EP3391379B1 - Verbesserte wärmeableitstrukturen mittels natürlicher konvektion für transportbehälter und/oder lagerbehälter für radioaktive materialien - Google Patents

Verbesserte wärmeableitstrukturen mittels natürlicher konvektion für transportbehälter und/oder lagerbehälter für radioaktive materialien Download PDF

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Publication number
EP3391379B1
EP3391379B1 EP16809084.3A EP16809084A EP3391379B1 EP 3391379 B1 EP3391379 B1 EP 3391379B1 EP 16809084 A EP16809084 A EP 16809084A EP 3391379 B1 EP3391379 B1 EP 3391379B1
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EP
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Prior art keywords
height
primary
structures
dissipating heat
fins
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English (en)
French (fr)
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EP3391379A1 (de
Inventor
Kévin BANCE
Olivier Bardon
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TN International SA
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TN International SA
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/10—Heat-removal systems, e.g. using circulating fluid or cooling fins
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/002—Containers for fluid radioactive wastes
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • G21F5/008—Containers for fuel elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal

Definitions

  • the present invention relates to the field of the evacuation of the heat produced by radioactive materials loaded in a packaging for transport and / or storage of radioactive materials.
  • the present invention relates to a structure of heat dissipation by natural convection, intended to equip the periphery of a package for the transport and / or storage of radioactive materials, for example nuclear fuel assemblies or Radioactive waste.
  • This heat removal device is in particular designed so as to limit the temperature reached in service by the various components of the packaging, in particular the seals and the radiological protections, in order to avoid any risk of degradation of these elements.
  • this device is designed so as to be compatible with the constraints of packaging services, such as decontaminability, resistance in the weather, resistance to atmospheric aggressions, resistance to operating conditions such as immersion during loading and unloading, or even confinement of the neutron shielding resin.
  • a known solution for this type of external heat dissipation device is in the form of a covering ferrule enveloping the lateral body of the package, and onto which are welded longitudinal straight fins of appropriate section. These fins are also said to be vertical, because they are oriented in the vertical direction when the packaging itself lies vertically.
  • the document DE 29 10 115 A1 teaches a structure of heat dissipation by natural convection, intended to equip the periphery of a packaging with a height of 5.7m for the transport of radioactive materials.
  • the object of the invention is therefore to at least partially remedy the drawback mentioned above, relating to the embodiments of the prior art.
  • the invention also has at least one of the following optional features, taken individually or in combination.
  • the two adjacent half-structures are arranged in a substantially symmetrical manner.
  • the structure has a possible spacing Ec between the opposite ends of two primary fins jointly forming a fin in the general shape of an inverted V, the two opposite ends forming the point of the V, this spacing Ec meeting the condition Ec / L ⁇ 0 2.
  • the primary fins are straight and inclined by a value between 30 and 60 ° relative to the direction of the height, and preferably inclined by a value of 45 ° relative to this same direction.
  • the width d is constant and identical for all the primary air circulation channels of each half-structure.
  • each half-structure meets the following more precise condition: 0.55 . 0.35 . H 0.5 . h 0.6 / d 0.1 ⁇ The ⁇ 1.8 . 0.35 . H 0.5 . h 0.6 / d 0.1
  • the convective performance of the fins is further increased.
  • the gains in terms of thermal performance are at least of the order of 25% compared to solutions with vertical fins, with identical heat exchange surfaces.
  • the two half-structures are distinct from each other, each having a plate and its own primary fins projecting from the plate. This provides ease of manufacture and assembly.
  • the two half-structures can be produced on the same plate of height H.
  • Each half-structure is substantially planar, which also confers ease of manufacture here.
  • a subject of the invention is also a packaging for the transport and / or storage of radioactive materials comprising a lateral body externally equipped with several heat dissipation structures like that described above, these structures being distributed circumferentially around the lateral body. .
  • a spacing Ec 'between two directly adjacent dissipation structures in the circumferential direction is substantially equal to the spacing Ec.
  • a package 1 for the storage and / or transport of radioactive materials such as nuclear fuel assemblies or radioactive waste (not shown).
  • This package 1 is shown on the figure 1 in the vertical storage position, in which its longitudinal axis 2 is oriented vertically. It rests on a packaging bottom 4, opposite a removable cover 6 in the direction of the height 8, parallel to the longitudinal axis 2. Between the bottom 4 and the cover 6, the packaging 1 has a lateral body s 'extending around the axis 2, and internally defining a cavity 12 for housing the radioactive materials.
  • the lateral body generally comprises an inner ferrule 14 and an outer concentric ferrule 16, defining an annular space centered on the axis 2.
  • the space is filled by thermal conduction means 20 connecting the two ferrules 14, 16, as well as by neutron protection means 22.
  • the aforementioned means 20, 22 are of conventional design and will therefore not be described further.
  • the outer shell 16 is produced using a plurality of heat dissipation structures 30 according to the invention. These structures 30 are distributed circumferentially around the axis 2, and each extend at a height H of between 2 and 5 m according to the direction of the height 8.
  • the structures 30 include bases in the form of rectangular plates, these plates each have two longitudinal edges. These plates are assembled end-to-end by welding at their opposite edges, so as to reconstitute the outer shell 16.
  • two adjacent structures 30 are shown in the circumferential direction 32 of the package. These two structures 30 are identical, and it is preferably the same for all the structures 30 constituting the outer shell 16, their number possibly being between 5 and 40.
  • Each heat dissipation structure 30 comprises two half-structures 30a, 30b of similar designs, and being arranged substantially symmetrically with respect to a radial plane Pr of the package.
  • the half-structure 30a comprises straight and parallel primary fins 40a. They are inclined relative to the direction of the height 8 of the package, also corresponding to the height direction of the structure 30.
  • the angle of inclination Aa of the primary fins 40a relative to the direction 8 is preferably around 45 °.
  • the half-structure 30b comprises primary fins 40b straight and parallel. They are inclined relative to the direction of the height 8 of the packaging, with an angle of inclination Ab preferably of the order of 45 °.
  • the symmetry may not be perfect, for example by providing a small difference in the value of the two angles Aa, Ab, of the order of 10 to 20 °.
  • the primary fins 40a, 40b of the two half-structures form two by two of the fins 44 in the general shape of an inverted V, when the packaging is arranged vertically with its bottom facing downwards, as in the figures 1 and 3 .
  • Each half-structure 30a, 30b can be made in one piece in the direction 8, or segmented in the same direction. In the latter case illustrated on the figure 1 , the half-structure segments are then arranged in continuity with each other, being welded end-to-end.
  • the two half-structures 30a, 30b are distinct from each other, that is to say that they each comprise a plate 46 from which the associated primary fins project, as has been shown for the half-structure 30a on the figure 4 .
  • the two plates 46 are assembled together by welding at their edges facing one another in the circumferential direction, so as to reconstitute a structure 30.
  • the two assembled plates 46 together constitute the abovementioned base in the form of a rectangular plate, participating in reconstitute the outer shell 16.
  • the two half-structures 30a, 30b are of symmetrical design.
  • the primary channels 48a, 48b are also shown, delimited respectively by two fins 40a, 40b directly consecutive, in the direction 8.
  • each half-structure 30a, 30b corresponding to the height H of the structure 30 composed by these two half-structures.
  • the height H is between 2 and 5 m, and preferably close to 4 m.
  • each primary fin 40a, 40b is also the height h of each primary fin 40a, 40b, between 10 and 100 mm, and preferably identical for all the primary fins.
  • each primary air circulation channel 48a, 48b is also one of these important parameters. This width d is between 10 and 50 mm, and is found to be constant and identical for all the channels 48a, 48b, over the entire height H.
  • each primary fin 40a, 40b It is also the thickness Ep of each primary fin 40a, 40b, meeting the condition d / Ep ⁇ 2.5.
  • This thickness Ep is also preferably identical for all the primary fins.
  • each half-structure 30a, 30b is also a key parameter.
  • This width L extending in a transverse direction orthogonal to the direction of the height and comparable to the circumferential direction 32, is identical for the two half-structures and meets the following condition: 0.30 . 0.35 . H 0.5 . h 0.6 / d 0.1 ⁇ The ⁇ 3.5 . 0.35 . H 0.5 . h 0.6 / d 0.1
  • a possible spacing Ec can be provided between the ends opposite two primary fins 40a, 40b, jointly forming a fin in the general shape of an inverted V 44.
  • This spacing arranged at the point of the fin 44, meets the condition Ec / L ⁇ 0.2.
  • the spacings being aligned in direction 8, they together form a sort of vertical air delivery channel 54, at the junction between the two half-structures 30a, 30b of the heat dissipation structure 30.
  • a spacing Ec ' is preferably provided between two directly adjacent dissipation structures 30 in the circumferential direction 32.
  • This spacing Ec' is for example substantially equal to the spacing Ec.
  • the gains in thermal performance can reach up to 90% compared to the conventional solution with vertical straight fins, when the width L approaches the specific value defined by the following product: 0.35. H 0.5 . h 0.6 / d 0.1 .
  • the gains in thermal performance are explained unexpectedly and surprisingly by obtaining a phenomenon of acceleration of the air particles within the primary channels 48a, 48b.
  • This acceleration of the air in the channels results from the interaction between the air suction zones 58 at the inlet of the channels 48a, 48b, and the discharge zones 60 located further downstream of these channels.
  • the air suction zones 58 correspond to the highly grayed-out parts, in the shape of a triangle with the vertex facing upwards. This is explained by the fact that these suction zones 58, within the channels 48a, 48b, are more extensive going downwards.
  • the delivery zones 60 correspond to the less gray parts, in the shape of a triangle with the vertex oriented downwards. This is explained by the fact that these delivery zones are more extensive going upwards.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Claims (10)

  1. Struktur (30) zur Ableitung von Wärme mittels natürlicher Konvektion, die dazu dient, den Umfang eines Behälters (1) zum Transport und/oder zur Zwischenlagerung von radioaktiven Materialien auszurüsten,
    wobei die Struktur dadurch gekennzeichnet ist, dass sie zwei benachbarte Halbstrukturen (30a, 30b) aufweist, die jeweils primäre Rippen (40a, 40b) aufweisen, welche parallel sind und bezüglich einer Höhenrichtung (8) der Struktur geneigt sind, wobei die primären Rippen (40a, 40b) der zwei Halbstrukturen (30a, 30b), jeweils paarweise, Rippen (44) in der generellen Form eines umgedrehten V bilden, wenn der Behälter vertikal mit nach unten gerichtetem Boden (4) angeordnet ist,
    wobei die Struktur die folgenden Parameter aufweist:
    H: die Höhe einer jeweiligen Halbstruktur (30a, 30b) in Richtung der Höhe (8), gemäß der die geneigten primären Rippen (40a, 40b) aufeinanderfolgen, wobei diese Höhe zwischen 2 und 5 m beträgt;
    h: die Höhe einer jeweiligen primären Rippe (40a, 40b), wobei diese zwischen 10 und 100 mm beträgt;
    d: die Breite eines jeweiligen primären Luftzirkulationskanals (48a, 48b) zwischen zwei direkt aufeinanderfolgenden primären Rippen, wobei die Breite zwischen 10 und 50 mm beträgt;
    Ep: die Dicke einer jeweiligen primären Rippe (40a, 40b), wobei diese der Bedingung d/Ep ≥ 2,5 genügt;
    L: die Breite einer jeweiligen Halbstruktur (30a, 30b) gemäß einer Querrichtung senkrecht zur Höhenrichtung (8), wobei die Breite L der folgenden Bedingung genügt: 0,30 ⋅ 0,35 ⋅ H 0,5 ⋅ h 0,6 / d 0,1 ≤ L ≤ 3,5 ⋅ 0,35 ⋅ H 0,5 ⋅ h 0,6 / d 0,1
    Figure imgb0007
  2. Wärmeableitungsstruktur nach Anspruch 1, dadurch gekennzeichnet, dass die zwei benachbarten Halbstrukturen (30a, 30b) im Wesentlichen symmetrisch angeordnet sind.
  3. Wärmeableitungsstruktur nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die primären Rippen (40a, 40b) geradlinig sind und um einen Wert geneigt sind, der zwischen 30° und 60° bezüglich der Höhenrichtung (8) beträgt, und sie vorzugsweise um einen Wert von 45° bezüglich ebendieser Richtung geneigt sind.
  4. Wärmeableitungsstruktur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Breite d für alle primären Luftzirkulationskanäle (40a, 40b) einer jeweiligen Halbstruktur (30a, 30b) konstant und identisch ist.
  5. Wärmeableitungsstruktur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Breite L einer jeweiligen Halbstruktur (30a, 30b) der folgenden Bedingung genügt: 0,55 ⋅ 0,35 ⋅ H 0,5 ⋅ h 0,6 / d 0,1 ≤ L ≤ 1,8 ⋅ 0,35 . ⋅ H 0,5 ⋅ h 0,6 / d 0,1
    Figure imgb0008
  6. Wärmeableitungsstruktur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zwei Halbstrukturen (30a, 30b) voneinander verschieden sind, wobei diese jeweils eine Platte (46) aufweisen und die zu diesen gehörigen primären Rippen von der Platte hervorstehen.
  7. Wärmeableitungsstruktur nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die zwei Halbstrukturen (30a, 30b) auf ein und derselben Platte der Höhe H ausgebildet sind.
  8. Wärmeableitungsstruktur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Halbstruktur (30a, 30b) im Wesentlichen plan ist.
  9. Behälter (1) für den Transport und/oder die Zwischenlagerung von radioaktiven Materialien, aufweisend einen Seitenkörper, der außen mit mehreren Wärmeableitungsstrukturen (30) nach einem der vorgehenden Ansprüche ausgerüstet ist, die um den Seitenkörper herum am Umfang verteilt sind.
  10. Behälter nach dem vorgehenden Anspruch, dadurch gekennzeichnet, dass ein Abstand Ec' zwischen zwei die in Umfangsrichtung (32) direkt benachbarten Ableitungsstrukturen (30) im Wesentlichen gleich groß wie der Abstand Ec ist.
EP16809084.3A 2015-12-14 2016-12-13 Verbesserte wärmeableitstrukturen mittels natürlicher konvektion für transportbehälter und/oder lagerbehälter für radioaktive materialien Active EP3391379B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1562301A FR3045143B1 (fr) 2015-12-14 2015-12-14 Structure amelioree de dissipation de chaleur par convection naturelle, pour emballage de transport et/ou d'entreposage de matieres radioactives
PCT/EP2016/080801 WO2017102729A1 (fr) 2015-12-14 2016-12-13 Structure amelioree de dissipation de chaleur par convection naturelle, pour emballage de transport et/ou d'entreposage de matieres radioactives

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EP3391379A1 EP3391379A1 (de) 2018-10-24
EP3391379B1 true EP3391379B1 (de) 2020-01-08

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US (1) US10381120B2 (de)
EP (1) EP3391379B1 (de)
JP (1) JP6944454B2 (de)
KR (1) KR102604785B1 (de)
CN (1) CN108369829B (de)
FR (1) FR3045143B1 (de)
UA (1) UA122810C2 (de)
WO (1) WO2017102729A1 (de)

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CN112118714B (zh) * 2020-09-30 2022-06-17 杭州华宏通信设备有限公司 一种用于5g设备的室外一体化电源盒
US11605886B1 (en) * 2020-12-23 2023-03-14 Xilinx, Inc. Radome with integrated passive cooling

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Publication number Publication date
US10381120B2 (en) 2019-08-13
FR3045143A1 (fr) 2017-06-16
EP3391379A1 (de) 2018-10-24
FR3045143B1 (fr) 2017-12-22
CN108369829A (zh) 2018-08-03
JP2019502912A (ja) 2019-01-31
KR102604785B1 (ko) 2023-11-21
KR20180092985A (ko) 2018-08-20
WO2017102729A1 (fr) 2017-06-22
CN108369829B (zh) 2021-12-31
JP6944454B2 (ja) 2021-10-06
US20180374592A1 (en) 2018-12-27
UA122810C2 (uk) 2021-01-06

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