EP4495529B1 - Hocheffizienter wärmetauscher - Google Patents

Hocheffizienter wärmetauscher

Info

Publication number
EP4495529B1
EP4495529B1 EP23472004.3A EP23472004A EP4495529B1 EP 4495529 B1 EP4495529 B1 EP 4495529B1 EP 23472004 A EP23472004 A EP 23472004A EP 4495529 B1 EP4495529 B1 EP 4495529B1
Authority
EP
European Patent Office
Prior art keywords
heat
releasing tube
liquid
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
EP23472004.3A
Other languages
English (en)
French (fr)
Other versions
EP4495529C0 (de
EP4495529A1 (de
Inventor
Zhechko Angelov Kyurkchiev
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.)
Tesy Ood
Original Assignee
Tesy Ood
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 Tesy Ood filed Critical Tesy Ood
Priority to EP23472004.3A priority Critical patent/EP4495529B1/de
Publication of EP4495529A1 publication Critical patent/EP4495529A1/de
Application granted granted Critical
Publication of EP4495529C0 publication Critical patent/EP4495529C0/de
Publication of EP4495529B1 publication Critical patent/EP4495529B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078—Heat exchanger arrangements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/127—Fastening; Joining by methods involving deformation of the elements by shrinking

Definitions

  • the heat exchanger is applicable for heating liquids, for example water for domestic and industrial purposes. It can be a major part of systems for heating liquids, in heat pump heating systems and others.
  • the present invention relates to a heat exchanger as defined in the preamble of claim 1, and as illustrated in AU 32581 89A .
  • Utility model CN201772774U discloses a heat exchanger comprising a container for liquid with an inlet tube for cold water and an outlet tube for hot water, and a heat-releasing tube coil wound around the outer side of the container, and an adhesive thermally conductive layer is added between the contact part of the inner side of the coil with the container and the outer side of the container.
  • the profile of the tube coil is oval or D-shaped.
  • the container for liquid and the coil are made of different materials.
  • the container is made of low-carbon or stainless steel, and the coil is made of aluminum, copper or their alloy.
  • the object of the invention is to create a heat exchanger with an increased coefficient of heat transfer and heat release from the heating fluids, leading to an increased coefficient of performance (COP).
  • COP coefficient of performance
  • a heat exchanger consisting of a container for liquid with an inlet pipe for cold liquid, and an outlet pipe for hot liquid and a heat-releasing tube coil for heating fluid.
  • the heat-releasing tube coil for heating fluid has an inlet tube, a heat-releasing tube wound in the form of a coil around the container for liquid, and an outlet tube.
  • the heat-releasing tube of the heat-releasing tube coil is tensioned around the container for liquid by preheating to the operating temperature of a heat transfer fluid intended to circulate in the coil before winding the heat-releasing tube around the container for liquid. According to the invention, only the coil is heated to the corresponding temperature, which is higher than the temperature of the other components included in the construction, which remain at an unchanged temperature.
  • the heat-releasing tube of the heat-releasing tube coil wound around the container for liquid is covered with fixing protective tape with adhesive layer, resistant to a temperature at least as high as the temperature of the heat transfer fluid in the heat-releasing tube of the heat-releasing tube coil.
  • a layer of thermal paste is applied between the heat-releasing tube coil and the container for liquid, which improves the thermal conductivity between the container for liquid and the heat-releasing tube coil.
  • the preheating of the tube compensates for the different expansion of the container for liquid and the coil.
  • the heat-releasing tube of the heat-releasing tube coil wound around the container for liquid is covered with fixing protective tape with adhesive layer resistant to a temperature at least as high as the temperature of the heating fluid in the heat-releasing tube of the heat-releasing tube coil.
  • the heating of the coil to the operating temperature of the heating fluid can be done by induction, infrared radiant heating, gas flame, or hot air, above the ambient temperature during its assemble with the container for liquid.
  • the liquid in the container for liquid 1 is water.
  • the heat-releasing tube coil is made of aluminum.
  • it can be made of copper, or aluminum or copper alloy.
  • the thermal insulation layer 3 is made of hard or soft polyurethane.
  • Alternative materials are expanded polystyrene EPS, extruded polystyrene XPS, stone or polymer wool.
  • heat transfer fluid that can be used in the heat-releasing tube coil are known in the art.
  • the heat-releasing tube coil After being mounted around the container for liquid 1, the heat-releasing tube coil is covered with a fixing protective tape with an adhesive layer (not shown in the figures), the tape being arranged with the adhesive layer facing the heat-releasing tube coil.
  • the fixing tape is resistant to a temperature at least as high as the temperature of the heating fluid in the heat-releasing tube 2 of the heat-releasing tube coil.
  • the fixing tape must withstand a temperature of at least 80°C.
  • An example of a suitable fixing tape is a highly conformable polyolefin copolymer tape with special adhesive coating on the backside for good adhesion during mounting processes involving the use of polyurethane foam.
  • the adhesive coating of the tape can be, for example, based on synthetic rubber with high adhesion.
  • the fixing tape is used to prevent the thermal insulation polyurethane foam from entering between the container for liquid 1 and the heat-releasing tube 2, which can reduce the contact between them, and hence the coefficients of heat transfer and heat release from the heating fluids to the container for liquid 1.
  • the heat exchanger condenses, wherein the heat transfer fluid in the heat-releasing tube coil is heated, respectively the heat-releasing tube coil heats, which in turn heats the container for liquid 1 and respectively the heated fluid therein.
  • the two materials expand linearly, but due to the preliminary tensioning of the heat-releasing tube 2 of the heat-releasing tube coil, when it reaches its operating temperature, it does not separate from the container for liquid 1; due to the greater extension of the heat-releasing tube 2 in length and diameter relative to the container for liquid 1, the resulting linear thermal expansions are compensated accordingly, and the contact, and hence the conduction, are more efficient.
  • the heat-releasing tube 2 is wound in the form of a coil around the container for liquid 1, the turns of the coil being optionally spaced far or close apart. Densely spaced turns form a longer coil and have a smaller degree of planar curvature, while sparser turns form a shorter coil and have a greater degree of planar curvature. It is possible for the entire coil to be wound with the same pitch between the turns. It is also possible for the pitch between the turns to vary in different parts of the coil, e.g. the turns are denser at the bottom of the container for liquid 1 and sparser at the top of the container for liquid 1.

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)

Claims (9)

  1. Wärmetauscher, bestehend aus einem Flüssigkeitsbehälter (1) mit einem Zulaufrohr für kalte Flüssigkeit (6) und einem Ablaufrohr für heiße Flüssigkeit (5), einem Rohrschlangenwärmetauscher zum Erhitzen von Flüssigkeit, die ein Zulaufrohr (8), ein wendelförmig um den Flüssigkeitsbehälter (1) gewickeltes Wärme abgebendes Rohr (2) und ein Ablaufrohr (9) aufweist, wobei sich um den Flüssigkeitsbehälter (1) und den Rohrschlangenwärmetauscher eine Wärmedämmschicht (3) und ein äußerer Schutzmantel (4) befinden, dadurch gekennzeichnet, dass das Wärme abgebende Rohr (2) des Rohrschlangenwärmetauschers um den Flüssigkeitsbehälter (1) gespannt wird, indem nur die Wärme abgebende Rohrschlange auf die Betriebstemperatur eines in der Schlange zirkulierenden Wärmeträgerfluids vorgewärmt wird, bevor das Wärme abgebende Rohr (2) um den Flüssigkeitsbehälter (1) gewickelt wird.
  2. Wärmetauscher gemäß Anspruch 1, dadurch gekennzeichnet, dass das um den Flüssigkeitsbehälter (1) gewickelte Wärme abgebende Rohrschlange (2) des Rohrschlangenwärmetauschers mit einem Befestigungsschutzband mit einer Klebeschicht umhüllt ist, die mindestens der Temperatur der im Wärmeabgaberohr (2) des Rohrschlangenwärmetauschers zirkulierenden Wärmeträgerflüssigkeit standhält.
  3. Wärmetauscher gemäß den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass der Flüssigkeitsbehälter (1) und die Wärmeabgaberohrschlange aus Werkstoffen mit unterschiedlichen Längenausdehnungskoeffizienten bestehen, wobei der Flüssigkeitsbehälter (1) aus Stahl und die Wärmeabgaberohrschlange aus einer Aluminium- oder Kupferlegierung besteht.
  4. Wärmetauscher gemäß einem der Ansprüche 1-3, dadurch gekennzeichnet, dass zwischen der Wärmeabgaberohrschlange und dem Flüssigkeitsbehälter (1) eine Schicht Wärmeleitpaste aufgebracht ist.
  5. Verfahren zur Herstellung eines Wärmetauschers, umfassend die folgenden Schritte:
    - Herstellung eines Flüssigkeitsbehälters (1) mit einem Zulaufrohr für kalte Flüssigkeit (6) und einem Ablaufrohr für heiße Flüssigkeit (5);
    - Herstellung einer Rohrschlangenwärmetauscher zum Erhitzen von Flüssigkeit, die ein Zulaufrohr (8), ein Wärmeabgaberohr (2) und ein Ablaufrohr (9) aufweist;
    - Wickeln des Wärme abgebenden Rohrs (2) der Wänneabgaberohrschlange um den Flüssigkeitsbehälter (1);
    - Aufziehen eines äußeren Schutzmantels (4) auf den Flüssigkeitsbehälter (1) und die Wärmeabgaberohrschlange und Anbringen einer Wärmedämmschicht (3) zwischen Mantel (4), Flüssigkeitsbehälter (1) und Wärmeabgaberohrschlange,
    dadurch gekennzeichnet, dass vor dem Wickeln des Wärme abgebenden Rohrs (2) der Wärmeabgaberohrschlange um den Flüssigkeitsbehälter (1) die Wärmeabgaberohrschlange auf die Betriebstemperatur eines in der Wärmeabgaberohrschlange zirkulierenden Wärmeträgerfluids vorgewärmt wird, und anschließend das Wärme abgebende Rohr (2) der Wärmeabgaberohrschlange wird um den Flüssigkeitsbehälter (1) gewickelt, und anschließend wird das Wärme abgebende Rohr (2) der Wärmeabgaberohrschlange abgekühlt, wodurch es sich um den Flüssigkeitsbehälter (1) schrumpft und mechanisch spannt.
  6. Verfahren zur Herstellung eines Wärmetauschers gemäß Anspruch 5, dadurch gekennzeichnet, dass das um den Flüssigkeitsbehälter (1) gewickelte Wärme abgebende Rohr (2) der Wärmeabgaberohrschlange mit einem Befestigungsschutzband mit einer Klebeschicht umhüllt wird, die mindestens der Temperatur der im Wärme abgebenden Rohr (2) der Wärmeabgaberohrschlange zirkulierenden Wärmeträgerflüssigkeit standhält.
  7. Verfahren zur Herstellung eines Wärmetauschers gemäß den Ansprüchen 5 und 6, dadurch gekennzeichnet, dass vor dem Wickeln des Wärme abgebenden Rohrs (2) um den Flüssigkeitsbehälter (1) eine Schicht Wärmeleitpaste zwischen Wärmeabgaberohrschlange und Flüssigkeitsbehälter (1) aufgetragen wird.
  8. Verfahren zur Herstellung eines Wärmetauschers gemäß einem der Ansprüche 5-7, dadurch gekennzeichnet, dass die Erwärmung der Spule auf die Betriebstemperatur des Wärmeträgermediums durch Induktion, Infrarotstrahlung, Gasflamme oder Heißluft oberhalb der Umgebungstemperatur während der Zusammensetzung mit dem Flüssigkeitsbehälter (1) erfolgt.
  9. Verfahren zur Herstellung eines Wärmetauschers gemäß einem der Ansprüche 5-8, dadurch gekennzeichnet, dass der Flüssigkeitsbehälter (1) aus Stahl und das Wärmeabgaberohr (2) der Wärmeabgaberohrspule aus einer Aluminium- oder Kupferlegierung besteht.
EP23472004.3A 2023-07-19 2023-07-19 Hocheffizienter wärmetauscher Active EP4495529B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23472004.3A EP4495529B1 (de) 2023-07-19 2023-07-19 Hocheffizienter wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23472004.3A EP4495529B1 (de) 2023-07-19 2023-07-19 Hocheffizienter wärmetauscher

Publications (3)

Publication Number Publication Date
EP4495529A1 EP4495529A1 (de) 2025-01-22
EP4495529C0 EP4495529C0 (de) 2025-08-13
EP4495529B1 true EP4495529B1 (de) 2025-08-13

Family

ID=87863591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23472004.3A Active EP4495529B1 (de) 2023-07-19 2023-07-19 Hocheffizienter wärmetauscher

Country Status (1)

Country Link
EP (1) EP4495529B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY104739A (en) * 1988-04-08 1994-05-31 Quantum Energy Systems International Pty Ltd Water heater
AUPP021197A0 (en) * 1997-11-05 1997-11-27 Quantum Energy Systems Pty Limited An improved water heater
CN201772774U (zh) 2010-05-26 2011-03-23 美的集团有限公司 加热容器

Also Published As

Publication number Publication date
EP4495529C0 (de) 2025-08-13
EP4495529A1 (de) 2025-01-22

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