EP2204628A1 - Échangeur de chaleur en plastique - Google Patents

Échangeur de chaleur en plastique Download PDF

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Publication number
EP2204628A1
EP2204628A1 EP09177142A EP09177142A EP2204628A1 EP 2204628 A1 EP2204628 A1 EP 2204628A1 EP 09177142 A EP09177142 A EP 09177142A EP 09177142 A EP09177142 A EP 09177142A EP 2204628 A1 EP2204628 A1 EP 2204628A1
Authority
EP
European Patent Office
Prior art keywords
plastic
outlet
inlet
heat exchanger
section
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
Application number
EP09177142A
Other languages
German (de)
English (en)
Other versions
EP2204628B1 (fr
Inventor
Bobbye K. Baylis
Paul D. Daly
Ian R. Mclean
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2204628A1 publication Critical patent/EP2204628A1/fr
Application granted granted Critical
Publication of EP2204628B1 publication Critical patent/EP2204628B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • 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
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators

Definitions

  • the present invention relates to a plastic heat exchanger, in particular for vehicle applications.
  • a heat exchanger usually has an inlet container having an inlet for a first fluid and enclosing an inlet chamber. Furthermore, an outlet container is provided which has an outlet for the first fluid and encloses an outlet chamber.
  • the plastic heat exchanger also has a plurality of plastic pipes which are sealed to the inlet tank and to the outlet tank. The plastic tubes connect the inlet chamber communicating with the outlet chamber and are flowed around in the operation of the plastic heat exchanger by a second fluid.
  • Plastic heat exchangers are characterized by lightweight construction and low manufacturing costs compared to conventional metal heat exchangers. However, the plastic pipes have a reduced coefficient of thermal conductivity compared to metal pipes. In order to achieve a heat transfer that is comparable to that of a metal heat exchanger, a plastic heat exchanger must be sized larger.
  • the present invention addresses the problem of providing an improved embodiment of a plastic heat exchanger, which is characterized in particular by the fact that it enables improved heat transfer, which can be used in particular to make the plastic heat exchanger smaller or more compact.
  • the invention is based on the general idea of equipping at least some of the plastic pipes in at least one longitudinal section with annular regions which follow one another in the pipe longitudinal direction with varying cross sections.
  • the annular regions generate turbulences during the operation of the heat exchanger due to the varying cross sections, which leads to transverse flows or to a cross-mixing of the first fluid flowing in the plastic pipes.
  • the heat transfer between the respective plastic pipe and the first fluid can be significantly improved.
  • the ability to transfer heat between the first fluid and the second fluid can be increased throughout the heat exchanger, whereby the heat exchanger can be built smaller or more compact with the same performance.
  • the plastic pipes do not have to be provided over their entire length with the varying cross-sections, but only in longitudinal sections or sections of the plastic pipes, which may be relatively short compared to the total length of the respective plastic pipes.
  • the longitudinal sections in which the annular regions follow one another with varying cross-sections may, for example, be designed in the manner of a bellows or in the manner of a corrugated tube. As a result, even in a comparatively small longitudinal section, a large number of such annular regions with a varying cross section can be realized in order to produce the desired disturbance of the boundary layer flow.
  • the longitudinal sections which have the varying annular regions can be produced by compression, in particular during the production of the plastic pipes.
  • plastic pipes can be extruded particularly inexpensive. In a not yet completely cured state, the plastic can then be particularly easily compressed to form said longitudinal sections.
  • the plastic pipes can each have an inlet section connected to the inlet tank, an outlet section connected to the outlet tank and an intermediate section connecting the inlet section to the outlet section.
  • the wall thickness of the plastic pipes in the middle section is smaller than in the inlet section or as in the outlet section.
  • a minimum wall thickness is required.
  • the plastic pipes have only this minimum wall thickness in the inlet section and in the outlet section. In the intermediate section, the wall thickness is reduced. In this way, the heat transfer through the plastic pipes and thus between the two fluids can be improved.
  • a plastic heat exchanger 1 comprises an inlet tank 2, an outlet tank 3 and a plurality of plastic pipes 4.
  • a plastic heat exchanger 1 comprises an inlet tank 2, an outlet tank 3 and a plurality of plastic pipes 4.
  • inlet tank 2 an outlet tank 3
  • plastic pipes 4 a plurality of plastic pipes 4.
  • FIG Fig. 1 only four such plastic tubes 4 are shown. It is clear that significantly more such plastic tubes 4 or more groups of such plastic tubes 4 can be used.
  • the heat exchanger 1 is particularly suitable for automotive applications. For example, it may be used in an engine cooling circuit as a main radiator to cool the coolant of the engine cooling circuit with an air flow. Likewise, the heat exchanger 1 may be associated with an air conditioning or an oil circuit of the vehicle. In a preferred application, the heat exchanger 1 can be used as a charge air cooler in a supercharged internal combustion engine.
  • the inlet container 2 has an inlet 5 for a first fluid, which may be a gas or a liquid.
  • the inlet container 2 encloses an inlet chamber 6.
  • the outlet container 3 has an outlet 7, through which the first fluid can escape.
  • the outlet container 3 encloses an outlet chamber 8.
  • the plastic pipes 4 are tightly connected on the one hand to the inlet container 2 and on the other hand to the outlet container 3.
  • the inlet container 2 and the outlet container 3 may also be made of plastic.
  • the plastic tubes 4 are then tightly connected to the respective container 2, 3 by means of welded joints.
  • the plastic pipes 4 realize a communicating connection between the inlet chamber 6 and the outlet chamber 8.
  • the first fluid can flow from the inlet chamber 6 through the plastic pipes 4 into the outlet chamber 8 during operation of the heat exchanger 1.
  • the plastic pipes 4 are flowed around by a second fluid, which may be a gas or a liquid.
  • the plastic tubes 4 preferably have a circular cross section and are in the example of the Fig. 1 each designed in a straight line. In principle, however, other circular cross-sections and / or a curved design are conceivable. Accordingly, the tube longitudinal direction is either straight or curved.
  • the longitudinal sections 9 are positioned along the individual plastic pipes 4 so that they are offset from each other in adjacent plastic pipes 4 in the pipe longitudinal direction.
  • the individual plastic pipes 4 can be packed or arranged closer together, whereby the heat exchanger 1 can be constructed more compact overall.
  • adjacent tubes 4 can thereby be arranged relatively close to one another with respect to their longitudinal central axes 17, as a result of which a distance 18 can be minimized.
  • an offset 10 between the longitudinal sections 9 of adjacent plastic pipes 4 is slightly, z. Ex. 10-20% larger dimensioned as a length 11 of the longitudinal sections. 9
  • each plastic tube 4 is provided with only one such longitudinal section 9.
  • the respective longitudinal section 9 can preferably be designed in the manner of a bellows or corrugated tube.
  • the annular areas are in the Fig. 2 to 6 indicated by braces and denoted by 13.
  • these annular regions 13 generate in the tube longitudinal direction, which in the Fig. 2 to 6 indicated by an arrow 14, varying cross sections.
  • the sequence of varying cross-sections disturbs the boundary layer and creates turbulence to improve mixing in the first fluid.
  • the annular regions 13 can corresponding Fig. 2 have a wave profile or accordingly Fig. 3 a sawtooth profile or equivalent Fig. 4 a rectangular profile.
  • Fig. 5 a step profile conceivable.
  • annular portions 13 each have annular beads 15, one of which project inwardly and the other outwardly.
  • the different annular beads 15 go directly into each other, creating a sinusoidal profile. It is clear that basically only outwardly projecting annular beads 15 or only inwardly projecting annular beads 15 can be provided.
  • the annular beads 15 connect tube regions 16 in the tube longitudinal direction. These tube regions 16 can basically have constant cross sections. The varying cross sections within the respective region 13 are then realized by the beads 15.
  • the successive pipe portions 16 are provided with stepped cross-sections, similar to the in Fig. 5 shown embodiment. While in the embodiments of Fig.
  • the respective longitudinal section 9 thereby has a decreasing average cross section in its longitudinal direction or in the flow direction of the first fluid.
  • the annular regions 13 with varying cross sections or the longitudinal sections 9 can be realized, for example, by upsetting the plastic tube 4. Such compression can be realized particularly favorable during the production of the plastic pipes 4. For example, during an extrusion process.
  • the plastic pipes 4 may have an inlet portion 19, an outlet portion 20, and a middle portion 21, respectively exhibit. While the inlet portion 19 is connected to the inlet tank 2, the outlet portion 20 is connected to the outlet tank 3.
  • the Fig. 7 to 9 In this case, the plastic pipes 4 without the containers 2, 3 and for the sake of simplicity also without the longitudinal sections 9.
  • the middle section 21 connects the inlet section 19 with the outlet section 20, wherein transition sections 22 can be provided, which can be assigned to the central section 21. It is also possible to assign the one transition section to the inlet section 19 and to assign the other transition section 22 to the outlet section 20. Important for those in the Fig.
  • a wall thickness 23 of the central portion 21 is smaller than a wall thickness 24 of the inlet portion 19 and smaller than a wall thickness 25 of the outlet portion 20.
  • the wall thicknesses 24, 25 of the inlet portion 19 and the outlet portion 20 are equal. They are as small as possible, but must have a minimum wall thickness in order to be able to produce the connection with the respective container 2, 3 with sufficient reliability and with sufficient reliability in the context of mass production. Conveniently, the inlet portion 19 and the outlet portion 20 thus have this required for the respective connection technique minimum wall thickness 24 and 25.
  • the middle portion 21 has in contrast to a much smaller wall thickness 23.
  • the smaller wall thickness 23 is in a range between 30% inclusive 70% of the wall thickness 24 of the inlet portion 19 or the wall thickness 25 of the outlet portion 20.
  • Preferred is the embodiment shown here, in which the wall thickness 23 in the central portion 21 is about half as large as the wall thicknesses 24, 25 of the inlet portion 19 and the outlet portion 20th ,
  • Corresponding Fig. 7 can the reduced wall thickness 23 of the central portion 21 be realized in that the respective plastic pipe 4 exclusively one Outer cross-section 26 is reduced.
  • Corresponding Fig. 8 Alternatively, it is also possible to increase only an inner cross-section 27 of the plastic tube 4 in order to realize the reduced wall thickness 23 of the central portion 21.
  • It is also the same Fig. 9 it is possible to produce the reduced wall thickness 23 of the middle section 21 by reducing the outer cross section 26 on the one hand and by widening the inner cross section 27 on the other hand.
  • the respective longitudinal section 9 can now be arranged in the inlet section 19.
  • the respective longitudinal section 9 may be arranged in the outlet section 20. It is also possible to arrange the respective longitudinal section 9 in the middle section 21.
  • the respective longitudinal section 9 can be arranged in one of the transition regions 22. For example, at the transition 22 between the inlet portion 19 and central portion 21 or at the junction 22 between the middle portion 21 and outlet 20.
  • a greater wall thickness is, for example, for simplified realization of this longitudinal section 9.
  • This larger wall thickness in the central portion 21 is in the in Fig. 13 shown variant designated 23 '. It is in particular greater than upstream and downstream of the longitudinal section 9 within the central section 21. It is at most as large as the wall thicknesses 24, 25 of the inlet section 19 and the outlet section 20, respectively.
  • the inlet section 19 is preferably at most 20% of the total length 12 or at most 10% of the total length 12 of the respective plastic tube 4.
  • the outlet section 20 comprises a maximum of 20% or a maximum of 10% of the total length 12 of the respective plastic tube 4.
  • Fig. 10 shows an embodiment in which within the respective plastic pipe 4, two such longitudinal sections 9 are present. These two longitudinal sections 9 are arranged spaced apart in the tube longitudinal direction. Said distance 28 may be, for example, five times greater than an outer diameter 29 or as an inner diameter 30 of the tube 4.
  • the first longitudinal section 9, shown on the left can have a distance 32 from an inlet 31 of the respective plastic pipe 4, which, for example, may be between 50% and 60% inclusive of the total length 12 of the pipe 4.
  • the length 11 of the longitudinal sections 9 is preferably between 5% and 10% inclusive of the total length 12 of the respective tube 4.
  • An outer cross section or outer diameter 33 in the largest cross section of the respective longitudinal section 9 or the associated inner cross section or inner diameter 34 can be between 1, 4 to 2.0 times as large as the outer diameter 29 and the inner diameter 30 of the tube 4th
  • Fig. 11 shows an embodiment in which the respective longitudinal portion 9 is realized within the central portion 21. Visible here are again the different wall thicknesses 23, 24, 25. Again, within the longitudinal section 9 of the largest outer diameter 33 and the largest inner diameter 34 1.4 to 2.0 times larger than the outer diameter 29 and the inner diameter 30 of Plastic pipe 4 in the central portion 21 or as here in the inlet section 19 or in the outlet section 20th
  • Fig. 12 shows a variant in which the longitudinal section 9 is incorporated in the outlet section 20, that is, in a region of the plastic tube 4, which has a greater wall thickness 25.
  • the central portion 21, which has the smaller wall thickness 23, is reproduced here in abbreviated form for clarity. In this embodiment, it comprises, for example, a range of
  • the inlet portion 19 comprises, as before, a range of 10% to and including 20% of the total length 12.
  • the length 32 of the inlet portion 19 and the length 28 of the central portion 21 are in Fig. 12 not reproduced to scale.
  • the reduced wall thickness 23 in the middle section 21 not only improves the heat transfer between the two fluids. At the same time, it leads to a significant weight saving for the heat exchanger 1. In addition, manufacturing costs can be reduced, since significantly less plastic material is needed.
  • Fig. 13 shows an embodiment in which within the central portion 21, which is actually characterized by the reduced wall thickness 23, a portion 35 is provided which has a greater wall thickness 23 '. This can be between the wall thickness 23 of the remaining middle section 21 and between the wall thicknesses 24 and 25 of the inlet section 19 and the outlet section 20.
  • said portion 35 is arranged at the end of the central portion 21, so that the central portion 21 passes over this longitudinal portion 35 in the transition portion 22 in the end portion 20.
  • the central portion 21 could pass over this section 35 directly into the end portion 20.
  • the central portion 21 extends from the inlet portion 19 and the inlet-side transition portion 22 to the beginning of the longitudinal portion 9 containing portion 35 over a length 36, which is reproduced here shortened and the example. In a range of including 40% up to and including 60% of Total length 12 of the Plastic tube 4 may lie. In Fig. 13 In addition, the inner diameter 30 of the plastic pipe 4 in the inlet section 19 is indicated.
  • Fig. 14 now shows an embodiment in which the longitudinal section 9 is arranged in the outlet-side transition section 22.
  • the longitudinal portion 9 corresponding to the transition portion 22 from the central portion 21 to the outlet portion 20 has an increasing wall thickness.
  • the length 32 of the inlet portion 19 is again in a range of including 10% to 20% inclusive of the total length 12 of the plastic tube 4.
  • the length 11 of the longitudinal section 9 here corresponds to the length of the outlet-side transition section 22 and is, for example, in a range of inclusive
  • a length 37 of the outlet portion 20 is suitably within a range of 10% to and including 20% of the total length 12.
  • the outer diameter 29 of the tube 4 in the inlet section 19 is additionally indicated.

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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)
EP09177142A 2008-12-05 2009-11-26 Échangeur de chaleur en plastique Not-in-force EP2204628B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/329,225 US20100139902A1 (en) 2008-12-05 2008-12-05 Plastic heat exchanger

Publications (2)

Publication Number Publication Date
EP2204628A1 true EP2204628A1 (fr) 2010-07-07
EP2204628B1 EP2204628B1 (fr) 2012-02-15

Family

ID=41818735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09177142A Not-in-force EP2204628B1 (fr) 2008-12-05 2009-11-26 Échangeur de chaleur en plastique

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US (1) US20100139902A1 (fr)
EP (1) EP2204628B1 (fr)
AT (1) ATE545836T1 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
ITMI20071419A1 (it) * 2007-07-16 2009-01-17 Ilpea Ind Spa Circuito di raffreddamento
US20100294474A1 (en) * 2009-05-22 2010-11-25 Sumito Furuya Hirota Heat exchanger tube
KR20110082922A (ko) * 2010-01-12 2011-07-20 엘지전자 주식회사 열교환기
US20140054017A1 (en) * 2011-10-19 2014-02-27 Panasonic Corporation Heat exchange apparatus
CN102840770A (zh) * 2012-09-15 2012-12-26 马利萍 集热水器及应用该集热水器的空调
WO2016005810A1 (fr) * 2014-07-10 2016-01-14 Zehnder Group International Ag Batterie de tubes pour radiateur de chauffage ou radiateur de refroidissement
DE102015204015A1 (de) * 2015-03-05 2016-09-08 Mahle International Gmbh Wärmetauscher, insbesondere für ein Kraftfahrzeug
EA035458B1 (ru) * 2015-03-10 2020-06-19 Зендер Груп Интернэшнл Аг Трубный регистр и способ его изготовления
CN106121803A (zh) * 2016-06-23 2016-11-16 北京航天发射技术研究所 散热器
US10571197B2 (en) 2016-10-12 2020-02-25 Baltimore Aircoil Company, Inc. Indirect heat exchanger
US10641554B2 (en) * 2016-10-12 2020-05-05 Baltimore Aircoil Company, Inc. Indirect heat exchanger
US10655918B2 (en) 2016-10-12 2020-05-19 Baltimore Aircoil Company, Inc. Indirect heat exchanger having circuit tubes with varying dimensions
US10962295B2 (en) * 2019-02-22 2021-03-30 Mikutay Corporation Heat exchange apparatus having a plurality of modular flow path assemblies, encased in a core body with a plurality of corresponding flow path assembly seats, providing means for independent positioning and axial alignment for a desired effect

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US2562785A (en) * 1946-02-12 1951-07-31 Calumet And Hecla Cons Copper Integral finned tube
US4722829A (en) * 1986-03-24 1988-02-02 Giter Gregory D Blood oxygenator
DE9418641U1 (de) * 1994-11-22 1995-03-02 Armand Gunter Dipl Ing Wärmeaustauschrohr
DE29708011U1 (de) * 1997-05-03 1998-08-27 Solvay Verwaltungs Und Vermitt Abgasrückkühler
DE20313291U1 (de) * 2003-08-26 2003-12-04 Appel, Andreas Fluidführender Wellschlauch-Wärmetauscher aus schwarzem Kunststoff
FR2849031A1 (fr) * 2002-12-19 2004-06-25 Bp Lavera Snc Procede de fabrication d'oxyde d'ethylene

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US1895947A (en) * 1931-11-11 1933-01-31 Gen Electric Heat radiator
US3677338A (en) * 1971-02-17 1972-07-18 Gen Electric Surface condenser
AR205405A1 (es) * 1974-12-20 1976-04-30 Ecodyne Corp Un tubo intercambiador de calor realizado de un material plastico
EP0226825B1 (fr) * 1985-12-16 1990-08-29 Akzo N.V. Liaison d'un profilé creux avec une plaque en matière plastique, en particulier pour la fabrication d'échangeurs de chaleur
GB2212256B (en) * 1987-11-12 1992-04-22 James Gray Improvements in and relating to heat exchangers
FR2901870B1 (fr) * 2006-06-01 2008-08-01 Nobel Plastiques Soc Par Actio Echangeur thermique ayant un serpentin en tube annele

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562785A (en) * 1946-02-12 1951-07-31 Calumet And Hecla Cons Copper Integral finned tube
US4722829A (en) * 1986-03-24 1988-02-02 Giter Gregory D Blood oxygenator
DE9418641U1 (de) * 1994-11-22 1995-03-02 Armand Gunter Dipl Ing Wärmeaustauschrohr
DE29708011U1 (de) * 1997-05-03 1998-08-27 Solvay Verwaltungs Und Vermitt Abgasrückkühler
FR2849031A1 (fr) * 2002-12-19 2004-06-25 Bp Lavera Snc Procede de fabrication d'oxyde d'ethylene
DE20313291U1 (de) * 2003-08-26 2003-12-04 Appel, Andreas Fluidführender Wellschlauch-Wärmetauscher aus schwarzem Kunststoff

Also Published As

Publication number Publication date
US20100139902A1 (en) 2010-06-10
EP2204628B1 (fr) 2012-02-15
ATE545836T1 (de) 2012-03-15

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