US20150053382A1 - Heat transfer arrangement - Google Patents

Heat transfer arrangement Download PDF

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Publication number
US20150053382A1
US20150053382A1 US14/346,089 US201214346089A US2015053382A1 US 20150053382 A1 US20150053382 A1 US 20150053382A1 US 201214346089 A US201214346089 A US 201214346089A US 2015053382 A1 US2015053382 A1 US 2015053382A1
Authority
US
United States
Prior art keywords
heat transfer
transfer arrangement
accordance
bundle
tubes
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.)
Abandoned
Application number
US14/346,089
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English (en)
Inventor
Bernd Burkhardt
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.)
Friedrich Boysen GmbH and Co KG
Original Assignee
Friedrich Boysen 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 Friedrich Boysen GmbH and Co KG filed Critical Friedrich Boysen GmbH and Co KG
Assigned to FRIEDRICH BOYSEN GMBH & CO. KG reassignment FRIEDRICH BOYSEN GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BURKHARDT, BERND
Publication of US20150053382A1 publication Critical patent/US20150053382A1/en
Abandoned 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • 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

Definitions

  • the present invention relates to a heat transfer arrangement for heating, in particular for vaporizing and superheating, a working fluid by means of a flowing hot fluid, in particular by means of an exhaust gas flow of an internal combustion engine, having a fluid passage for conducting the flowing hot fluid, having a bundle of tubes arranged in the fluid passage for conducting the working fluid, with the bundle of tubes comprising a plurality of piping sections extending in parallel to one another along a longitudinal direction, and having a support structure fixedly connected to the fluid passage for holding the bundle of tubes in the fluid passage.
  • Such apparatus are also called “heat exchangers” and are used in different kinds of utilization of waste heat carried by the hot fluid.
  • heat exchangers can be used for exhaust gas utilization in internal combustion engines in that some of the thermal energy of the hot exhaust gas flow is converted into technically usable mechanical energy, for example within the framework of a closed vapor circuit. Fuel can ultimately hereby be saved.
  • the piping sections of the bundle of tubes which extend in parallel, and are in particular in straight lines, are flowed around by the hot fluid, with an effective heat transfer to the working fluid located in the interior of the piping sections taking place.
  • the bundle of tubes can in principle be arranged at any desired point in an exhaust gas line, for example in a muffler housing.
  • the object is satisfied by a heat transfer arrangement having the features of claim 1 .
  • the pipeline sections are each immovably supported at the support structure at at least one first support point and are supported at the support structure at at least one second support point spaced apart therefrom in the longitudinal direction and having movement clearance in at least one direction.
  • the bundle of tubes is therefore supported at least twice, with one bearing being configured as a locating bearing and at least one bearing remote therefrom being configured as a floating bearing.
  • one bearing being configured as a locating bearing and at least one bearing remote therefrom being configured as a floating bearing.
  • the floating bearing allows compensation movements of the piping sections as a result of thermal expansion or mechanical stresses so that unwanted tensions or material overloads are avoided.
  • the movement clearance at the second support point is in the longitudinal direction, preferably exclusively.
  • the thermal expansions and contractions of the pipeline sections which frequently occur in the axial direction during operation can thus be compensated.
  • all the first and/or all the second support points are in a transverse plane respectively extending at a right angle to the longitudinal direction. All the pipeline sections of the bundle of tubes are thus evenly supported at two points.
  • the support structure can comprise a first support element for providing all the first support points and a second support element separate from the first support element for providing all the second support points. This allows the provision of a free space which is located between the two separate support elements and which facilitates a largely unimpeded throughflow of the bundle of tubes.
  • the support elements are preferably configured as areal and extend in a respective transverse plane extending at a right angle to the longitudinal direction. On an onflow of the bundle of tubes transversely to the longitudinal direction, only a slight resistance is thus opposed to the hot fluid flow.
  • the support structure preferably comprises at least one, preferably two arrangements of stacked elongate spacers which are each arranged transversely to the longitudinal direction and in which cut-outs are provided for leading through piping sections disposed next to one another.
  • the spacers can be arranged between individual planes of the bundle of tubes and can thus stabilize and hold the bundle overall.
  • means are provided for tensioning the stacked spacers with respect to one another.
  • a fixing of all piping sections of the bundle of tubes takes place by the tensioning of the spacers with respect to one another, with it depending on the dimensioning of the cut-outs whether a movement clearance for the piping sections is present in the tensioned state, that is whether a locating bearing or a floating bearing is established.
  • Two clamps can be provided for tensioning the stacked spacers the clamps being arranged above and below the bundle of tubes and including the arrangement of spacers. This allows a particularly simple construction.
  • the clamps can be movable toward one another by means of a screw connection, in particular by means of an arranged of threaded bars and nuts.
  • the clamps can thus be moved toward one another by tightening the nuts, with the spacers located between the clamps being pressed together and the bundle of tubes being fixed.
  • An arrangement of threaded bars and associated nuts in particular minimizes the manufacturing effort for the tensioning.
  • the clamps are connected to one another, in particular welded to one another, in the tensioned state by means of a rigid bridging element.
  • the screw connection can be dispensed with in this embodiment.
  • the spacers can furthermore be fixed relative to one another by at least one U-shaped section rail.
  • a section rail can prevent an unwanted slipping of the spacers before or during the tensioning.
  • flow guide walls are arranged at both sides of the bundle of tubes in the fluid passage. Such flow guide walls can improve the efficiency of the heat exchanger in that they directly conduct the hot fluid flow between the individual piping sections.
  • the flow guide walls can preferably be provided with beads to further reduce the flow of hot fluid flowing by at the side of the bundle of tubes.
  • the invention also relates to a heat engine having a heat transfer arrangement in accordance with one of the above embodiments, having an expansion machine and having a condenser for cooling the working fluid, with the working fluid being conducted in a cycle, in particular in a Rankine cycle, through the heat transfer arrangement, the expansion machine and the condenser.
  • the heat transfer arrangement can thus so-to-say work both as a vaporizer and as a super heater, with the working fluid being heated, vaporized and superheated with the aid of the thermal energy of the hot fluid.
  • the thermal energy thereby stored in the working fluid is converted into technically usable mechanical energy in the expansion machine.
  • the working fluid is subsequently recondensed in the condenser, recooled and finally again supplied to the heat transfer arrangement.
  • the invention further relates to an exhaust gas system for an internal combustion engine into which a heat transfer arrangement as described above is integrated.
  • FIG. 1 shows a perspective view of a heat transfer arrangement in accordance with a first embodiment of the invention
  • FIG. 2 shows a heat transfer arrangement in accordance with a second embodiment of the invention.
  • FIG. 3 shows a heat transfer arrangement in accordance with a third embodiment of the invention.
  • a heat exchanger comprises a bundle of tubes 11 which in the present embodiment is composed of twenty-four tube coils arranged next to one another and fed individually with a working fluid.
  • Each tube coil 12 comprises a plurality of straight piping sections 13 which are arranged above one another, which extend in parallel to one another, which each extend in parallel to a longitudinal direction L and which are connected by means of slanted U-shaped bends 14 .
  • the bundle of tubes 11 is configured for assembly in a fluid passage, not shown, for example in a muffler housing of an exhaust gas train. The hot exhaust gas flows along a main direction of flow S through the fluid passage and impacts the arrangement of piping sections 13 .
  • An effective heat transfer hereby takes place from the hot exhaust gas to the working fluid conducted in the tube coils 12 .
  • the working fluid can be vaporized and superheated in this manner so that it can subsequently perform mechanical work in an expansion machine.
  • the working fluid is subsequently condensed, recooled and again supplied to the bundle of tubes 11 .
  • the fastening of the bundle of tubes 11 in the fluid passage takes place by means of a support structure 15 which comprises two holding rings 15 a , 15 b separated from one another.
  • the holding rings 15 a, 15 b are configured as areal and extend in a respective transverse plane extending at a right angle to the longitudinal direction L. In this manner, the flow of the exhaust gas is only minimally impeded along the main direction of flow S.
  • the outer extent of the holding rings 15 a, 15 b is configured for a fixed connection to the fluid passage and is especially adapted to the geometry of the passage wall. An adaptation of the support structure 15 to different construction shapes of fluid passages can thus take place by a simple replacement of the holding rings 15 a, 15 b.
  • Two oppositely disposed clamps 23 are welded at the flat side to each of the holding rings 15 a, 15 b. Before the welding, the clamps 23 can be moved toward one another by means of two threaded bars 25 and associated nuts 37 .
  • An arrangement of stacked elongate spacer rails 19 is located between the two clamps 23 and the spacer rails are each led between the horizontal planes of the bundle of tubes 11 and cut-outs 21 are provided in them for leading through the piping sections 13 which are disposed next to one another.
  • U-shaped section rails 29 each engage around the threaded bars 25 and so provide a correct alignment of the spacer rails 19 relative to one another.
  • the spacer rails 19 can be tensioned with respect to one another by tightening the nuts 27 , with the piping sections 13 being clamped in the cut-outs 21 .
  • Each piping section 13 is thus received and held relative to the support structure 15 at a first support point 17 a and at a second support point 17 b spaced apart therefrom in the longitudinal direction L.
  • the extent of the clamping of the piping sections 13 in the cut-outs is selected such that each piping section 13 is held immovably at the first support part 17 a, whereas a certain movement clearance is present in the axial direction, that is in the longitudinal direction L, at the second support point 17 b.
  • All the first support points 17 a in this respect lie in the transverse plane defined by the holding ring 15 a disposed at the left in the drawing, whereas all the second support points 17 b lie in the transverse plane defined by the holding ring 15 b disposed at the right.
  • FIG. 2 A further embodiment of a heat exchanger in accordance with the invention is shown in FIG. 2 , with this embodiment having the same design in principle as the arrangement in accordance with FIG. 1 .
  • flow guide walls 30 are provided at both sides of the bundle of tubes 11 in order better to conduct the hot exhaust gas flow through the bundle of tubes 11 .
  • Beads 31 provided in the flow guide walls 30 each project into the intermediate spaces between adjacent tube coils 12 and thus reduce an unwanted flowing past of the exhaust gas at the side.
  • FIG. 3 shows a further embodiment of a heat exchanger in accordance with the invention, with here, instead of the screw connection formed by threaded bars 25 and nuts 27 , the U-shaped section rails 29 themselves being welded to the clamps 23 and, optionally, with the spacer rails 19 .
  • the respective arrangement of clamps 23 , spacer rails 19 and section rails 29 is preloaded in a suitable clamping apparatus for this purpose and is welded in the clamped state.
  • the connection of the section rails 29 to the spacer rails 19 can in this respect take place point by point or over a full area.

Landscapes

  • 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)
  • Exhaust Silencers (AREA)
US14/346,089 2011-09-20 2012-08-17 Heat transfer arrangement Abandoned US20150053382A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011113788A DE102011113788A1 (de) 2011-09-20 2011-09-20 Wärmeübertragungsanordnung
DE102011113788.6 2011-09-20
PCT/EP2012/066058 WO2013041315A1 (de) 2011-09-20 2012-08-17 Wärmeübertragungsanordnung

Publications (1)

Publication Number Publication Date
US20150053382A1 true US20150053382A1 (en) 2015-02-26

Family

ID=46690519

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/346,089 Abandoned US20150053382A1 (en) 2011-09-20 2012-08-17 Heat transfer arrangement

Country Status (5)

Country Link
US (1) US20150053382A1 (zh)
CN (1) CN103782124B (zh)
BR (1) BR112014006444A2 (zh)
DE (1) DE102011113788A1 (zh)
WO (1) WO2013041315A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3545537A (en) * 1968-12-13 1970-12-08 Combustion Eng Anti-vibration tube support for vertical steam generator
US4342360A (en) * 1980-10-31 1982-08-03 Phillips Petroleum Company Rod baffled heat exchanger
US4702311A (en) * 1985-05-03 1987-10-27 Technos Et Compagnie Methods and devices for fastening bundles of tubes together
US6772832B2 (en) * 2002-04-23 2004-08-10 Babcock & Wilcox Canada, Ltd. Heat exchanger tube support bar

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090345A (en) * 1936-09-23 1937-08-17 Joseph A Coy Heat exchanger
US3422884A (en) * 1966-12-28 1969-01-21 Baldwin Lima Hamilton Corp Condenser tube bundles
IT960259B (it) * 1972-04-20 1973-11-20 Roma C Pascio tubiero per scambiatori di calore ed elementi modulari per detto costituiti da tubi termopla stici e procedimento di costruzio ne degli elementi modulari e dei fasci tubieri
NO132704C (zh) * 1973-04-10 1975-12-17 Norsk Hydro As
US4204570A (en) * 1978-02-23 1980-05-27 Foster Wheeler Energy Corporation Helical spacer for heat exchanger tube bundle
US4368695A (en) * 1981-05-28 1983-01-18 Exxon Research And Engineering Co. Supporting the weight of a structure in a hot environment
FR2711419B1 (fr) * 1993-10-20 1996-02-02 Framatome Sa Dispositif de calage antivibratoire de tubes d'un échangeur de chaleur et utilisation.
US5460511A (en) * 1994-05-04 1995-10-24 Grahn; Dennis Energy efficient afterburner
JP3822279B2 (ja) * 1996-05-22 2006-09-13 臼井国際産業株式会社 Ｅｇｒガス冷却装置
JP3693614B2 (ja) * 2002-01-30 2005-09-07 株式会社イズミフードマシナリ 多管式熱交換器およびその製造方法
FR2889504B1 (fr) * 2005-08-05 2007-10-26 Renault Sas Ensemble integre pour dispositif de climatisation de vehicule automobile
EP2041419B1 (de) * 2006-07-06 2016-09-07 MAHLE Behr GmbH & Co. KG Abgaskühler, insbesondere für ein kraftfahrzeug
JP4939980B2 (ja) * 2007-03-02 2012-05-30 Ｕｄトラックス株式会社 Ｅｇｒクーラ
WO2008125485A1 (fr) * 2007-04-13 2008-10-23 Valeo Termico S.A. Echangeur de chaleur pour gaz, et son procede de fabrication correspondant
DE102008046690A1 (de) * 2007-09-11 2009-03-12 Behr Gmbh & Co. Kg Wärmetauscher, insbesondere für ein Kraftfahrzeug
US20100230081A1 (en) * 2008-01-09 2010-09-16 International Mezzo Technologies, Inc. Corrugated Micro Tube Heat Exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3545537A (en) * 1968-12-13 1970-12-08 Combustion Eng Anti-vibration tube support for vertical steam generator
US4342360A (en) * 1980-10-31 1982-08-03 Phillips Petroleum Company Rod baffled heat exchanger
US4702311A (en) * 1985-05-03 1987-10-27 Technos Et Compagnie Methods and devices for fastening bundles of tubes together
US6772832B2 (en) * 2002-04-23 2004-08-10 Babcock & Wilcox Canada, Ltd. Heat exchanger tube support bar

Also Published As

Publication number Publication date
BR112014006444A2 (pt) 2017-03-28
CN103782124A (zh) 2014-05-07
WO2013041315A1 (de) 2013-03-28
CN103782124B (zh) 2016-03-30
DE102011113788A1 (de) 2013-03-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FRIEDRICH BOYSEN GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BURKHARDT, BERND;REEL/FRAME:033728/0751

Effective date: 20140729

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION