EP0633442B1 - Echangeur annulaire de sécurité pour fluides incompatibles - Google Patents

Echangeur annulaire de sécurité pour fluides incompatibles Download PDF

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Publication number
EP0633442B1
EP0633442B1 EP93402169A EP93402169A EP0633442B1 EP 0633442 B1 EP0633442 B1 EP 0633442B1 EP 93402169 A EP93402169 A EP 93402169A EP 93402169 A EP93402169 A EP 93402169A EP 0633442 B1 EP0633442 B1 EP 0633442B1
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EP
European Patent Office
Prior art keywords
sheath
heat exchanger
bottle
fluid
heat
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
EP93402169A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0633442A1 (fr
Inventor
Pierre Carpentier
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.)
D'ETUDES ET DE CONSTRUCTIONS AERO-NAVALES Ste
Original Assignee
D'ETUDES ET DE CONSTRUCTIONS AERO-NAVALES Ste
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 D'ETUDES ET DE CONSTRUCTIONS AERO-NAVALES Ste filed Critical D'ETUDES ET DE CONSTRUCTIONS AERO-NAVALES Ste
Priority to US08/212,570 priority Critical patent/US5542467A/en
Priority to CA002119408A priority patent/CA2119408A1/en
Publication of EP0633442A1 publication Critical patent/EP0633442A1/fr
Priority to US08/628,811 priority patent/US5649589A/en
Application granted granted Critical
Publication of EP0633442B1 publication Critical patent/EP0633442B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28F1/105—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being corrugated elements extending around the tubular elements
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type

Definitions

  • the present invention relates to heat exchangers for so-called incompatible fluids.
  • heat exchangers comprising a tank, one side of which is open and on which a collector is clamped to which hairpin tubes are themselves fixed, these tubes extending in the tank.
  • a first fluid circulates in the tank which can include baffles, while a second fluid circulates in the tubes, this second fluid being brought to one end of the tubes by a manifold and recovered from the other end of the tubes by a second manifold.
  • the invention creates a new heat exchanger which holds account for the drawbacks stated in the foregoing and of which the realization means that any communication between the fluids is eliminated effectively, any possible leaks can only occur towards the outside of the exchanger even if some of the walls of the circulation ducts that it contains are subject to accidental abrasion.
  • a safety ring exchanger for fluids incompatible comprising a hollow body closed to a end by a bottom, said body containing a sealed bottle to which it is rigidly attached sealingly, the walls of the bottle being provided laterally of heatsinks, so that said bottle forms partition wall between a first and a second fluid flowing respectively through and other of its walls between an inlet channel and a body outlet channel, for one of the fluids, and between an inlet duct and an outlet duct, for the other fluid and said dissipators ensuring the heat transfer between fluids through the thickness of the bottle to which they are attached.
  • the sealed bottle has a sheath, one end of which is closed by a bottom and the other end of which includes a flange cooperating sealingly with a bearing surface provided at the end of the hollow body which is not closed by the bottom, and the barrel of the bottle is consisting of two tubular parts spanning between they an annular space communicating with a channel of venting provided in the flange.
  • Fig. 1 is a sectional elevation of an embodiment of the heat exchanger, object of the invention.
  • Fig. 2 is a partial section illustrating an embodiment advantageous of one of the organs appearing in FIG. 1.
  • Fig. 3 is a half-section on a larger scale seen substantially along line III-III of fig. 2.
  • Fig. 4 is a half-section similar to FIG. 3 illustrating variant.
  • Fig. 5 is a sectional elevation similar to FIG. 1 illustrating a development of the invention.
  • Fig. 6 is an elevation seen along line VI-VI of the fig. 5.
  • Fig. 7 is a partial sectional elevation of the exchanger according to fig. 5 in an embodiment illustrating a development of the invention.
  • Fig. 8 is a section seen along line VIII-VIII of the fig. 7.
  • Fig. 9 is a partial section illustrating the development of fig. 5 in an embodiment similar to that of the fig. 1.
  • Fig. 10 is a partial sectional elevation similar to the fig. 9 illustrating a further development of the invention.
  • Fig. 11 is a partial section similar to FIG. 9 illustrating a simplified embodiment.
  • Fig. 12 is a cross section taken along the line XII- XII of fig. 5 illustrating a particular form in section of the exchanger of fig. 1 to 11.
  • the exchanger illustrated in the drawing comprises a body, or casing, 1 made by molding in metal, for example in aluminum or an alloy of this metal, in inconel or even by machining, either in light alloy or in stainless steel, titanium or other metal suitable for the intended use.
  • the body 1 defines an envelope 2 of generally cylindrical shape closed at one end by a bottom 3 formed in one piece with envelope 2.
  • the body 1 internally defines a cylindrical wall 4 having distributor recesses at its ends and manifold 5 and 6.
  • the recess 6 is annular while the recess 5 may only extend over a fraction of the periphery of the cylindrical wall 4.
  • the recesses 5 and 6 communicate respectively with a input channel 7 and an output channel 8 intended to be connected to fittings leading to supply lines and not shown.
  • the body 1 is provided with a fixing flange 9 intended to be mounted on a non-support represented may be any.
  • the body 1 could, without departing from the scope of the invention, be an integral part of an engine case or another analogous device.
  • the end of the body 1 which is opposite the bottom 3 defines a bearing surface 10 for a flange 11 formed at one end a sheath 12 closed by a bottom 13 constituting a sealed bottle.
  • the sleeve 12, the flange 11 and the bottom 13 are made in one piece, preferably in alloy light, produced by a machining process that makes the wall the sheath is relatively thick, always greater than the thickness calculated to withstand mechanical forces and at least of the order of 2 to 3 mm.
  • the machining process for producing the sheath 12, the bottom 13 and flange 11 is chosen from those making no cracks can exist in the partition wall of fluids in the bottle-shaped assembly above.
  • Machining a solid part is an embodiment suitable as well as making by rolling the sheath and bottom weld. A process of pushing back or forging can also be used.
  • the respective dimensions of the sleeve 12 and body 1 are chosen so that an interval 15 exists between the inner wall of the bottom 3 and the outer wall from the bottom 13 as well as between the outer wall of the sheath 12 and the inner wall of the envelope 2 of the body 1.
  • Heatsinks 16 for example constituted by a strip corrugated, by fins, pins or other elements analogs, protrude from the inner wall of the sheath and, similarly, heatsinks 17 project from the outer wall of said sheath 12 to extend over the entire useful length of it.
  • the heatsinks 16 and 17 are constituted by corrugated strips, well known in the art of exchangers of heat, they are connected to the sheath 12, for example by soldering.
  • they are constituted by fins, or by fingers, they are produced by machining, for example by milling in a machining center manufacturing of the fluid separation wall formed in part by the sheath 12 and bottom 13. We would not go beyond the framework of the invention by making the sheath 12 and the dissipators by foundry, forging, spinning or other process.
  • the heatsinks 17 are surrounded by a ferrule 18 which can be metallic or possibly made of synthetic material and which extends over the entire useful length of said heatsinks 17 while providing a free annular space with the wall internal of the flange 11, on the one hand, and with the internal wall from the bottom 13 of the body 1, on the other hand.
  • a ferrule 18 which can be metallic or possibly made of synthetic material and which extends over the entire useful length of said heatsinks 17 while providing a free annular space with the wall internal of the flange 11, on the one hand, and with the internal wall from the bottom 13 of the body 1, on the other hand.
  • a seal 19 is preferably interposed between the ferrule 18 and the cylindrical wall 4 of the casing 2, this gasket that can only provide relative tightness.
  • a second ferrule 20 is engaged inside the heatsinks 16.
  • the second shell 20 extends over the entire useful length of the heatsinks 16 and it is supported in a turning 21 of a distributor cover 22 applied against the outer wall of the flange 11 described in the above.
  • a seal 23 is interposed between the cover distributor 22 and the flange 11 and fixing means and tightening 24, for example screws or bolts, ensure fixing the distributor cover 22 on the flange 11 and fixing the latter on the body 1.
  • the distributor cover 22 defines an inlet duct 25, preferably coaxial with the sleeve 12 and an annular collector 26 communicating with the annular space 27 delimited between the second ferrule 20 and the internal wall of the sleeve 12.
  • the manifold 26 leads to an outlet conduit 28.
  • the exchanger described above is mainly intended for allow heat exchange between incompatible fluids, that is to say between fluids not in any case can be brought into contact with each other like this can be the case between a fuel, for example kerosene and lubricating oil from parts of an engine or of a transmission when these two fluids are at very different temperatures, oil in front for example be cooled by the fuel supplied to the engine.
  • a fuel for example kerosene and lubricating oil from parts of an engine or of a transmission when these two fluids are at very different temperatures
  • oil in front for example be cooled by the fuel supplied to the engine.
  • the first fluid for example the fuel
  • the inlet conduit 25 along the arrow f 1 ; it is then led to pass into the space 27 delimited between the second ferrule 20 and the external surface of the sheath 12, space containing the dissipators 16.
  • This first fluid is then brought to the annular collector 26 then to the outlet duct 28.
  • the second fluid for example a lubricant
  • the second fluid is brought along the arrow f 2 to the inlet channel 7 which directs it to the annular recess 6 constituting a distributor which distributes this fluid and leads it inside the ferrule 18 in thus circulating outside the sheath 12 along the dissipators carried by this sheath.
  • the ferrule 18 may be free relative to the envelope 2 and to the heatsinks 16 or made integral with the casing 2 and remain free with respect to the heatsinks 16 or the ferrule 18 can be made integral with the dissipators 16 and be free relative to the envelope 2.
  • the ferrule 18 can also be deleted if the length of distributors 6 is small compared to the length of the heatsinks 16, which is illustrated for the heatsinks 16a in the embodiment described in the following with reference to FIG. 5.
  • the second ferrule 20 is provided to be able to slide compared to the heatsinks 16 or if it's rendered integral with them so that they can be moved relative in bar turning 21, this also in order to avoid constraints may arise due to differential expansions.
  • the sheath 12 is at thick wall, for example of the order of 2 to 3 mm, to reduce, or even eliminate, the risks of communication between the first and second fluid.
  • fig. 2 to 4 illustrate means constituting developments of the invention for obtaining thick and good conductive walls of the heat.
  • the sheath 12a of the bottle is consisting of two tubular parts 29, 30 spanning between they have an annular space 31.
  • the tubular parts 29, 30 are interconnected for the major part at least of their length by heat conducting parts 32, for example corrugated or otherwise shaped bands may be brazed or otherwise joined to said parts tubular 29, 30.
  • tubular parts are interconnected at least at their ends by rings 33, 34 brazed or welded to achieve an absolute seal.
  • the annular space 31 advantageously communicates with a venting channel 35 provided in the flange 11. In this way, if one of the tubular parts 29 or 30 has a leak, the first fluid F 1 or the second fluid F 2 enters the annular chamber 31 and is discharged through the venting channel 35, which allows immediate detection of the anomaly.
  • Fig. 4 shows that the heat conducting parts 32 can be produced by fins 32a which can be formed by molding at the same time as one of the tubular parts 29 or 30 to divide the annular space 31 into channels longitudinal 31a.
  • Fig. 5 illustrates a development of the invention allowing the production of high flow exchangers.
  • the sheath 12 produced as described with reference to fig. 1 has, at its open end, a crown 36 on which a wall sleeve 37 is centered thick, i.e. thickness similar to that of the sheath 12.
  • Annular seals 38 ensuring a seal absolute are interposed between the crown 36 and the sleeve 37 the free end of which forms a flange 39 provided with seals sealing rings 40 which bear on a span 41 of the end 1a of the body 1.
  • the seals 40 also provide absolute tightness.
  • the body 1 is provided with a removable bottom 3a fixed, for example bolted, on the body 1 with interposition of annular seals 42 creating an absolute seal.
  • the sheath 12 is provided as in the embodiment of FIG. 1 of heatsinks 16 and 17 and, similarly, the sleeve 37 is provided with heatsinks 16a, respectively 17a, extending on both sides.
  • the heatsinks 17, 17a bear against the walls internal 43 and external 44 of a part forming an annular duct 45 which extends from a distributor chamber 46 opening into the inlet duct 25 of the body 1.
  • seals 47 are arranged between the internal wall of the inlet duct 25 and the wall outside of the distribution chamber 46.
  • the seal created is not necessarily absolute.
  • the end of the body 1 forms an outlet chamber 48 fitted with an outlet nozzle 49.
  • At least one light 50 is provided between the chamber 46 and the annular duct 45 to communicate the chamber 48 with a room 51 communicating itself with the spaces annulars separating the inner 43 and outer 44 walls of the duct 45 from the outside of the sheath 12 and from the inside of the sleeve 37.
  • the room defining the chamber 46 and the walls 43, 44 of the annular duct 45 can be produced in different ways, for example metal or composite or plastic depending on the temperature of the fluids intended to bathe it.
  • this piece is made of a little material conductive of heat, which can be obtained as described in the following with reference to FIG. 7.
  • the drawing shows that the annular conduit 45 is open at its end opposite to the chamber 46 so that the fluid, which is supplied to the inlet conduit 25 along the arrow f 2 , is conducted inside the annular conduit 45, comes out of it at its open end as shown by the arrows, then is brought to the outlet chamber 48 in countercurrent by following the dissipators 17 and 17a.
  • the fluid flowing along arrow f 2 is the second fluid, for example a lubricant to be cooled by a first fluid, for example a fuel to be supplied to the combustion chambers of an engine.
  • the first fluid is brought into the embodiment of FIG. 5 to the input channel 7 according to the arrow f 1 .
  • This first fluid is directed, as indicated by the arrows, so that it circulates around the sleeve 37 along the heatsinks 16a against the current of the first fluid flowing along the heatsinks 17a.
  • the first fluid is thus brought to a passage 52 provided in the bottom 3a and leading to a median mouth 53 opening to the interior of the bottle formed by the sheath 12, that is to say inside the shell 20 enveloped by the heatsinks 16 attached to said sheath 12.
  • the first fluid is thus brought to the bottom 13 of the bottle which directs it inside the shell 20; this first fluid then circulates along the dissipators 16 against the external wall of the sheath 12, that is to say that the first fluid then circulates against the current with respect to the second fluid circulating along the arrow f 2 along the dissipators 17 which are carried by the external wall of the sheath 12.
  • the first fluid is finally brought into a collector 54 (fig. 5 and 6) delimited by the removable bottom 3a and is thus directed to the outlet channel 8 of the body 1.
  • the first fluid circulates always outside the sleeve 37 and inside the sleeve 12 so that an absolute seal is only necessary between these two parts, that is to say at the level of annular seals 38 and also between the sleeve 37 and the scope 41 of the end of the body, which is ensured by the annular seals 40.
  • the second fluid on its side only circulates inside of the sleeve 37 and on the outside of the sheath 12.
  • the risks of communication are thus extremely reduced since due either to a possible porosity of the sleeve 37 or of the sheath 12, or to an accidental perforation which may be due the presence of a foreign body.
  • the flange 39a of the sleeve 37 is clamped between complementary flanges 56 of the body 1 and 57 of the end la of this body, that is to say using, for the maintenance of sleeve 37, the same means as that illustrated in FIG. 1 for maintaining the sheath 12.
  • seals 14 and 23 are provided and applied against the flange 39a.
  • the only possibility of leakage of the fluid F 1 would be established between the flange 39a and the flange 56, that is to say towards the outside of the body 1 of the exchanger and likewise the only possibility of leakage of the fluid F 2 would be established between the flange 39a and the flange 57, that is to say also towards the outside of the exchanger.
  • Figs. 7 and 8 illustrate an embodiment making it possible to reduce this heat exchange to a very low value.
  • the part delimiting the annular walls 44 and 45 is formed so that said walls are formed respectively by two concentric tubes 44a, 44b and 45a, 45b kept apart by spacers 58.
  • At least one of the tubes 44a-45b has one or more openings 59 so that fluid F 2 , flowing inside the annular duct 45 or outside this duct, fills the space separating the concentric tubes 44a, 44b, on the one hand, and 45a, 45b, on the other hand.
  • the openings 59 are provided small so that the circulation of the fluid contained between said concentric tubes either reduced or even zero; in this way it is the fluid itself which forms a thermal barrier by limiting conduction.
  • Figs. 7 and 8 also show an embodiment allowing one and / or the other fluid F 1 , F 2 to escape outside the exchanger when the sleeve 37 is mounted as described with reference to FIG. 5, that is to say when it is supported on the crown 36 of the sleeve 12 by means of the seals 38 and that it is also supported on the bearing surface 41 by means of the seals 40.
  • the sleeve 37 which is relatively thick for the same reason that the sheath 12 also has a bar longitudinal 60 pierced with a channel 61 communicating with conduits 62, 63 opening respectively between the seals 40, on the one hand, and between the seals 38, on the other hand.
  • the duct is disposed opposite a discharge channel 64 provided in the end 1a of the body 1, in this way a leakage of fluid F 1 would occur in the event of a failure of one of the seals 38 and this fluid would be duct by the conduits 63, 62 towards the channel 64. Likewise, a leakage of fluid F 2 would be due to an imperfection of the other seal 38 or of one of the seals 40 and, in this case, also this fluid would be brought to the drainage channel 64.
  • Fig. 10 illustrates a development of the invention by which the risk of leakage by porosity or by the action of milling that can be exerted by impurities is eliminated.
  • the sheath 12, as well as the sleeve 37 are made to present two walls 12a, 12b, respectively 37a, 37b, delimiting annular chambers 65, 66 in which are arranged elements of thermal transmission 67, 68.
  • Such elements can be formed by fins, by coiled bands, by strips cut like disruptors or by other elements ensuring good thermal transmission.
  • the transmission elements 67, 68 are preferably brazed or are an integral part of one of the constituent walls sleeve 12 or sleeve 37.
  • the annular chambers 65, 66 are also connected between them by a conduit 63 as described with reference to the fig. 7 and a conduit 64 is provided in the flange 39a for communicate with the chamber 66 of the sleeve 37 or with the chamber 65 of the sleeve 12 in the case of the realization of the fig. 1 which does not include the sleeve 37.
  • Fig. 11 illustrates a simplified variant of the embodiments according to fig. 5 or 9.
  • the same reference numbers designate the same organs as those described in the others embodiments.
  • the body 1 is produced so as to be connected with a seal possibly relative, directly at one end of the shell 20 surrounded by the dissipators 16.
  • a single tube 43a replaces the tubes 43, 44 of FIGS. 5 and 9 and this tube 43a is connected by the seal 47, the sealing of which can be relative to the mouth 25 of the end 1a of the body 1.
  • the tube 43a forms a partition between the dissipators 17 and 17a of the external face of the sheath 12 and of the internal face of the sleeve 37 by delimiting a double circuit between said sheath and said sleeve.
  • One of the fluids can be caused to flow from the mouth 25 by following the arrows F 2 illustrated in solid lines to be led to the outlet conduit 49, or this same fluid can be caused to circulate from the conduit for exit 49 following the arrows illustrated in dotted lines, that is to say in the opposite direction.
  • the other fluid can also flow in one direction or the other according to the arrows F 1 . It is thus possible to organize circulations in the same direction, against the current or with crossed flows.
  • the envelope 1, the sleeve 37, the part delimiting the annular duct 45, the sleeve 12, the ferrule 20 as well as the organs described, which associated with them, have, in section, an annular shape.
  • Fig. 12 illustrates that other shapes in section can be carried out while implementing all the characteristics described in the foregoing.
  • fig. 12 illustrates that the exchanger, in its realization illustrated in fig. 5, can be conformed to shape of an arc to make it possible to adapt to a generally cylindrical carrier member like this is the case of the reactor walls.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP93402169A 1993-07-06 1993-09-07 Echangeur annulaire de sécurité pour fluides incompatibles Expired - Lifetime EP0633442B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US08/212,570 US5542467A (en) 1993-07-06 1994-03-11 Safety annular heat exchanger for incompatible fluids
CA002119408A CA2119408A1 (en) 1993-07-06 1994-03-18 Safety annular heat exchanger for incompatible fluids
US08/628,811 US5649589A (en) 1993-07-06 1996-04-05 Safety annular heat exchanger for incompatible fluids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308254 1993-07-06
FR9308254A FR2707380B1 (fr) 1993-07-06 1993-07-06 Echangeur annulaire de sécurité pour fluides incompatibles.

Publications (2)

Publication Number Publication Date
EP0633442A1 EP0633442A1 (fr) 1995-01-11
EP0633442B1 true EP0633442B1 (fr) 1998-01-21

Family

ID=9448951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402169A Expired - Lifetime EP0633442B1 (fr) 1993-07-06 1993-09-07 Echangeur annulaire de sécurité pour fluides incompatibles

Country Status (7)

Country Link
EP (1) EP0633442B1 (da)
AT (1) ATE162615T1 (da)
CA (1) CA2119408A1 (da)
DE (1) DE69316603T2 (da)
DK (1) DK0633442T3 (da)
ES (1) ES2114017T3 (da)
FR (1) FR2707380B1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328628A1 (de) * 2003-06-26 2005-01-20 Volkswagen Ag Vorrichtung und Verfahren zur Befeuchtung eines Gasstroms
DE202004003131U1 (de) * 2004-03-01 2004-05-19 Albert Handtmann Metallgusswerk Gmbh & Co. Kg Mehrteiliger Abgaswärmetauscher aus Aluminiumdruckguß
DE202007016275U1 (de) * 2007-11-20 2009-05-20 Consarctic Entwicklungs Und Handels Gmbh Wärmetauscher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120868A (en) * 1959-09-28 1964-02-11 James S Ballantine Heat exchanger
US3910347A (en) * 1966-06-13 1975-10-07 Stone & Webster Eng Corp Cooling apparatus and process
DE2046548B2 (de) * 1970-09-22 1973-02-15 Interatom Internationale Atomreaktor bau GmbH. 5060 Bensberg Waermetauscher fuer natriumgekuehlte kernreaktoren
AU510518B2 (en) * 1976-04-08 1980-07-03 Heat Transfer Pty. Ltd. Seals for concentrically arranged tubes of heat exchangers
US4671351A (en) * 1985-07-17 1987-06-09 Vertech Treatment Systems, Inc. Fluid treatment apparatus and heat exchanger
WO1993003318A1 (en) * 1991-07-31 1993-02-18 Ronald Albert Pain Bayonet heat exchanger

Also Published As

Publication number Publication date
DK0633442T3 (da) 1998-09-14
FR2707380B1 (fr) 1995-09-22
ATE162615T1 (de) 1998-02-15
EP0633442A1 (fr) 1995-01-11
CA2119408A1 (en) 1995-01-07
DE69316603D1 (de) 1998-02-26
DE69316603T2 (de) 1998-04-30
FR2707380A1 (fr) 1995-01-13
ES2114017T3 (es) 1998-05-16

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