EP3914872B1 - Module d'échangeur thermique, système d'échangeur thermique et procédé de fabrication du système d'échangeur thermique - Google Patents

Module d'échangeur thermique, système d'échangeur thermique et procédé de fabrication du système d'échangeur thermique Download PDF

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Publication number
EP3914872B1
EP3914872B1 EP20720767.1A EP20720767A EP3914872B1 EP 3914872 B1 EP3914872 B1 EP 3914872B1 EP 20720767 A EP20720767 A EP 20720767A EP 3914872 B1 EP3914872 B1 EP 3914872B1
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EP
European Patent Office
Prior art keywords
heat exchanger
feed line
supply pipe
line
fluid
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EP20720767.1A
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German (de)
English (en)
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EP3914872A1 (fr
Inventor
Thomas Uhrig
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Uhrig Energie GmbH
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Uhrig Energie GmbH
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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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes

Definitions

  • the invention relates to a heat exchanger module, a heat exchanger system and a method for producing a heat exchanger system for, in particular subsequent, installation in a sewage pipeline.
  • Energy production from waste water by heat exchangers subsequently installed in the waste water pipeline is, for example, from DE 10 2005 048 689 A1 known.
  • heat exchange fluid piping for inflow into and outflow from the heat exchanger is mounted below drain surfaces and is thus protected from contamination by the waste water. This has no negative impact on heat generation, since in the known heat exchanger only the upper side comes into contact with the waste water.
  • the FR 2 954 819 A1 discloses an apparatus for extracting heat from a sewage collector, comprising a heat exchanger intended for immersion in the sewage stream and connection means between a heat transfer fluid circuit in the heat exchanger and heat transfer fluid inlet and return lines. Also disclosed is a system of heat transfer fluid channels associated with the heat exchanger, the system being connected to the heat exchanger.
  • the invention comprises a heat exchanger module for installation in a waste water pipeline, having a flow line section and a return line section which are fluidically connected to a heat exchanger chamber of the heat exchanger module, the respective flow line sections of a plurality of heat exchanger modules being fluidically connectable to one another to form a flow line and the respective return line sections of a plurality of heat exchanger modules to one another Return line can be fluidically connected and within the flow line section a feed line can be arranged or is arranged, by means of which the flow line section can be fed or fed with a heat exchanger fluid.
  • An advantage of the present invention is that a space-saving heat exchanger module is made available, which is particularly suitable for use in cramped and/or restricted spaces such as a sewer.
  • the available space can be better utilized in such a way that more space can be occupied by the heat exchanger chamber compared to a conventional heat exchanger module in which a feed line is provided outside the flow line section.
  • a heat exchanger module with increased heat exchange performance can thus be used with the same space conditions.
  • a further advantage of the present invention is that the heat exchanger module has a smaller cross-sectional area, which ensures a better flow of waste water and a lower tendency of the heat exchanger module to become soiled, particularly when used in a sewer.
  • Another advantage of the present invention is that the feed line, in particular possible connection points of a multi-part feed line, is better protected against dirt and/or damage.
  • the heat exchanger module can contain at least one heat exchanger element with a heat exchanger chamber and can be used, for example, for heat recovery from cooling water from power plants, for storing solar energy in hot water buffers or for heat recovery from waste heat - in particular from waste water - from buildings, machines or other systems.
  • air or a gas or gas mixture can flow around the heat exchanger element at least in sections.
  • a sewage pipeline may be a pipeline for collecting and guiding sewage, wherein a sewage flow direction is parallel to or coincident with the longitudinal direction of the sewage pipeline.
  • the sewage flow direction is usually determined by a slope of the sewage pipeline and basically runs parallel to the longitudinal direction described above or coincides with it.
  • a sewage pipeline can also be an open sewage channel within the meaning of the present invention.
  • the flow line section can be a section of a flow line, wherein the flow line section and/or the flow line can be designed as a closed line or as an open channel. The same applies to the return line section and/or the return line.
  • the feed line can be designed as a closed line or as an open channel, from which the flow line section and/or the flow line or the return line section and/or the return line can be fed or is fed with the heat exchanger fluid. It is basically described that the feed line can be arranged or is arranged in the flow line section and/or in the flow line. The associated advantages can also be achieved if, as an alternative to this, the feed line can be arranged or is arranged accordingly in the return line section and/or the return line.
  • the heat exchange fluid can be water, in particular waste water, air or a gas or gas mixture.
  • upstream In the context of this description, the terms “upstream”, “downstream” and the like are to be understood in relation to the direction of flow of a medium described in each case, optionally in a line described in each case.
  • outside or inside and the like used in the context of the present invention mean that a center point, particularly an idealized or imagined center point, is an innermost point.
  • An outer area in relation to this is an, in particular idealized or imaginary, peripheral area which at least partially surrounds the center point.
  • a point or region that is designated as being more outward than another point or region is radially further from the center toward the circumferential region than the other point or region that is more inward.
  • the terms “above” or “above” and the like mean a direction and/or a position of an element in relation to another element counter to the direction of gravity.
  • the terms “below” or “below” and the like used below mean a direction and/or a position of one element in relation to another element in the direction of gravity.
  • a cross-sectional area of the flow line section minus a cross-sectional area of the feed line can be approximately the same size as the cross-sectional area of the feed line.
  • a flow resistance in the flow line section can thus be kept approximately the same as a flow resistance in the feed line.
  • the feed line can be designed in one piece.
  • a leak-prone connection point of an otherwise multi-piece feed line within the flow line section can be avoided.
  • a fluid flow of the heat exchange fluid in the feed line can be directed in the opposite direction to a fluid flow of the heat exchange fluid in the flow line section.
  • the flow line section can be fed with the heat exchanger fluid at a downstream end of the feed line.
  • the heat exchange fluid traverses the entire feed line before entering the delivery line section, from which the heat exchange fluid enters the individual heat exchange modules.
  • the feed line can be or can be arranged concentrically in the flow line section, in particular by means of guide rings and/or spacers.
  • an outer circumference of the feed line can touch an inner circumference of the feed line section at least in sections.
  • a concentric or eccentric position of the feed line with respect to the delivery line section can be achieved by means of guide rings and/or spacers which can be integrally formed on the feed line.
  • guide rings and/or spacers which can be integrally formed on the feed line.
  • the feed line can be made of plastic. Increased durability and/or easier handling of the feed line, in particular when introducing the feed line into the flow line section, can thus be ensured.
  • Another aspect relates to a heat exchanger system with a modular structure, having a plurality of heat exchanger modules arranged one behind the other, each heat exchanger module having a feed line section and a return line section which are fluidically connected to a heat exchanger chamber of the heat exchanger module, the respective feed line sections of the individual heat exchanger modules being fluidically connected to one another to form a feed line and the respective return line sections of the individual heat exchanger modules are fluidically connected to one another to form a return line, and wherein a feed line is arranged within the feed line, by means of which the feed line can be fed or is fed with a heat exchanger fluid.
  • an advantage of the heat exchanger system according to the invention is that laying the heat exchanger system is simplified, in particular because of a simplified introduction of the feed line into the flow line of heat exchanger modules that have already been laid. In particular, it is therefore possible to dispense with a separate connection of feed line sections that are otherwise present in each heat exchanger module.
  • the plurality of heat exchanger modules arranged one behind the other can be fluidically connected in parallel with one another.
  • the heat exchanger modules arranged one behind the other can follow a course of the sewage pipeline in which they are laid, for example.
  • a fluid flow of the heat exchange fluid in the feed line can be directed in the opposite direction to a fluid flow of the heat exchange fluid in the supply line.
  • the feed line can be fed with the heat exchanger fluid at a downstream end of the feed line.
  • the heat exchange fluid traverses the entire feed line before entering the delivery line, from which the heat exchange fluid enters the individual heat exchange modules.
  • a sum of the lengths of the feed line, flow line and return line in each heat exchanger module can be approximately the same.
  • a so-called Tichelmann system Tichelmann's pipework
  • the pipes in a heating system from the heat generator (e.g. boiler, solar system) to the heat consumer (e.g. radiator, hot water tank) and back are laid in a ring so that the sum of the lengths of flow and return is is about the same size for each radiator.
  • a connection according to "Tichelmann” also means that the zeta values (pressure loss coefficients) of the pipe fittings for connecting several identical components (usually hot water tanks or solar collectors) are the same in total for each individual component, so that an even flow is guaranteed (source : Wikipedia https://de.wikipedia.org/wiki/Tichelmann-System).
  • a cross-sectional area of the flow line minus a cross-sectional area of the feed line can be approximately the same size as the cross-sectional area of the feed line.
  • a flow resistance in the supply line can thus be kept approximately the same as a flow resistance in the feed line.
  • the feed line can be formed in one piece.
  • a leak-prone connection point of an otherwise multi-piece feed line within the flow line can be avoided.
  • This configuration can also be used to further simplify laying of the heat exchanger system, since the introduction of the one-piece feed line into the flow line of the heat exchanger modules that have already been laid means a considerable simplification, especially if the feed line is virtually endless, i.e. in the form of a 100 m roll, for example.
  • a separate connection of feed line sections that are otherwise present for each heat exchanger module can therefore be dispensed with.
  • the feed line can be arranged concentrically in the flow line, in particular by means of guide rings and/or spacers.
  • an outer circumference of the feed line can touch an inner circumference of the flow line at least in sections.
  • a concentric or eccentric position of the feed line with respect to the delivery line can be achieved by means of guide rings and/or spacers which can be integrally formed on the feed line. This makes it easier to insert the feed line into the flow line and/or to maintain the desired position of the feed line in the flow line. It goes without saying that an external geometry of the guide rings and/or spacers is adapted to an internal geometry of the supply line and that an internal geometry of the guide rings and/or spacers is adapted to an external geometry of the feed line.
  • the feed line can be made of plastic. Increased durability and/or easier handling of the feed line, in particular when introducing the feed line into the flow line, can thus be ensured.
  • the method described above applies correspondingly to only a single heat exchanger module.
  • the heat exchanger module 1 has a heat exchanger element with a heat exchanger chamber 2, on which a supply line section 4 and a return line section 6 are fluidically connected to the heat exchanger chamber 2 at a respective connection port 8.
  • the heat exchanger module 1 can have a plurality of heat exchanger elements which are fluidically connected to one another.
  • the supply line section 4 and the return line section 6 can also be mechanically connected to the heat exchanger chamber 2 at a respective stiffening point 10 .
  • a feed line 12 is arranged, in which a heat exchanger fluid can be introduced in an introduction direction ER.
  • the feed line 12 is in 1 shown protruding from the feed line section 4 counter to the introduction direction ER, as is the case, for example, when the feed line 12 is inserted into the feed line section 4 .
  • the flow line section 4 is designed to be open at its downstream end as seen in the introduction direction ER, just like the feed line 12, in particular for the connection of a further heat exchanger module 1.
  • the flow line section 4 can be connected to the in Introductory direction ER seen downstream end be closed.
  • the feed line 12, on the other hand, also remains open in this case at its end on the downstream side, viewed in the direction of introduction ER.
  • the downstream end of the feed line 12, viewed in the direction of introduction ER is at a distance from the end of the feed line section 4, viewed in the direction of introduction ER, downstream, counter to the direction of introduction ER, in order to allow the heat exchanger fluid to pass more easily from the feed line 12 into the feed line section 4.
  • the heat exchanger fluid flows in an inflow direction ZR, which is directed counter to the inlet direction ER, and reaches the heat exchanger chamber 2 via the connection port 8.
  • the heat exchanger chamber 2 which is heated, for example, by the waste water flowing around it, heats the heat exchanger fluid, which flows via the other connection port 8 in the return line section 6 arrives. From there, the heated heat exchange fluid can be directed, for example, into a (not shown) radiator or the like, after which it is conveyed back into the feed line 12 by a pump (not shown), for example, in order to close the circuit.
  • In 2 1 is a schematic representation of the principle of a known Tichelmann system using the example of solar collectors 18 connected in parallel.
  • the pipes from the heat generator (e.g. boiler, solar system with solar collectors 18) to the heat consumer (e.g. radiator, hot water storage tank) and back are usually routed in a ring arrangement in such a way that the total the lengths of flow 14 and return 16 for each solar panel 18 is about the same size.
  • Solar panels 18 with a short lead 14 have a long return 16 and vice versa.
  • a connection according to "Tichelmann” also means that the zeta values (pressure loss coefficients) of the pipe fittings for connecting several identical components (usually hot water tanks or solar collectors 18) are the same in total for each individual component, so that an even flow is guaranteed (source: Wikipedia https:/ /de.wikipedia.org/wiki/Tichelmann-System).
  • the colder flow 14 is shown with solid lines and the warmer return 16 is shown with dash-two-dotted lines.
  • a heat exchange fluid pump and a heat consumer for utilizing the heat in the return 16 are omitted.
  • Cold heat exchanger fluid is introduced into the flow 14 in the introduction direction ER.
  • the flow 14 has a so-called Tichelmann line 20 upstream of the flow line 24 with the connection terminals 8 to the solar collectors 18 , viewed in the direction of introduction ER.
  • the Tichelmann line 20 is designed as an extension of the flow line 24 and is designed parallel thereto.
  • the heat exchanger fluid flows in the feed line 24 in an inflow direction ZR, which is directed counter to the introduction direction ER, although a fluid flow in the feed 14 is not reversed, ie always flows in the same direction.
  • the heat exchanger fluid flows via the respective connection port 8 into the respective heat exchanger module 1 and its heat exchanger chamber 2.
  • the heated heat exchanger fluid flows back into the circuit via the return line 26.
  • the Tichelmann line 20 ensures that the path of the heat exchanger fluid in the flow 14 is extended and so the sum of the lengths of the flow 14 and return 16 is approximately the same for each solar collector 18 .
  • heat exchanger system 22 in the in 3 shown heat exchanger system 22 are several heat exchanger modules 1 according to 1 connected in parallel with the so-called "Tichelmann line" 20, whereby a feed pressure of the heat exchanger fluid can be kept approximately the same in each of the heat exchanger modules 1, without providing control valves, as already mentioned above.
  • a uniform flow and thus a uniform heat transfer from the waste water to the heat exchanger fluid in the individual heat exchanger modules 1 is thus ensured.
  • the feed line 12 shown in broken lines, is designed as a Tichelmann line 20 and is arranged inside the flow line 24.
  • the heat exchanger fluid must pass through the feed line 12 completely before it emerges from the feed line 12 at a downstream end of the feed line 12 viewed in the introduction direction ER of the heat exchanger fluid and feeds the feed line 24 with it.
  • the heat exchanger fluid flows in the inflow direction ZR and via the respective connection port 8 into the respective heat exchanger module 1 of the heat exchanger system 22 and then back again via the return line 26, for example to a heat exchanger fluid pump (not shown), at the outlet of which the feed line 24 connected.
  • the inflow direction ZR of the heat exchanger fluid in the feed line 24 is directed counter to the introduction direction ER of the heat exchanger fluid into the feed line 12, i.e. within the feed 14 the flow direction of the heat exchanger fluid is reversed.

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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)

Claims (14)

  1. Module d'échangeur de chaleur (1) destiné à être installé dans une canalisation d'eaux usées, présentant :
    une section de conduite d'arrivée (4) et une section de conduite de retour (6), qui sont reliées fluidiquement à une chambre d'échangeur de chaleur (2) du module d'échangeur de chaleur (1),
    les sections de conduite d'arrivée respectives (4) de plusieurs modules d'échangeur de chaleur (1) pouvant être reliées fluidiquement entre elles pour former une conduite d'arrivée (24) et les sections de conduite de retour respectives (6) de plusieurs modules d'échangeur de chaleur (1) pouvant être reliées fluidiquement entre elles pour former une conduite de retour (26), caractérisé en ce que
    une conduite d'alimentation (12) est agencée à l'intérieur de la section de conduite d'arrivée (4), au moyen de laquelle la section de conduite d'arrivée (4) peut être alimentée avec un fluide d'échangeur de chaleur.
  2. Module d'échangeur de chaleur (1) selon la revendication 1, dans lequel une surface de section transversale de la section de conduite d'arrivée (4) moins une surface de section transversale de la conduite d'alimentation (12) est approximativement égale à la surface de section transversale de la conduite d'alimentation (12).
  3. Module d'échangeur de chaleur (1) selon la revendication 1 ou 2, dans lequel la conduite d'alimentation (12) est réalisée en une seule pièce.
  4. Module d'échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel la conduite d'alimentation (12) est agencée de manière concentrique dans la section de conduite d'arrivée (4) ou une circonférence extérieure de la conduite d'alimentation (12) touche au moins par sections une circonférence intérieure de la section de conduite d'arrivée (4).
  5. Module d'échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel la conduite d'alimentation (12) est réalisée en matière plastique.
  6. Système d'échangeur de chaleur (22) à structure modulaire, présentant :
    plusieurs modules d'échangeur de chaleur (1) selon l'une quelconque des revendications 1 à 6, agencés les uns derrière les autres.
  7. Système d'échangeur de chaleur (22) selon la revendication 6, dans lequel un courant de fluide du fluide d'échangeur de chaleur dans la conduite d'alimentation (12) est dirigé dans la direction opposée à un courant de fluide du fluide d'échangeur de chaleur dans la conduite d'arrivée (24).
  8. Système d'échangeur de chaleur (22) selon la revendication 6 ou 7, dans lequel la conduite d'arrivée (24) est alimentée avec le fluide d'échangeur de chaleur à une extrémité aval de la conduite d'alimentation (12).
  9. Système d'échangeur de chaleur (22) selon les revendications 6 à 8, dans lequel une somme des longueurs de la conduite d'alimentation (12), de la conduite d'arrivée (24) et de la conduite de retour (26) est approximativement égale pour chaque module d'échangeur de chaleur (1).
  10. Système d'échangeur de chaleur (22) selon l'une quelconque des revendications 6 à 9, dans lequel une surface de section transversale de la conduite d'arrivée (24) moins une surface de section transversale de la conduite d'alimentation (12) est approximativement égale à la surface de section transversale de la conduite d'alimentation (12).
  11. Système d'échangeur de chaleur (22) selon l'une quelconque des revendications 6 à 10, dans lequel la conduite d'alimentation (12) est réalisée en une seule pièce.
  12. Système d'échangeur de chaleur (22) selon l'une quelconque des revendications 6 à 11, dans lequel la conduite d'alimentation (12) est agencée de manière concentrique dans la conduite d'arrivée (24) ou une circonférence extérieure de la conduite d'alimentation (12) touche au moins par sections une circonférence intérieure de la conduite d'arrivée (24).
  13. Système d'échangeur de chaleur (22) selon l'une quelconque des revendications 6 à 12 précédentes, dans lequel la conduite d'alimentation (12) est réalisée en matière plastique.
  14. Procédé de fabrication d'un système d'échangeur de chaleur (22) à structure modulaire, comprenant les étapes suivantes :
    l'agencement de plusieurs modules d'échangeur de chaleur (1) les uns derrière les autres dans une canalisation d'eaux usées,
    la prévision d'une section de conduite d'arrivée (4) et d'une section de conduite de retour (6) sur chaque module d'échangeur de chaleur (1) et la liaison fluidique de la section de conduite d'arrivée (4) et de la section de conduite de retour (6) à une chambre d'échangeur de chaleur (2) du module d'échangeur de chaleur (1),
    la liaison fluidique des sections de conduite d'arrivée respectives (4) des modules d'échangeur de chaleur individuels (1) entre elles pour former une conduite d'arrivée (24) et des section de conduite de retour respectives (6) des modules d'échangeur de chaleur individuels (1) entre elles pour former une conduite de retour (26), caractérisé par
    l'agencement d'une conduite d'alimentation (12) à l'intérieur de la conduite d'arrivée (24) pour alimenter la conduite d'arrivée (24) avec un fluide d'échangeur de chaleur.
EP20720767.1A 2019-04-15 2020-04-15 Module d'échangeur thermique, système d'échangeur thermique et procédé de fabrication du système d'échangeur thermique Active EP3914872B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019002738.8A DE102019002738A1 (de) 2019-04-15 2019-04-15 Wärmetauschermodul, Wärmetauschersystem und Verfahren zum Herstellen des Wärmetauschersystems
PCT/EP2020/060527 WO2020212383A1 (fr) 2019-04-15 2020-04-15 Module d'échangeur thermique, système d'échangeur thermique et procédé de fabrication du système d'échangeur thermique

Publications (2)

Publication Number Publication Date
EP3914872A1 EP3914872A1 (fr) 2021-12-01
EP3914872B1 true EP3914872B1 (fr) 2022-06-29

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US (1) US20220196342A1 (fr)
EP (1) EP3914872B1 (fr)
CN (1) CN113994164A (fr)
DE (1) DE102019002738A1 (fr)
WO (1) WO2020212383A1 (fr)

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DE102020003467A1 (de) 2020-06-09 2021-12-09 Uhrig Energie Gmbh Abwasser-Wärmetauschermodul, Anschlusselement, Abwasser-Wärmetauschersystem und Verfahren zu seiner Herstellung

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WO2020212383A1 (fr) 2020-10-22
DE102019002738A1 (de) 2020-10-15
EP3914872A1 (fr) 2021-12-01
CN113994164A (zh) 2022-01-28
US20220196342A1 (en) 2022-06-23

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