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US3171477A - Heat exchanger using an intermediate liquid - Google Patents

Heat exchanger using an intermediate liquid Download PDF

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Publication number
US3171477A
US3171477A US207276A US20727662A US3171477A US 3171477 A US3171477 A US 3171477A US 207276 A US207276 A US 207276A US 20727662 A US20727662 A US 20727662A US 3171477 A US3171477 A US 3171477A
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United States
Prior art keywords
fluid
casing
secondary fluid
heat
tube nest
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Expired - Lifetime
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US207276A
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English (en)
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Huet Andre
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Individual
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    • 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
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • 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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium

Definitions

  • the present invention has for its object a heat exchanger specially designed for the exchange of heat between two viscous fluids having a fouling action and in which an intermediate or secondary fluid, for example water, circulating in closed circuit inside nests of tubes is used for transmitting the heat to be exchanged.
  • These tubes are arranged in such manner as to transfer the heat from one of the viscous fluids circulating around a part of the nest of tubes containing the intermediate liquid to the other viscous fluid which it is desired to heat and which circulates around another part of the nest of tubes.
  • the heat exchanger is constituted by half-casings, or small towers, which are superposed in pairs. Inside them are mounted and assembled, in closed circuit, from the lower half-casings to the upper half-casings, the nests of tubes containing the intermediate liquid securing the transfer of the heat.
  • the viscous heating fluid circulates around the nests of tubes of the lower half-casings and the viscous fluid to be heated circulates around the nests of tubes of the upper half-casings.
  • the circulation of the intermediate fluid for example water
  • the circulation of the intermediate fluid may be effected either by natural circulation or by forced circulation, the water circulating in the nest of tubes of the lower half-casing being heated on contact with the viscous heating fluid, or being vaporised, and passing from there into the nest of tubes of the upper half-casing in which it is cooled or condensed, giving up its heat to the viscous liquid to be heated. It is possible to provide a large number of these half-casings operating in series, or in parallel, in order to achieve all the heat exchange conditions which occur in practice.
  • the nests of tubes may be produced with the aid of straight tubes or of tubes coiled in helices, which may be either of circular section or of flattened section of lenticular form, the arrangement of these tubes being devised so that the cleaning of their outer surfaces is easy and rapid.
  • the inside of the tubes of the nests containing the intermediate liquid is never fouled, since this is a liquid such as water, and the cleaning of the apparatus is confined to the outer surfaces of the nests of tubes.
  • FIG. 1 shows, in partially diagrammatic vertical section a first form of embodiment of a unit forming the object of the invention.
  • FIG. 2 relates to a modified constructional form
  • FIG. 3 shows diagrammatically the arrangement of a plurality of units through which the viscous fluids flow in parallel.
  • each heat-exchanger unit is composed of two identical jackets or casings a and b in the form of two small superposed columns or towers. Inside each of these columns a, b there are disposed nests of tubes coiled in helices having as their common axis the axis XX of the columns.
  • the tubes of the coils are either of circular section or, as shown in the drawing, of lenticular section, preferably with unequally convex faces.
  • Three coaxial drums or cylinders c, d, 2, preferably having their turns in contact, are thus formed.
  • an axial header communicates through an expansion turn g with a header h to which the circuits of the cylinders c, d, e are connected in parallel.
  • the headers h are shown with horizontal axes, but could have vertical axes.
  • the cylinders c, d, e open into a headeri which could have a vertical axis.
  • the intermediate or secondary fluid for example water flows through the cylinders c, d, e of the lower column, passes through the conduit j to the header 1' of the upper column a, where it flows through the cylinders c, d, e of the column a, and leaving through the lower header 1 of the column a, returns through the conduit k to the lower header of the column b.
  • the viscous fluid to be heated enters the inlet orifice n at the bottom of the lower portion in the direction of the arrow H and issues, in the direction of the arrow I, at the top through the axial conduit 0.
  • the viscous heating fluid circulating through the lower column b from F to G flows around the cylinders c, d, e and gives up its heat to the water circulating in these cylinders, which is heated and vaporised.
  • This water passes through the conduit j into the upper column a and circulates inside the cylinders c, a, e of this column, where it gives up its heat to the viscous fluid to be heated, which enters the column a at H and leaves it at I.
  • the water flows in closed circuit by natural circulation or else by forced circulation obtained by means of a pump p.
  • these circuits are preferably fast with the upper head q of the upper column a, which head is mounted removably.
  • the assembly of circuits or cylinders c, d, e is fast with the lower head I and, after the intermediate fluid circuit has been cut at u and y, the cylinders c, d, e are withdrawn from the column b at the bottom.
  • the general arrangement is the same, but the tubes constituting the nests in which the intermediate fluid'circulat'es are rectilinear tubes parallel to the axis XX
  • the circulation of intermediate fluid and the circulation of the viscous fluid are carried out as in the case of FIG. 1;
  • Carrying into effect may comprise, asshown in FIG. 3,
  • the viscous heating fluid circulates in parallel through the lower columns b, in the direction indicated by the arrows, if necessary under the effect'of the'pump we
  • the viscous fluid tobe heated circulates'in parallel through the upper columns a, in the direction indicated by the arrows, if necessary under the ettect of the pump w.
  • Each pair of columns a and b contain the nest of tubes in which flows the intermediate-fluid circulating in closed circuit as indicated in dash lines y in FIG. 3.
  • a heat exchanger apparatus for exchanging heat between a secondary fluid and viscous fluids having fouling action comprising, a lower, elongated, tubular casing and an upper elongated, tubular casing disposed above the lower casing, a secondary closed circuit in operation for containing therein in operation a secondary fluid comprising an upper and a lower heat transfer tube nest in each of saidcasings respectively extending longitu 4 secondary fluid flows in said lower tube nest generally upwardly and in said upper tube nest generally in an opposite downwardly direction, said lower casing having an upper inlet and a lower outlet for flowing therethrough a viscous fluid in a generally'counter-flow direction to the direction of flow of said secondary fluid for transferring heat therefrom to said secondary fluid, said'up'per casing having a lower inlet and'an upper outlet forvflowing through said lower 'casinga'viscous fluid in a generally counter-flow direction'to'the "general direction of flow of'the secondary fluidflowing through said upper tube nest
  • each of said casings is internally free of baffles.
  • conduit means including a tubular fitting extending through the top of said lower casing and slidably'rnounted therein in a fluid-tight condition'connected for flowing secondary fluid from an upper end portion of said lower tube nest of each lower casing to an upper end portion'of said upper tube nest in said upper casing and conduit means including a tubular fitting extending through the, bottom of said upper casing and slidably mounted therein in a fluid-tight condition connected for flowing secondary fluid from a lower end portion of said upper tube nest to a lower end portion of said lower tube vnest thereby to provide a flow path in which said References Cited by the Examiner W UNITED STATES PATENTS 2,595,195

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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)
US207276A 1961-09-18 1962-07-03 Heat exchanger using an intermediate liquid Expired - Lifetime US3171477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR873478A FR1307972A (fr) 1961-09-18 1961-09-18 échangeur de chaleur à liquide intermédiaire

Publications (1)

Publication Number Publication Date
US3171477A true US3171477A (en) 1965-03-02

Family

ID=8763024

Family Applications (1)

Application Number Title Priority Date Filing Date
US207276A Expired - Lifetime US3171477A (en) 1961-09-18 1962-07-03 Heat exchanger using an intermediate liquid

Country Status (5)

Country Link
US (1) US3171477A (de)
BE (1) BE619520A (de)
CH (1) CH380764A (de)
FR (1) FR1307972A (de)
NL (1) NL282364A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350296A (en) * 1961-08-01 1967-10-31 Exxon Research Engineering Co Wax separation by countercurrent contact with an immiscible coolant
US3732922A (en) * 1970-03-06 1973-05-15 Stein Industrie Heat-exchanger module
US4187902A (en) * 1971-10-13 1980-02-12 Hercofina Heat exchange apparatus
US4280556A (en) * 1980-01-22 1981-07-28 Suntime, Inc. Heat exchanger-tank assembly for hot water heating system
US4771824A (en) * 1985-03-08 1988-09-20 Institut Francais Du Petrole Method of transferring heat from a hot fluid A to a cold fluid using a composite fluid as heat carrying agent
US5121791A (en) * 1989-10-16 1992-06-16 Richard Casterline Barrel type fluid heat exchanger and means and technique for making the same
US20080219086A1 (en) * 2007-03-09 2008-09-11 Peter Mathys Apparatus for the heat-exchanging and mixing treatment of fluid media
CN115253327A (zh) * 2022-09-02 2022-11-01 宋玲巧 一种浓缩器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1052700B (it) * 1975-12-18 1981-07-20 Ceretti Ind Spa Scambiatore di calore e sua applicaeione per realizzare un forno di riduzione del minerale
US4084635A (en) * 1976-08-18 1978-04-18 Midland-Ross Corporation Heat recovery and heat distributing apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB343231A (en) * 1929-12-10 1931-02-19 Harris Booth Improved method of heat exchange between viscous liquids
US2596195A (en) * 1947-04-24 1952-05-13 Bell & Gossett Co Heat exchanger for refrigerating systems
FR1175619A (fr) * 1957-05-21 1959-03-31 échangeur de chaleur tubulaire dépourvu de plaques tubulaires
US2911199A (en) * 1956-03-29 1959-11-03 Huet Andre Heat exchanger
GB823904A (en) * 1956-11-30 1959-11-18 Andre Huet Improvements in water-tube steam boilers
FR1224106A (fr) * 1959-01-02 1960-06-22 évaporateur-condenseur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB343231A (en) * 1929-12-10 1931-02-19 Harris Booth Improved method of heat exchange between viscous liquids
US2596195A (en) * 1947-04-24 1952-05-13 Bell & Gossett Co Heat exchanger for refrigerating systems
US2911199A (en) * 1956-03-29 1959-11-03 Huet Andre Heat exchanger
GB823904A (en) * 1956-11-30 1959-11-18 Andre Huet Improvements in water-tube steam boilers
FR1175619A (fr) * 1957-05-21 1959-03-31 échangeur de chaleur tubulaire dépourvu de plaques tubulaires
FR1224106A (fr) * 1959-01-02 1960-06-22 évaporateur-condenseur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350296A (en) * 1961-08-01 1967-10-31 Exxon Research Engineering Co Wax separation by countercurrent contact with an immiscible coolant
US3732922A (en) * 1970-03-06 1973-05-15 Stein Industrie Heat-exchanger module
US4187902A (en) * 1971-10-13 1980-02-12 Hercofina Heat exchange apparatus
US4280556A (en) * 1980-01-22 1981-07-28 Suntime, Inc. Heat exchanger-tank assembly for hot water heating system
US4771824A (en) * 1985-03-08 1988-09-20 Institut Francais Du Petrole Method of transferring heat from a hot fluid A to a cold fluid using a composite fluid as heat carrying agent
US5121791A (en) * 1989-10-16 1992-06-16 Richard Casterline Barrel type fluid heat exchanger and means and technique for making the same
US20080219086A1 (en) * 2007-03-09 2008-09-11 Peter Mathys Apparatus for the heat-exchanging and mixing treatment of fluid media
US8794820B2 (en) * 2007-03-09 2014-08-05 Sulzer Chemtech Ag Apparatus for the heat-exchanging and mixing treatment of fluid media
CN115253327A (zh) * 2022-09-02 2022-11-01 宋玲巧 一种浓缩器

Also Published As

Publication number Publication date
FR1307972A (fr) 1962-11-03
NL282364A (de)
CH380764A (fr) 1964-08-14
BE619520A (fr) 1962-10-15

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