SE500275C2 - Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts - Google Patents

Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts

Info

Publication number
SE500275C2
SE500275C2 SE9301669A SE9301669A SE500275C2 SE 500275 C2 SE500275 C2 SE 500275C2 SE 9301669 A SE9301669 A SE 9301669A SE 9301669 A SE9301669 A SE 9301669A SE 500275 C2 SE500275 C2 SE 500275C2
Authority
SE
Sweden
Prior art keywords
diffuser
hot water
radial
section
channel
Prior art date
Application number
SE9301669A
Other languages
Swedish (sv)
Other versions
SE9301669D0 (en
SE9301669L (en
Inventor
Tore J Hedbaeck
Anders J W Hedbaeck
Original Assignee
Hedbaeck Ab Tore J
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 Hedbaeck Ab Tore J filed Critical Hedbaeck Ab Tore J
Priority to SE9301669A priority Critical patent/SE500275C2/en
Publication of SE9301669D0 publication Critical patent/SE9301669D0/en
Publication of SE9301669L publication Critical patent/SE9301669L/en
Publication of SE500275C2 publication Critical patent/SE500275C2/en

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
    • 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
    • F24D10/00—District heating systems
    • 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
    • F24D19/00—Details
    • 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
    • F28D2020/0069—Distributing arrangements; Fluid deflecting means
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14—District level solutions, i.e. local energy networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Bathtub Accessories (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Secondary Cells (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)

Abstract

The tank (1) has a cover (a) and a transverse partition (6) which separates cold water (5) from hot (4). In the upper part (4) is a duct system (7) for the supply an drawing off of hot water, and in the lower part is a similar duct system (8) for the supply and drawing off of cold water. When hot water is drawn off cold water automatically flows into the tank. A pipe (19) attached to a float (18) draws off hot water from just beneath the surface. The vertical duct (10) in the upper part of the tank is cone-shaped and is identical with that in the lower part, apart from the float (9).

Description

15 20 25 30 35 40 500 275 2 sorns periferi ökande tvärsnitt. Härigenom erhålls ett lokalt tryckfall, lika stort i varje radiell riktning runt hela in- loppsperiferin och därmed en jämn fördelning av vattenflödet i alla horisontella riktningar vid inledning av het- eller kall- vatten i tanken. 3. Radialdiffusorn är utförd med ovanför varandra anord- nade i huvudsak parallella randplåtar vid sin periferi. Här- igenom uppnås att det från diffusorn i tanken inströmmande het- eller kallvattnet omlänkas till horisontell riktning med åt- följande mindre störningar av mellanskiktet. 4. Gavelplåtarna är utförda som koner med stor topp- vinkel, kalotter med stor radie eller som en kombination av flera koner med stor, men olika toppvinkel, varvid mantelytorna resp. de sfäriska konvexa ytorna är vända mot varandra. Här- igenom erhålls en bättre formstabilitet hos gavelplåtarna och därmed en minskad risk för excentrisk strömning vid inledning av het- eller kallvatten i tanken. 15 20 25 30 35 40 500 275 2 sorns periphery increasing cross section. This results in a local pressure drop, equal in each radial direction around the entire inlet periphery and thus an even distribution of the water flow in all horizontal directions at the introduction of hot or cold water in the tank. The radial diffuser is made with substantially parallel edge plates arranged one above the other at its periphery. In this way it is achieved that the hot or cold water flowing in from the diffuser into the tank is diverted to the horizontal direction with consequent minor disturbances of the intermediate layer. 4. The end plates are made as cones with a large top angle, capillaries with a large radius or as a combination of several cones with a large, but different top angle, the spherical convex surfaces are facing each other. This results in a better dimensional stability of the end plates and thus a reduced risk of eccentric flow when hot or cold water is introduced into the tank.

Uppfinningen beskrivs närmare nedan under hänvisning till bifogade ritning, på vilken fig. 1 visar ett längdsnitt genom en trycklös hetvattenackumulator för fjärrvärmesystem enligt uppfinningen, fig. 2 visar ett längdsnitt genom en toppdiffusor hos ackumulatorn i fig. 1, och fig. 3 visar ett längdsnitt ge- nom en bottendiffusor hos ackumulatorn i fig. 1.The invention is described in more detail below with reference to the accompanying drawing, in which Fig. 1 shows a longitudinal section through a pressureless hot water accumulator for district heating systems according to the invention, Fig. 2 shows a longitudinal section through a top diffuser of the accumulator in Fig. 1, and Fig. 3 shows a longitudinal section through a bottom diffuser of the accumulator in Fig. 1.

Såsom framgår av ritningen, särskilt fig. 1, innefattar ackumulatorn enligt uppfinningen på känt sätt en med ett lock a försedd tank 1, i vilken hetvatten och kallvatten är lagrade i två separata, av ett mellanskikt 6 åtskilda skikt 4 resp. 5, en toppdiffusor 7 för införande och avtappning av hetvatten, minst en bottendiffusor 8 för införande och avtappning av kallvatten, varvid då hetvatten avtappas kallvatten samtidigt införs och tvärtom, ett av en flottör 18 uppburet rör 19 för avsugning av hetvatten från strax under hetvattenskiktets yta samt ett mel- lan hetvattenskiktet och tanklocket anordnat vattenlås, varvid toppdiffusorn är försedd med en flottör 9 men i övrigt är iden- tisk med bottendiffusorn, båda diffusorer 7, 8 innefattar en i huvudsak vertikal konisk diffusorkanal 10, en i huvudsak hori- sontell mellan två gavelplåtar 11, 12 avgränsad och till diffu- sorkanalens ände med största tvärsnittet anslutande radialdif- fusor c samt diffusorkanalen vid toppdiffusorn är belägen nedanför radialdiffusorn men ovanför radialdiffusorn vid bot- 10 15 3 500 275 tendiffusorn.As can be seen from the drawing, in particular Fig. 1, the accumulator according to the invention comprises in a known manner a tank 1 provided with a lid a, in which hot water and cold water are stored in two separate layers 4 and 4, respectively, separated by an intermediate layer 6. 5, a top diffuser 7 for introducing and draining hot water, at least one bottom diffuser 8 for introducing and draining cold water, whereby when hot water is drained cold water is simultaneously introduced and vice versa, a tube 19 supported by a float 18 for sucking hot water from just below the hot water layer surface and a water trap arranged between the hot water layer and the tank cap, the top diffuser being provided with a float 9 but otherwise identical to the bottom diffuser, both diffusers 7, 8 comprising a substantially vertical conical diffuser channel 10, a substantially horizontal between two end plates 11, 12 delimited and radial diffuser c and connected to the end of the diffuser channel with the largest cross section and the diffuser channel at the top diffuser are located below the radial diffuser but above the radial diffuser at the bottom diffuser.

Gentemot den kända trycklösa hetvattenackumulatorn för fjärrvärmesystem, skiljer sig emellertid ackumulatorn enligt uppfinningen genom att, såsom fig. 2 och 3 visar, radial- diffusorn c uppvisar en avrundad övergång 13 mellan diffusor- kanalen 10 och den därtill anslutande gavelplåten 11, att radialdiffusorns c närmast diffusorkanalen 10 belägna centrala del 14 uppvisar ett mindre tvärsnitt än därtill anslutande diffusorkanaldel och dess utanförliggande perifera del ett från den centrala radialdiffusordelen mot radialdiffusorns periferi ökande tvärsnitt, att radialdiffusorn c vid sin periferi upp- visar minst en randplåt, företrädesvis två ovanför varandra anordnade i huvudsak horisontella randplåtar 16, 17, att gavel- plåtarna 11, 12 är utförda som koner med stor toppvinkel, kalotter med stor radie eller som en kombination av flera koner med stor, men olika toppvinkel, varvid mantelytorna resp. de sfäriska konvexa ytorna är vända mot varandra. __-._________________In contrast to the known pressureless hot water accumulator for district heating systems, however, the accumulator according to the invention differs in that, as Figs. 2 and 3 show, the radial diffuser c has a rounded transition 13 between the diffuser channel 10 and the adjoining end plate 11, that the radial diffuser c the central part 14 located at the diffuser channel 10 has a smaller cross-section than the adjoining diffuser channel part and its outer peripheral part has a cross section increasing from the central radial diffuser part towards the periphery of the radial diffuser, that the radial diffuser c has at least one edge plate horizontal edge plates 16, 17, that the end plates 11, 12 are designed as cones with a large top angle, capillaries with a large radius or as a combination of several cones with a large, but different top angle, the mantle surfaces resp. the spherical convex surfaces are facing each other. __-.___________________

Claims (2)

10 15 20 25 30 5 Ü 0 2 7 5 L! Patentkrav10 15 20 25 30 5 Ü 0 2 7 5 L! Patent claims 1. Radialdiffusor för hetvattenackumulator varvid nämnda radialdiffusor (c) är i huvudsak horisontell och avgränsad mellan två gavelplåtar (11, 12) och innefattande en i huvudsak vertikal konisk diffusorkanal (10) vilkens ände med största tvärsnittet ansluter till radialdiffusom (c), k ä n n e t e c k n a d av att radialdiffusom (c) uppvisar en avrundad övergång (13) mellan diffusorkanalen (10) och den därtill anslutande gavelplåten (11), att radialdiffusoms (c) närmast diffusorkanalen (10) belägna centrala del ( 14) uppvisar ett mindre tvärsnitt än därtill anslutande diffusorkanaldel och dess utanförliggande perifera del ett från den centrala radialdiffusordelen mot radialdiffusoms periferi ökande tvärsnitt, att radialdiffu- som (c) vid sin periferi uppvisar ovanför varandra anordnade i huvudsak horisontella randplåtar (16, 17), att gavelplåtarna (11, 12) är utförda som koner med stor toppvinkel, kalotter med stor radie eller som en kombination av flera koner med stor, men olika toppvinkel, varvid mantelytoma resp. de sfäriska konvexa ytoma är vända mot varandra.Radial diffuser for hot water accumulator wherein said radial diffuser (c) is substantially horizontal and delimited between two end plates (11, 12) and comprising a substantially vertical conical diffuser channel (10) whose end with the largest cross section connects to the radial diffuser (c), k ä ä characterized in that the radial diffuser (c) has a rounded transition (13) between the diffuser channel (10) and the adjoining end plate (11), that the central part (14) of the radial diffuser (c) closest to the diffuser channel (10) has a smaller cross section than connecting diffuser channel part and its outer peripheral part an increasing cross section increasing from the central radial diffuser part towards the periphery of the radial diffuser, that radial diffusers (c) at their periphery have superimposed substantially horizontal edge plates (16, 17), that the end plates (11, 12) are made as cones with a large top angle, calotters with a large radius or as a combination of fl your cones with a large but different top view nkel, whereby mantelytoma resp. the spherical convex surfaces are facing each other. 2. Trycklös hetvattenackumulator för tjärrvärmesystem, innefattande en med ett lock (a) försedd tank (1), i vilken hetvatten och kallvatten är lagrade i två separata, av ett mellanskikt (6) åtskilda slcikt (4 resp. 5), en toppdiffusor (7) för införande och avtappning av hetvatten, minst en bottendiffusor (8) för införande och avtappning av kallvatten, varvid då hetvatten avtappas kallvatten samtidigt införs och tvärtom, ett av en flottör (18) uppburet rör (19) för avsugning av hetvatten från strax under hetvattenskiktets yta samt ett mellan hetvattenskiktet och tanklocket anordnat vattenlås, varvid toppdiffusom är försedd med en flottör (9) men i övrigt är identisk med bottendiffusorn, båda diffusorer (7,8) innefattar en i huvudsak vertikal konisk diffusorkanal (10), en i huvudsak horisontell mellan två gavelplätar (ll, 12) avgränsad och till diffusorkanalens ände med största tvärtsnittet anslutande radialdiffusor (c) samt diffusorkanalen vid toppdiffusom är belägen nedanför radialdiffusom med ovanför radialdiffusom vid bottendiffusorn, k ä n n e t e c k n a d av att radialdiffusom (c) uppvisar en avrundad övergång (13) mellan diffusorkanalen (10) och den därtill anslutande gavelplåten (l 1), att radialdiffusoms (c) närmast diffusorkanalen (10) belägna centrala del (14) uppvisar ett mindre tvärsnitt än därtill anslutande diffusorkanaldel och dess utanförliggande perifera del ett från den centrala radialdiffusordelen mot radialdiffusoms periferi ökande tvärsnitt, att radialdiffusom (c) vid sin periferi uppvisar ovanför varandra anordnade i huvudsak horisontella randplåtar (16, 17), att gavelplåtarna (ll, 12) är utförda som koner med stor toppvinkel, kalotter med stor radie eller som en kombination av flera koner med stor, men olika toppvinkel, varvid mantclytorna resp. de stäriska konvexa ytoma är vända mot varandra.Pressureless hot water accumulator for tar heating systems, comprising a tank (1) provided with a lid (a), in which hot water and cold water are stored in two separate, separated by an intermediate layer (6) (4 and 5, respectively), a top diffuser ( 7) for introducing and draining hot water, at least one bottom diffuser (8) for introducing and draining cold water, whereby when hot water is drained cold water is introduced at the same time and vice versa, a pipe (19) supported by a tt otter (18) for sucking hot water from just below the surface of the hot water layer and a water trap arranged between the hot water layer and the tank cap, the top diffuser being provided with an fl otter (9) but otherwise identical to the bottom diffuser, both diffusers (7,8) comprise a substantially vertical conical diffuser channel (10), a substantially horizontal between two end plates (II, 12) delimited and radial diffuser (c) connected to the end of the diffuser channel with the largest cross-section and the diffuser channel at the top diffuser is located below the radial diffuser above the radial diffuser at the bottom diffuser, characterized in that the radial diffuser (c) has a rounded transition (13) between the diffuser channel (10) and the adjoining end plate (11), that the radial diffuser (c) closest to the diffuser channel (10) part (14) has a smaller cross-section than the adjoining diffuser channel part and its outer peripheral part an increasing cross section from the central radial diffuser part towards the periphery of the radial diffuser, that the radial diffuser (c) has on its periphery superimposed substantially horizontal 16 edge plates, that the end plates (ll, 12) are designed as cones with a large top angle, capillaries with a large radius or as a combination of fl your cones with a large but different top angle, whereby the mantle cleats resp. the steric convex surfaces are facing each other.
SE9301669A 1992-02-25 1993-05-14 Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts SE500275C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9301669A SE500275C2 (en) 1992-02-25 1993-05-14 Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200558A SE505438C2 (en) 1992-02-25 1992-02-25 Method and apparatus for maintaining a near constant overpressure of the above hot water layer in a pressureless hot water accumulator for a district heating system existing water vapor
SE9301669A SE500275C2 (en) 1992-02-25 1993-05-14 Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts

Publications (3)

Publication Number Publication Date
SE9301669D0 SE9301669D0 (en) 1993-05-14
SE9301669L SE9301669L (en) 1993-08-26
SE500275C2 true SE500275C2 (en) 1994-05-24

Family

ID=20385423

Family Applications (2)

Application Number Title Priority Date Filing Date
SE9200558A SE505438C2 (en) 1992-02-25 1992-02-25 Method and apparatus for maintaining a near constant overpressure of the above hot water layer in a pressureless hot water accumulator for a district heating system existing water vapor
SE9301669A SE500275C2 (en) 1992-02-25 1993-05-14 Pressureless hot water storage tank for district heating system - has essentially horizontal radial conduits whose intersection with vertical duct is rounded and have smaller cross-section than adjacent duct parts

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE9200558A SE505438C2 (en) 1992-02-25 1992-02-25 Method and apparatus for maintaining a near constant overpressure of the above hot water layer in a pressureless hot water accumulator for a district heating system existing water vapor

Country Status (5)

Country Link
KR (1) KR0139073B1 (en)
CA (1) CA2090769A1 (en)
DE (1) DE4305867C2 (en)
FI (1) FI930792A0 (en)
SE (2) SE505438C2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29903995U1 (en) 1999-03-05 1999-05-27 MVV Energie AG, 68159 Mannheim Warm house station
KR20100116288A (en) * 2009-04-22 2010-11-01 주식회사 제이앤지 Heat pump hot-water apparatus, controlling of the same
HUE026615T2 (en) 2013-03-26 2016-06-28 Bilfinger Vam Anlagentechnik Gmbh Pressureless accumulator for district heating systems
EP2881672A1 (en) * 2013-12-04 2015-06-10 Siemens Aktiengesellschaft Pressureless heat accumulator with compensation conduit
DE102016100649B4 (en) 2016-01-15 2021-12-30 Kompoferm Gmbh Thermal energy storage in the form of a flat bottom tank
KR101984155B1 (en) 2017-06-23 2019-05-30 플로우테크 주식회사 Variable diffuser
DE102017129184A1 (en) 2017-12-07 2019-06-13 Technische Universität Chemnitz Method and device for loading and / or unloading a thermal energy store
DE202020100895U1 (en) 2020-02-19 2020-03-18 Technische Universität Chemnitz Thermal energy storage, in particular multi-zone storage in the form of a flat-bottom tank
DE102019104367A1 (en) * 2019-02-21 2020-08-27 Technische Universität Chemnitz Thermal energy storage, in particular multi-zone storage in the form of a flat bottom tank
WO2020169153A1 (en) 2019-02-21 2020-08-27 Technische Universität Chemnitz Thermal energy storage device, in particular multi-zonal storage device in the form of a flat-bottomed tank

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD237879A1 (en) * 1985-05-30 1986-07-30 Ve Kom Verbundnetze En Stammbe HEAT STORAGE FOR HEATING WATER

Also Published As

Publication number Publication date
SE9200558D0 (en) 1992-02-25
DE4305867A1 (en) 1993-08-26
CA2090769A1 (en) 1993-08-26
FI930792A0 (en) 1993-02-23
SE505438C2 (en) 1997-08-25
KR930018217A (en) 1993-09-21
DE4305867C2 (en) 2002-03-14
SE9200558L (en) 1993-08-26
KR0139073B1 (en) 1998-05-01
SE9301669D0 (en) 1993-05-14
SE9301669L (en) 1993-08-26

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