WO2010042985A1 - Accumulateur de chaleur - Google Patents

Accumulateur de chaleur Download PDF

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Publication number
WO2010042985A1
WO2010042985A1 PCT/AU2009/001354 AU2009001354W WO2010042985A1 WO 2010042985 A1 WO2010042985 A1 WO 2010042985A1 AU 2009001354 W AU2009001354 W AU 2009001354W WO 2010042985 A1 WO2010042985 A1 WO 2010042985A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
storage device
thermal storage
heat
tank
Prior art date
Application number
PCT/AU2009/001354
Other languages
English (en)
Inventor
Stephen Clifford Bradbury
John Andrew Elkington
Original Assignee
Solar Flare International Limited
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
Priority claimed from AU2008905342A external-priority patent/AU2008905342A0/en
Application filed by Solar Flare International Limited filed Critical Solar Flare International Limited
Priority to AU2009304583A priority Critical patent/AU2009304583A1/en
Publication of WO2010042985A1 publication Critical patent/WO2010042985A1/fr

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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
    • 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
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • 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
    • F24D17/0015—Domestic hot-water supply systems using solar energy
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • 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
    • F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
    • 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
    • F24D2101/00—Electric generators of small-scale CHP 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
    • F24D2101/00—Electric generators of small-scale CHP systems
    • F24D2101/10—Gas turbines; Steam engines or steam turbines; Water turbines, e.g. located in water pipes
    • 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
    • F24D2103/00—Thermal aspects of small-scale CHP systems
    • F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
    • F24D2103/17—Storage tanks
    • 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
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/14—Safety or protection arrangements; Arrangements for preventing malfunction for preventing damage by freezing, e.g. for accommodating volume expansion
    • 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
    • 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

  • This invention relates in general to thermal storage devices, also referred to as thermal batteries.
  • the invention also relates to an energy generation system which uses a thermal storage device.
  • the invention is applicable to heat hot water and to provide energy, such as electricity to the home. It can also be used to store energy in commercial applications. However, it should be noted that the invention is not limited to these applications.
  • BACKGROUND TO THE INVENTION We are becoming more conscious of being environmentally friendly and reducing our carbon footprint. In particular, as a society we are heading towards decreasing our dependence on fossil fuels. Furthermore, the rising demand and cost of electricity, gas and other fuels is creating the necessity for alternative renewable means of energy generation and storage to be developed and used.
  • Australia is a sun drenched country, and like countries with similar climates such as Spain and parts of the USA, the country is exposed to many hours of sunlight each year. Power generated by the sun is becoming a viable option as there is a potentially limitless supply of solar radiation and most importantly because it is a clean form of energy production. Many advances have been made in solar technology, however, once the sunlight is harnessed and the energy generated is used in the home and elsewhere, energy which is not utilised immediately needs to be stored for future use. Presently these methods of storage have significant disadvantages.
  • Chemical storage for example, a lithium ion battery
  • a lithium ion battery is often used to store energy captured from the sun.
  • These chemical storage batteries have a number of disadvantages. A particular disadvantage is that they degrade over time when charged and discharged. In addition, due to their degradation, these batteries dissipate energy over time and constantly need to be charged.
  • Thermal storage is another method of storing energy generated by solar radiation.
  • Thermal storage systems presently in use include pressurised steam, a variety of phase change materials, and molten salts such as sodium and potassium nitrate.
  • One system stores heat in tanks as pressurised steam at high pressure and high temperature. Storage lasts for only approximately an hour. This is a significant disadvantage as it is preferable and beneficial to store energy for a longer period of time and utilise it when needed.
  • Another method of thermal storage is molten salt storage.
  • the molten salt is a mixture of sodium nitrate and potassium nitrate. It is heated to very high temperatures to keep it in a molten state and is stored in an insulated storage tank. Electricity can be generated using the stored thermal energy in the hot salt tank.
  • Other thermal storage systems currently in use use a fluid such as polyethylene glycol (PEG). When heated to 175 degrees Celsius, glycol is transformed into a gaseous state. The gas produced is carcinogenic and obviously extremely dangerous.
  • a thermal storage device including an insulated casing surrounding a tank for holding a fluid.
  • the tank has an inlet port and an outlet port with a fluid flow path there between.
  • the inlet port is connectable to an external fluid circuit containing an apparatus for heating the fluid and the outlet port is also connectable to the external fluid circuit to enable return of fluid discharged from the thermal storage device to the heat source.
  • the tank contains a plurality of heat retaining modules arranged such that, in use, they become submerged within the fluid and are positioned within a primary fluid flow path in which heat from the fluid is transferred to and absorbed by the heat retaining modules.
  • the heat retaining modules are arranged in an array having gaps between each module so as to allow fluid, preferably oil, to flow between and surround each module.
  • the modules are separated by spacers to create fluid flow gaps there between.
  • the array of heat retaining modules preferably is arranged within the primary fluid flow path such that at least one surface of each module extends at an angle with respect to an overall direction of the primary fluid flow path.
  • the tank is configured such that the overall direction of the primary fluid flow path is substantially vertical and the fluid flows generally upward through the array of heat retaining modules.
  • Each heat retaining module preferably has a polygonal cross section having at least two faces inclined relative to the overall direction of the primary fluid flow path. Furthermore, each heat retaining module preferably has a square cross section and the array of modules is arranged within the tank such that side faces of the modules are inclined at 45 degrees relative to the vertical.
  • the fluid flow path includes a fluid distributor connected to the inlet port to facilitate even dispersion of hot fluid flow entering the tank and a fluid return duct arranged to direct cooled fluid back towards the outlet port after it has given up heat to the heat retaining modules.
  • the fluid return duct preferably delivers the cooled fluid to a sump, and the sump contains a fluid collector which is connected to the outlet port.
  • the heat retaining modules are preferably ceramic and more preferably made of white cement.
  • the temperature of the fluid entering the tank is preferably between 100 and 450 degrees Celsius, and more preferably, about 320 degrees Celsius.
  • a system including a heat collector unit and a heat storage unit, wherein the thermal storage device described above preferably forms part of the heat storage unit of the system.
  • the thermal storage device in accordance with the present invention has several advantages.
  • thermal storage device does not significantly degrade when constantly put through the charging and discharging cycle.
  • a suitably sized thermal storage device in accordance with the present invention may be able to store the heat for at least a week rather than only an hour, a significantly longer period of time.
  • the materials used in this thermal storage device have the advantage that they are significantly less flammable, toxic and dangerous than those chemical storage devices currently being used.
  • Figure 1A shows a front view of a thermal storage device according to a preferred embodiment of the present invention with one side of the outer casing removed so that internal components can be seen.
  • Figure 1 B shows a view from the underside of the thermal storage device of Figure 1A.
  • Figure 1C shows a side view of the thermal storage device of Figure 1A, wherein the insulation around the outside of the tank has been removed.
  • Figure 1D shows a cross-sectional view, as viewed from above, of the inside of a base of the thermal storage device of Figure 1 A.
  • Figure 1 E shows an opposite side view (to that of Figure 1 C) of the thermal storage device of Figure 1A.
  • Figure 1 F shows an isometric view of the thermal storage device of Figure
  • Figure 2 shows an enlarged and detailed front view of the thermal storage device with one side of the outer casing removed as shown in Figure 1A.
  • Figure 3 shows an enlarged cross-sectional view of the thermal storage device, taken through A-A' of Figure 2, as viewed from above, showing the fluid distributor.
  • Figure 4A shows a cross-sectional view (as viewed from the rear) of the thermal storage device tank according to the preferred embodiment of the present invention, with heat retaining modules not shown.
  • Figure 4B shows an enlarged view of the corner of the tank in Figure 4A, showing the inlet port, fluid distributor and fluid collector.
  • Figure 5A shows a front view of a fluid collector suitable for use in the preferred embodiment of the present invention.
  • Figure 5B shows an isometric view of the fluid collector in Figure 5A.
  • Figure 6A shows a side view of a module separator suitable for use in the preferred embodiment of the present invention.
  • Figure 6B shows a front view of the module separator shown in Figure 6A.
  • Figure 6C shows an isometric view of the module separator shown in Figure 6A.
  • Figure 7A shows an isometric view of an empty thermal storage device tank according to the preferred embodiment of the present invention, including an expansion tube.
  • Figure 7B shows a detailed view of a breather pipe of Figure 7A.
  • Figure 8A shows a diagram indicating the primary fluid flow path in a front cross-sectional view of a thermal storage device tank according to the preferred embodiment of the present invention.
  • Figure 8B shows the primary fluid flow path in a cross-sectional view of the side of the thermal storage device tank shown in Figure 8A.
  • Figure 9 shows a system using a thermal storage device according to the preferred embodiment of the present invention. DESCRIPTION OF PREFERRED EMBODIMENT
  • FIGs 1A-F show a thermal storage device 1 according to a preferred embodiment of the present invention, as seen from various angles.
  • the thermal storage device 1 includes an insulated casing 2 surrounding a tank 3 for holding a fluid.
  • a tank 3 for holding a fluid.
  • one side of the tank 3 has been removed to expose the components within the thermal storage device.
  • FIG 2 shows an enlarged and more detailed view of the thermal storage device 1 as shown in Figure 1A.
  • the insulated casing of the thermal storage device 1 includes an outer casing 2 and insulation guard (not shown).
  • the outer casing 2 of the tank is formed from strong material, such as, boiler plate or high carbon steel plate, also referred to as steam plate.
  • the outer casing 2 of the tank 3 is coated with a heat resistant paint, resistant to 700 degrees Celsius, which also stops corrosion to the outer casing 2 caused by moisture generated between the insulation and the outer casing 2.
  • the insulation guard comprises insulating material, preferably three layers on the outside of the casing. The layers preferably include two layers of insulation manufactured by Colon Products Pty Ltd, which is sewn on to the outer casing 2.
  • a further insulation layer comprising compressed Superwool® board is bonded to the Colon Products insulation layers. Over the top of the Superwool® insulation is placed cladding to ensure the thermal storage device 1 and the insulation is contained. The loss of heat is significantly lower than most thermal storage units because of the type and amount of insulation used.
  • the tank 3 has an inlet port 4 and an outlet port 8 with a fluid flow path between them.
  • the inlet port 4 is connectable to an external fluid circuit which contains an apparatus for heating the fluid before it enters the tank (see also Figure 9).
  • the outlet port 8 is also connectable to the external fluid circuit to enable the return of fluid discharged from the thermal storage device to the heat source, so as to be reused.
  • the tank 3 as shown in Figure 2 and Figure 8A contains a plurality of heat retaining modules 9 arranged such that, in use, they become submerged within the fluid and are positioned within a primary fluid flow path P in which heat from the fluid is transferred to, and absorbed by, the heat retaining modules 9.
  • the heat retaining modules 9 are arranged in an array. As shown in Figure 8A there are gaps 15 between each module 9 to allow fluid to flow between and surround each module.
  • the array of heat retaining modules is arranged within the primary fluid flow path P such that at least one surface of each module extends at an angle with respect to an overall direction of the primary fluid flow path P.
  • the tank 3 is configured such that the overall direction of the primary fluid flow path P is substantially vertical and the fluid flows generally upwardly through the array of heat retaining modules 9.
  • Conventional fluid flow in prior art thermal storage devices is almost the opposite of such an embodiment, in that, conventionally hot fluid enters at the top of a chamber and flows in a downward direction.
  • the thermal storage device has an inlet 4 coupled to the casing which is connected to a fluid distributor 5 in the thermal storage device 1.
  • the fluid distributor 5 can take various forms, but the following will be described in terms of a preferred embodiment of the present invention wherein the fluid distributor is a serpentine pipe.
  • Figure 3 shows the serpentine pipe 5 formed into a plurality of "S" bends to maximise the dispersion of fluid which can pass into the thermal storage device.
  • the pipe 5 is located at the base of the tank, above a baffle 21 as seen in Figure 8A.
  • Figure 3 shows the pipe 5 has openings 6 in its surface, preferably upper surface, to allow fluid to disperse evenly into the tank.
  • Figures 4A and 4B show an enlarged view of the inlet port 4, fluid distributor 5 and fluid collector 10 in the thermal storage device tank 3 which has one side of the outer casing removed.
  • fluid dispersed into the tank flows within a primary fluid flow path P up between the modules 9, surrounding them.
  • the heat from the fluid is transferred to and absorbed by the heat retaining modules 9.
  • the fluid spills over and into a fluid return duct 14.
  • the fluid return duct 14 is arranged to direct cooled fluid back towards the outlet port 8 after it has given up heat to the heat retaining modules 9.
  • the fluid return duct 14 delivers the cooled fluid to a sump 7, in a preferred embodiment of the present invention.
  • the sump 7 contains a fluid collector 10 which is connected to the outlet port 8.
  • the fluid collector 10 is shown in Figure 5A and 5B.
  • the fluid collector 10 is preferably positioned near the base of the tank but not on the base of the tank. Large impurities remain on the base of the tank while fluid containing only small impurities will be drawn into the fluid collector 10 via small holes in the upper surface of the collector.
  • the fluid then passes through a fine filter (not shown), to remove any impurities, before being drained through the outlet port 8. Alternatively the filter could be located after the outlet port 8.
  • the fluid should not contain impurities as these could damage pumps and other devices which come in contact with the fluid.
  • the fluid is then circulated back to be reheated (see figure 9) and is then pumped back through the thermal storage device again.
  • the fluid is in a continuous circuit.
  • the thermal storage device has an expansion tube.
  • the expansion tube is made up of an expansion pipe 17, a diffuser pipe 22 and a breather pipe 24.
  • one end of the expansion pipe 17 is coupled, via a flange 19, to the bottom of the tank 3 near the sump 7.
  • the expansion pipe 17 then extends up a side of the tank 3 and at its other end is coupled to the diffuser pipe 22 via another flange 23.
  • the diffuser pipe 22 is located above the tank 3 and may be mounted on the top of the tank 3,
  • the diffuser pipe 22 is preferably coiled and on a slight angle (Ze the diffuser pipe 22 is preferably not parallel to the top of the tank 3).
  • the breather pipe 24 may have a curved end which is exposed to the atmosphere.
  • the breather pipe 24 (and preferably the curved end of the breather pipe) preferably contains fine gauze 25 as shown in the enlarged view of Figure 7B.
  • the exposed end of the breather pipe 24 is covered with a cap (not shown).
  • the cap may have several holes which allow air from the atmosphere to enter the top of the breather pipe to assist the gauze to cool and condense any fluid vapours.
  • the breather pipe 24 essentially allows the fluid to fume (vent to the atmosphere).
  • the venting cools the fluid.
  • the fluid makes its way back through the expansion tube (from the breather pipe 24, via the coiled diffuser pipe 22 and then the expansion pipe 17), into the sump 7 to be expelled in the usual manner. If the tank was not fitted with such a device then it would have the potential to explode or be damaged by the expanding fluid.
  • Figure 4A shows at least one valve 18 connected to the tank to allow other products to be fitted to the thermal storage device 1.
  • Products which could be attached to the device may include a heat exchanger for heating water or for space heating.
  • each heat retaining module 9 can be various shapes and cross sections.
  • each heat retaining module 9 has a polygonal cross section having at least two faces inclined relative to the overall direction of the primary fluid flow path.
  • a preferred embodiment describes the modules as having a square cross section.
  • the array of modules is arranged within the tank 3 such that the side faces of the modules 9 are inclined at 45 degrees relative to the vertical, as seen in Figure 2. This provides maximum contact and most uniform flow between the fluid and the modules.
  • the heat retaining modules can be separated by spacers 16, used to create gaps for the fluid to flow between the heat retaining modules.
  • the heat retaining modules are made of ceramic.
  • the ceramic material used in the present invention is made from a combination of cement and water (H2O).
  • H2O cement and water
  • the cement is "white cement” and is mixed with at least 80% pure H 2 O.
  • White cement is usually used for grouting and for aesthetic purposes.
  • Its specific heat value is 1.55 which is very high, making it an efficient storage medium.
  • Pure H 2 O (at least 80-100% pure) must be used when making the ceramic heat retaining modules, as normal water from the tap contains too many impurities, for example, chlorides, fluorides and other elements, which will alter the qualities of the ceramic.
  • the fluid is oil. The fluid is heated to between 100 and 350 degrees Celsius, in a preferred embodiment, but preferably 320 degrees Celsius, before being pumped into the thermal storage device 1.
  • the fluid is approximately 80-200 degrees Celsius when it flows back towards the outlet port 8, via the fluid return duct 14 to the sump 7.
  • FIG. 9 shows a system using a thermal storage device according to a preferred embodiment of the present invention in a domestic situation.
  • Solar collectors 30 mounted on the roof of a house harness solar radiation.
  • Thermal delivery pipes 31 use this to heat up the fluid for use in the thermal storage device 32.
  • the thermal storage device 32 is then, for example, able to heat water for use in the home, for example, in an instantaneous hot water system 33.
  • the thermal storage device 32 is sealed from the rest of the house by a thermetically sealed door 35.
  • the expansion tube could extend up above the roof line of the house.
  • the heat collection unit includes a plurality of heat collectors, preferably solar parabolic trough collectors, and uses a tracking system connected to the heat collectors, to ensure maximum solar radiation is collected.
  • the heat collected from solar radiation is used to heat the fluid which is then pumped into the heat storage unit (thermal storage device).
  • the heat storage unit is an embodiment of the thermal storage device.
  • a control system is used to manage the thermal storage device.
  • the heat storage unit expels cooler fluid, and this cooler fluid is recycled and is reheated by the heat collected via the heat collection unit.
  • the stored energy contained in the heat storage unit is used to heat hot water, eg for domestic showers and bathing.
  • fluid heated by the heat storage unit can be supplied to run a turbine to generate electricity.
  • hot fluid is pumped into a heat exchanger and water is pumped into pipes which pass through the heat exchanger.
  • the hot fluid warms the water in the pipes which can then be used as warm water for showers, washing and other purposes.
  • hot fluid is pumped through pipes in the heat exchanger. Water surrounds the pipes filled with hot fluid and the water is heated by the hot fluid in the pipes.
  • hot fluid can be drawn from the middle of the thermal storage device and circulated via distinct circuits to each room in the home. In this way the hot fluid warms each room individually and if a room is not being used then it need not be heated.
  • a heat exchanger for thermal electrical energy runs at approximately 20psi. As it is run at very low pressure, close to atmospheric pressure, there are no issues with dangerous operations, for example explosions etc.
  • the system can be used domestically or commercially.
  • the power generated by the system can be fed into the electricity grid or the system can be used as a stand-alone unit to provide power to the home or office. If scaled, the system has the potential to function as a power station.
  • the thermal storage device takes initially three to four days to "charge”. Once installed and initially charged, no external power from the grid is required to "top up” or provide extra power to the thermal storage device because the modules retain heat very well and for a long period of time, thus the heat will be stored even when the sun is not shining.

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  • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Ceramic Engineering (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un accumulateur de chaleur (1) comprenant un boîtier isolé (2) entourant un réservoir (3) destiné à contenir un fluide, le réservoir présentant un port d'entrée (4) et un port de sortie (8) ainsi qu'une voie de passage de fluide entre les ports, le port d'entrée (4) pouvant être raccordé à un circuit de fluide externe contenant un appareil de chauffage du fluide et le port de sortie (8) pouvant également être raccordé au circuit de fluide externe pour permettre le retour du fluide évacué de l'accumulateur de chaleur à la source de chaleur. Le réservoir (3) contient une pluralité de modules adiathermiques (9) disposés de façon à ce que, lors de l'utilisation, ils soient immergés dans le fluide et soient positionnés dans une voie de passage de fluide primaire P dans laquelle la chaleur émanant du fluide est transférée aux modules adiathermiques (9) et absorbée par ceux-ci.
PCT/AU2009/001354 2008-10-15 2009-10-15 Accumulateur de chaleur WO2010042985A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2009304583A AU2009304583A1 (en) 2008-10-15 2009-10-15 Thermal storage device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008905342 2008-10-15
AU2008905342A AU2008905342A0 (en) 2008-10-15 Thermal Storage Device

Publications (1)

Publication Number Publication Date
WO2010042985A1 true WO2010042985A1 (fr) 2010-04-22

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PCT/AU2009/001354 WO2010042985A1 (fr) 2008-10-15 2009-10-15 Accumulateur de chaleur

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AU (1) AU2009304583A1 (fr)
WO (1) WO2010042985A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239638A (en) * 1977-11-22 1980-12-16 Uniroyal, Inc. Use of synthetic hydrocarbon oils as heat transfer fluids
US4274396A (en) * 1978-05-01 1981-06-23 Walter Todd Peters Structural solar energy collector
JPS61250492A (ja) * 1985-04-25 1986-11-07 Takasago Thermal Eng Co Ltd 熱交換器
US4809771A (en) * 1987-04-24 1989-03-07 The United States Of America As Represented By The Secretary Of The Air Force Lih thermal storage capsule/heat exchanger
US4993481A (en) * 1988-10-03 1991-02-19 The Agency Of Industrial Science And Technology Thermal storage unit
US5143148A (en) * 1989-01-03 1992-09-01 Berhaz Pty. Limited Thermal storage apparatus
US5239839A (en) * 1991-06-17 1993-08-31 James Timothy W Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media
US6079481A (en) * 1997-01-23 2000-06-27 Ail Research, Inc Thermal storage system
JP2004012093A (ja) * 2002-06-11 2004-01-15 Ishikawajima Harima Heavy Ind Co Ltd 蓄熱装置及び方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239638A (en) * 1977-11-22 1980-12-16 Uniroyal, Inc. Use of synthetic hydrocarbon oils as heat transfer fluids
US4274396A (en) * 1978-05-01 1981-06-23 Walter Todd Peters Structural solar energy collector
JPS61250492A (ja) * 1985-04-25 1986-11-07 Takasago Thermal Eng Co Ltd 熱交換器
US4809771A (en) * 1987-04-24 1989-03-07 The United States Of America As Represented By The Secretary Of The Air Force Lih thermal storage capsule/heat exchanger
US4993481A (en) * 1988-10-03 1991-02-19 The Agency Of Industrial Science And Technology Thermal storage unit
US5143148A (en) * 1989-01-03 1992-09-01 Berhaz Pty. Limited Thermal storage apparatus
US5239839A (en) * 1991-06-17 1993-08-31 James Timothy W Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media
US6079481A (en) * 1997-01-23 2000-06-27 Ail Research, Inc Thermal storage system
JP2004012093A (ja) * 2002-06-11 2004-01-15 Ishikawajima Harima Heavy Ind Co Ltd 蓄熱装置及び方法

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