GB955425A - Improvements in or relating to cooling arrangements for nuclear reactor fuel elements - Google Patents

Improvements in or relating to cooling arrangements for nuclear reactor fuel elements

Info

Publication number
GB955425A
GB955425A GB26940/60A GB2694060A GB955425A GB 955425 A GB955425 A GB 955425A GB 26940/60 A GB26940/60 A GB 26940/60A GB 2694060 A GB2694060 A GB 2694060A GB 955425 A GB955425 A GB 955425A
Authority
GB
United Kingdom
Prior art keywords
fins
arrow
vanes
angle
transverse
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
GB26940/60A
Inventor
Jean Le Foll
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 GB955425A publication Critical patent/GB955425A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • G21C15/04—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from fissile or breeder material
    • 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
    • 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
    • Y10S376/00—Induced nuclear reactions: processes, systems, and elements
    • Y10S376/90—Particular material or material shapes for fission reactors
    • Y10S376/901—Fuel
    • Y10S376/903—Shapes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

955,425. Nuclear fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 3,1960 [Aug. 13,1959; April 6, 1960], No. 26940/60. Heading G6C. A casing 1 of a nuclear fuel element is provided with transverse fins 2 and deflection surfaces which cause the cooling fluid to be led transversely into the circular channels between the fins. The fuel element may be provided with four longitudinal openings 19 in a cover 5 which surrounds the fins 2 and by scoops 16 mounted on shoulders 17 over two opposite longitudinal openings 19 and facing upstream to act as inlet orifices, the two remaining longitudinal openings 19 acting as outlet orifices, as in the embodiment illustrated in Fig. 6. In the embodiment shown in Fig. 9, blades 22 are arranged so as to form transverse chevrons 23 which are supported on the edges of the fins 2. The principal flow of cooling liquid is in the direction of the arrow 24 and since the angle of inclination of the chevrons 23 to the outer circumferential surface of the fins 2 increases in the same direction, the pressure is lower in the zones 25 than in the zones 26 and transverse currents are set up between the fins 2. In the modification shown in Fig. 11, the same result is obtained by progressively increasing the size of the blades 22 in the downstream direction. In a further embodiment (Fig. 16), the deflection surfaces have a plane triangular or "delta" form and comprise vanes 27 on either side of a backbone 28. There may, for example, be four such backbones 28 arranged symmetrically around the outer circumference of the fins 2. The vanes 27 are inclined to a plane tangential to the fins 2 and the corresponding backbone 28 at an angle the sine of which is preferably equal to or slightly greater than the ratio of the width of the spaces between the fins 2 to the sum of the space width and the fin thickness, i.e. at an angle of 30 degrees where the fins 2 are spaced apart at a distance equal to their thickness. The principal flow of cooling fluid is shown by the arrow 30 while the arrow 31 represents the path of a portion of the same fluid deflected by the vanes 27. The various deflection surfaces described are suitably made from graphite or other material of low neutron absorption.
GB26940/60A 1959-08-13 1960-08-03 Improvements in or relating to cooling arrangements for nuclear reactor fuel elements Expired GB955425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR802766A FR1241855A (en) 1959-08-13 1959-08-13 New process and devices for extracting heat from nuclear reactor fuel elements using transverse fins
FR823516A FR77447E (en) 1959-08-13 1960-04-06 New process and devices for extracting heat from nuclear reactor fuel elements using transverse fins

Publications (1)

Publication Number Publication Date
GB955425A true GB955425A (en) 1964-04-15

Family

ID=26184292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26940/60A Expired GB955425A (en) 1959-08-13 1960-08-03 Improvements in or relating to cooling arrangements for nuclear reactor fuel elements

Country Status (7)

Country Link
US (1) US3179570A (en)
BE (1) BE593730A (en)
CH (1) CH367575A (en)
FR (2) FR1241855A (en)
GB (1) GB955425A (en)
LU (1) LU39049A1 (en)
NL (1) NL254720A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168192A (en) * 1984-12-07 1986-06-11 Atomic Energy Authority Uk Gas cooled nuclear reactors
DE3543227A1 (en) * 1984-12-07 1986-06-19 United Kingdom Atomic Energy Authority, London Gas-cooled nuclear reactor
GB2208749A (en) * 1985-10-07 1989-04-12 Atomic Energy Authority Uk Gas cooled nuclear reactors

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU37990A1 (en) * 1958-12-05
US3368946A (en) * 1964-03-04 1968-02-13 Alfa Laval Ab Fuel assembly
US3435891A (en) * 1967-03-23 1969-04-01 Int Rectifier Corp Air flow baffle for rectifier heat exchanger
US3402766A (en) * 1967-05-23 1968-09-24 Varian Associates Method and means for vapor cooling an electron tube
US3787286A (en) * 1971-12-17 1974-01-22 Combustion Eng Fuel assembly flow redistribution
DE2255699A1 (en) * 1972-11-14 1974-05-16 Kernforschung Gmbh Ges Fuer FUEL ELEMENT FOR A REACTOR
JPS50152097U (en) * 1974-06-04 1975-12-17

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258388A (en) *
US1925720A (en) * 1930-12-20 1933-09-05 Gen Fire Extinguisher Co Fin for heat exchanger
FR795938A (en) * 1934-10-19 1936-03-25 Ig Farbenindustrie Ag Process for heating heating tubes by means of gas containing dust
US2434519A (en) * 1942-04-18 1948-01-13 Raskin Walter Heat exchange conduit with a spiral fin having a capillary groove
US2406551A (en) * 1943-08-28 1946-08-27 United Aircraft Corp Cylinder cooling structure for aircraft engines
US2874940A (en) * 1951-05-16 1959-02-24 Svenska Rotor Maskiner Ab Heat exchanger
GB817963A (en) * 1956-06-22 1959-08-06 Atomic Energy Authority Uk Improvements in or relating to heat transfer systems
BE561143A (en) * 1956-09-28
BE561506A (en) * 1956-11-23
GB816124A (en) * 1956-11-23 1959-07-08 Atomic Energy Authority Uk Improvements in or relating to fuel elements
GB821263A (en) * 1956-11-24 1959-10-07 Atomic Energy Authority Uk Improvements in or relating to fuel elements for nuclear reactors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168192A (en) * 1984-12-07 1986-06-11 Atomic Energy Authority Uk Gas cooled nuclear reactors
DE3543227A1 (en) * 1984-12-07 1986-06-19 United Kingdom Atomic Energy Authority, London Gas-cooled nuclear reactor
GB2168192B (en) * 1984-12-07 1989-08-31 Atomic Energy Authority Uk Gas cooled nuclear reactors
GB2208749A (en) * 1985-10-07 1989-04-12 Atomic Energy Authority Uk Gas cooled nuclear reactors
GB2208749B (en) * 1985-10-07 1989-09-13 Atomic Energy Authority Uk Gas cooled nuclear reactors

Also Published As

Publication number Publication date
FR77447E (en) 1962-03-02
NL254720A (en)
CH367575A (en) 1963-02-28
BE593730A (en) 1960-12-01
LU39049A1 (en) 1960-10-04
FR1241855A (en) 1960-09-23
US3179570A (en) 1965-04-20

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