FR2494420A3 - Heat exchanger assembly for absorption refrigerator - has profiled trunk with inner and outer radial ribs supporting inner and outer tubes - Google Patents
Heat exchanger assembly for absorption refrigerator - has profiled trunk with inner and outer radial ribs supporting inner and outer tubes Download PDFInfo
- Publication number
- FR2494420A3 FR2494420A3 FR8024932A FR8024932A FR2494420A3 FR 2494420 A3 FR2494420 A3 FR 2494420A3 FR 8024932 A FR8024932 A FR 8024932A FR 8024932 A FR8024932 A FR 8024932A FR 2494420 A3 FR2494420 A3 FR 2494420A3
- Authority
- FR
- France
- Prior art keywords
- profile
- ribs
- absorption refrigerator
- tube
- profiled
- 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.)
- Granted
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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
- 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
- F28D7/106—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 consisting of two coaxial conduits or modules of two coaxial conduits
-
- 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
- F28D7/103—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 consisting of more than two coaxial conduits or modules of more than two coaxial conduits
-
- 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
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
- F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element
Landscapes
- 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)
Abstract
Description
L'invention se rapporte à un dispositif favorisant lté- change de chaleur, plus particulièrement mais non exclusivement dans un agrégat de réfrigérateur à absorption et à l'agrégat pourvu de ce dispositif. The invention relates to a device for promoting heat exchange, more particularly but not exclusively in an absorption refrigerator aggregate and the aggregate provided with this device.
De manière connue ces agrégats consistent en un circuit en boucle sur lequel sont successivement montés un bouilleur, un rectificateur ou séparateur d'eau, un condenseur, un évaporateur, un absorbeur et un réservoir, ainsi que, entre certaines des conduites desservant ces appareils, des échangeurs de chaleur. In known manner these aggregates consist of a loop circuit on which are successively mounted a boiler, a rectifier or water separator, a condenser, an evaporator, an absorber and a reservoir, and, between some of the conduits serving these devices, heat exchangers.
Le principe de fonctionnement de ces agrégats repose sur la théorie des mélanges entre des corps présentant certaines affinités. Cssest pourquoi avec un gaz, tel l'hydro génie, est "introduit" un "mélange" formé, au moins, d'un fluide frigorigène, tel l'ammoniac, et d'un agent d'absorption, tel l'eau. The operating principle of these aggregates is based on the theory of mixtures between bodies with certain affinities. This is why with a gas, such as hydro genius, is "introduced" a "mixture" formed, at least, of a refrigerant, such as ammonia, and an absorption agent, such as water.
Issue du réservoir, une solution riche en fluide frigorigène parvient au bouilleur qui est constitue d'un tube relié à une source de chaleur, telle une résistance glec- trique ou un brdleur. From the tank, a solution rich in refrigerant reaches the boiler which is constituted by a tube connected to a heat source, such as a resistance filter or a burner.
La chaleur ainsi communiquée à la solution provoque un dégagement de bulles gazeuses formées à la fois de fluide frigorigène et d'agent d'absorption et élève cette solution
Jusqu'en haut d'un tube dénommé pompe.The heat thus imparted to the solution causes a release of gaseous bubbles formed of both refrigerant and absorption agent and raises this solution.
Up to the top of a tube called pump.
A la partie supérieure de la pompe, les bulles gazeuses se séparent de la solution ainsi appauvrie qui,quant à elle, retourne directement à la partie supérieure de l'absorbeur comprenant, de préférence, plusieurs étages sur lesquels elle ruisselle avant de revenir au réservoir. At the upper part of the pump, the gaseous bubbles separate from the solution thus depleted, which, in turn, returns directly to the upper part of the absorber, preferably comprising several stages on which it flows before returning to the reservoir .
Les bulles gazeuses séparées comme indique plus haut, s'élèvent jusqu'au rectificateur ou séparateur d'eau, qui est construit de manière telle que seul l'agent d'absorption s'y condense et retourne aussitôt, via la pompe, jus- qu'à l'absorbeur. The gaseous bubbles separated as indicated above, rise to the rectifier or water separator, which is constructed in such a way that only the absorption agent condenses therein and immediately returns, via the pump, up to than the absorber.
De ce fait, pratiquement seules les vapeurs de fluide frigorigène poursuivent leur ascension jusqu'au condenseur. As a result, virtually only the refrigerant vapors continue to rise to the condenser.
Celui-ci, formé par un tube refroidi par une circulation d'air entre les ailettes qu'il porte, condense le fluide frigorigène. The latter, formed by a tube cooled by a flow of air between the fins that it carries, condenses the refrigerant.
Ce condensat arrive à la partie supérieure de l'évapo- rateur comprenant, de préférence, plusieurs étages sur lesquels il ruisselle, afin de s'évaporer en couches minces et de se diffuser dans le gaz. This condensate arrives at the upper part of the evaporator, preferably comprising several stages on which it flows, in order to evaporate in thin layers and to diffuse into the gas.
Après sa sortie de ltévaporateur, où il a produit le froid recherché, le mélange de gaz et de vapeurs de fluide frigorigène peut aller à la partie supérieure de l'absorbeur pour y rencontrer la solution pauvre qui y retourne et dans laquelle, pendant que le gaz se libérera pour retourner à l'évaporateur le fluide frigorigène se dissoudra pour réenrichir la solution en vue d'un nouveau cycle. After leaving the evaporator, where it has produced the desired cold, the mixture of gases and vapors of refrigerant can go to the upper part of the absorber to meet the poor solution which returns there and in which, while the gas will be released to return to the evaporator the refrigerant will dissolve to re-enrich the solution for a new cycle.
C'est en effet, cette solution enrichie qui, après stetre rassemblée à la partie inférieure du réservoir de l'absorbeur, ira au bouilleur. It is indeed, this enriched solution which, after being stowed together at the lower part of the absorber tank, will go to the boiler.
Dans ce type-d'agrégat, il est connu de favoriser les échanges de chaleur entre les fluides que l'on fait circuler à contre-courant, et ce
- tant, entre les liquides que sont, d'une part, la solution riche qui, relativement froide, circule de l'ab- sorbeur jusqu'au bouilleur, et, d'autre part, la solution pauvre qui, sortant du bouilleur, est relativement chaude lorsqu'elle regagne l'absorbeure
- que, entre d'une part, les gaz que sont le gaz riche en ammoniac, qui sort très froid de ltévaporateur et le gaz pauvre en ammoniac libéré dans l'absorbeur, et qui relativement chaud retourne à 1sévaporateur, et d'autre part
le liquide sortant du condenseur.In this type of aggregate, it is known to promote the exchange of heat between the fluids that are circulated against the current, and this
between the liquids, on the one hand, the rich solution which, relatively cold, circulates from the absorber to the boiler, and, on the other hand, the poor solution which, coming out of the boiler, is relatively warm when she returns to the absorbent
- that, on the one hand, the gases that are the gas rich in ammonia, which leaves very cold evaporator and the ammonia-poor gas released in the absorber, and which relatively hot returns to the evaporator, and secondly
the liquid coming out of the condenser.
L'invention se rapporte plus particulièrement, mais non exclusivement, à un dispositif assurant ce deuxième type d'échange. The invention relates more particularly, but not exclusively, to a device providing this second type of exchange.
En effet, l'accentuation du refroidissement du gaz pauvre et du condensat, avant leur entrée dans l'évapora- teur, augmente la production de froid par unité de masse de fluide frigorigène et permet donc de réduire, à puissance frigorifique égale, le débit masse du fluide frigo rigène. In fact, the increased cooling of the lean gas and the condensate, before entering the evaporator, increases the production of refrigeration per unit mass of refrigerant and thus makes it possible to reduce, at equal cooling capacity, the flow rate mass of refrigerant fluid rigene.
Par ailleurs, l'absorption de l'ammoniac du gaz riche pourra avantageusement se produire à une température nette ment supérieure à la température d'évaporation. Moreover, the absorption of ammonia from the rich gas may advantageously occur at a temperature clearly above the evaporation temperature.
I1 s'en suit une amélioration du rendement directement en rapport avec la qualité de l'échange obtenu. This results in an improvement of the yield directly related to the quality of the exchange obtained.
Notamment pour les échanges thermiques entre les gaz riche et pauvre, qui, en sens inverses, suivent des parcours identiques, il est connu d'utiliser un échangeur dit à double tube, c'est-à-dire formé de deux tubes placés l'un dans l'autre pour y faire passer, en sens inverses, l'un des gaz dans le tube interne, et l'autre dans l'intervalle entre les deux tubes. Pour le condensat, le problème de la réalisation d'un échangeur à triple tube n'ayant, à ce jour, pas été résolu, sa conduite est généralement simplement reliée par l'une de ses génératrices, à l'échangeur entre gaz, ce qui offre évidemment une moins grande surface d'échange. In particular for heat exchanges between rich and poor gases, which, in opposite directions, follow identical paths, it is known to use a so-called double tube exchanger, that is to say formed of two tubes placed the one in the other to pass, in opposite directions, one of the gases in the inner tube, and the other in the gap between the two tubes. For the condensate, the problem of the realization of a triple tube exchanger has not, so far, been solved, its conduct is usually simply connected by one of its generators, the exchanger between gas, this which obviously offers a smaller trading area.
Pour améliorer quelque peu la qualité de l'échange entre le condensat et le gaz riche, la conduite est généralement soudée au long du tube externe de ltéchangeur Pour tenter également d'améliorer ltéchange entre les gaz riche et pauvre, il est aussi connu de fixer élastique- ment aux faces internes et/ou externes des tubes de ltéchan- geur des petites feuilles d'acier à ressort qui sont rou liées et dans lesquelles a été exécute un poinçonnage pro
Jetant sensiblement perpendiculairement à la surface des dites feuilles, une multitude de dents augmentant la surface de contact avec les fluides.To improve somewhat the quality of the exchange between the condensate and the rich gas, the pipe is generally welded along the outer tube of the exchanger To also try to improve the exchange between rich and poor gas, it is also known to fix elastically to the internal and / or external faces of the tubes of the exchanger of the small spring steel sheets which are connected and in which a professional punching has been carried out
Throwing substantially perpendicular to the surface of said sheets, a multitude of teeth increasing the contact surface with the fluids.
Les inconvénients de ces dispositifs viennent principalement de ce qu'ils sont nécessairement réalisés en acier à ressort lequel coûte très cher, est difficile à usiner, est moins bon conducteur que, par exemple, l'aluminium. Par ailleurs, le montage de ces dispositifs est difficile à aliser et, les dents étant réalisées par poinçonnage de la feuille elle-même, pour maintenir au dispositif une certaine r8sistance, les dents doivent être de dimension tries limitée comme l'est de ce fait l'augmentation de la surface d'échange et donc du rendement. The disadvantages of these devices come mainly from the fact that they are necessarily made of spring steel which is very expensive, is difficult to machine, is less good conductor than, for example, aluminum. Moreover, the mounting of these devices is difficult to align and, the teeth being made by punching the sheet itself, to maintain the device a certain resistance, the teeth must be of limited size as is therefore the increase of the exchange surface and therefore of the yield.
Un résultat que l'invention vise à obtenir est, plus particulièrement mais non exclusivement, dans un agrégat de réfrigérateur à absorption, un dispositif qui offre une très grande surface d'échangea une excellente con
est ductibilité et qui/néanmoins peu coûteux en matière et en usinage.A result that the invention aims to obtain is, more particularly, but not exclusively, in an absorption refrigerator aggregate, a device that offers a very large surface area exchanged an excellent con
is ductile and which / nevertheless inexpensive in material and machining.
A cet effet, l'invention a pour objet un dispositif du type cité plus haut, notamment caractérisé en ce qu'il est formé d'au moins un tronçon de profilé, en matériau excellent conducteur de la chaleur et qui présente sur au moins 1'une de ses faces interne et externe des nervures longitudinales. For this purpose, the subject of the invention is a device of the type mentioned above, in particular characterized in that it is formed of at least one section of profile, made of an excellent material which conducts heat and which has at least 1 one of its inner and outer faces longitudinal ribs.
Elle a également pour objet l'agrégat de rerigéra- teur pourvu de ce dispositif. It also relates to the aggregate of rerigerator provided with this device.
L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif, en regard du dessin ci- > nnexé qui représente
- Fig. 1 : en coupe axiale partielle, un échangeur à
double tette pourvu de ce dispositif,
- Fig. 2 et 3 : des variantes de réalisation de cet 4 changeur,
- Fig. 4 : en coupe axiale partielle, un échangeur à
triple tube pourvu de ce dispositif, - Fig. 5 à 8 : w vu en coupe radiale, des variantes de
réalisation du dispositif,
- Fig. 9 : une vue externe d'un tronçon du dispositif.The invention will be better understood from the following description given by way of non-limiting example, with reference to the attached drawing which represents
- Fig. 1: in partial axial section, a heat exchanger
double tet provided with this device,
- Fig. 2 and 3: variant embodiments of this changer 4,
- Fig. 4: in partial axial section, a heat exchanger
triple tube provided with this device, - Fig. 5 to 8: w seen in radial section, variants of
realization of the device,
- Fig. 9: an external view of a section of the device.
L'échangeur 1, 2 ou 3, à double tuBe représenté aux figures 1, 2 et 3 est raccordé au circuit 4a, 4b de l'agrégat (non représenté). The exchanger 1, 2 or 3, double tuBe shown in Figures 1, 2 and 3 is connected to the circuit 4a, 4b of the aggregate (not shown).
Il abrite deux fluides 5, 6 circulant à contre-courant tels par exemple, dans le cas d'un échangeur entre gaz, un gaz pauvre 5, relativement chaud, circulant de préféren- ce dans la conduite interne 7, et un gaz riche 6, très froid, circulant donc dans le conduit peripherique 8 qui est dé- limité par les parois tubulaires interne 9 et externe 10*
La préférence évoquée ci-dessus est dictée par la possi bilié qu'elle offre alors d'accentuer le refroidissement d'une autre conduite telle celle (non représentée) abritant le condensat en accolant cette conduite à la face externe de l'échangeur.It houses two fluids 5, 6 circulating in counter-current such as, for example, in the case of a gas exchanger, a relatively hot poor gas 5, preferably circulating in the inner pipe 7, and a rich gas 6 very cold, thus circulating in the peripheral duct 8 which is delimited by the inner tubular walls 9 and outer 10 *
The preference mentioned above is dictated by the possibility that it then offers to accentuate the cooling of another pipe such as that (not shown) housing the condensate by attaching this pipe to the outer face of the exchanger.
Selon une caractéristique essentielle de l'invention, dans cet échangeur 1, 2 ou 3 est logé un dispositif, favo risant l'échange thermique, lui-meme form d'au moins un tronçon de profilé 11, 12, 13, 14 ou 15, en matériau excellent conducteur de la chaleur, tel l'aluminium et qui présente, longitudinalement, et ce, sur au moins l > une de ces faces interne et externe, des nervures de préférence radiales, fines et très hautes. According to an essential characteristic of the invention, in this exchanger 1, 2 or 3 is housed a device, favoring the heat exchange, itself formed of at least one profile section 11, 12, 13, 14 or 15. made of an excellent material which conducts heat, such as aluminum, and which has, longitudinally, and on at least one of these inner and outer faces, ribs preferably radial, thin and very high.
Ce profilé comprend de préférence une ame 16, 17, 18 delimitant directement au moins un conduit 7, 8. il pourra s'agir d'une âme 16 de forme tubulaire fermée (fig 5 à 7) ou d'âmes 17, 18 ne formant qu'une fraction angulaire de conduit tubulaire (fig 8) et par exemple, semi-circulaire. This profile preferably comprises a core 16, 17, 18 directly delimiting at least one conduit 7, 8. It may be a core 16 of closed tubular shape (FIGS. 5 to 7) or of cores 17, 18 forming an angular fraction of tubular conduit (Fig 8) and for example, semi-circular.
Les nervures internes 19 et/ou externes 20, plus ou moins serres, sont régulièrement réparties tout autour du conduit (fig 5 et 6) ou ne sont prévues que sur une fraction angulaire des faces interne 21 et/ou externe 22 de l'Ame (fig 7 et t) et ce, notamment, selon la place occupée par les fluides participant à l'échange. The inner and / or outer ribs 19, more or less green, are evenly distributed around the duct (FIGS. 5 and 6) or are provided only on an angular fraction of the inner and outer faces 21 and 22 of the core. (Fig 7 and t) and this, in particular, depending on the place occupied by the fluids involved in the exchange.
Les nervures internes 19 et/ou externes 20 pourront être interrompues avant l'extrémité de l'âme 16, afin de permettre un raccordement aisé au circuit de l'agrégat soit par emboitement direct du circuit 4b sur la face interne 21 (fig 1) ou externe 22 (fig 2) de l'âme 16, soit par l'intermédiaire d'un manchon 23 (fig 3). The internal ribs 19 and / or outer 20 may be interrupted before the end of the core 16, to allow easy connection to the circuit of the aggregate is by direct interlocking of the circuit 4b on the inner face 21 (fig 1) or external 22 (Figure 2) of the core 16, or via a sleeve 23 (Figure 3).
Par ses nervures qui stétendent de l'âme 16 jusqu'à un tube en vis à vis, tel le tube externe 10, le dispositif est automatiquement positionne par rapport à ce tube 10. By its ribs which extend from the core 16 to a tube opposite, such as the outer tube 10, the device is automatically positioned relative to this tube 10.
Du fait que, de même manière les nervures internes 19 peuvent centrer un troisième tube 24, un échangeur à triple tube peut aisément être réalisée Le tube central permettra par exemple, dwy faire circuler le oondensat 25, pendant que le gaz pauvre 5, relativement chaud, circulera dans le même sens, dans le conduit externe 8 et que, le gaz riche 6 très froid circulera en sens oppose dans un conduit intermédiaire.7Zette disposition lui permet en effet, d'accentuer le refroidissement des deux autres fluides à la fois. Since, in the same way, the internal ribs 19 can center a third tube 24, a triple tube exchanger can easily be made. The central tube will, for example, make it possible to circulate the condensate 25 while the relatively poor gas 5 is hot. will circulate in the same direction, in the outer conduit 8 and that, the very cold rich gas 6 will circulate in opposite directions in an intermediate conduit.7This arrangement allows him to accentuate the cooling of the other two fluids at a time.
Pour assurer le coincement énergique du tube central 24, l'extrémité longitudinale 26 des nervures internes 19 peut volontairement subir une déformation 27. To ensure the energetic jamming of the central tube 24, the longitudinal end 26 of the internal ribs 19 may voluntarily undergo a deformation 27.
Dans une variante de réalisation-(fig 9) au moins les nervures externes peuvent être interrompues de place en place pour former des palettes 28 judicieusement croquées de manière à canaliser et/ou freiner les fluides. In an alternative embodiment (FIG. 9), at least the external ribs can be interrupted from place to place to form palettes 28 that are judiciously cut in such a way as to channel and / or brake the fluids.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024932A FR2494420A3 (en) | 1980-11-20 | 1980-11-20 | Heat exchanger assembly for absorption refrigerator - has profiled trunk with inner and outer radial ribs supporting inner and outer tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024932A FR2494420A3 (en) | 1980-11-20 | 1980-11-20 | Heat exchanger assembly for absorption refrigerator - has profiled trunk with inner and outer radial ribs supporting inner and outer tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2494420A3 true FR2494420A3 (en) | 1982-05-21 |
| FR2494420B3 FR2494420B3 (en) | 1982-11-26 |
Family
ID=9248294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8024932A Granted FR2494420A3 (en) | 1980-11-20 | 1980-11-20 | Heat exchanger assembly for absorption refrigerator - has profiled trunk with inner and outer radial ribs supporting inner and outer tubes |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2494420A3 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086470A1 (en) * | 1982-02-15 | 1983-08-24 | Wilhelm Dr.-Ing. Vox | Heat pump condensor with three specifically co-axial tubular elements |
| FR2552216A1 (en) * | 1983-09-21 | 1985-03-22 | Onera (Off Nat Aerospatiale) | Improvements made to heat exchanger pipes and to exchangers made with such pipes |
| EP0138677A2 (en) * | 1983-09-21 | 1985-04-24 | Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.) | Heat-exchanger tubes, heat-exchangers provided therewith and gas-turbine plants comprising such a heat-exchanger |
| WO2004001313A1 (en) * | 2002-06-24 | 2003-12-31 | Abb Research Ltd | Heat exchanger |
| BE1019822A3 (en) * | 2011-02-16 | 2013-01-08 | Atlas Copco Airpower Nv | COMPOSITE PIPE FOR A HEAT EXCHANGER AND ACCESSORIES APPLIED THEREOF. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE502657A (en) * |
-
1980
- 1980-11-20 FR FR8024932A patent/FR2494420A3/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE502657A (en) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086470A1 (en) * | 1982-02-15 | 1983-08-24 | Wilhelm Dr.-Ing. Vox | Heat pump condensor with three specifically co-axial tubular elements |
| FR2552216A1 (en) * | 1983-09-21 | 1985-03-22 | Onera (Off Nat Aerospatiale) | Improvements made to heat exchanger pipes and to exchangers made with such pipes |
| EP0138677A2 (en) * | 1983-09-21 | 1985-04-24 | Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.) | Heat-exchanger tubes, heat-exchangers provided therewith and gas-turbine plants comprising such a heat-exchanger |
| EP0138677A3 (en) * | 1983-09-21 | 1985-05-22 | Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.) | Heat-exchanger tubes, heat-exchangers provided therewith and gas-turbine plants comprising such a heat-exchanger |
| WO2004001313A1 (en) * | 2002-06-24 | 2003-12-31 | Abb Research Ltd | Heat exchanger |
| EP1376038A1 (en) * | 2002-06-24 | 2004-01-02 | Abb Research Ltd. | Heat exchanger |
| BE1019822A3 (en) * | 2011-02-16 | 2013-01-08 | Atlas Copco Airpower Nv | COMPOSITE PIPE FOR A HEAT EXCHANGER AND ACCESSORIES APPLIED THEREOF. |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2494420B3 (en) | 1982-11-26 |
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