EP1147343A1 - Chauffe-eau a accumulation - Google Patents

Chauffe-eau a accumulation

Info

Publication number
EP1147343A1
EP1147343A1 EP00904960A EP00904960A EP1147343A1 EP 1147343 A1 EP1147343 A1 EP 1147343A1 EP 00904960 A EP00904960 A EP 00904960A EP 00904960 A EP00904960 A EP 00904960A EP 1147343 A1 EP1147343 A1 EP 1147343A1
Authority
EP
European Patent Office
Prior art keywords
hot water
container
heating
tubular element
heating 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.)
Withdrawn
Application number
EP00904960A
Other languages
German (de)
English (en)
Inventor
Lorenz Kirchner
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.)
Reflex Winkelmann and Pannhoff and Co GmbH
Original Assignee
Reflex Winkelmann and Pannhoff and Co GmbH
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 Reflex Winkelmann and Pannhoff and Co GmbH filed Critical Reflex Winkelmann and Pannhoff and Co GmbH
Publication of EP1147343A1 publication Critical patent/EP1147343A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/087—Tap water heat exchangers specially adapted therefore
    • 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
    • F28D20/0039—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 with stratification of the 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a hot water tank with a thermally insulated closed storage tank with a cold water inlet in its lower region and a hot water outlet in its upper region with a tubular element arranged in the container, which is arranged at a distance from the container bottom and the container lid, and with an outside around it tubular element arranged heating coil with heating medium inlet and outlet led from the storage tank.
  • hot water to be heated forms the contents of the hot water tank while the heating medium is fed into a heating coil.
  • hot water storage tanks are not designed as instantaneous heaters, since there is general concern that the specific heat output of such systems is insufficient to bring the required amount of hot water to the desired level Heating temperature.
  • water heaters are to be operated as instantaneous water heaters, they are only heated electrically or gas. In addition, there is an endeavor in the case of instantaneous heaters with a high specific heating output to heat a small volume of hot water. Such a water heater cannot be used as a buffer storage.
  • hot water tanks are designed as stratified tanks. Constructions are known in which the heating coil is arranged within a tubular body, which in turn is arranged upright in the store. If the flow temperature supplied by the heat source is relatively low, the heating capacity of the hot water tank is unsatisfactory, since the warm water on top prevents the rise of the less heated water. As a result, the flow in the tubular body arranged in the middle stops and the heating coil loses power significantly. In order to compensate for this disadvantage, in a solution known from DE-43 01 723-Al the tubular body is provided with complex check valve flap constructions. The flaps are arranged at different heights of the tubular body and thus enable heat exchange at different heights and different temperature ranges.
  • This known hot water tank does not work as a continuous flow heater, but the domestic water to be heated forms the contents of the hot water tank and the heating medium is guided in the heating spiral (s).
  • a generic hot water tank is known from DE-197 24 805-A1.
  • the heating coil through which the heating medium flows, is arranged outside a tubular element and surrounds it.
  • the tubular element is located in the immediate vicinity of the heat source and extends approximately over the entire height of the hot water tank in order to form inflow and outflow gaps with the bottom or cover of the storage tank.
  • the inflow gap on the bottom the domestic water to be heated reaches the annular gap which is formed by the outer wall of the container and the tubular element and in which the heating coil is arranged.
  • the convection in the annular gap creates a relatively high flow rate, which results in good heat transfer.
  • the hot service water reaches the upper area of the hot water tank through the outflow gap.
  • This hot water tank also does not work as a water heater.
  • a hot water tank which has a tubular element with a heating spiral, which extends only in the lower region of the container.
  • a hot water tank is known in which process water is heated in a continuous flow principle.
  • the object of the invention is to further develop a generic hot water tank, which is indirectly heated by at least one liquid heating medium, so that it can be operated as a water heater and at the same time is able to store excess heat from preferably solar heat generator systems for later retrieval.
  • a hot water tank of the type mentioned at the outset in that the tubular element with the heating coil extends only in the lower region of the container and at least above the tubular element a hot water heating coil through which the hot water flows is arranged, which is directly connected to the cold water supply and the Hot water drain is connected and is in indirect heat exchange with a liquid heat carrier received in the container and heated by the heating coil, the hot water heating coil extending into the interior of the tubular element.
  • hot water tank available, which is able to store excess heat as well as to heat process water using the continuous flow principle.
  • the lower part of the hot water storage tank is designed as a stratified storage tank, but the storage tank contents are not the process water itself, but a liquid heat transfer medium, for example also water.
  • This liquid heat transfer medium is heated in the narrow annular space between the tubular element and the container wall by the heating medium flowing through the heating coil.
  • This arrangement results in a rapid heat transfer, with which a comparatively small amount of water meets a high heat potential.
  • This results in a rapid heating of the heat transfer medium which is used to heat the process water that flows through the process water heating spiral.
  • the domestic water is thus heated in a continuous flow principle in indirect heat exchange with the liquid heat transfer medium.
  • the hot water heating coil extends into the interior of the tubular element achieves additional preheating of the hot water, which significantly improves the performance of the hot water heater.
  • the outlet temperature at the return of the heating coil (for example at the return of the solar circuit) is reduced, which significantly improves the efficiency of the solar system.
  • additional inlets and outlets for liquid heat transfer media are provided, which are in direct heat exchange with the heat transfer fluid received in the container.
  • additional heating devices such as boiler systems heated by fossil fuels, heat pump systems, etc. Since the process water itself only circulates in the process water heating coil, the heat from such additional heating can be introduced by direct heat exchange, i.e. the liquid heat transfer medium, which is heated in another heat source, gets directly into the hot water tank without the interposition of a heat exchanger and mixes there the heat transfer medium in the store. On the one hand, this increases efficiency and, on the other hand, it lowers the cost of the hot water tank.
  • this shows a longitudinal section of a hot water tank according to the invention.
  • a hot water tank according to the invention is generally designated 1 in the drawing.
  • This hot water tank has a thermally insulated closed storage tank 2.
  • this container 2 there is a standing tubular element 3, namely at a distance from the container bottom 4 and at a clear distance from the container lid 5.
  • This tubular element 3 is surrounded on the outside by a heating coil 6, which is guided by a heating element from the storage container 2 Heating medium inlet 7 and heating medium run 8 is connected.
  • the tubular element 3 extends only in the lower region of the storage tank 2 and at least above the same is arranged a hot water heating coil 9 through which the hot water flows and which is connected directly to a cold hot water inlet 10 and a hot hot water outlet 11.
  • This hot water heating coil 9 can preferably also extend into the interior of the tubular element 3, this area of the hot water heating coil is designated by 9a.
  • a liquid heat transfer medium 12 which can be water, for example, is accommodated in the storage container 2. With this liquid heat transfer medium 12, which is heated by the heating coil 6, the process water heating coil 9, 9a is in indirect heat exchange.
  • the liquid heat transfer medium 12 can be in direct heat exchange with other liquid heat transfer media, preferably also water, which can be introduced into the container 2 via additional inlets and outlets for liquid heat transfer media.
  • Such inlets are designated by reference numerals 13 and 14, the corresponding returns by reference numerals 15 and 16.
  • a further return 17 is indicated. It can be seen that the hot water tank 1 is able both to store excess heat and to heat process water on a continuous basis.
  • the hot water tank 1 is formed in its lower area (area of the tubular element 3) as a stratified tank, the tank content not being the process water itself which flows through the process water heating coil 9 or 9a in the flow principle, but rather the liquid heat transfer medium 12 the narrow annular space between the tubular element 3 and the wall of the container 2 is heated by the heating medium flowing through the heating coil 3.
  • This arrangement results in a rapid heat transfer, with which a comparatively small amount of water meets a high heat potential.
  • the hot water is thus heated in a continuous flow principle in indirect heat exchange with the liquid heat transfer medium 12.
  • the area 9a of the hot water heating coil 9 results in an additional preheating of the hot water, which significantly improves the performance of the hot water heater.
  • the outlet temperature at the heating medium outlet 8 is reduced, which significantly improves the efficiency.
  • the invention is not limited to the exemplary embodiment shown, further configurations are possible without departing from the basic idea.
  • the hot water heating coil 9 only extend above the tubular element 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Chauffe-eau à accumulation comprenant un réservoir (2) fermé calorifugé, qui présente un orifice d'entrée d'eau sanitaire froide (10) à sa partie inférieure et un orifice de sortie d'eau sanitaire chaude (11) à sa partie supérieure; un élément tubulaire (3), disposé verticalement à l'intérieur du réservoir (2), à distance de la base du réservoir et du couvercle dudit réservoir; et un serpentin de chauffage (6), qui entoure ledit élément tubulaire (3) et présente un orifice d'entrée et un orifice de sortie de fluide caloporteur (7, 8) provenant du réservoir. L'élément tubulaire (3) entouré du serpentin de chauffage (6) ne s'étend que dans la partie inférieure du réservoir et un serpentin de chauffage (9) parcouru par l'eau sanitaire est disposé au moins au-dessus dudit élément (3). Ledit serpentin de chauffage (9), relié directement à l'orifice d'entrée d'eau froide (10) et à l'orifice de sortie d'eau chaude (11), est en échange thermique indirect avec un fluide caloporteur (12) chauffé par le serpentin de chauffage (6) disposé à l'intérieur du réservoir (2).
EP00904960A 1999-01-29 2000-01-25 Chauffe-eau a accumulation Withdrawn EP1147343A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19903442A DE19903442A1 (de) 1999-01-29 1999-01-29 Warmwasserspeicher
DE19903442 1999-01-29
PCT/EP2000/000543 WO2000045093A1 (fr) 1999-01-29 2000-01-25 Chauffe-eau a accumulation

Publications (1)

Publication Number Publication Date
EP1147343A1 true EP1147343A1 (fr) 2001-10-24

Family

ID=7895712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00904960A Withdrawn EP1147343A1 (fr) 1999-01-29 2000-01-25 Chauffe-eau a accumulation

Country Status (4)

Country Link
EP (1) EP1147343A1 (fr)
AU (1) AU2666700A (fr)
DE (1) DE19903442A1 (fr)
WO (1) WO2000045093A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005044845A1 (de) * 2005-09-20 2007-03-22 Gewofag Gemeinnützige Wohnungsfürsorge AG Trinkwassererwärmungsanlage
ITVI20070242A1 (it) * 2007-08-29 2009-02-28 Pietro Cecchin Serbatoio di accumulo per fluidi perfezionato
JP4539777B2 (ja) * 2008-02-01 2010-09-08 ダイキン工業株式会社 貯湯式給湯機および貯湯式暖房給湯機
DE102009026420B4 (de) 2009-05-22 2023-10-05 Joachim Zeeh Mehrzonen-Schichtladespeicher
AT511954B1 (de) * 2012-01-16 2013-04-15 Doppler Markus Ing Warmwasserspeicher

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE522148A (fr) *
DE8705241U1 (de) * 1987-04-08 1988-08-11 Robionek, Hans-Joachim, 4650 Gelsenkirchen Brauchwasserspeichererhitzer
DE4301723C2 (de) * 1992-01-24 1995-03-16 Solar Diamant Syst Warmwasserspeicher
ATA102296A (de) * 1996-06-11 2000-02-15 Vaillant Gmbh Schichtenspeicher
DE19707184B4 (de) * 1997-02-22 2004-05-27 Solar Diamant Systemtechnik Gmbh Warmwasserspeicher
DE19710803C2 (de) * 1997-03-17 1999-09-02 Wagner & Co Solartechnik Gmbh Warmwasser-Speichersystem
DE29800262U1 (de) * 1998-01-09 1998-09-10 Löser Solarsysteme GmbH, 04457 Baalsdorf Speichersystem zur Warmwasserbereitung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0045093A1 *

Also Published As

Publication number Publication date
AU2666700A (en) 2000-08-18
WO2000045093A1 (fr) 2000-08-03
DE19903442A1 (de) 2000-08-10

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