-11-24 Bayerische Motoren Werke AG, 8000 München Kühlvorrichtung für Brennkraftmaschinen
DE2954276C2 (de) * 1979-04-25 1985-06-13 Bayerische Motoren Werke AG, 8000 München Kühlvorrichtung für Brennkraftmaschinen, insbesondere für Wasserfahrzeug-Antriebe
US4502530A (en) * 1982-09-23 1985-03-05 Carrier Corporation Waterbox for a shell and tube heat exchanger
EP0108525A1 (de) * 1982-11-03 1984-05-16 Thermodynetics, Inc. Wärmetauscher
JPS59186562A (ja) * 1983-01-14 1984-10-23 アメリカン　ホスピタル　サプライ　コ−ポレ−シヨン 血液酸素供給器
FR2605955A1 (fr) * 1986-10-29 1988-05-06 Valeo Dispositif de chauffage de lave-glace, en particulier pour vehicule automobile
FR2680740B1 (fr) * 1991-09-03 1993-10-29 Valeo Systemes Essuyage Dispositif de chauffage d'un liquide de lave-glace, notamment pour un pare-brise de vehicule automobile.
IT1253145B (it) * 1991-12-09 1995-07-10 Dispositivo scambiatore di calore rapido per fluidi
DE29815951U1 (de) * 1998-09-08 1998-12-24 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim, 75175 Pforzheim Kraftstoffkühler
DE10051756B4 (de) * 2000-10-18 2007-03-01 Witzenmann Gmbh Wärmetauscher füür Schwimmbäder
EP2487431A1 (de) * 2011-02-14 2012-08-15 Aalborg Industries A/S Kessel oder Heizelemente und -konfigurationen für Druckgase, wie etwa Abgase
DE102011119313A1 (de) * 2011-11-23 2013-05-23 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Koaxialrohr-Wärmetauscher für eineKraftfahrzeugklimaanlage

Citations (4)

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US1939160A (en) * 1931-12-24 1933-12-12 Wisner Mfg Company Temperature exchanger
US2039066A (en) * 1935-12-19 1936-04-28 Weese Walter E De Water heater
CH293245A (de) * 1948-12-01 1953-09-15 Esslingen Maschf Rippenrohr-Wärmeaustauscher.
US3124122A (en) * 1964-03-10 baron

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Publication number Priority date Publication date Assignee Title
US3124122A (en) * 1964-03-10 baron
US1939160A (en) * 1931-12-24 1933-12-12 Wisner Mfg Company Temperature exchanger
US2039066A (en) * 1935-12-19 1936-04-28 Weese Walter E De Water heater
CH293245A (de) * 1948-12-01 1953-09-15 Esslingen Maschf Rippenrohr-Wärmeaustauscher.

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065264A (en) * 1976-05-10 1977-12-27 Shiley Laboratories, Inc. Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit
US4138288A (en) * 1976-05-10 1979-02-06 Shiley Scientific Incorporated Method and apparatus for oxygenating and regulating the temperature of blood
US4138464A (en) * 1976-05-10 1979-02-06 Lewin John E Blood oxygenator with integral heat exchanger
DE2719171A1 (de) * 1976-05-10 1977-12-01 Shiley Lab Inc Waermeaustausch-verfahren und -vorrichtung zum regulieren der temperatur von blut
US4316501A (en) * 1977-09-26 1982-02-23 Solar Unlimited, Inc. Heat exchanger with leakage collector
DE2854244A1 (de) * 1977-12-23 1979-07-05 Shiley Scient Inc Verfahren und vorrichtung zum behandeln von blut mit sauerstoff und zum regulieren der temperatur von blut durch waermeaustausch
US4306614A (en) * 1978-04-05 1981-12-22 Brunswick Corporation Heat exchanger for marine propulsion engines
US4321963A (en) * 1979-07-05 1982-03-30 Solar Unlimited, Inc. Single layer volute heat exchanger
US4317268A (en) * 1979-08-08 1982-03-02 Solar Limited, Inc. Process for making a heater exchanger
US4559999A (en) * 1983-04-08 1985-12-24 Shiley, Inc. Heat exchanger for extracorporeal circuit
US4669533A (en) * 1984-02-01 1987-06-02 Karl Hehl Cooling and filtering unit for hydraulic drive fluid
US4585056A (en) * 1984-04-18 1986-04-29 Norton Company Heat exchanger
US4895203A (en) * 1985-03-22 1990-01-23 Harold L. Hayes Heat exchanger with helically coiled conduct in casing
US4648355A (en) * 1985-11-18 1987-03-10 Martin Bekedam Heat exchanger array for a step down return of condensate
US4872503A (en) * 1986-03-13 1989-10-10 Marriner Raymond E Air heat exchanger
US4878457A (en) * 1988-10-17 1989-11-07 Martin Bekedam Zero flash closed condensate boiler feedwater system
US4957160A (en) * 1989-12-04 1990-09-18 Gas Research Institute Self-clamping baffle for tubular structures
US5048596A (en) * 1990-01-02 1991-09-17 Mccord Heat Transfer Corporation Oil cooler
US5682947A (en) * 1994-11-15 1997-11-04 Graham Corporation Housing assembly for a coil heat exchanger
WO1996022498A1 (en) * 1995-01-17 1996-07-25 Thompson John G Heat recovery and storage device
US5740857A (en) * 1995-01-17 1998-04-21 Thompson; John G. Heat Recovery and storage system
US5522453A (en) * 1995-03-22 1996-06-04 Green; Kenneth E. Washer fluid heater
US5845704A (en) * 1997-05-16 1998-12-08 Flowserve Management Company Heat exchanger baffle design
US6102106A (en) * 1997-12-31 2000-08-15 Flowserve Management Company Method of servicing a helical coil heat exchanger with removable end plates
US6076597A (en) * 1997-12-31 2000-06-20 Flowserve Management Company Helical coil heat exchanger with removable end plates
EP1039246A3 (de) * 1999-03-19 2003-01-29 VIESSMANN WERKE GmbH & CO. Kompaktheizkessel
WO2002001125A1 (en) * 2000-06-28 2002-01-03 Igc Polycold Systems, Inc. Liquid chiller evaporator
US20040035565A1 (en) * 2002-02-28 2004-02-26 Witzenmann Gmbh Heat exchanger, in particular for swimming pools
US6789615B2 (en) * 2002-02-28 2004-09-14 Witzenmann Gmbh Heat exchanger, in particular for swimming pools
US7597136B2 (en) * 2003-01-31 2009-10-06 Energy Saving Concepts Limited Heat exchanger with helical flow paths
US20060124285A1 (en) * 2003-01-31 2006-06-15 Kite Murray J Heat exchanger
US20070125528A1 (en) * 2003-12-30 2007-06-07 Ahmad Fakheri Finned helicoidal heat exchanger
EP1562006A1 (de) * 2004-01-30 2005-08-10 Viessmann Werke GmbH & Co KG Heizgeraet
US20080210408A1 (en) * 2005-06-01 2008-09-04 Mds Global Holding Ltd. Dispensing of Carbonated Liquids
US20070034170A1 (en) * 2005-08-01 2007-02-15 Bradford White Corporation Water heater with convoluted flue tube
US7458341B2 (en) 2005-08-01 2008-12-02 Bradford White Corporation Water heater with convoluted flue tube
US20070289723A1 (en) * 2006-04-06 2007-12-20 Stephan Koster Internal heat exchanger with calibrated coil-shaped fin tube
US20120186792A1 (en) * 2006-11-08 2012-07-26 Thomas Middleton Semmes Architecturally And Thermally Improved Freeze Resistant Window Perimeter Radiator
US20150136368A1 (en) * 2012-06-29 2015-05-21 Waterco Limited Heat exchanger
US9683785B2 (en) * 2012-06-29 2017-06-20 Waterco Limited Heat exchanger
US20140060786A1 (en) * 2012-09-05 2014-03-06 Hs R & A Co., Ltd. Dual pipe for heat exchange
US9513061B2 (en) * 2012-09-05 2016-12-06 Hs R & A Co., Ltd. Dual pipe for heat exchange
WO2015159127A1 (en) * 2014-04-15 2015-10-22 Ferrati Andrea Tank for energy recovery
CN105570557A (zh) * 2015-12-15 2016-05-11 安徽省华彩塑料有限公司 一种折弯管
WO2019197907A2 (en) 2018-04-13 2019-10-17 Flowserve Management Company Fluid coolers, heat exchangers, seal assemblies and systems including fluid coolers or heat exchangers and related methods
US11703286B2 (en) 2018-04-13 2023-07-18 Flowserve Pte. Ltd. Fluid coolers, heat exchangers, seal assemblies and systems including fluid coolers or heat exchangers and related methods

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