EP2176601A2 - Système d'accumulation de chaleur du type à stratification - Google Patents

Système d'accumulation de chaleur du type à stratification

Info

Publication number
EP2176601A2
EP2176601A2 EP08790075A EP08790075A EP2176601A2 EP 2176601 A2 EP2176601 A2 EP 2176601A2 EP 08790075 A EP08790075 A EP 08790075A EP 08790075 A EP08790075 A EP 08790075A EP 2176601 A2 EP2176601 A2 EP 2176601A2
Authority
EP
European Patent Office
Prior art keywords
tank
water
pipes
accumulation system
valve
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Withdrawn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
EP08790075A
Other languages
German (de)
English (en)
Inventor
Gianfranco Bonomi
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.)
Five-t Srl
Original Assignee
Five-t Srl
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 Five-t Srl filed Critical Five-t Srl
Publication of EP2176601A2 publication Critical patent/EP2176601A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/06—Solid fuel fired boiler
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/14—Solar energy
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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 present invention generally relates to the field of liquid accumulators with heat energy content and concerns in particular an innovative system of accumulation in a tank of a heat conveying liquid, normally water, in superimposed layers depending on the temperature of arrival of the liquid itself.
  • a heat conveying liquid normally water
  • a hot liquid normally water, coming from any heating source, whether solar, fuel fired, or from water-cooled appliances, perhaps at different temperatures, can be accumulated in layers in a tank for the temporary storage of heat energy. Accumulation is in closed cycle and the stored heat energy can then be used, by means of a possible heat exchanger, for several other uses, such as the production of domestic hot water, hot water for local floor heating or by means of radiators, etc.
  • heat accumulation systems have already been proposed and used in which the water at different temperatures is collected in superimposed layers starting with the coldest at the bottom up to the hottest at the top, with the possibility of then taking from the system the hottest water or that at the desired layer level for the contemplated use.
  • Such accumulation is based on the physical principle whereby the specific weight of the water varies together with the variation of the temperature, so that in a mass of water the coldest is at the bottom while the hottest rises and occupies the upper layers.
  • the temperature of the water collected in a tank will vary in the sense of increasing from the bottom upwards as long as, obviously, care is taken not to cause any mixing and ⁇ consequently, to mix the water in the various layers.
  • the water is conveyed and collected in the storage tank through a column, substantially cylindrical, built in the tank itself and to which are connected at various levels both the water inlet pipes and the outlet pipes with a relatively complicated network of channels that is difficult and costly to make.
  • the column is configured to define a concentric inner chamber and outer chamber, where the first chamber communicates with the second through numerous openings, and the second chamber communicates with the inside of the tank through another series of radial openings, with the result that the system is even more complex.
  • the object of the present invention is to present upgrading solutions of a constructive and functional nature to the stratification heat accumulation systems to overcome the drawbacks of known technology and with the intention of providing an efficient accumulation system, that is simpler and cheaper to make, with possible easy access for maintenance and that can be more precisely controlled through a control unit.
  • a closed-circuit heat accumulation system comprising a substantially cylindrical tank arranged vertically, annular channels arranged at various levels on the inner surface of the tank corresponding to the layers of water to be accumulated and in relation to the temperatures of the water available from time to time, water supply and return pipes forming part of the circuit connected from outside to said tank at the level of each of said annular channels, self-regulating valve means for controlling the supply and return in the tank, through said pipes and said annular channels, of the water at different temperatures for its stratification, and means for programming the operation of said valve means according to the temperature of the circulating water.
  • the annular channels can be at least in number equal to the layers of water in the tank and made in at least two different ways with large openings turned towards the centre of the tank.
  • their location on the cylindrical inner wall of the tank is such as to allow a high volume of inflowing and outflowing water, at low speed and therefore without any vortical movement which could cause the mixing of the water layers.
  • their manufacture in primis, and their fastening and any access inside the tank are very simple and easy, and do not affect the actual storage capacity of the tank.
  • the self-regulating valve devices can consist of multiway ball valves, for example of the type described in another patent application of the same applicant, and include at least a first valve to which the water supply pipes can be connected at the various tank levels and at least a second valve to which the water return pipes can be connected from the various tank levels.
  • the same pipes, connected to a single self-regulating multiway valve could also be used alternately in one direction for the supply and in the opposite direction for the return of water from the tank.
  • the Fig. 1 shows a schematic view of the system with transparent view of accumulation tank
  • the Fig. 2 shows an enlarged view of a detail of the accumulation tank to highlight two types of inner annular channels.
  • the system comprises a container or tank 11 for the layer accumulation 11' of hot water at different temperatures, which can be produced or come, by means of at least one pump 12 or with natural circulation systems, from different heat sources operating at variable temperature, such as a solar panel 13, a boiler 14 and also a water-cooled appliance.
  • the accumulation tank 11 which will be insulated towards the outside or made of a heat-insulating material, is substantially cylindrical and arranged vertically. At the top, it can be opened for operation at atmospheric pressure or closed for operation under pressure, according to need.
  • annular channels 15 arranged at various levels, in a number equal at least to the layers of water 11' at different temperature to be defined in the tank, the layers of water being three or more depending on the storage capacity and height of the tank and on the temperatures of the available hot-water sources.
  • Such annular channels 15 are fixed, for example by welding, to the cylindrical inner surface of the tank, and each of them can be made starting with a tubular element 16, with round or not round section, bent in a round shape and having cracks or side openings 17, as large as possible, turned towards the centre of the tank -Fig. 2.
  • each annular channel 15 will be formed starting with two metal-plate round elements 18 each having a first wing 19 that fastens onto the inner surface of the tank and a second wing 20, angled with respect to the first and which extends towards the inside of the tank.
  • the two initial elements are opposite and associated so that between them they delimit an annular continuous duct and so their second wings 20 converge to define a slit or opening 21 such as to place in communication said duct with the inside of the tank- Fig. 2.
  • Said slit 21 can be without interruption, or interrupted, for example, at the inlet and outlet parts of the liquid in the tank.
  • a number of first pipes 22 are fastened for supplying water in the tank at different temperatures and each second pipes 23 for the return of the water from the tank.
  • each pipe 22, 23 is in communication with a respective annular channel and the water flows towards and from the tank are controlled by means of valve units.
  • each valve unit can consist of a multiway self-adjusting ball valve with bi-directional use.
  • the supply pipes 22 can be connected, directly or through a manifold, to an equal number of outlets 25 of a first multiway ball valve 24 having an inlet 26 connected to any hot water source 13, 14 of the aforementioned type.
  • the return pipes 23 are connected, these too directly or by means of a manifold, to an equal number of inlets of another multiway ball valve having in turn an outlet connected to the same hot water source, to close the hydraulic circuit.
  • Each of said ball valves can be controlled by means of a servo-motor prepared and controlled according to a preset principle to cause a rotation of the respective ball shutter and place in communication from time to time and selectively, in the first valve the inlet way 26 with at least one outlet way 25 of the water towards the tank and, in the second valve one or the other of the inlet ways with the outlet way of the water towards the source 13 or 14, in answer to a signal provided from outside.
  • This signal can be a temperature signal read with at least a special probe upstream and/or downstream of each valve or at least of the valve connected to the supply pipes.
  • the circulation of the water from the heating source to and from the accumulation tank can be completed with just one series of pipes connected to each single annular channel inside the tank and connected to a single multiway valve.
  • the pipes will be used in one direction for supplying water to the tank and in the opposite direction for the return of the water from the tank, and the valve will be controlled consequently.
  • a circuit 30 with a pump 31 for taking water from the accumulation tank 11 at the level of the upper layer or at any other level and with the aid of a multiway valve 32 also of the aforementioned type for using the thermal content of the water for heating, through a possible heat exchanger 33 and a possible auxiliary tank 34, of another liquid, normally water, to be used as domestic water or heat conveying fluid in local heating plants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

L'invention concerne un système d'accumulation de chaleur en circuit fermé comprenant un réservoir sensiblement cylindrique disposé verticalement, des canaux annulaires agencés à divers niveaux sur la surface intérieure du réservoir en alignement avec les couches d'eau qui doit être accumulée, et en rapport avec la température de l'eau disponible occasionnellement, une alimentation en eau et des tuyaux de retour dans le circuit raccordé depuis l'extérieur audit réservoir au niveau de chacun desdits canaux annulaires, un moyen de soupape à régulation automatique pour contrôler l'alimentation et le retour dans le réservoir, à travers lesdits tuyaux et lesdits canaux annulaires, de l'eau à différentes températures pour sa stratification, et des moyens pour programmer le fonctionnement desdits moyens de soupape selon la température de l'eau en circulation.
EP08790075A 2007-07-23 2008-07-22 Système d'accumulation de chaleur du type à stratification Withdrawn EP2176601A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000103A ITBS20070103A1 (it) 2007-07-23 2007-07-23 Sistema di accumulo termoidraulico a stratificazione
PCT/IT2008/000496 WO2009013781A2 (fr) 2007-07-23 2008-07-22 Système d'accumulation de chaleur du type à stratification

Publications (1)

Publication Number Publication Date
EP2176601A2 true EP2176601A2 (fr) 2010-04-21

Family

ID=40134714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08790075A Withdrawn EP2176601A2 (fr) 2007-07-23 2008-07-22 Système d'accumulation de chaleur du type à stratification

Country Status (3)

Country Link
EP (1) EP2176601A2 (fr)
IT (1) ITBS20070103A1 (fr)
WO (1) WO2009013781A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112484317A (zh) * 2020-11-02 2021-03-12 国家电投集团科学技术研究院有限公司 蓄热装置、蓄热系统及蓄热系统的控制方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBS20090083A1 (it) * 2009-05-07 2010-11-08 Five T Srl Metodo e impianto di accumulo a stratificazione e di circolazione di acqua calda
DE102009057417B4 (de) * 2009-12-08 2011-09-22 Siemens Aktiengesellschaft Speichervorrichtung und Verfahren zu deren Betrieb
SE534695C2 (sv) 2009-12-23 2011-11-22 Fueltech Sweden Ab Ackumulatortank
DE202010014435U1 (de) * 2010-10-20 2011-04-07 Comfort Sinusverteiler Gmbh Hydraulische Weiche einer Heiz- oder Kühlanlage
AT510440B1 (de) * 2011-01-17 2012-04-15 Forstner Maximilian Fluidspeicher
AT513841B1 (de) * 2013-04-23 2014-08-15 Windhager Zentralheizung Technik Gmbh Verfahren zur Beheizung von Gebäuden
DE102013108998B4 (de) * 2013-08-20 2021-07-08 GWK-Kuhlmann Gesellschaft für Wärme, Kälte- und Klimatechnik mit beschränkter Haftung Temperier- und Wärmerückgewinnungssystem für wenigstens eine mit einem Fluid temperierbare Maschine und Verfahren zum Betreiben eines Temperier- und Wärmerückgewinnungssystem
EP2955459A1 (fr) * 2014-06-12 2015-12-16 Bosch Termotecnologia S.A. Dispositif d'alimentation, vanne multi-voies et système et procédé de fonctionnement d'un tel système

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB488333A (en) * 1936-09-02 1938-07-05 Siemens Ag Improvements in or relating to electrically heated hot water heating installations
GB1518789A (en) * 1975-06-24 1978-07-26 Carter B R Hot water storage and apparatus therefor
DE19628818A1 (de) * 1996-07-17 1998-01-22 Alois Sauter Heizungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009013781A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112484317A (zh) * 2020-11-02 2021-03-12 国家电投集团科学技术研究院有限公司 蓄热装置、蓄热系统及蓄热系统的控制方法

Also Published As

Publication number Publication date
WO2009013781A3 (fr) 2011-10-13
WO2009013781A2 (fr) 2009-01-29
ITBS20070103A1 (it) 2009-01-24

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