EP2815196B1 - Échangeur de chaleur pour une installation de chauffage ou un système de fourniture de chaleur - Google Patents

Échangeur de chaleur pour une installation de chauffage ou un système de fourniture de chaleur Download PDF

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Publication number
EP2815196B1
EP2815196B1 EP13709038.7A EP13709038A EP2815196B1 EP 2815196 B1 EP2815196 B1 EP 2815196B1 EP 13709038 A EP13709038 A EP 13709038A EP 2815196 B1 EP2815196 B1 EP 2815196B1
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EP
European Patent Office
Prior art keywords
heat exchanger
heat
medium
container
coil
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.)
Active
Application number
EP13709038.7A
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German (de)
English (en)
Other versions
EP2815196A2 (fr
Inventor
Lubor Chytil
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.)
AZ - Pokorny Trade Sro
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AZ - Pokorny Trade Sro
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Filing date
Publication date
Application filed by AZ - Pokorny Trade Sro filed Critical AZ - Pokorny Trade Sro
Priority to SI201330171A priority Critical patent/SI2815196T1/sl
Publication of EP2815196A2 publication Critical patent/EP2815196A2/fr
Application granted granted Critical
Publication of EP2815196B1 publication Critical patent/EP2815196B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag

Definitions

  • the invention relates to a use of a heat exchanger as a heat sink for a heating system or a cakesumpsssyste according to the preamble of claim 1.
  • a heat exchanger is, for example, from DE 3 519 315 A1 known.
  • Heating systems or heat supply systems often use renewable energy sources. Therefore, there is often a need to provide a medium adapted to the conditions of the connected consumer from the media arriving with different parameters in terms of quantity and medium temperature.
  • the various heat sources may be, for example, conventional boilers, thermal solar collectors, geothermal probes, or the like.
  • Heat sinks are commonly used for this task, and heat transfer between the media is achieved by means of separate conduit circuits.
  • the general task for this application is that of incoming heat in the shortest possible time a heated heating medium is generated, which corresponds to the requirements in terms of media temperature and quantity.
  • circuits must be kept separate from other circuits.
  • the circuit of a solar thermal collector contains a frost-proof medium, while in the circuit of a boiler is not necessary.
  • line circuit for heating purposes and a line circuit for process water, which have drinking water quality and therefore must be fed with fresh water.
  • the above-described objects has to provide a heat exchanger as a central element.
  • a tubular heat exchanger could be considered.
  • Known heat exchanger of this type such as in DE 36 41 139 C2 described, but are not suitable because of their inertia.
  • the volume ratio can be designed so that no unnecessary storage volume occurs in such a heat exchanger and, moreover, the separator surface is enlarged by using corrugated pipes.
  • This type of air-water heat exchanger is not suitable for use as a heat sink in heat supply systems, since it encloses the exhaust pipe for the recovery of heat from exhaust gases of a boiler and is not designed for operation with two liquid media.
  • the heat exchanger sets in within a short period of time and loses considerably in terms of efficiency, throughput and dynamics.
  • plate heat exchangers For plate heat exchangers, the calcification in the section serving the service water supply, which is constantly filled with fresh water, is unavoidable. A dry cleaning added plate heat exchanger ultimately leads to material damage and thus to a shortened life of the same. For the above reasons, plate heat exchangers are rarely used in heat supply systems.
  • a torus consisting of cold water forms, which permanently disturbs the temperature conditions within the combi store when it sinks.
  • the medium usually supplied with the highest temperature of a solar thermal collector is supplied with its own heat exchanger within the combination storage and the same arranged in both cases on the container bottom.
  • the heat exchange takes place with the cold medium present in the lower chamber, while in the Spiro combi tank from FEURON AG, a narrow spiral wound heat exchanger is additionally enclosed in a separate housing and the rise is preferred with a riser channel of the heated medium should take place in the upper region of the combination storage.
  • the object is achieved with a heat exchanger in the design of a tubular heat exchanger. This is designed so that its container volume is filled with the first medium and a second medium flows through a likewise arranged in the container tube coil.
  • the heat exchanger achieves a conversion efficiency of at least 90 percent, based on the amounts of heat supplied to the first medium and those discharged with the second medium, under the temperature conditions existing in heat supply systems.
  • the invention achieves that the container of the heat exchanger is always filled with a sufficient amount of heated first medium. If a heat requirement arises, the second medium flows through the coil and there is an intense heat exchange.
  • a tube coil which consists of a thin-walled corrugated tube.
  • Such type corrugated pipes have wall thicknesses in the range of a few tenths of a millimeter. The pipe wall thus forms an extremely thin separator, through which an intensive heat transfer can be achieved.
  • stainless steel corrugated pipes are used for the coil.
  • the reduced heat transfer in stainless steels is compensated by the small wall thickness.
  • the helically wound coil of a corrugated tube causes the transition to a turbulent flow even at a comparatively low flow velocity, whereby the exchange process is intensified to a considerable extent.
  • the coil can move in the container to a limited extent, for example as a result of thermal expansion. As a result, and due to the predominantly turbulent flows, no deposits can form in the area of the separator.
  • the container of the heat exchanger preferably has a cylindrical shape. Its length can be up to 6 times the diameter.
  • the comparatively small container volume causes the first medium to be constantly fed again and therefore also has a high flow velocity in the container. So also occurs on this page the separator a largely turbulent flow and the exchange process is additionally intensified.
  • the heat exchanger according to the invention can thus at a relatively low volume of about 60 I, an inlet temperature of the first medium of about 90 ° C, a flow rate of the first and second medium of about 3000 l / h and a temperature gradient of about 40 ° C a specific Achieve output of 750 W per 100 cm 2 separator area.
  • the performance parameters of the heat exchangers according to the invention reach those of plate heat exchangers.
  • the heat exchanger according to the invention so that the coil is fanned in the container interior to a multiple arrangement.
  • the volume ratios between the first and second medium in the heat exchanger in favor of the second medium can be influenced.
  • the plurality of pipe coils can either be guided with their individual ports to the outside and connected outside the container or branched within the container.
  • one of the tube coils can also be connected to a further heat source.
  • one of the coils may be connected to a circuit of a heat supply system which requires a different temperature level.
  • a preferred embodiment is that at least one second coil serves to connect a third medium from a heat source or from a heat consumer to the heat exchanger when the third medium may not be mixed with the first or the second medium due to special properties.
  • a heat supply system in which the heat exchanger according to the invention is used, it may be provided with a coil for the service water supply, so that the provision of hot water can be made possible in this way.
  • the heat exchanger may be provided with an electrically operated heating cartridge, which can take over either a supply of heat or only the assurance of frost protection.
  • the surface serving for heat exchange increases, hence the so-called separator surface. Furthermore, the second medium to be heated in the coil undergoes a turbulent flow through the profiled wall, which intensifies the heat exchange.
  • the heat exchanger is designed so that it has the lowest possible inertia in heat transfer based on the heat demand in the heating circuit.
  • the heat exchanger is designed to have a conversion efficiency of at least 90 percent.
  • the heat exchanger 1 consists at least of a container 2, an insulation 3 surrounding the container 2 and a tube coil 4.
  • the coil 4 is connected with its guided outward terminals 5 and 6 with a line circuit in which there are heat consumers.
  • the first medium In the interior 7 of the container 2 is the first medium, wherein the container 2 is connected via the terminals 8 and 9 with the first line circuit, are arranged in the heat generator.
  • Heat generators can be thermal solar collectors, heat pumps, boilers, geothermal probes or facilities that recover process heat.
  • a second tube coil 10 and a third coil 11 may be arranged, which may also be connected with their terminals 12 and 13 and 14 and 15 with heat consumers.
  • the coils 4, 10 and 11 may be connected to one and the same circuit. You can also feed different circuits with a heated medium.
  • only one coil 4 is arranged in the heat exchanger 1 .
  • the effectively conducted exchange process also causes a target temperature of 50 ° C in the second medium to be reached in one-tenth of the time required by a combi store known in the art.
  • the extremely low inertia of the heat exchanger 1 is achieved in addition to the measures already mentioned above, characterized in that the separator surface realized with the coil 4 has a value between 150 cm 2 - 700 cm 2 per liter of container volume.
  • the coils 4, 10 and 11 may be designed as helical coils, as helical coils or as a combination of both forms.
  • connection 16 it is also possible to carry out the connection 16 only between two of the existing coils 4, 10 and 11 , while the remaining coil is assigned to a separate line circuit. This is, for example, the preferred variant if, in addition to the heating or heat supply system, a process water treatment must take place.
  • the interconnection of the coils 4, 10 and 11 may also be performed in the interior 7 of the container 2 with a connection 17 .
  • the interconnection is carried out in the area enclosed by the insulation 3 and there are only the terminals of the coil 4 out through the insulation to the outside. This creates an effective heat exchanger with a large separator surface.
  • such a heat exchanger forms the possibility of designing various embodiments in the manner of a modular system and thus of adapting it to specific conditions of use.
  • the arrangement described above can be carried out by known means as a standing or as a hanging arrangement or as a combination of both possibilities
  • the insulation 3 of the heat exchanger 1 can be designed according to the criteria of optimal energy utilization. It may further include conduits, valves and circulation pumps. Likewise, it can be designed removable.
  • the invention thus has the advantage of proposing heat exchangers for heating or heat supply systems which operate efficiently, whose dimensions are small, which can provide low inertia heated media and otherwise can be produced inexpensively and with low material and manufacturing costs.

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)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (6)

  1. Emploi d'un échangeur de chaleur à tubes pour un échangeur de chaleur (1) pour un dissipateur de chaleur dans une installation de chauffage ou un système de fourniture de chaleur,
    sachant que
    celui-ci est composé
    d'un récipient (2) fermé,
    d'un serpentin (4) spiralé ou hélicoïdal, disposé dans le récipient (2) formé d'un tube ondulé ou d'un flexible ondulé
    ainsi que d'une isolation (3) entourant le récipient (2), sachant qu'un premier fluide caloporteur remplit l'espace intérieur (7) du récipient (2),
    le serpentin (4) contient un deuxième fluide caloporteur,
    caractérisé en ce que le volume du premier fluide dans l'espace intérieur (7) du récipient (2) fait au plus 6 fois le volume du deuxième fluide dans le serpentin (4)
    et le serpentin (4) présente une surface séparatrice d'au moins 150 cm2 rapporté à un contenu du récipient en litres.
  2. Emploi d'un échangeur de chaleur (1) selon la revendication 1, caractérisé en ce que
    celui-ci possède un volume d'environ 60 l.
  3. Emploi d'un échangeur de chaleur (1) selon la revendication 1,
    caractérisé en ce que
    le serpentin (4) est divisé en plusieurs enroulements et au moins un serpentin extérieur et un serpentin intérieur sont disposés coaxialement l'un à l'autre.
  4. Emploi d'un échangeur de chaleur (1) selon la revendication 1, caractérisé en ce qu'au moins un serpentin supplémentaire est disposé dans le récipient, lequel est relié à un circuit de conduits indépendant qui transporte un troisième fluide.
  5. Emploi d'un échangeur de chaleur (1) selon la revendication 1 caractérisé en ce que
    le troisième fluide transporté dans le serpentin supplémentaire est dirigé dans un circuit ouvert.
  6. Emploi d'un échangeur de chaleur (1) selon la revendication 4 caractérisé en ce que
    le troisième fluide apporte à l'échangeur de chaleur et/ou évacue de l'échangeur de chaleur, des quantités de chaleur.
EP13709038.7A 2012-02-17 2013-02-15 Échangeur de chaleur pour une installation de chauffage ou un système de fourniture de chaleur Active EP2815196B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201330171A SI2815196T1 (sl) 2012-02-17 2013-02-15 Izmenjevalnik toplote za ogrevalni sistem ali za sistem za dovod toplote

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101276A DE102012101276A1 (de) 2012-02-17 2012-02-17 Wärmetauscher für eine Heizungsanlage oder ein Wärmeversorgungssystem
PCT/EP2013/000450 WO2013120621A2 (fr) 2012-02-17 2013-02-15 Échangeur de chaleur pour une installation de chauffage ou un système de fourniture de chaleur

Publications (2)

Publication Number Publication Date
EP2815196A2 EP2815196A2 (fr) 2014-12-24
EP2815196B1 true EP2815196B1 (fr) 2016-04-06

Family

ID=47877983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13709038.7A Active EP2815196B1 (fr) 2012-02-17 2013-02-15 Échangeur de chaleur pour une installation de chauffage ou un système de fourniture de chaleur

Country Status (9)

Country Link
EP (1) EP2815196B1 (fr)
DE (1) DE102012101276A1 (fr)
DK (1) DK2815196T3 (fr)
EA (1) EA026850B1 (fr)
ES (1) ES2579833T3 (fr)
HU (1) HUE029432T2 (fr)
PL (1) PL2815196T3 (fr)
SI (1) SI2815196T1 (fr)
WO (1) WO2013120621A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2683059C1 (ru) * 2018-05-23 2019-03-26 Глеб Иванович Ажнов Способ извлечения и использования геотермального тепла для охлаждения грунтов вокруг тоннелей метрополитена
RU208959U1 (ru) * 2021-07-09 2022-01-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Кожухотрубный теплообменник
DE102021134317B4 (de) 2021-12-22 2025-07-03 Bernd Buck Fernwärmeübergabestation und verfahren zum betreiben derselben

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003579A (en) * 1932-08-15 1935-06-04 Holyoke Heater Company Heater
DE3519315A1 (de) * 1985-05-30 1986-12-04 kabelmetal electro GmbH, 3000 Hannover Waermetauscher aus einem huellrohr und einem im innern des huellrohres angeordneten wendelartig verlaufenden rohr
DE3641139A1 (de) * 1985-12-06 1987-06-11 Vaillant Joh Gmbh & Co Indirekt beheizter heisswassererzeuger und -speicher
DE4240180A1 (de) * 1992-11-30 1994-06-01 Fritz Egger Gmbh Wärmetauscher und Verfahren zu seinem Betreiben
BRPI0614910A2 (pt) * 2005-07-29 2011-04-19 Linde Ag trocador de calor enrolado com diferentes diámetros de tubos
US20110289905A1 (en) * 2010-06-01 2011-12-01 Delphi Technologies, Inc. Exhaust gas heat recovery heat exchanger

Also Published As

Publication number Publication date
DE102012101276A1 (de) 2013-08-22
EA026850B1 (ru) 2017-05-31
EP2815196A2 (fr) 2014-12-24
ES2579833T3 (es) 2016-08-17
PL2815196T3 (pl) 2016-10-31
EA201400923A1 (ru) 2014-11-28
WO2013120621A3 (fr) 2013-11-21
WO2013120621A2 (fr) 2013-08-22
DK2815196T3 (en) 2016-07-25
HUE029432T2 (en) 2017-02-28
SI2815196T1 (sl) 2016-05-31

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