GB982348A - Tubular heat exchanger element with fins - Google Patents

Tubular heat exchanger element with fins

Info

Publication number
GB982348A
GB982348A GB2533/63A GB253363A GB982348A GB 982348 A GB982348 A GB 982348A GB 2533/63 A GB2533/63 A GB 2533/63A GB 253363 A GB253363 A GB 253363A GB 982348 A GB982348 A GB 982348A
Authority
GB
United Kingdom
Prior art keywords
fins
sectors
axis
series
parallel
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
Application number
GB2533/63A
Inventor
Ennemond Maillet
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB982348A publication Critical patent/GB982348A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G17/00—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge
    • C10G17/02—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge with acids or acid-containing liquids, e.g. acid sludge
    • C10G17/04—Liquid-liquid treatment forming two immiscible phases
    • C10G17/06—Liquid-liquid treatment forming two immiscible phases using acids derived from sulfur or acid sludge thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/34—Milling grooves of other forms, e.g. circumferential
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/26—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/06—Casings; Jackets
    • G21C3/08—Casings; Jackets provided with external means to promote heat-transfer, e.g. fins, baffles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Milling Processes (AREA)

Abstract

982,348. Heat exchanger tubes. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 21. 1963 [Jan. 26, 1962], No.2533/63. Heading F4S. [Also in Division G6] A tubular heat-exchange element includes helicoidal fins of constant height set perpendicularly on the external wall thereof and arranged parallel to each other in an even number of identical sectors around the element, the fins being inclined in opposite directions in adjacent sectors to form a herring-bone pattern and the sectors having a concave section directed towards the exterior of the element. In Fig. 1, the tubular element 1 includes six identical sectors 3a, 3b, 3c, ... &c., each sector being delimited by two generator lines 4 parallel with the element axis and comprising a series of helicoidal fins 5 mounted on a concave floor, the axis of the said fins lying outside the perimeter of, and parallel to, the axis of the element. The concavity of the sector must be increased with the number of sectors or series of fins for a given element. The fins in adjacent sectors are inclined in opposite directions whilst their angles of inclination to the axis of the element may be within the limits of 10 to 70 degrees with an optimum between 15 and 45 degrees. The central portion 2 is reserved for the primary fluid of a heat-exchanger tube, or a slug of fissile material in the case of a nuclear fuel can, and in the latter case the number of series of fins depends on the can diameter. The fins may be rectangular or trapezoidal, and may be machined at their extremities to form notched portions 7 of substantially triangular or dovetailed shapes. The extremities may also be deflected slightly causing a changed angle of inclination. Lateral extensions with hollowedout portions may be formed in one piece with the element on certain generator lines to effect the centring of the element in its container.
GB2533/63A 1962-01-26 1963-01-21 Tubular heat exchanger element with fins Expired GB982348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR885980A FR1320186A (en) 1962-01-26 1962-01-26 Improvements to tubular elements for heat exchangers, and in particular to cladding for nuclear fuel

Publications (1)

Publication Number Publication Date
GB982348A true GB982348A (en) 1965-02-03

Family

ID=8771277

Family Applications (3)

Application Number Title Priority Date Filing Date
GB2531/63A Expired GB952304A (en) 1962-01-26 1963-01-21 Process for the manufacture of tubular bodies with fins
GB2534/63A Expired GB960349A (en) 1962-01-26 1963-01-21 Tubular heat exchanger element with fins
GB2533/63A Expired GB982348A (en) 1962-01-26 1963-01-21 Tubular heat exchanger element with fins

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB2531/63A Expired GB952304A (en) 1962-01-26 1963-01-21 Process for the manufacture of tubular bodies with fins
GB2534/63A Expired GB960349A (en) 1962-01-26 1963-01-21 Tubular heat exchanger element with fins

Country Status (7)

Country Link
US (1) US3277960A (en)
BE (2) BE627520A (en)
DE (2) DE1244302B (en)
FR (1) FR1320186A (en)
GB (3) GB952304A (en)
LU (3) LU43084A1 (en)
NL (3) NL287777A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005510639A (en) * 2001-11-23 2005-04-21 ミリケン インダストリアル リミテッド Printing cloth
US20080066898A1 (en) * 2006-09-15 2008-03-20 Foxconn Technology Co., Ltd. Heat dissipation device
US9051943B2 (en) 2010-11-04 2015-06-09 Hamilton Sundstrand Corporation Gas turbine engine heat exchanger fins with periodic gaps
GB2496692B (en) * 2011-11-21 2016-06-08 Hamilton Sundstrand Corp Gas turbine engine heat exchanger fins with periodic gaps
KR101685795B1 (en) * 2015-04-02 2016-12-20 두산중공업 주식회사 Heat exchanger unit
GB201608523D0 (en) * 2016-05-16 2016-06-29 Rolls Royce Plc Heat sink

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024743A (en) * 1934-09-18 1935-12-17 Westinghouse Electric & Mfg Co Heat transfer surface
DE1107259B (en) * 1957-02-09 1961-05-25 Babcock & Wilcox Dampfkessel Rohrfoermiger hollow body for heat exchangers, which is flown against in the axial direction and is provided on the outside with annular or helical ribs
NL262351A (en) * 1958-12-05 1900-01-01

Also Published As

Publication number Publication date
DE1244302B (en) 1967-07-13
NL287778A (en)
DE1238114B (en) 1967-04-06
GB952304A (en) 1964-03-11
US3277960A (en) 1966-10-11
FR1320186A (en) 1963-03-08
GB960349A (en) 1964-06-10
LU43082A1 (en) 1963-03-26
LU43083A1 (en) 1963-03-26
NL287777A (en)
BE627519A (en)
LU43084A1 (en) 1963-03-26
NL287779A (en)
BE627520A (en) 1963-05-16

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