EP0987509B1 - Dispositif d'échange de chaleur - Google Patents

Dispositif d'échange de chaleur Download PDF

Info

Publication number
EP0987509B1
EP0987509B1 EP19990307326 EP99307326A EP0987509B1 EP 0987509 B1 EP0987509 B1 EP 0987509B1 EP 19990307326 EP19990307326 EP 19990307326 EP 99307326 A EP99307326 A EP 99307326A EP 0987509 B1 EP0987509 B1 EP 0987509B1
Authority
EP
European Patent Office
Prior art keywords
capillary
reservoir
unit
liquid
link
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
EP19990307326
Other languages
German (de)
English (en)
Other versions
EP0987509A1 (fr
Inventor
Fabrice Mena
Patrick Bonzom
Christian Zimmerman
Christophe Figus
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.)
Airbus Defence and Space SAS
Original Assignee
Matra Marconi Space France SA
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 Matra Marconi Space France SA filed Critical Matra Marconi Space France SA
Publication of EP0987509A1 publication Critical patent/EP0987509A1/fr
Application granted granted Critical
Publication of EP0987509B1 publication Critical patent/EP0987509B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • F28D15/02—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 in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—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 in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/043—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 in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure forming loops, e.g. capillary pumped loops
    • 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
    • F28D15/02—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 in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—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 in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/046—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 in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure

Definitions

  • This invention relates to a reversible capillary pumped heat transfer loop apparatus according to the preamble of claim 1.
  • Such an apparatus is known from FR-A-2 723 187. It arose in connection with the design of earth orbiting satellites where there is a need to transfer heat from one hot side, facing the sun, to an opposite, cold side. This can be done with the use of one or more evaporators for a working fluid at the hot side and one or more condensers located at the cold side, the evaporators and condensers being connected in a loop essentially as described with reference to Figure 1 of French patent specification FR 2723187. It is to be noted that such systems need to be designed so that they will operate in a gravity-free environment.
  • Rotation of the satellite can be expected to result in different sides of the satellite facing the sun at different times. It is therefore necessary to provide duplicate heat transfer systems designed to operate in opposite directions. However, such need for duplication also duplicates the weight. This is a problem because any weight added to the infrastructure of the satellite will reduce the maximum possible weight of its payload. Another problem arises from the fact that two separate heat pipe loops require twice the interface surface for heat collection and dissipation and there may be insufficient space available for this. Yet another problem is that two heat pipe loops require twice the amount of working fluid which may be toxic and corrosive giving rise to problems during manufacture and if there is leakage.
  • French patent specification 2723187 describes a technique for avoiding the need to duplicate the heat transfer systems. It describes, with reference to Figures 2-6, a capillary pumped heat transfer apparatus which is reversible. Using a single loop, heat is automatically transferred in a direction from a hot location to a cold location. However, although the desired effect is achieved using just one loop, the amount and therefore weight of components in that loop is not much less than what would be required in duplicate systems. This is because the system needs to contain an evaporator and a condenser at the hot location and also at the cold location. The evaporator, at the location which is for the time being cold, is essentially redundant, as is the condenser at the location which is, for the time being, hot.
  • French patent specification 2723187 does envisage the possibility of its evaporators also acting as condensers but, so far as the inventors know, no such system has been tried in practice.
  • Patent specification WO 97/00416 describes a capillary pumped heat transfer loop having a bank of evaporators connected in parallel at a hot location from which heat is to be removed. Thermally separated from the evaporators is a reservoir to which each of the evaporators is connected by a capillary link. This ensures that the capillary wick in the evaporator is continuously fed with liquid for evaporation.
  • the inventors have now recognized that an unexpected advantage can be obtained by using a capillary link, similar in function to that of WO 97/00416, in a reversible system.
  • the advantage is that, when one of the units is being used (or starts to be used) as a condenser, the capillary link ensures that the wick is saturated with liquid and therefore does not tend to create an unwanted capillary pumping action in opposition to the wanted pumping action pumping action of the unit or units at the hot location. To obtain this effect it is necessary, of course, to include a reservoir at both locations.
  • a reversible capillary pumped heat transfer loop apparatus for transferring heat between first and second locations and comprising, at each location, a heat transfer unit for evaporating a working fluid when the unit is required to remove heat and for condensing the working fluid when the unit is required to deliver heat, each such unit including a capillary device and one or more channels associated with the capillary device for the collection of fluid from it when the unit is acting as an evaporator and for the feeding of fluid from the other unit to it when the unit is acting as a condenser; characterised in that each unit comprises a fluid reservoir into which the capillary device extends and in that the capillary device comprises a wick of absorbent material having relatively fine capillary ducts to provide pumping pressure for the fluid when the unit is acting as an evaporator and a capillary link of absorbent material having relatively coarse capillary ducts and serving as means for feeding liquid from the reservoir to the wick when the unit is acting as an e
  • Each unit preferably includes a tubular housing of heat conducting material defining the aforementioned channels, which open onto an inner surface of the housing. This allows heat to be readily conducted away from vapour in the channels when the unit is operating as a condenser.
  • the channels are preferably formed at a first end of the housing whilst the other, second, end of the housing defines the reservoir.
  • the heat conducting material of the housing is preferably a metal alloy since this allows the channels to be formed by an extrusion process and also helps to reduce weight.
  • the capillary device is also of generally tubular configuration and fits in the housing in contact with its inner surface at least at the aforementioned "first" end.
  • the capillary device takes the form of a capillary wick of relatively fine capillary structure to generate the pumping action; and a capillary link, having a relatively coarse capillary structure, for supplying liquid from the reservoir to the wick.
  • the capillary link is preferably made from synthetic plastics material, for example polyethylene.
  • synthetic plastics is relatively light compared with alternative materials such as stainless steel.
  • the capillary material lines (or at least partially lines) an inner surface of the reservoir so as to provide further thermal insulation of the contents of the reservoir.
  • the capillary link can be machined from a body of sintered powder, e.g. polyethylene powder, its external surfaces being shaped so as to make close resilient contact with internal surfaces of the reservoir and of the capillary wick.
  • the capillary wick is also formed with a central aperture or bore defining a passage from the reservoir into the part of the housing that contains the wick.
  • an inlet pipe for liquid from the condenser passes from one end of the housing, through the reservoir and well into the capillary link, preferably to the other end of the housing so that liquid leaving an open end of the inlet pipe flows in a reverse direction along the aforementioned bore before being absorbed into the capillary material. This reverse flow helps any bubbles of gas to drift towards the reservoir.
  • the inlet pipe needs to be of relatively small diameter causes a high velocity of flow through it, reducing any heating effect, and consequential generation of bubbles, as it passes through the reservoir.
  • the illustrated heat transfer system comprises two units 1 located at first and second locations 2 and 3 respectively, as shown in Figure 1.
  • the units 1 are identical, so only one will be described.
  • This comprises a body 4 of metal chosen for its heat conducting properties and ease of extrusion. It has a generally tubular configuration having a first end defining a first port 5 and a second end having a second port 6 located in a threaded plug 7.
  • the tubular housing 4 has a part 8 of relatively small diameter and which carries a flange 9 serving as a mechanical support and to transfer heat to and from a part or component of the spacecraft.
  • On an inner surface of the portion 8, a large number of grooves 10 are formed as shown in Figure 2. These grooves extend parallel to the axis of the body 4.
  • Each groove has an open side 11 having a width which is slightly less than half the width of the flats 12 between adjacent grooves.
  • an internal bore of the body 4 is machined to define internal shoulders 15, 16 and 17.
  • the shoulder 17 forms an acute angle with the axis of the body 4 and is aligned with a corresponding shoulder 17A on the external surface of the body 4.
  • the shoulders 17, 17A divide a small diameter part 8 at one end the body 4 from a larger diameter part 18 at the opposite end.
  • This wider part 18 serves as a reservoir for working fluid. Its volume is greater than the volume of the narrower part 8 of the body 4 and the total volumes of all reservoirs in the loop accounts for more than half of the volume of fluid in the loop.
  • the body 19 Contained within the body 4 is a capillary device formed from two separate tubular bodies 19, 20.
  • the illustrated embodiment it is constructed from PTFE powder which is sintered to form a porous rigid body having a pore size of about 2.5 ⁇ m.
  • suitable materials include: sintered metal e.g. copper, stainless steel wire, molybdenum, tungsten, titanium or nickel; sintered ceramics; and many forms of open cell, foamed or sintered thermoplastic materials which may be glass-filled and/or powder filled.
  • the purpose of filling the plastics material is to decrease the thermal expansion coefficient of the material and to increase the Young's modulus.
  • Another powdered material may be introduced to increase the porosity of the wick; this powder may be removed, after sintering, by a post-burning process.
  • the wick 19 is machined to the required shape. It has a shoulder 21 on its external surface which engages against the shoulder 15 on the internal surface of the body 4 to locate it in a desired axial position.
  • the internal bore of the wick 19 is flared outwardly at its open end to co-operate with a tapered ferrule 22.
  • An externally threaded plug 23 co-operates with an internal thread of the body 4 between the shoulders 16 and 17 so as to exert axial pressure on the ferrule 22, thereby pressing the porous wick 19 into a fluid tight contact with the internal wall of the body 4.
  • the capillary link 20 is, in the illustrated example, made in a way similar to that of the wick 19 but from sintered polyethylene powder and has a pore size of about 105 ⁇ m so that it defines relatively coarse capillary passages. It has a relatively narrow part 24 which fits tightly into the body 19, because of the natural elasticity of the synthetic plastics materials, and extends from an open end to a shoulder 26 which is located against the shoulder 17 of the body 4. The shoulder 26 leads to a wide part 25 of the link 20 which is located against the internal wall of the wide part of the body 4. The link 20 is held axially in position by the plug 7.
  • capillary link 20 could be made from other synthetic plastics materials, possibly glass-filled.
  • the plug 7 also supports a pipe 27 which extends along the axis of the body 4 connecting the port 6 to a point close to the open end of the capillary link 20. Its outer diameter is significantly smaller than the inner diameter of the narrow part of the link 20 so as to allow the passage of fluid therebetween. It is held in its axial position by kinks making contact with the inner surface of the link 20 so as to space the pipe 27 from that inner surface.
  • the vapour is collected, as indicated by the arrows on Figure 3, by the channels 10 and transmitted along them to the port 5.
  • capillary pumping more liquid is introduced into the capillary wick 19 from the capillary link 20; and into the capillary link 20 either directly from the pipe 27 or from the reservoir 18.
  • any bubbles of vapour inside the narrow part 24 of the link 20 will not be absorbed by it.
  • Such bubbles will pass into the reservoir where, being cooler, they may condense.
  • the link 20 in this way acts as a simple heat pipe between the relatively hot flange 9 and the cooler reservoir 18. It maintains a flow of liquid towards the fine capillary wick 19 and helps to move gas bubbles in the direction of the reservoir, this latter effect acting in concert with the flow of liquid from pipe 27 (to be described later).
  • the temperature of the reservoir 18 at the hot location defines the saturation temperature of the working fluid and therefore needs to be controlled.
  • the temperature is self-controlled by a balance of parasitic heat fluxes transferred: within the body 4; by the gas bubbles pushed towards the reservoir; by cold liquid coming from the condenser; and by external thermal leaks with the environment.
  • a notable feature is that heat flow from the flange 9 to liquid in the reservoir is limited by the thermally insulating properties of the material from which the capillary link 20 is made. It provides a thermally insulating lining on the inner surface of the reservoir.
  • an active temperature control system could be included. This could employ heaters, Peltier cells, dedicated radiative surfaces, etc. The materials and construction of the apparatus would then need to be such as to minimise parasitic heat fluxes.
  • Vapour from the port 5 is transferred by the capillary pumping action along pipework to a corresponding port at location 3 where it enters the grooves 10.
  • the content is entirely vapour but this condenses progressively along the channel so that at the opposite end its content is entirely liquid.
  • the situation close to the input end is shown at the right hand side of Figure 3, where it can be seen that a thin film C of condensed liquid has formed over the entire surface of the groove as heat is conducted from the vapour through this surface and into the conductive body 8.
  • the uniformity of this thin film is a significant advantage as compared with previous designs of evaporator which have employed rectangular or dovetail shaped grooves having corners where the liquid tends to accumulate.
  • the accumulation of liquid in the corners reduces the effective surface area through which heat from the vapour can be conducted away and increases the thickness of the film of liquid, which acts as an insulator between the vapour and the body 4 thereby impeding the transfer of heat.
  • the only corners effective to attract the liquid are those, shown at C, formed between the conductive metal body 8 and the capillary wick 19, so the surface area of metal in close thermal contact with the vapour is as high as possible and so that the liquid, after condensation from the vapour, is removed as quickly as possible from this surface.
  • the liquid passes into the wick which is entirely saturated with liquid because its temperature, like that of the body part 8, is cooler than the saturation temperature of the fluid. Therefore, there can be no capillary action of the elements 19 or 20, these being entirely passive when the apparatus is acting as a condenser.
  • the condenser is hydraulically passive: fluid flows through it only because it is pushed by the pressure generated by the evaporator.
  • the condensed liquid is pushed into the reservoir or passes directly into the pipe 27 from where it passes to the port 6 of the unit at location 2.
  • the small diameter of the pipe 27 ensures that this liquid passes through the relatively hot reservoir at a relatively high velocity, thereby minimising the opportunity for it to evaporate.
  • the risk of bubbles entering the capillary elements of the evaporator is thus considerably reduced and any such bubbles that do form tend to be carried by the reverse flow of liquid from the open end of the pipe 27 towards the reservoir.

Claims (14)

  1. Un appareil à boucle de transfert de chaleur pompée par capillaire réversible pour transférer de la chaleur entre des premier et deuxième emplacements (2, 3) et comprenant, à chaque emplacement, une unité de transfert de chaleur (1) pour faire évaporer un fluide actif lorsque l'unité est requise pour évacuer de la chaleur et pour condenser le fluide actif lorsque l'unité est requise pour procurer de la chaleur, chaque unité (1) de ce type comportant un dispositif capillaire (19, 20) et un ou plusieurs canaux (10) associés au dispositif capillaire pour la collecte de fluide provenant de celui-ci lorsque l'unité fait office d'évaporateur et pour l'alimentation de celui-ci en fluide provenant de l'autre unité lorsque l'unité fait office de condenseur ; caractérisé en ce que chaque unité comprend un réservoir de fluide (18) dans lequel le dispositif capillaire s'étend, et en ce que le dispositif capillaire comprend une mèche (19) de matière absorbante ayant des conduits capillaires relativement fins pour fournir au fluide une pression de pompage lorsque l'unité fait office d'évaporateur et une liaison capillaire (20) de matière absorbante ayant des conduits capillaires relativement gros et servant de moyen d'alimentation de la mèche (19) en liquide provenant du réservoir (18) lorsque l'unité fait office d'évaporateur, les volumes combinés des réservoirs et la quantité de fluide actif dans la boucle étant sélectionnés de façon à faire en sorte qu'il y ait toujours suffisamment de liquide dans le réservoir pour garder les dispositifs capillaires saturés de liquide.
  2. Appareil selon la revendication 1 comprenant un logement tubulaire (4) dans lequel se trouve le dispositif capillaire, le canal ou les canaux (10) étant définis entre le logement (4) et le dispositif capillaire (19, 20); et le réservoir (18) étant défini par une extrémité du logement (4).
  3. Appareil selon la revendication 2 dans lequel le logement tubulaire a une portion (18) de diamètre agrandi définissant le réservoir.
  4. Appareil selon la revendication 2 ou la revendication 3 dans lequel le dispositif capillaire comporte un corps tubulaire de matière absorbante ayant un axe qui s'étend dans le même sens qu'un axe du logement tubulaire.
  5. Appareil selon n'importe quelle revendication précédente dans lequel la liaison capillaire (20) est un élément préformé rigide.
  6. Appareil selon n'importe quelle revendication précédente dans lequel la mèche (19) et la liaison capillaire (20) sont toutes deux tubulaires, la liaison capillaire (20) ayant une portion relativement étroite (24) qui s'emboíte à l'intérieur de la mèche (19) et ayant une portion relativement large (25) qui réside dans le réservoir (18).
  7. Appareil selon n'importe quelle revendication précédente comprenant un dispositif de serrage annulaire (22, 23) formant un joint entre le réservoir (19) et le canal ou les canaux (10).
  8. Appareil selon la revendication 7 dans lequel la liaison capillaire (20) passe au travers du dispositif de serrage annulaire (22, 23).
  9. Appareil selon n'importe quelle revendication précédente comprenant un tuyau (27) s'étendant à partir d'un premier orifice (6) à une extrémité du logement tubulaire, au travers du réservoir (8) et de la liaison capillaire (20), pour approvisionner le dispositif capillaire (19, 20) en liquide à une extrémité éloignée du réservoir.
  10. Appareil selon la revendication 9 comprenant un deuxième orifice (5) à l'extrémité opposée du logement tubulaire (4) et communiquant avec le ou chaque canal (10).
  11. Appareil selon n'importe lesquelles des revendications 2 à 10 comprenant un certain nombre de canaux définis par des rainures s'étendant le long d'une surface intérieure (12) de l'élément tubulaire.
  12. Appareil selon la revendication 11 dans lequel les rainures sont formées par extrusion ou érosion par étincelage.
  13. Appareil selon n'importe quelle revendication précédente dans lequel la quantité de fluide dans la boucle est suffisante pour faire en sorte qu'il y ait une réserve de liquide dans les réservoirs (18) à toutes températures de fonctionnement normal du système.
  14. Appareil selon n'importe quelle revendication précédente dans lequel la liaison capillaire est réalisée en matière calorifuge et forme une chemise calorifuge qui s'étend sur au moins une portion d'une surface interne dudit réservoir.
EP19990307326 1998-09-15 1999-09-15 Dispositif d'échange de chaleur Expired - Lifetime EP0987509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9811506A FR2783313A1 (fr) 1998-09-15 1998-09-15 Dispositif de tranfert de chaleur
FR9811506 1998-09-15

Publications (2)

Publication Number Publication Date
EP0987509A1 EP0987509A1 (fr) 2000-03-22
EP0987509B1 true EP0987509B1 (fr) 2003-07-16

Family

ID=9530454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990307326 Expired - Lifetime EP0987509B1 (fr) 1998-09-15 1999-09-15 Dispositif d'échange de chaleur

Country Status (2)

Country Link
EP (1) EP0987509B1 (fr)
FR (1) FR2783313A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7931072B1 (en) 2002-10-02 2011-04-26 Alliant Techsystems Inc. High heat flux evaporator, heat transfer systems
US8109325B2 (en) 2000-06-30 2012-02-07 Alliant Techsystems Inc. Heat transfer system
US7708053B2 (en) 2000-06-30 2010-05-04 Alliant Techsystems Inc. Heat transfer system
US7251889B2 (en) 2000-06-30 2007-08-07 Swales & Associates, Inc. Manufacture of a heat transfer system
US8047268B1 (en) 2002-10-02 2011-11-01 Alliant Techsystems Inc. Two-phase heat transfer system and evaporators and condensers for use in heat transfer systems
US8136580B2 (en) 2000-06-30 2012-03-20 Alliant Techsystems Inc. Evaporator for a heat transfer system
US7004240B1 (en) 2002-06-24 2006-02-28 Swales & Associates, Inc. Heat transport system
US7549461B2 (en) 2000-06-30 2009-06-23 Alliant Techsystems Inc. Thermal management system
US6889754B2 (en) 2000-06-30 2005-05-10 Swales & Associates, Inc. Phase control in the capillary evaporators
US7661464B2 (en) 2005-12-09 2010-02-16 Alliant Techsystems Inc. Evaporator for use in a heat transfer system
US20150083361A1 (en) * 2012-12-13 2015-03-26 Empire Technology Development, Llc Heat transfer system and method
FR3065279B1 (fr) 2017-04-18 2019-06-07 Euro Heat Pipes Evaporateur a interface de vaporisation optimisee
JP2020020518A (ja) * 2018-07-31 2020-02-06 株式会社リコー 蒸発器、ループ型ヒートパイプ、冷却装置及び電子機器
CN111076582B (zh) * 2019-11-22 2021-03-26 北京空间机电研究所 一种航天器用防逆流多芯毛细泵组件
JP6980081B1 (ja) * 2020-11-13 2021-12-15 古河電気工業株式会社 ヒートパイプ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216537B1 (fr) * 1973-02-06 1975-03-07 Gaz De France
DE3613802A1 (de) * 1986-04-24 1987-10-29 Dornier System Gmbh Integrierter kapillarverdampfer als waermeaufnehmendes element eines thermalkreislaufs
US4765396A (en) * 1986-12-16 1988-08-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Polymeric heat pipe wick
FR2723187B1 (fr) 1994-07-29 1996-09-27 Centre Nat Etd Spatiales Systeme de transfert d'energie entre une source chaude et une source froide
BE1009410A3 (fr) 1995-06-14 1997-03-04 B C A Sa Dispositif de transport de chaleur.
FR2752291B1 (fr) * 1996-08-12 1998-09-25 Centre Nat Etd Spatiales Evaporateur capillaire pour boucle diphasique de transfert d'energie entre une source chaude et une source froide

Also Published As

Publication number Publication date
EP0987509A1 (fr) 2000-03-22
FR2783313A1 (fr) 2000-03-17

Similar Documents

Publication Publication Date Title
EP0987509B1 (fr) Dispositif d'échange de chaleur
EP1957925B1 (fr) Systeme de transfert de chaleur avec evaporateur
US5725049A (en) Capillary pumped loop body heat exchanger
US4470450A (en) Pump-assisted heat pipe
US4934160A (en) Evaporator, especially for discharging waste heat
US8066055B2 (en) Thermal management systems
US4883116A (en) Ceramic heat pipe wick
EP0351163B1 (fr) Echangeur de chaleur condenseur/évaporateur avec pompage à faible chute de pression
US4830097A (en) Space vehicle thermal rejection system
EP0316044B1 (fr) Système de distribution pour le liquide de travail d'un caloduc
US6397936B1 (en) Freeze-tolerant condenser for a closed-loop heat-transfer system
US20040182550A1 (en) Evaporator for a heat transfer system
US4492266A (en) Manifolded evaporator for pump-assisted heat pipe
WO2013172988A1 (fr) Vanne capillaire actionnée par la température pour système de tuyau de chaleur en boucle
US4441548A (en) High heat transport capacity heat pipe
EP0806620A2 (fr) Evaporateur capillaire
JPH10503580A (ja) 温熱源、冷熱源間エネルギー移動システム
US4627487A (en) Separate liquid flow heat pipe system
EP1549897B1 (fr) Evaporateur pour systeme de transfert thermique
JP2904199B2 (ja) キャピラリポンプループ用蒸発器及びその熱交換方法
JP5060785B2 (ja) 熱伝達システムの製造
US20020139516A1 (en) Heat pipe with a secondary wick for supplying subcooled liquid to high heat flux areas
RU2079081C1 (ru) Контурная тепловая труба
JP2707070B2 (ja) 高温用ヒートパイプ
JP2732755B2 (ja) 二重管ヒートパイプ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE FR IT NL

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000921

AKX Designation fees paid
RBV Designated contracting states (corrected)

Designated state(s): BE FR IT NL

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 20020109

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE FR IT NL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20040419

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CJ

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA

BECA Be: change of holder's address

Owner name: ATRIUM SAS, RUE LAURENT PICHAT, FR-75016 PARIS

Effective date: 20091118

BECN Be: change of holder's name

Owner name: ASTRIUM SAS

Effective date: 20091118

REG Reference to a national code

Ref country code: NL

Ref legal event code: TD

Effective date: 20100226

Ref country code: NL

Ref legal event code: SD

Effective date: 20100226

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160915

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180928

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20180926

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180927

Year of fee payment: 20

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20190914

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20190915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160915

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180926

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20190710