WO2008119528A1 - Échangeur thermique de sécurité - Google Patents

Échangeur thermique de sécurité Download PDF

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Publication number
WO2008119528A1
WO2008119528A1 PCT/EP2008/002530 EP2008002530W WO2008119528A1 WO 2008119528 A1 WO2008119528 A1 WO 2008119528A1 EP 2008002530 W EP2008002530 W EP 2008002530W WO 2008119528 A1 WO2008119528 A1 WO 2008119528A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
heat exchanger
safety
exchanger according
safety heat
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.)
Ceased
Application number
PCT/EP2008/002530
Other languages
German (de)
English (en)
Inventor
Jürgen Lessing
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP08734893A priority Critical patent/EP2118607A1/fr
Publication of WO2008119528A1 publication Critical patent/WO2008119528A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • 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
    • F28D7/0008—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 for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0016—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 for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being bent
    • 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
    • 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
    • F28F2013/005—Thermal joints
    • F28F2013/006—Heat conductive materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling

Definitions

  • the present invention relates to a safety heat exchanger for heat exchange between at least two media, each medium being assigned a separate piping system.
  • safety heat exchangers are, in addition to the above-mentioned safety aspects, above all their robustness and economic efficiency. It is therefore an object of the invention to provide a safety heat exchanger of the type mentioned, on the one hand inexpensive to manufacture and robust, on the other hand also allows efficient heat exchange between the at least two media of the safety heat exchanger.
  • each medium is assigned a separate piping system.
  • the piping systems are spaced apart from each other and are in heat-conducting contact with one another via heat transfer elements.
  • the safety heat exchanger has a housing closed on all sides, which at least partially surrounds the piping systems and the heat transfer elements, in order to prevent an air exchange between the interior of the housing and the environment as far as possible.
  • the housing has at least one gas-permeable pressure equalization opening for a permanent pressure equalization between the interior of the housing and the environment.
  • the safety heat exchanger is enveloped in a pressure-compensating manner. There is thus no completely gas-tight enclosure provided, even on the possibility of pressure measurement or pressure monitoring in the interior of the housing is omitted.
  • a compensation of pressure differences between the interior of the housing and the surrounding area is possible via a permanently gas-permeable pressure equalization opening, for example in order to compensate for thermally induced pressure differences or to allow volumetric expansions in the evaporation of liquids in the interior which are not intended in the interior ( eg due to production or due to frost formation during operation).
  • the heat transfer elements run parallel to one another along a respective main extension plane.
  • the at least one pressure equalization opening is formed in this embodiment, for example, at a portion of the housing, which is arranged substantially parallel to the main extension planes of the heat transfer elements, typically at an end face of the housing.
  • the heat transfer elements of the safety heat exchanger are plate-like elements which are arranged in parallel in a stack.
  • the pressure equalization holes on the parallel to the Extension planes of the plate-like elements lying housing sides are arranged, only the outer sides of the two outermost plates are flowed around by an air flow of the ambient air. An undesirable flow of air, in particular in the interior of the plate stack, can not arise in this way. However, a pressure equalization and a sufficiently good ventilation of the interior of the housing are still ensured.
  • the at least one pressure compensation opening may also be formed on another portion of the housing.
  • a gap between two adjacent wall portions of the housing is formed, for. B. between a side surface and a lid portion of the housing, or between an end face and one or more side surfaces of the housing, or between a side surface and a bottom trough or bottom plate of the housing.
  • the at least one pressure equalization port is provided, and / or if only a single pressure equalization port is provided, a steady stream of air is particularly effectively avoided. This provides pressure equalization and adequate ventilation for most applications without undesirably high heat exchange with the environment.
  • the housing is formed by a pipe section, on whose end faces terminating elements are arranged.
  • the pipe section has in particular a rectangular or circular cross-section.
  • Such pipe sections are cost-effective construction elements which are well suited for the purpose described here.
  • Both End elements may be, for example, cover-like elements which are inserted from the outside onto the pipe section.
  • Another embodiment comprises a plate which is inserted into the tube section in order to close it and thus to form the housing closed on all sides.
  • the housing is at least partially formed by two or more layers of different or similar materials and / or the housing is at least partially made of plastic.
  • Plastic-metal composites have proven to be particularly suitable. Parts of the housing - or the entire housing - may be formed by plastic foam.
  • plastics and / or composite materials which may be multi-layered, allows the cost-effective production of stable housing, which may have a number of other advantageous properties.
  • the housing can, for example, also have a flame-retardant and / or current-insulating effect.
  • An embodiment of the safety heat exchanger according to the invention has a liquid collecting device, which is arranged in the operating position of the safety heat exchanger on the underside of the housing. Any resulting condensate or a leaking in a malfunction medium can be collected and discharged in a simple and safe way.
  • a closable access opening may be provided which allows access to the interior of the housing.
  • Such Access opening can be configured for example as a flap. It is also possible that this opening is formed by one or more side walls of the housing, which can be completely removed.
  • the housing may have a plurality of supply openings traversed by connection pipes for connecting the piping systems to a respective circuit of the respective medium or portions of the piping systems.
  • Fig. 1 is a schematic perspective view of a heat exchange unit of a safety heat exchanger
  • Fig. 2 is a side view of the heat exchange unit according to
  • FIG. 3 shows a schematic perspective view of an embodiment of a safety heat exchanger according to the invention
  • 4a shows a schematic representation of an embodiment of the safety heat exchanger according to the invention with a housing having a circular cross-section; 4b and c are schematic representations of various embodiments of a front cover of the housing;
  • FIG. 5 shows a cross section through an embodiment of the safety heat exchanger according to the invention
  • FIG. 6 shows a detail view of a section through an embodiment of the inventive safety heat exchanger.
  • FIG. 1 shows a heat exchange unit 10 for heat exchange between two different media routed in separate piping systems. There is no fluid connection between the piping systems.
  • Each of the piping systems has an inlet 12 or 12 'and an outlet 14 or 14' for the respective media, which are arranged on an end face of the heat exchange unit 10.
  • Connecting pieces 16 connect parallel pipes 22, 22 '(see FIG. 2) of the respective piping system to the end faces of the heat exchange unit, whereby the two media are guided past each other several times.
  • the tubes 22, 22 'of the piping systems are connected to each other with a plurality of juxtaposed heat conducting plates 18.
  • the heat conducting plates 18 are made of a good heat conductor, such as metal, and thus contribute to the improved heat transfer between the piping systems of the safety heat exchanger.
  • the heat-conducting plates 18 are arranged substantially plane-parallel.
  • At the end faces of the heat exchange unit 10 are end plates 20 are provided, which form the respective end of the heat conducting plate stack.
  • the end plates 20 are made slightly thicker than the heat conducting plates 18, since they make a contribution to the stability of the heat exchange unit 10 in addition to their function as a heat conductor.
  • the end plates 20 may also be made of a different material than the heat conducting plates 18 in order to better meet their support function.
  • Fig. 2 shows a side view of the heat exchange unit 10 according to Fig. 1.
  • the arrangement of the tubes 22, 22 'of the separate piping systems becomes clear.
  • Each of the piping systems comprises eight tubes 22, 22 '. Of these eight tubes 22, 22 'are each two in Fig. 2 can be seen.
  • the tubes 22, 22' are connected in two groups, through which a respective medium flows.
  • the tubes 22, 22 ' In order to improve the heat exchange between the different temperature levels of the media, the tubes 22, 22 'in a regular arrangement - in this embodiment, in an orthogonal grid of 4 x 4 tubes 22, 22' - led past each other. Although the tubes 22, 22 'are in spatial proximity to one another, they are deliberately spaced apart from one another. The interspaces prevent interference of a pipeline system on the other piping system. Especially when using different rather, possibly chemically reactive media, this represents a significant security aspect.
  • all components of the heat exchange unit IO made of metal, in particular made of copper or a copper alloy, wherein for the components and different materials can be used.
  • FIG. 3 shows a safety heat exchanger 24 whose heat exchange unit 10 is enveloped according to the invention by a housing 26 closed on all sides. Only the inlets 12, 12 'and outlets 14, 14' protrude from the housing 26.
  • the illustrated embodiment of the safety heat exchanger 24 thus has a complete enclosure of the heat exchange unit 10. In special applications, it may be provided that the housing 26 encloses only certain parts of the heat exchange unit 10 on all sides.
  • the housing 26 has a revision flap 28, which allows access to the interior of the housing 26. This greatly simplifies the control and maintenance of the heat exchange unit 10.
  • the housing 26 As a pressure equalization openings for a permanent pressure equalization between the interior of the housing 26 and the environment with minimal exchange of air with the environment, the housing 26, for example, several ventilation slots 30 on.
  • the ventilation slots 30 are arranged on end faces 32 of the housing 26.
  • the end faces 32 extend substantially plane-parallel to the end plates 20 of the heat exchange unit 10. Since the end plates 20 extend over a majority of the area of the inner cross-section of the housing 26, no undesirable air flows are formed inside the safety heat exchanger. shear 24, which would cause a lowering of the efficiency of the safety heat exchanger 24 heat dissipation.
  • a circular pressure equalization opening can generally also be provided, for example.
  • a single pressure compensation opening 30 may be provided, and / or the pressure compensation openings 30 are provided on a single end face 32 or on a single other housing portion in order to avoid an unwanted continuous air flow.
  • FIG. 4a Another embodiment of the safety heat exchanger 24 is shown in FIG. 4a.
  • the housing 26 does not correspond in this case the basic shape of a cuboid, but has substantially a Hohlzylin- derform. That is, a tubular section having a circular cross-section forms the base of the housing 26 in which the heat exchange unit 10 is arranged, symbolically represented by parallel plates. Such a design is characterized by high functionality and cost-effective production.
  • the ends of the tube section can be closed by covers 33 which are placed on the openings of the tube cylinder, as outlined in Fig. 4b. It is also possible to fill the two tube openings with a plastic foam or insert end plates 33a (see Fig. 4c) in the tube openings.
  • FIGS. 4b and 4c For reasons of clarity, the illustration of the heat exchange unit 10 in the interior of the housing 26 has been dispensed with in FIGS. 4b and 4c.
  • the pressure equalization opening may be formed by a gap 31 between the housing 26 and the cover 33 (FIG. 4b) or the end plate 33a ( Figure 4c) is formed along part or along the full circumference of the housing 26.
  • FIG. 5 shows a cross section parallel to a heat conducting plate 18 of a cuboid safety heat exchanger 24.
  • the two piping systems of the safety heat exchanger 24 are composed of the tubes 22 and 22 ', which are symbolized by circles or circles with an X.
  • Clearly visible is the 4 ⁇ 4 matrix arrangement of the tubes 22, 22 '.
  • the tubes 22 and 22 ' are arranged alternately both in rows and rows.
  • the housing 26 consists of a plurality of composite plates 34 which are interconnected by brackets 36.
  • the underside of the housing 26 is formed by a bottom tray 38, which is provided for collecting condensation or possibly outflowing media.
  • the floor pan 38 has a drain 40 for the controlled removal of the collected liquids.
  • the joints 39 between the composite panels 34 and / or the bottom plate 38 are not sealed gas-tight.
  • the remaining openings provide the necessary pressure equalization between the interior of the housing 26 and the environment without any air exchange with the environment to an extent that would interfere with the heat exchange between the media carried in the tubes 22, 22 '.
  • the housing 26 is connected to the heat exchange unit 10 by support members (not shown). It can also be provided that individual heat conducting plates 18 and in particular the end plates 20 act as supporting elements. Preferably, a heat insulator is between the supporting elements of the heat exchange unit 10 and the housing 26 are arranged to minimize a conductive heat flow.
  • FIG. 6 shows further details of the safety heat exchanger 24.
  • a section of a section along a tube 22 is shown.
  • the left end of the tube 22 is formed by the flange-shaped configured inlet 12.
  • This is followed by a coupling piece 42, which extends through a through hole 44 through the composite plate 34 of the housing 26.
  • the coupling piece 42 can be connected to other components of a system, which is associated with the safety heat exchanger 24.
  • the composite panel 34 is a polyurethane (PU) panel composed of an outer panel 34a, an inner panel 34b, and an insulating polyurethane layer 34c disposed therebetween.
  • PU polyurethane
  • Such PU panels are characterized by high stability and a good insulation effect.
  • the gap between the passage opening 44 and the coupling piece 42 is not hermetically sealed, since a gas-tight closure of the housing 26 is currently not provided.
  • Fig. 6 also shows an embodiment of the connection between the heat exchange elements and the piping systems of the safety heat exchanger 10. It is exemplified the connection between a face plate 20 and a heat conducting plate 18 and a pipe 22. To improve the thermal coupling, both the front plate 20 and the heat-conducting plate 18 have a base 19. The pedestals 19 of adjacent plates 18, 20 adjoin one another directly, so that a direct contact of the tube 22 with the ambient air is largely avoided. This represents an additional measure for increasing the efficiency of the safety heat exchanger 24. LIST OF REFERENCE NUMBERS

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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)

Abstract

L'invention concerne un échangeur thermique de sécurité (24) destiné à l'échange thermique entre au moins deux fluides, un système de tubulures séparé (22, 22') étant affecté à chaque fluide. Les systèmes de tubulures sont espacés spatialement l'un de l'autre et se trouvent en contact thermique au moyen d'éléments de transfert thermique (18, 20). L'échangeur thermique de sécurité présente un boîtier (26) fermé de toutes parts entourant au moins partiellement les systèmes de tubulures et les éléments de transfert thermique de manière à éviter essentiellement tout échange d'air entre l'intérieur du boîtier et l'environnement. Le boîtier comporte au moins une ouverture de compensation de pression (30) perméable aux gaz pour la compensation de pression continue entre l'intérieur du boîtier et l'environnement.
PCT/EP2008/002530 2007-04-03 2008-03-31 Échangeur thermique de sécurité Ceased WO2008119528A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08734893A EP2118607A1 (fr) 2007-04-03 2008-03-31 Échangeur thermique de sécurité

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710016106 DE102007016106A1 (de) 2007-04-03 2007-04-03 Sicherheitswärmetauscher
DE102007016106.0 2007-04-03

Publications (1)

Publication Number Publication Date
WO2008119528A1 true WO2008119528A1 (fr) 2008-10-09

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ID=39586200

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/002530 Ceased WO2008119528A1 (fr) 2007-04-03 2008-03-31 Échangeur thermique de sécurité

Country Status (3)

Country Link
EP (1) EP2118607A1 (fr)
DE (1) DE102007016106A1 (fr)
WO (1) WO2008119528A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112044205A (zh) * 2020-08-14 2020-12-08 中材株洲水泥有限责任公司 一种防堵塞熟料水泥生产线废气处理装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110088881A1 (en) * 2009-10-16 2011-04-21 Tai-Her Yang Heat absorbing or dissipating device with piping staggered and uniformly distributed by temperature difference
CN108019877A (zh) * 2017-11-24 2018-05-11 苏州赛易特环保科技有限公司 一种室内外换风装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458140A1 (de) * 1974-12-09 1976-06-10 Rupp Ottmar Hochdruck-waermeaustauscher
US3999602A (en) * 1975-10-21 1976-12-28 The United States Of America As Represented By The United States Energy Research And Development Administration Matrix heat exchanger including a liquid, thermal couplant
GB2001422A (en) * 1977-07-22 1979-01-31 Carrier Corp Heat exchangers
US20040108096A1 (en) * 2002-11-27 2004-06-10 Janssen Terrance Ernest Geothermal loopless exchanger
EP1580510A1 (fr) * 2004-03-22 2005-09-28 Jürgen Lessing Planungsbüro für Kältetechnik Echangeur de chaleur
EP1610082A1 (fr) * 2004-06-25 2005-12-28 GEA Ergé-Spirale et Soramat, S.A Dispositif de régulation de la température d'un fluide à traiter
WO2007059770A1 (fr) * 2005-11-25 2007-05-31 Eurotec London Ltd Module d’échangeur de chaleur et système d’échangeur de chaleur

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458140A1 (de) * 1974-12-09 1976-06-10 Rupp Ottmar Hochdruck-waermeaustauscher
US3999602A (en) * 1975-10-21 1976-12-28 The United States Of America As Represented By The United States Energy Research And Development Administration Matrix heat exchanger including a liquid, thermal couplant
GB2001422A (en) * 1977-07-22 1979-01-31 Carrier Corp Heat exchangers
US20040108096A1 (en) * 2002-11-27 2004-06-10 Janssen Terrance Ernest Geothermal loopless exchanger
EP1580510A1 (fr) * 2004-03-22 2005-09-28 Jürgen Lessing Planungsbüro für Kältetechnik Echangeur de chaleur
EP1610082A1 (fr) * 2004-06-25 2005-12-28 GEA Ergé-Spirale et Soramat, S.A Dispositif de régulation de la température d'un fluide à traiter
WO2007059770A1 (fr) * 2005-11-25 2007-05-31 Eurotec London Ltd Module d’échangeur de chaleur et système d’échangeur de chaleur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112044205A (zh) * 2020-08-14 2020-12-08 中材株洲水泥有限责任公司 一种防堵塞熟料水泥生产线废气处理装置
CN112044205B (zh) * 2020-08-14 2021-10-01 中材株洲水泥有限责任公司 一种防堵塞熟料水泥生产线废气处理装置

Also Published As

Publication number Publication date
DE102007016106A1 (de) 2008-10-09
EP2118607A1 (fr) 2009-11-18

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