EP2381202A2 - Elément de connexion pour échangeurs de chaleur à tubes - Google Patents

Elément de connexion pour échangeurs de chaleur à tubes Download PDF

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Publication number
EP2381202A2
EP2381202A2 EP11162949A EP11162949A EP2381202A2 EP 2381202 A2 EP2381202 A2 EP 2381202A2 EP 11162949 A EP11162949 A EP 11162949A EP 11162949 A EP11162949 A EP 11162949A EP 2381202 A2 EP2381202 A2 EP 2381202A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
connecting element
inner diameter
opening
flow
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Withdrawn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
EP11162949A
Other languages
German (de)
English (en)
Other versions
EP2381202A3 (fr
Inventor
Johann Justl
Michael Pörringer
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.)
Krones AG
Original Assignee
Krones AG
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 Krones AG filed Critical Krones AG
Publication of EP2381202A2 publication Critical patent/EP2381202A2/fr
Publication of EP2381202A3 publication Critical patent/EP2381202A3/fr
Withdrawn legal-status Critical Current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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • 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
    • F28D7/16—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 in parallel spaced relation
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49391—Tube making or reforming

Definitions

  • the invention relates to a connecting element for connecting a heat exchanger element of a tubular heat exchanger with at least one product-carrying pipe to a flow system according to the preamble of claim 1.
  • EP 1 604 162 B1 such as DE 10 2005059 463 B4 Tubular heat exchanger known in which a flow in the inlet region of a pipe support plate is influenced by means of a product to be flowed around the displacement body.
  • the invention has for its object to design a connecting element for a tubular heat exchanger with at least one heat exchanger element and at least one product-carrying tube can be reduced or avoided in the fiber deposits in the inlet region of the heat exchanger element of the tubular heat exchanger.
  • a modular component is arranged upstream as a connecting element in the inlet region of the heat exchanger element, which forms an outer peripheral, preferably, but not necessarily circular flow separation edge for swirling.
  • the stall edge also provides adequate flow velocity control and vortex formation, which in turn reduces fiber deposits in the inlet region of the tube heat exchanger.
  • the product stream typically flows from the product-carrying tube into the heat exchanger element. That is, the product stream flows into the connecting member from upstream with respect to the connecting member, and flows out of the connecting member into the heat exchanging member of the tubular heat exchanger, for example, immediately downstream of the connecting member.
  • the product-carrying tube, from which the product flows through the connecting element into the heat exchanger element may be curved, as in the case of a connecting bend, or may be a straight tube.
  • the connecting element has an axisymmetric cross-section.
  • the longitudinal axis of the connecting element preferably coincides with the longitudinal axis of the heat exchanger element of the tubular heat exchanger.
  • the heat exchanger element of the tubular heat exchanger comprises an example of a plurality of inner tubes for guiding the product, wherein the inner tubes are held by a pipe support plate.
  • the connecting element can be mounted modularly between the heat exchanger element of the tubular heat exchanger and the at least one product-carrying pipe.
  • a modular attachable connection element is easy to install, easy to retrofit to existing systems, easy to maintain when needed. Its production is decoupled from the production of a tube heat exchanger and other related filling system, which makes it easy to manufacture.
  • the flow-breaking edge on the circumference of the through-opening of the connecting element can advantageously be bevelled or rounded. It is favored by these forms of stall at the stall edge.
  • the stall edge can be formed at an angle ⁇ measured to the longitudinal axis of the connecting element, wherein ⁇ measures a maximum of 90 °.
  • the passage opening of the connecting element may be formed, for example symmetrical to the longitudinal axis of the connecting element.
  • the passage opening can be circular in shape, resulting in addition to the fluidic advantages and manufacturing advantages.
  • the through-opening may have an inner diameter, d i , in the region of the flow-breaking edge, with the inner diameter of the through-opening typically decreasing from an inlet opening facing away from the heat exchanger element with a first inner diameter, d 1 , to the inner diameter d i in the area of the flow-breaking edge, and then typically from the inner diameter d i to an output opening facing the heat exchanger element having a second inner diameter, d 2 , increases.
  • the region of the stall edge between the inlet opening and the outlet opening wherein typically d i is less than d 1 and less than d 2 .
  • the area of the entrance opening as a first area having a first inner diameter, d 1
  • the area of the exit opening as a second area having a second inner diameter, d 2
  • the area of the through hole located between the first and second faces may have an inside diameter, d i , where d i is smaller than d 1 and smaller than d 2 . Due to the different inner diameters, a corresponding control of the flow velocity is achieved and the vortex formation, in particular in the region of the flow separation edge, that is the surface with the inner diameter d i favors, which in turn fiber deposits are reduced in the inlet region of the tubular heat exchanger.
  • the connecting element may be formed symmetrically to the passage opening, resulting in addition to the fluidic advantages and manufacturing advantages.
  • the connecting element may be clear to regard the connecting element as symmetrical to the surface formed between the first surface with the first inner diameter, d 1 , and the surface with the second inner diameter, d 2 . With such a choice of shape, the connecting element is particularly easy to manufacture and still achieves the already mentioned above flow advantages.
  • the second inner diameter, d 2 may be greater than the first inner diameter, d 1 .
  • the inner diameter of the passage opening can, for example, change continuously from the inlet opening with the first inner diameter, d 1 , to the inner diameter, d i , and then change continuously from the inner diameter, d i , to the outlet opening with the second inner diameter, d 2 .
  • the first surface and the second surface have the same orientation.
  • the continuous, gentle change of the inner diameter of the connecting element further promotes the flow guidance, in particular in the region in front of the flow separation edge and in the region behind the flow separation edge.
  • an inventive connecting element in a region which is located between the inlet opening and the flow separation edge indentations (recesses), in particular part-circular indentations (recesses) include.
  • indentations (recesses) effectively extend the stall margin in said region so that vortex formation can be correspondingly enhanced, which has a positive effect on the reduction of fiber deposits downstream in the inlet area of the tube heat exchanger.
  • the part-circular indentations can be arranged axially symmetrical to the longitudinal axis of the connecting element.
  • the inner diameter of the passage opening between the inlet opening with the inner diameter d 1 and the region of the flow separation edge with the inner diameter d i outside, in particular between the respective part-circular indentations from the first inner diameter d 1 to the inner diameter d i steadily decrease.
  • the inner diameter behave similarly, as in the previously described embodiment. Due to the constant change from the inner diameter d 1 to the inner diameter d i , in particular the vortex formation can be concentrated on the region of the flow separation edge. The steady, gentle change of the inner diameter of the connecting element can favor the flow guidance.
  • the invention also provides a tubular heat exchanger having at least one heat exchanger element with a jacket tube and at least one inner tube and with a connecting element according to the invention, as described above.
  • the advantage of such Tubular heat exchanger is the appropriate control and reduction of fiber deposits in the inflow region of a heat exchanger element, which is preceded by a connecting element according to the invention.
  • the invention provides a method for retrofitting a flow system with a tubular heat exchanger having at least one heat exchanger element and at least one product-carrying tube, comprising connecting one end of the heat exchanger element with a connecting element on a heat exchanger element side of the connecting element, and connecting the connecting element on the heat exchanger element opposite side with the product-carrying pipe.
  • FIG. 1 illustrates a tubular heat exchanger with at least one heat exchanger element 1 and another, product-carrying tube 13, which are connected to a further, product-carrying tube which is curved, a connecting sheet 6.
  • the tubular heat exchanger with the at least one heat exchanger element 1, the product-carrying tube 13 and the connecting sheet 6 are of the type used in the filling industry for liquid food products (eg water, juices, milk) in the heat treatment (heating or cooling) of a food product become.
  • heat exchanger elements 1 be installed in order to achieve the longest possible flow paths for the product.
  • the connection of the further, product-carrying tube 13 with the connecting sheet 6 is in FIG. 1 executed by appropriate end-side mounting flanges 12.
  • connecting element 11 used for connection.
  • the connecting element 11 may, for example, be a further element according to the invention of the type like the connecting element 7 according to the invention, or it may be a simple adapter or spacer.
  • the heat exchanger element 1 of the tubular heat exchanger in FIG. 1 has a jacket tube 2, advantageously made of stainless steel (but also of other alloys or, for example, titanium, zinc or special plastics), on, the respective end attachment flanges 8, shown here only on the left side, for mounting the heat exchanger element 1 in a system as in FIG. 1 shown possesses.
  • a jacket tube 1 advantageously made of stainless steel (but also of other alloys or, for example, titanium, zinc or special plastics), on, the respective end attachment flanges 8, shown here only on the left side, for mounting the heat exchanger element 1 in a system as in FIG. 1 shown possesses.
  • the jacket tube 1 one or more inner tubes 3 are provided which extends substantially parallel to the axis of the jacket tube 1 between mounting flanges 8.
  • a plurality of inner tubes 3 combined to form a tube bundle.
  • the inner tubes 3 circulates a primary stream, so a liquid food product that may contain additional fibers such as pulp or fibrous pieces.
  • FIG. 1A shows a schematic plan view of a tube support plate 5, which summarizes in this example seven inner tubes.
  • tube 13 may be another heat exchanger element of the type as the heat exchanger element 1.
  • the flow direction of the primary flow is, for example, from the tube 13 into the connecting bend 6 and from there into the heat exchanger element 1, which is connected to the connecting bend 6 with the aid of the connecting element 7 according to the invention.
  • the connecting element 11 at the upstream end of the tube 13 may be a further inventive connecting element of the type as the connecting element 7.
  • the connecting element 11 has only an adapter function and does not have a blind-like constriction, as described below.
  • FIGS. 1 and 1B shows an example of the connection of a plurality of heat exchanger elements in a tubular heat exchanger system, in this example, the connecting sheets 6 divert the primary currents in each case by 180 °.
  • the connecting elements 7 and 11, as in FIGS. 1 and 1B shown, in each case in the inflow and outflow of the tubes 1 and 13 are mounted, but it would also be possible (not shown) that inventive connecting elements 7 can be mounted both in the inlet and in the outflow of the element 1 and 13.
  • the secondary stream which consists of a suitable heat exchange medium, for example water
  • a connecting pipe 10 and a connecting piece with flanges 10a which may also include a valve, directly deflected to the next heat exchanger element.
  • the secondary medium is usually fed in countercurrent to the primary medium.
  • the connecting sheet 6 thus diverts in this case only the primary current.
  • FIG. 1 is shown as an example, as a connecting pipe 10 connects directly to the jacket tube 2. It is possible as well as in FIG. 1B have shown that the connecting tube is connected via lateral connection terminals 10b in order to be able to forward the secondary current. Further, it is possible (not shown) that a connecting arc also deflects the secondary flow, with connecting tubes 10 can be omitted, and the secondary current is passed to the connecting elements according to the invention suitably over.
  • FIGS. 1A and 1B show connecting elements 7 and 11 designed as separate, modular elements.
  • a connection element according to the invention of the type as element 7, 17 and 27, which in relation to Figures 2-4 be described, in the connecting sheet 6 or in the tube bundle in the inflow region, for example, in conjunction with the pipe support plate 5 to integrate.
  • Tubular heat exchanger as in FIGS. 1 and 1B shown may have a total length of about 3.0 m, 6.0 m or even longer
  • Figure 2 and Figure 2A show an exemplary embodiment of a connecting element 7 according to the invention for coupling the connecting sheet 6 with the heat exchanger element 1 of the tubular heat exchanger.
  • FIG. 2 shows a section through the connecting element 7 transversely to its longitudinal axis, and thus typically transverse to the longitudinal axis of the heat exchanger element 1.
  • the product flows, for example through the connecting sheet 6 in the heat exchanger element 1 with its inner tubes 3, whereby the current direction is given.
  • the connecting element 7 In the coupling region is modularly inserted between the output flange 9 of the connecting bow 6 and the input flange 8 of the heat exchanger element 1, the connecting element 7 by being suitably fastened with the respective flanges 9 and 8.
  • the connecting element 7 may have a suitable mounting bracket 14 for attachment between the flanges 8 and 9, also a flow separation edge (constriction) 7 ', which may act like an aperture and which, for example, is axially symmetrical to the longitudinal axis of the flanges 8 and 9, and the heat exchanger element 1.
  • FIG. 2A shows a corresponding sectional view along the line IIA through the connecting element 7.
  • the stall edge 7 ' is formed on the circumference of the through hole of the connecting element 7.
  • the stall edge 7 ' runs around the passage opening.
  • the stall edge may be axially symmetrical and circular and, as in FIG FIG. 2 shown to have an inner diameter d i .
  • the connecting element has an inlet opening, which faces away from the heat exchanger element 1 of the tubular heat exchanger, and an outlet opening, which faces the heat exchanger element 1.
  • an inlet opening which faces away from the heat exchanger element 1 of the tubular heat exchanger
  • an outlet opening which faces the heat exchanger element 1.
  • a first, facing away from the tubular heat exchanger surface of the opening having a first inner diameter d 1 and on the side of the outlet opening, a second area of the opening with an internal diameter d. 2
  • the inner diameter d 1 on the heat exchanger element 1 of the tubular heat exchanger far side corresponds approximately to the inner diameter of the connecting sheet 6.
  • the inner diameter d 2 corresponds approximately to the inner diameter of the jacket tube of the heat exchanger element 1 of the tubular heat exchanger, wherein the inner diameter are respectively related to the longitudinal axes.
  • the inner diameter of the passage opening preferably decreases symmetrically and steadily (gently), until the inner diameter d i is reached in the region of the flow separation edge.
  • the resulting by the decrease shape is similar to about a spherical surface segment (spherical cap).
  • the stall edge 7 ' at which it is preferable to rupture the flow of liquid flowing through the element, is typically bevelled or rounded. In the case of a bevel this bevel is formed in the flow direction.
  • the preferably rounded flow-off edge 7 ' is substantially perpendicular to the longitudinal axis of the connecting element.
  • O-ring grooves 18, which can receive a suitable O-ring are shown on the side facing the heat exchanger element. In FIG. 2A These grooves are drawn approximately circular, but there are also other suitable forms of grooves conceivable. Likewise, O-ring grooves may be present on the upstream side (not shown here).
  • FIG. 3 shows a further embodiment of a connecting element 17, which has further fluidic advantages.
  • FIG. 3 shows a section transverse to the longitudinal axis through the connecting element 17.
  • the connecting element 17 is structurally the in FIG. 2 shown connecting element 7 similar.
  • Connecting member 17 may be similar to connecting member 7 for connecting connecting sheets and heat exchanger elements as in Figure 1, 1 A and 1 B shown to be used. It has a mounting bracket 16, an O-ring groove 15 and a stall edge 17 'which circumscribes an area (opening) having an inner diameter d i .
  • FIG. 3A shows a section through the element FIG. 3a along the marked section line IIIA. Similar to in FIG. 2A indicated, the passage opening from the inlet opening, with the inner diameter d 1 , forth, preferably symmetrically to the longitudinal axis, continuous, cup-shaped or similar to a spherical surface segment (spherical cap), from the up to the flow separation edge 17 'with the inner diameter d i .
  • the inside diameter of the passage opening increases again until the inside diameter d 2 is reached in the region of the outlet opening.
  • the inner diameter d 2 is tuned according to the size of the jacket tube of the tube bundle and thus larger than the inner diameter d 1 .
  • FIG. 3A O-ring grooves 18 located on the downstream side of the connecting element.
  • the circumferential flow separation edge 17 ' which in turn may be bevelled or rounded, at an angle ⁇ , measured to the longitudinal axis as drawn, in the flow direction.
  • the angle ⁇ can assume values corresponding to the circumstances, for example approximately 45-60 ° in the case shown by way of example, whereby other values for this angle up to a maximum of 90 ° are also possible.
  • the inner diameter of the heat exchanger element 1 of the tubular heat exchanger to be connected by the connecting element 17 to the connecting bend is greater than the inner diameter of the connecting bend. Accordingly, the shape and orientation of the stall edge (constriction) 17 'favor the Stall and thus the control and reduction of fiber deposits in the inlet region of the heat exchanger element of the tubular heat exchanger. 1
  • FIG. 4 shows a further embodiment of a connecting element 27, which has additional fluidic advantages.
  • Connecting member 27 may be similar to connecting member 7 for connecting connecting sheets and heat exchanger elements as in Figure 1, 1A and 1B shown to be used.
  • FIG. 4 shows a section transverse to the longitudinal axis through the connecting element 27th
  • FIG. 4A shows a section through the element FIG. 3a along the marked section line IVA.
  • the connecting element 27 in turn has a suitable mounting bracket 26.
  • An O-ring groove 25 is similar to in FIG FIG. 3 shown.
  • Based on the connecting element Figure 3 and Figure 3A is how in FIG. 4 schematically indicated, the area between an inlet opening with an inner diameter d 1 and the area of the flow separation edge 27 'initially similar to in Figure 3 and Figure 3A shaped.
  • FIG. 4 shows, for example, 6 part-circular indentations (recesses). It takes between the respective recesses (recesses), ie in the non-recessed area, the inner diameter of the passage opening, as in FIG. 4A indicated, along the longitudinal axis in the direction of flow from, to the flow separation edge with the diameter d i . This decrease in the inside diameter of the through hole is, as already described in relation to FIG FIGS. 3 and 3A described, cup-shaped or similar to a spherical surface segment.
  • the stall edge 27 ' shows, similar to FIG FIG.
  • FIG. 3A in the current direction and forms an angle ⁇ to the longitudinal axis of the connecting element, which can assume values corresponding to the circumstances, for example similar to the values as associated with FIGS. 3 and 3A called.
  • the stall edge 27 ' may be beveled or rounded, as already discussed in connection with FIG FIGS. 3 and 3A discussed.
  • FIG. 4A are like in FIGS. 2A and 3A O-ring grooves 18 located on the downstream side of the connecting element.
  • the width of the connecting elements is slightly less than 50 mm.
  • Preferred inner diameters of the heat exchanger elements of the tubular heat exchanger can be 140 mm, but it is also possible for molds with larger inner diameters to occur.
  • Inner diameters of the connecting elbows are for example 80 mm, but shapes with larger inner diameters are also possible.
  • the connecting elements according to the invention shown in the figures can be modularly retrofitted to existing tubular heat exchangers, wherein in the process of retrofitting the connecting elements between a product-carrying pipe and a End of a heat exchanger element of a tubular heat exchanger, are used and correspondingly on the side facing away from the heat exchanger element with the product-carrying pipe, respectively further heat exchanger elements are connected, while they are connected on the side facing the heat exchanger element with the heat exchanger element.
  • FIG. 1B There are also applications in systems with several heat exchanger elements as in FIG. 1B conceivable in which various of the connecting elements 7, 17 and 27 according to the invention are used, in addition to adapter elements of the type as element 11th

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP11162949.9A 2010-04-22 2011-04-19 Elément de connexion pour échangeurs de chaleur à tubes Withdrawn EP2381202A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010028117A DE102010028117A1 (de) 2010-04-22 2010-04-22 Verbindungselement für Röhrenwärmetauscher

Publications (2)

Publication Number Publication Date
EP2381202A2 true EP2381202A2 (fr) 2011-10-26
EP2381202A3 EP2381202A3 (fr) 2014-04-02

Family

ID=44260105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11162949.9A Withdrawn EP2381202A3 (fr) 2010-04-22 2011-04-19 Elément de connexion pour échangeurs de chaleur à tubes

Country Status (4)

Country Link
US (1) US20110259563A1 (fr)
EP (1) EP2381202A3 (fr)
CN (1) CN102235836B (fr)
DE (1) DE102010028117A1 (fr)

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DE102007050655A1 (de) * 2007-10-24 2009-04-30 GM Global Technology Operations, Inc., Detroit Wellenschlauch
EP2607833A1 (fr) 2011-12-22 2013-06-26 Tetra Laval Holdings & Finance S.A. Module pour améliorer la durée de fonctionnement dans des échangeurs de chaleur tubulaires
WO2014060426A1 (fr) * 2012-10-17 2014-04-24 Tetra Laval Holdings & Finance S.A. Dispositif de fermeture de tubes internes dans un échangeur thermique tubulaire
DE102013113302A1 (de) * 2013-12-02 2015-06-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Hochtemperatur-Wärmeübertragervorrichtung, Solarthermiekraftwerk und Bausatz für eine Hochtemperatur-Wärmeübertragervorrichtung

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Publication number Priority date Publication date Assignee Title
DE69612998T2 (de) 1995-12-14 2001-09-06 Tetra Laval Holdings & Finance S.A., Pully Röhrenwärmetauscher
EP1604162B1 (fr) 2003-03-17 2006-08-02 Tuchenhagen Dairy Systems GmbH Echangeur thermique a faisceau tubulaire
DE102005059463B4 (de) 2005-12-13 2009-12-24 Gea Tds Gmbh Vorrichtung zur Einflussnahme auf die Strömung im Bereich einer Rohrträgerplatte eines Rohrbündel-Wärmeaustauschers

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Publication number Priority date Publication date Assignee Title
DE69612998T2 (de) 1995-12-14 2001-09-06 Tetra Laval Holdings & Finance S.A., Pully Röhrenwärmetauscher
EP1604162B1 (fr) 2003-03-17 2006-08-02 Tuchenhagen Dairy Systems GmbH Echangeur thermique a faisceau tubulaire
DE102005059463B4 (de) 2005-12-13 2009-12-24 Gea Tds Gmbh Vorrichtung zur Einflussnahme auf die Strömung im Bereich einer Rohrträgerplatte eines Rohrbündel-Wärmeaustauschers

Also Published As

Publication number Publication date
EP2381202A3 (fr) 2014-04-02
US20110259563A1 (en) 2011-10-27
CN102235836B (zh) 2013-10-16
CN102235836A (zh) 2011-11-09
DE102010028117A1 (de) 2011-10-27

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