WO2019080976A1 - Système de chauffage à base de pcm - Google Patents

Système de chauffage à base de pcm

Info

Publication number
WO2019080976A1
WO2019080976A1 PCT/DK2018/050251 DK2018050251W WO2019080976A1 WO 2019080976 A1 WO2019080976 A1 WO 2019080976A1 DK 2018050251 W DK2018050251 W DK 2018050251W WO 2019080976 A1 WO2019080976 A1 WO 2019080976A1
Authority
WO
WIPO (PCT)
Prior art keywords
transferring medium
heating system
heat
inner tank
pcm
Prior art date
Application number
PCT/DK2018/050251
Other languages
English (en)
Inventor
Knud Vandsø Madsen
Morten Veis Donnerup
Original Assignee
Suntherm Aps
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 Suntherm Aps filed Critical Suntherm Aps
Publication of WO2019080976A1 publication Critical patent/WO2019080976A1/fr

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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • 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
    • F24D3/082—Hot water storage tanks specially adapted therefor
    • F24D3/085—Double-walled tanks
    • 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • 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
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
    • 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
    • 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
    • F28D7/10—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 arranged one within the other, e.g. concentrically
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • 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
    • F24D2200/12—Heat pump
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
    • 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
    • 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
    • F28D2020/0082—Multiple tanks arrangements, e.g. adjacent tanks, tank in tank
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • 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 relates to a complete integrated heating system for heating of residential buildings and, potentially, domestic hot water therefore.
  • the present invention relates to a heating system comprising a heat source, such as a heat pump, and an inner tank, which inner tank is arranged within an outer tank, wherein the inner tank comprises a Phase Change Material (PCM) in direct physical contact with a secondary heat-transferring medium and a diffuser unit arranged beneath the PCM, through which diffuser unit the secondary heat-transferring medium is brought into contact with the PCM, wherein the inner tank is surrounded by a fluid, preferably water, within the outer tank, which fluid can be brought into fluid connection with a fluid-based heating system, for instance a central heating system of a building, and wherein the heat source is arranged to circulate a primary heat-transferring medium, such as a hotgas, through the outer tank for supplying heat energy to the heating system, and a circulation pump is arranged to pump the secondary heat-transferring medium from above the PCM within the inner tank passing through the outer tank to the diffuser unit at the bottom of the inner tank, the piping for the circulating primary heat-transferring medium and the piping for the secondary
  • a heating system configured like this ensures an optimised heat exchange between the primary heat-transferring medium and the secondary heat-transferring medium in the outer tank due to the close vicinity of the relevant piping and between the secondary heat-transferring medium and the PCM in the inner tank due to the use of "Direct Heat Transfer” through the direct physical contact between the secondary heat-transferring medium and the PCM.
  • the diffuser unit comprises a perforated plate through the perforations of which the secondary heat-transferring medium is arranged to penetrate the PCM from the bottom and upwards.
  • the perforated plate is a metal plate with at least 1000, preferably at least 5000, perforations, with diameters in the range from 1 mm to 5 mm, preferably around 2 mm.
  • the use of this number and dimensions of the perforations ensures and efficient penetration of the PCM by the secondary heat-transferring medium and prevents small flakes of solidified PCM from ending up under the perforated plate.
  • the PCM is sodium acetate trihydrate or another salt with similar latent heat properties. Sodium acetate trihydrate has proven to have latent heat properties very well suited for this purpose.
  • the secondary heat-transferring medium is a thermal oil.
  • the heating system comprises a primary heat- transferring medium spiral pipe arranged around the inner tank for circulation of the primary heat-transferring medium within the outer tank, which primary heat- transferring medium spiral pipe is arranged within another spiral pipe with larger diameter, through which other spiral pipe the secondary heat-transferring medium flows on its way from the circulation pump to the diffuser unit, preferably in the opposite direction of the flow of the primary heat-transferring medium.
  • the heating system comprises one or more primary heat-transferring medium spiral pipes arranged around the inner tank for circulation of the primary heat-transferring medium within the outer tank, which one or more primary heat-transferring medium spiral pipes are arranged within a casing around the inner tank, through which casing the secondary heat-transferring medium flows on its way from the circulation pump to the diffuser unit, preferably in the opposite direction of the flow of the primary heat-transferring medium.
  • the use of a casing around the inner tank for the secondary heat-transferring medium allows for splitting the circulation of primary heat-transferring medium within the outer tank into more than one spiral pipe, thereby reducing the pressure drop along the spiral pipes.
  • the primary heat-transferring medium flows through the primary heat-transferring medium spiral pipe in a downward direction, whereas the secondary heat-transferring medium flows through the other spiral pipe or the casing in an upward direction.
  • This configuration optimises the heat exchange, because the heat energy is transferred from the hotter primary heat-transferring medium to the cooler secondary heat-transferring medium.
  • the inner tank is pressurised and further comprises a gas, preferably C0 2 or N 2 , and is provided with a safety valve for letting out gas if the pressure within the inner tank exceeds a predefined limit and with a pressure gauge for measuring the pressure of the gas within the inner tank.
  • a gas preferably C0 2 or N 2
  • the heating system further comprises a service pipe for giving access to the internal parts of the inner tank and means for plugging the service pipe hermetically during operation of the system.
  • the heating system further comprises a controller, which is connected, for instance wirelessly via the internet, to a central server, which central server is arranged to monitor and control one or more such heating systems in such a way that the heat production of each of the one or more such heating systems is optimised with respect to economic operation of the heating system.
  • the central server when planning the heat production of a given heating system, is arranged to take into consideration one or more of the following parameters:
  • Fig. 1 is a schematic diagram of the general configuration of a heating system according to an embodiment of the invention
  • Fig. 2 is a cross-sectional view of the tanks and piping of a heating system according to a first embodiment of the invention
  • Fig. 3 is a cross-sectional view of the tanks and piping of a heating system according to a second embodiment of the invention. Detailed description of the invention
  • Fig. 1 is a schematic diagram of the general configuration of a heating system 1 according to an embodiment of the invention. It illustrates how the heating system 1 basically consists of an inner tank 2 arranged within an outer tank 3, a circulation pump 7, a diffuser unit 11, a heat pump 12 and some piping.
  • the inner tank 2 comprises a Phase Change Material (PCM) 19, which is not shown in this figure.
  • PCM 19 is sodium acetate trihydrate, which is a salt having its melting point at 58° C. In the melting process, this salt accumulates large amounts of thermal energy, which is gradually released again as the salt solidifies. Thus, the salt works as a heat storage, in which heat energy is stored when the salt melts and "withdrawn” when the salt solidifies.
  • Three fluids circulate in the heating system 1, namely a primary heat-transferring medium, a secondary heat-transferring medium and a fluid surrounding the inner tank 2.
  • the circulation of the secondary heat-transferring medium which in this case is a thermal oil 20, is controlled by the circulation pump 7.
  • the thermal oil 20 is sucked from above the PCM within the inner tank 2 through a thermal oil suction pipe 6 and forwarded under pressure through a thermal oil pressurised pipe 8 to the bottom of the outer tank 3.
  • This thermal oil pressurised pipe 8 is shown outside the outer tank 3 in Fig. 1, but it can pass through the outer tank 3 or the inner tank 2 on its way to the bottom of the outer tank 3 as can be seen in the embodiments illustrated in Figs. 2 and 3, which are described below.
  • the thermal oil 20 moves upward around the inner tank 2, for instance through a thermal oil spiral pipe 9 as illustrated in Figs. 1 and 2 or through a thermal oil casing 23 as illustrated in Fig. 3. Having reached its uppermost point after this upward motion, the thermal oil 20 is lead down to the diffuser unit 11 at the bottom of the inner tank 2 through a thermal oil diffuser pipe 10.
  • this thermal oil diffuser pipe 10 is drawn inside the outer tank, but in other embodiments, such as the ones illustrated in Figs. 2 and 3, it passes through the inner tank 2 down to the diffuser unit 11.
  • the main part of this diffuser unit 11 is a micro-perforated plate, typically a metal plate perforated with a large number of perforations with diameters in the range from 1 mm to 5 mm.
  • the micro-perforated plate ensures that the thermal oil 20 under it is equally distributed across the bottom of inner tank 2, from where it penetrates the PCM 19 through the perforations from the bottom and upwards back to the original position on top of PCM 19.
  • the direct physical contact between the thermal oil 20 and the PCM 19 ensures an optimal heat transfer between the two substances.
  • the perforations of the diffuser unit 11 also function as a sieve ensuring that small flakes of solidified PCM 19 do not end up under the micro-perforated plate if the thermal oil 2 is pressed back through the micro-perforated plate due to the higher density of the PCM 19. Such flakes of PCM 19 under the micro-perforated plate would be disruptive for the equal distribution of thermal oil 20.
  • thermal oil 20 A reason for choosing a thermal oil 20 as the secondary heat-transferring medium is that sodium acetate trihydrate is soluble in water. Thus, if the PCM 19 is diluted with water, its latent heat capacity will be reduced significantly.
  • the "heat battery” formed by the PCM 19 is "charged” by the heat pump 12, which circulates the primary heat-transferring medium, typically a hotgas, through a hotgas inlet pipe 13, downwards through a hotgas spiral pipe 14 arranged within the outer tank 3 around the inner tank 2 and back to the heat pump 12 through a hotgas outlet pipe 14.
  • the primary heat-transferring medium typically a hotgas
  • the hotgas spiral pipe 14 On its way down through the hotgas spiral pipe 14, which is in close contact with the thermal oil 20 moving upwards through the outer tank 3 as described above, heat energy from the hot circulated hotgas is transferred to the cooler thermal oil 20. Also, some heat energy is transferred from the hotgas spiral pipe 14 to the fluid surrounding the inner tank 2 and to the inner tank 2 through radiation.
  • the thermal oil 20 When the thermal oil 20 has been heated, preferably to a temperature 3-5 °C above the melting point of the PCM 19, it is pumped to the diffuser unit 11 below the PCM 19. Due to the lower density of the thermal oil 20 than of the PCM 19, the thermal oil 20 will ascend through the PCM 19 and heat energy will be transferred from the thermal oil 20 to the cooler PCM 19 as the thermal oil 20 passes through. When the PCM 19 reaches its melting temperature, it will absorb large amounts of heat energy and melt. The thermal oil 20 reaching the top of the PCM layer 19 can then be sucked up by the circulation pump 7 and the process can be repeated.
  • the third fluid circulating in the heating system 1 is the fluid surrounding the inner tank 2 within the outer tank 3.
  • this fluid is central heating water, which can be in fluid communication with a central heating system through a hot water forward pipe 4 and a cold-water return pipe 5.
  • the "heat battery” is “discharged” by drawing off hot water from the top of the outer tank 3 through the hot water forward pipe 4 and returning colder water to the bottom of the outer tank 3 through the cold water return pipe 5, the water having given off some of its heat energy on its way through a central heating unit (not shown) or the like.
  • the cold water entering the outer tank 3 at the bottom thereof receives heat energy from the outer surface of the inner tank 2 and ascends towards the top of the outer tank 3 (so-called stratification).
  • heat energy is drawn from the PCM 19 in the inner tank 2, because the thermal oil 20 passing through the diffuser unit 11 and the PCM 19 will have been cooled down by the colder water in the outer tank 3, typically to a temperature below the temperature of the PCM 19.
  • the thermal oil 20 receives heat energy from the PCM 19, which energy in turn will be transferred to the water in the outer tank 3 during the next passing thereof by the thermal oil.
  • a typical heating system 1 can deliver the necessary heat energy for the central heating system of a building (radiators, floor heating and/or caloriferes) as well as for domestic hot water at 50° C for a normal private household.
  • Figs. 2 and 3 are cross-sectional views of the tanks and piping of a heating system 1 according to a first and a second specific embodiment of the invention, respectively.
  • the inner tank 2 is pressurised and comprises an amount of pressurised gas 21, preferably C0 2 or N 2 , forming a third layer above the PCM 19 and the thermal oil 20 on top thereof.
  • a safety valve (not shown) ensures that gas 21 is let out of the heating system if the pressure therein exceeds a predefined limit.
  • a pressure gauge (not shown) is provided for measuring the pressure of the gas 21 within the inner tank 2.
  • both of these two embodiments comprise a service pipe 22 arranged at the top of the heating system 1, through which service pipe 22 access can be obtained to the inside of the inner tank 2 when the heating system 1 is not in operation, for instance for taking test samples of the PCM 19.
  • the difference between the two embodiments shown in Figs. 2 and 3, respectively, is to be found in the outer tank 3 outside the inner tank 2.
  • the hotgas spiral pipe 14, in which hotgas flows downwards through the outer tank 3 is arranged within a thermal oil spiral pipe 9 with larger diameter, in which the thermal oil 20 flows upwards, i.e. in the opposite direction.
  • This configuration constitutes a very efficient heat exchanger for transferring heat energy between the two substances.
  • the thermal oil spiral pipe 9 has been replaced by a thermal oil casing 23, in which the thermal oil 20 flows upwards through the outer tank 3 and around the inner tank 2.
  • a thermal oil casing 23 in which the thermal oil 20 flows upwards through the outer tank 3 and around the inner tank 2.
  • an upper connection part 24 splits up the flow of hotgas from the hotgas inlet pipe 13 into two hotgas spiral pipes 14 at the top of the thermal oil casing 23, whereas a lower connection part 25 collects the flow of hotgas from these two hotgas spiral pipes 14 into a common flow leaving the outer tank 3 through a hotgas outlet pipe 15 after having circulated a few times in a sub-cooler spiral 16 around the lowermost part of the inner tank 2.
  • a Smart Grid Controller can be connected to a central server via the internet for controlling the heating system 1. Thus, it can be ensured that heat energy is produced under optimal meteorological and economic conditions and with the highest possible Coefficient of Performance (COP) taking into account the consumption levels and patterns of the house.
  • COP Coefficient of Performance
  • the controller collects all vital operational data from the heating system 1 and reports to the central server, from where the operation of a large number of installed heating systems 1 can be monitored and controlled.
  • the central server is also arranged to collect information from electricity networks about actual loads and electricity prices as well as meteorological information such as local weather forecasts.
  • the central server is arranged to adapt to the different consumers' individual consumption patterns taking the weekly cycle into consideration when planning the heat production of the individual heating systems 1 monitored and controlled by the server.
  • the controller Being dependent on internet access, the controller is equipped with an internet connection (for instance Ethernet, WiFi or 3G). In case the controller loses the connection to the central server, a thermostatic control will take over and ensure that the consumer does not experience any lack of heat or hot water.
  • the heating system 1 constitutes a complete integrated heating system 1 for heating and, potentially, domestic hot water of residential buildings.
  • the system is especially developed in order to offer a direct substitution for oil, gas or pellet furnaces in the older part of the housing stock.
  • the system is also suitable for substitution of other heat sources and in modern buildings. List of reference numbers

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)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un système de chauffage (1) comprenant une source de chaleur (12) et un réservoir interne (2) agencé à l'intérieur d'un réservoir externe (3), le réservoir interne comprenant un matériau à changement de phase (PCM selon l'abréviation anglo-saxonne) (19) en contact physique direct avec un agent de transfert de chaleur secondaire (20) et un ensemble diffuseur (11) agencé en dessous du PCM, le réservoir interne étant entouré d'un fluide à l'intérieur du réservoir externe. La source de chaleur est conçue pour faire circuler un agent de transfert de chaleur primaire à travers le réservoir externe, et une pompe de circulation (7) est conçue pour pomper l'agent de transfert de chaleur secondaire à partir du dessus du PCM à l'intérieur du réservoir interne et à travers le réservoir externe vers l'ensemble diffuseur au niveau de la partie inférieure du réservoir interne, la tuyauterie (14) destinée à l'agent de transfert de chaleur primaire en circulation et la tuyauterie (9, 23) destinée à l'agent de transfert de chaleur secondaire à l'intérieur du réservoir externe étant conçues pour permettre un échange d'énergie thermique entre les agents de transfert de chaleur primaire et secondaire.
PCT/DK2018/050251 2017-10-23 2018-10-09 Système de chauffage à base de pcm WO2019080976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201770799A DK179513B1 (en) 2017-10-23 2017-10-23 PHASE CHANGE MATERIAL-BASED HEATING SYSTEM
DKPA201770799 2017-10-23

Publications (1)

Publication Number Publication Date
WO2019080976A1 true WO2019080976A1 (fr) 2019-05-02

Family

ID=63861957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2018/050251 WO2019080976A1 (fr) 2017-10-23 2018-10-09 Système de chauffage à base de pcm

Country Status (2)

Country Link
DK (1) DK179513B1 (fr)
WO (1) WO2019080976A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112021003938T9 (de) 2020-11-27 2024-04-11 Rohm Co., Ltd. Halbleiterbauteil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996894A (en) * 1956-12-13 1961-08-22 Gen Electric Method and apparatus for the recovery of latent heat of fusion
DE2735197A1 (de) * 1976-08-06 1978-02-09 Norman Donald Greene Verfahren und einrichtung zur speicherung von energie und ihrer rueckwandlung in der form von waerme
EP0079452A1 (fr) * 1981-11-04 1983-05-25 Michael Laumen Accumulateur d'énergie pour le stockage de chaleur latente en substances d'accumulation réagissant chimiquement ou substances d'accumulation avec changement de phase
CH648412A5 (en) * 1980-06-09 1985-03-15 Sulzer Ag Method for measuring and controlling the state of charge of a latent heat store, and device for carrying out the method
WO2002012814A1 (fr) * 2000-08-03 2002-02-14 Globe Thermal Energy Ag Accumulateur de chaleur latente

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DE2735197A1 (de) * 1976-08-06 1978-02-09 Norman Donald Greene Verfahren und einrichtung zur speicherung von energie und ihrer rueckwandlung in der form von waerme
CH648412A5 (en) * 1980-06-09 1985-03-15 Sulzer Ag Method for measuring and controlling the state of charge of a latent heat store, and device for carrying out the method
EP0079452A1 (fr) * 1981-11-04 1983-05-25 Michael Laumen Accumulateur d'énergie pour le stockage de chaleur latente en substances d'accumulation réagissant chimiquement ou substances d'accumulation avec changement de phase
WO2002012814A1 (fr) * 2000-08-03 2002-02-14 Globe Thermal Energy Ag Accumulateur de chaleur latente

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112021003938T9 (de) 2020-11-27 2024-04-11 Rohm Co., Ltd. Halbleiterbauteil

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