EP1864005A1 - Echangeur thermique pour gaz d'echappement, notamment refroidisseur de gaz d'echappement pour le recyclage des gaz d'echappement dans les vehicules a moteur - Google Patents

Echangeur thermique pour gaz d'echappement, notamment refroidisseur de gaz d'echappement pour le recyclage des gaz d'echappement dans les vehicules a moteur

Info

Publication number
EP1864005A1
EP1864005A1 EP06723657A EP06723657A EP1864005A1 EP 1864005 A1 EP1864005 A1 EP 1864005A1 EP 06723657 A EP06723657 A EP 06723657A EP 06723657 A EP06723657 A EP 06723657A EP 1864005 A1 EP1864005 A1 EP 1864005A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
heat exchanger
gas heat
inserts
exchanger according
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.)
Withdrawn
Application number
EP06723657A
Other languages
German (de)
English (en)
Inventor
Jens Ruckwied
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 Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1864005A1 publication Critical patent/EP1864005A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2889—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with heat exchangers in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • Exhaust gas heat exchanger in particular exhaust gas cooler for a
  • the invention relates to an exhaust gas heat exchanger, in particular an exhaust gas cooler for exhaust gas recirculation in motor vehicles.
  • the exhaust gas heat exchanger is designed as an exhaust gas cooler and turned on in an exhaust gas recirculation line of a diesel engine.
  • the exhaust gas cooler is associated with an oxidation catalyst, which in one embodiment (according to FIG. 4 of the earlier application) is integrated into the exhaust gas cooler in such a way that the oxidation-catalytic coating is arranged on the inner wall of the exhaust gas pipes.
  • a disadvantage of this solution is that the heat transfer and the heat conduction in the exhaust pipes through the catalytic coating, preferably a noble metal such. B. platinum is affected.
  • the oxidation-catalytic coating ie the catalyst, has a relatively low temperature, since it is arranged on the tube wall cooled from outside by a liquid medium.
  • the oxidation catalyst needs a minimum temperature to "jump": the oxidation of hydrocarbons - and carbon monoxide (CO) - takes place in a temperature range of about 200 to 600 degrees C.
  • the catalytic efficiency is not optimal in this arrangement of the coating and its associated relatively low temperature.
  • JP 2000 257512 A, JP 2000 249003 A and JP 2000 038962 A have disclosed exhaust gas coolers of an exhaust gas recirculation system, the exhaust gas pipes being provided on their inner wall (exhaust gas side) with a catalytic layer, in particular an oxidation catalytic converter such as platinum. Also for these interior wall coatings apply the aforementioned disadvantages, d. H. a lower temperature of the oxidation catalyst.
  • the invention aims to improve the effectiveness of the oxidation catalyst.
  • the deposits form the carrier of the oxidation catalytic substance, which is thus not - primarily - arranged on the inner wall of the exhaust ducts, but within the flow cross-section of the exhaust ducts, where significantly higher temperatures prevail than at the duct wall.
  • the advantage of improved heat transfer on the exhaust side and thus improved exhaust gas cooling is achieved, which in turn has smaller exhaust gas heat exchanger result, combined with a reduction in weight or cost.
  • the channels or exhaust pipes may have any desired cross-section, with circular and rectangular cross-sections being preferred.
  • the inserts are connected to the inner wall of the tubes by soldering or welding, via contact points in the form of crests, wave crests or ribbed arches. It is provided according to an advantageous embodiment of the invention that not all, but only part of the wave crests of a corrugated fin is connected to the pipe inner wall, while the remaining part of the wave crests is spaced from the pipe wall and is completely surrounded by the hot exhaust gas stream. This achieves the advantage of improved conversion due to higher temperature of the oxidation catalyst.
  • the deposits, z. B. corrugated ribs or rib ribs need not necessarily be made as a separate part, but can also be integral with the pipe wall of the exhaust pipe, z. B. be formed at a flat tube cross-section.
  • the catalytic substance is additionally arranged on the tube inner wall, so that the entire area swept by the exhaust gas is coated with the oxidation-catalytic substance.
  • the channels are formed by adjacent disks.
  • the channels can be produced particularly advantageously by a reshaping production method, such as pressing, stamping or by an original molding process, such as casting.
  • the discs form pairs of discs.
  • the disks and / or adjacent pairs of disks are particularly advantageously stackable and / or with each other in particular - A -
  • FIG. 1 shows a cross section through an exhaust gas cooler
  • Fig. 2 shows a cross section through an exhaust pipe with a modified inner fin
  • Fig. 3 is a sectional view of another embodiment of a Abgas139übertragers and
  • Fig. 4 shows another embodiment of a heat exchanger, in particular exhaust gas heat exchanger.
  • FIG. 1 shows a cross section through an exhaust gas heat exchanger 1, which can be used as an exhaust gas cooler of an exhaust gas recirculation system (AGR system), not shown.
  • the exhaust gas heat exchanger 1 has a housing shell 2, which has an approximately rectangular cross-section and a bundle of exhaust pipes 3 receives, which also have an approximately rectangular cross-section and form between them and the housing shell 2 column 4, which are flowed through by a liquid coolant ,
  • Such exhaust gas heat exchangers are described in more detail in DE 199 07 163 C2 and DE 195 40 683 A1 of the applicant.
  • the coolant is taken from a coolant circuit, not shown, of an internal combustion engine of the motor vehicle and cools the hot exhaust gas flowing through the exhaust pipes 3.
  • meander-shaped deposits 5 are arranged, which are also referred to as inner ribs.
  • the inner ribs 5 have peaks 5a (peaks), which are preferably soldered or welded to the inner wall of the exhaust pipes 3.
  • the surface of the inner fin 5 is coated with an oxidation-catalytic substance, for example a noble metal such as platinum.
  • an oxidation-catalytic substance for example a noble metal such as platinum.
  • the inner fins 5 are catalytic coated, but also the inner wall of the exhaust pipes 3, which has an oxikatalytician layer 6a.
  • the inserts may also have other shapes than shown in the drawing, z.
  • the inserts in particular in the case of a rectangular crosspiece, can also be formed in one piece with the tube wall by shaping, folding and soldering or welding the tube from a sheet metal.
  • Fig. 2 shows a second embodiment of the invention, wherein only the cross section of a single exhaust pipe 7 is shown.
  • a corrugated inner rib (corrugated fin) 8 is arranged whose wave crests or ribbed arcs are offset from one another such that only a part, in the drawing, the wave crests 8a, 8d, 8g, the inner wall contact the exhaust pipe 7 and are soldered at these contact points with the pipe wall.
  • the other peaks, in the drawing 8b, 8c, 8e, 8f have a distance from the inner wall and are completely exposed to the exhaust gas flow.
  • the entire inner fin 8 and the inner wall of the exhaust pipe 7 have a continuous oxikatalytician coating 9. Due to the partial connection of the corrugated fin 8, the average temperature The catalytic coating is further increased, whereby a higher efficiency of the oxidation catalyst is achieved.
  • Fig. 3 shows in a sectional view another embodiment of a Abgas139übertragers 10, which is designed as an exhaust gas cooler and in an exhaust gas recirculation system (EGR system) of an internal combustion engine for motor vehicles can be used.
  • EGR systems are known from the prior art: in this case, the exhaust gas of the internal combustion engine is removed before or after an exhaust gas turbine (high pressure or low pressure feedback) and cooled one or two stages supplied to the intake of the engine again. The amount of exhaust gas removed is regulated by means of an exhaust gas recirculation valve (EGR valve).
  • the illustrated exhaust gas cooler 10 is traversed by exhaust gas and cooled by a liquid coolant, which is preferably removed from the cooling circuit of the internal combustion engine.
  • the exhaust gas cooler 10 has a two-part housing 11, which consists of a trough-shaped housing shell 11a and a lid 11b - both parts are preferably formed as sheet metal parts and can be produced by deep drawing.
  • a package of disc pairs 12 is arranged, which are flowed through by the coolant.
  • the pairs of disks 12 extend over the full width of the housing shell 11a, which has two housing walls 11c, 11d, which are shown vertically in the drawing and run parallel to one another.
  • the pairs of disks 12 have longitudinal sides 12a, which abut against the housing walls 11c, 11d, and form flow channels, which are equipped with turbulence inserts 13 to increase the heat transfer.
  • the pairs of discs 12 are arranged in parallel at a distance from each other and form passageways 14 for the exhaust gas.
  • turbulence inserts 15 are arranged to increase the heat transfer.
  • All parts of the exhaust gas cooler 10 are cohesively, ie, connected to each other by soldering, welding or gluing.
  • the soldering, welding or gluing is preferably carried out in one operation in a soldering oven or welding apparatus, not shown, or by means of an adhesive device.
  • the disk pairs each have a top disk 80b and a bottom disk 80c.
  • 4 shows a further embodiment of a heat exchanger 16, in particular an exhaust gas heat exchanger.
  • the heat exchanger 16 has a first housing element 60, 70 and a second housing element 80.
  • the housing element 60, 70 receives first disks 40 and second disks 50 in it.
  • the first disks 40 and the second disks 50 are arranged substantially parallel to each other and stackable.
  • a first disk 40 forms a disk pair 22 with a second disk 50.
  • the first and second disks are connected to one another in a material-bonded manner, in particular by soldering, welding or gluing.
  • adjacent pairs of disks 22, in particular on cups 20 at both disk ends of the disks 40, 50 and the pairs of disks 22 are connected to one another in a material-locking manner, in particular by soldering, welding or gluing.
  • the discs 40, 50 and the disc pairs have cup openings.
  • the first housing element 60, 70 is materially and / or positively connected to the second housing element.
  • the second housing element has a first housing opening for the entry of the first medium.
  • the first medium in particular the hot exhaust gas
  • flows into the disk pairs 22 through the Napföffonne flows through the pairs of disks in the flow channel formed in the interior 20 and flows through a second housing opening of the housing member 80 from this via the outlet.
  • the disk pairs are stackable in the stacking direction S.
  • the housing element 80 has a third housing opening, whereby cooling medium, in particular liquid coolant, cooling water, gas or refrigerant, in particular an air conditioner, enters the first housing element 60, 70 via an inlet and cools the latter, so that substantially no thermal stresses occur.
  • the second cooling medium circumscribes the outer sides of the disks 40, 50 and the disk pairs 22 and the disk pair edge surfaces 24. It flows through openings formed by the spaced pairs of disks, whereby a heat exchange between the exhaust gas to be cooled takes place. Second flow channels 30 of the cooling medium are also formed between the first housing element 60, 70 and the disc pair edge surfaces 24, as a result of which the housing element 60, 70 is substantially cooled.
  • the cooling medium leaves a fourth housing opening of the housing element 80 via an outlet.
  • the heat exchanger 16 is in the form of a module in a modular system. built-in. The heat exchanger can be integrated in a cooling module.
  • a cooling module comprises in particular a plurality of heat exchangers, in particular coolant radiator, oil cooler, intercooler, exhaust gas cooler, heat exchanger of an air conditioner.
  • the housing member 60, 70 receives in its interior the discs 40, 50 and the disc pairs 22.
  • the first housing element 60, 70 is materially connected to the second housing element 80 by soldering, welding, gluing, etc. and / or by form-fitting by crimping, corrugated slot crimping, crimping, folding, clips, etc.
  • both housing elements are sealed by a sealing element, in particular an O-ring, etc. with respect to each other.
  • Adjacent pairs of discs are spaced apart by forms, in particular turboule inserts or turbulence-generating elements, 18.
  • the heat transfer between the first medium and the second medium is improved.
  • Variants, in particular turbulence inserts or turbulence-generating elements, 18 are also arranged within the pairs of disks and, in particular, bonded to the disks 40, 50 by soldering, welding, gluing and / or forming from them by forming.
  • the inserts 5, 8, 13, 15, 18 are formed of aluminum.
  • the inserts 5, 8, 13, 15, 18 are formed of ferrite.
  • the inserts 5, 8, 13, 15, 18 are made of a heat-resistant steel with an aluminum content of up to 10%.
  • the inserts 5, 8, 13, 15, 18 are made of a heat-resistant steel with an aluminum content of up to 10%. In another embodiment, the inserts 5, 8, 13, 15, 18 are made of a heat-resistant steel with an aluminum content of up to 6%.
  • the inserts 5, 8, 13, 15, 18 are formed of a heat-resistant steel with aluminum coating.
  • the inserts 5, 8, 13, 15, 18 are formed of a heat-resistant steel with aluminum coating.
  • the inserts 5, 8, 13, 15, 18 are formed of a heat-resistant steel with aluminum plating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un échangeur thermique pour gaz d'échappement, notamment un refroidisseur de gaz d'échappement pour le recyclage des gaz d'échappement dans les véhicules à moteur, cet échangeur comprenant des conduites (3) refroidies par un fluide et traversées par les gaz d'échappement. Cet échangeur thermique (1) pour gaz d'échappement est intégré dans un catalyseur d'oxydation comprenant un support enduit d'une couche d'oxydation catalytique, le support de la couche d'oxydation catalytique (6) formant une garniture (5) dans les conduites (3).
EP06723657A 2005-03-24 2006-03-23 Echangeur thermique pour gaz d'echappement, notamment refroidisseur de gaz d'echappement pour le recyclage des gaz d'echappement dans les vehicules a moteur Withdrawn EP1864005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005014295 2005-03-24
PCT/EP2006/002666 WO2006100072A1 (fr) 2005-03-24 2006-03-23 Echangeur thermique pour gaz d'echappement, notamment refroidisseur de gaz d'echappement pour le recyclage des gaz d'echappement dans les vehicules a moteur

Publications (1)

Publication Number Publication Date
EP1864005A1 true EP1864005A1 (fr) 2007-12-12

Family

ID=36588809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723657A Withdrawn EP1864005A1 (fr) 2005-03-24 2006-03-23 Echangeur thermique pour gaz d'echappement, notamment refroidisseur de gaz d'echappement pour le recyclage des gaz d'echappement dans les vehicules a moteur

Country Status (4)

Country Link
US (1) US7614389B2 (fr)
EP (1) EP1864005A1 (fr)
JP (1) JP2008534834A (fr)
WO (1) WO2006100072A1 (fr)

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DE102013216408A1 (de) * 2013-08-19 2015-02-19 Behr Gmbh & Co. Kg Wärmeübertrager
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DE102016215265A1 (de) * 2016-08-16 2018-02-22 Mahle International Gmbh Herstellungsverfahren eines Wärmeübertragerrohres
DE102018124574B4 (de) * 2018-10-05 2022-09-29 Hanon Systems Rippenwärmeübertrager
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EP3919849B1 (fr) 2020-06-05 2024-02-14 WS-Wärmeprozesstechnik GmbH Échangeur de chaleur tubulaire plan
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US7614389B2 (en) 2009-11-10
JP2008534834A (ja) 2008-08-28
US20080178577A1 (en) 2008-07-31
WO2006100072A1 (fr) 2006-09-28

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