WO2012130286A1 - Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium - Google Patents
Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium Download PDFInfo
- Publication number
- WO2012130286A1 WO2012130286A1 PCT/EP2011/054813 EP2011054813W WO2012130286A1 WO 2012130286 A1 WO2012130286 A1 WO 2012130286A1 EP 2011054813 W EP2011054813 W EP 2011054813W WO 2012130286 A1 WO2012130286 A1 WO 2012130286A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- storage medium
- aluminum
- thermal energy
- energy storage
- percentage
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors 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
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Definitions
- This invention relates to a thermal energy storage medium and a use of the thermal storage medium.
- a TES medium The purpose of a TES medium is to store and to transport an excess of solar energy provided by the heat transfer fluid of a solar field. The stored excess of thermal energy can be delivered back to the heat transfer fluid according to needs of the solar power plant.
- a thermal energy storage medium comprising at least one phase change material with an aluminum-zinc alloy.
- the alloy can comprise further metals like copper or magnesium, too.
- Such an alloy is known as "Zamak".
- thermal storage medium in a solar power plant for converting solar energy into electrical energy is provided.
- the mixture is a phase change material.
- thermal energy can be stored.
- reversed phase change of the phase change material the stored thermal energy can be delivered again.
- aluminum-zinc alloy is selected from the range between 1 wt% and 10 wt% and more preferably selected from the range between 3 wt% and 7 wt%.
- a percentage by weight of zinc in the aluminum-zinc alloy is selected from the range between 90 wt% and 99 wt% and preferably selected from the range between 93 wt% and 97 wt%.
- the percentage by weight of aluminum is about 5 wt% and the percentage of weight of zinc is about 95 wt%. Thereby a deviation of up to 5 % is
- the percentage by weight of aluminum ranges from 4.75 wt% to 5.25 wt%.
- the percentage by weight of aluminum is 4.94 wt% and the percentage of weight of zinc is 95.06 wt%.
- the described heat storage medium has excellent physical characteristics. It has an appropriate melting and
- the thermal energy storage medium comprises a phase change material with an aluminum-zinc alloy.
- the aluminum-zinc alloy comprises following composition: 4.94 wt% Al;
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A thermal energy storage medium is provided comprising at least one phase change material with an aluminum-zinc alloy. In a preferred embodiment a percentage by weight of aluminum is 4.94 wt% and the percentage of weight of zinc is 95.06 wt%.The aluminum-zinc ally is called Zamak. The heat storage medium has excellent physical characteristics. It has appropriate melting and solidification temperatures as well as an appropriate heat of fusion. It has a high density. As a result relatively low costs per thermal energy storage volume capacity are available. Additionally degradation problems and corrosion with container materials play nearly no role. The use of such the thermal storage medium relates to a solar power plant for converting solar energy into electrical energy.
Description
Description
THERMAL ENERGY STORAGE MEDIUM WITH ALUMINUM-Z INC ALLOY AND USE OF THE THERMAL ENERGY STORAGE MEDIUM
BACKGROUND OF THE INVENTION
1. Field of the Invention This invention relates to a thermal energy storage medium and a use of the thermal storage medium.
2. Description of the Related Art From US 6 828 990 Bl a low-melting point heat transfer fluid (HTF) with a mixture with alkali nitrate salts is known. This mixture can be used as thermal energy storage (TES) medium in a solar power plant for converting solar energy into
electrical energy.
The purpose of a TES medium is to store and to transport an excess of solar energy provided by the heat transfer fluid of a solar field. The stored excess of thermal energy can be delivered back to the heat transfer fluid according to needs of the solar power plant.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a thermal energy storage medium which can be used in solar energy power plants .
This object is achieved by the invention specified in the claims .
A thermal energy storage medium is provided comprising at least one phase change material with an aluminum-zinc alloy. Besides aluminum and zinc the alloy can comprise further metals like copper or magnesium, too. Such an alloy is known as "Zamak".
Additionally a use of the thermal storage medium in a solar power plant for converting solar energy into electrical energy is provided.
The mixture is a phase change material. By a phase change of the phase change material thermal energy can be stored. By a reversed phase change of the phase change material the stored thermal energy can be delivered again.
Preferably a percentage by weight of aluminum in the
aluminum-zinc alloy is selected from the range between 1 wt% and 10 wt% and more preferably selected from the range between 3 wt% and 7 wt%. A percentage by weight of zinc in the aluminum-zinc alloy is selected from the range between 90 wt% and 99 wt% and preferably selected from the range between 93 wt% and 97 wt%. In a further preferred embodiment the percentage by weight of aluminum is about 5 wt% and the percentage of weight of zinc is about 95 wt%. Thereby a deviation of up to 5 % is
possible. For instance, the percentage by weight of aluminum ranges from 4.75 wt% to 5.25 wt%.
Preferably the percentage by weight of aluminum is 4.94 wt% and the percentage of weight of zinc is 95.06 wt%.
The described heat storage medium has excellent physical characteristics. It has an appropriate melting and
solidification temperature as well as an appropriate heat of fusion. It has a high density. This leads to relatively low costs per thermal energy storage volume capacity.
Additionally degradation problems and corrosion with
container materials play nearly no role.
DETAILED DESCRIPTION OF THE INVENTION
The thermal energy storage medium comprises a phase change material with an aluminum-zinc alloy. The aluminum-zinc alloy comprises following composition: 4.94 wt% Al;
95.06 wt% Zn.
The physical characteristics (liquidus temperature Tnq in °C, enthalpy of melting ΔΗΜ in kJ/kg at the liquidus temperature, enthalpy of melting ΔΗν in MJ/m3 of liquid at the liquidus temperature, and solid phases formed for a total mass of 1 kg) of this mixture are calculated:
Table :
Tliq (°C) ΔΗΜ ΔΗν
(kJ/kg) (MJ/m3 )
282 124.3 754.0
Claims
1. Thermal energy storage medium comprising at least one phase change material with an aluminum-zinc alloy.
2. Thermal energy storage medium according to claim 1, wherein a percentage by weight of aluminum in the aluminum- zinc alloy is selected from the range between 1 wt% and 10 wt% and preferably selected from the range between 3 wt% and 7 wt%.
3. Thermal energy storage medium according to claim 1 or claim 2, wherein a percentage by weight of zinc in the aluminum-zinc alloy is selected from the range between 90 wt% and 99 wt% and preferably selected from the range between 93 wt% and 97 wt%.
4. Thermal energy storage medium according to claim 3, wherein the percentage by weight of aluminum is about 5 wt% and the percentage of weight of zinc is about 95 wt%.
5. Thermal energy storage medium according to claim 4, wherein the percentage by weight of aluminum is 4.94 wt% and the percentage of weight of zinc is 95.06 wt%.
6. Use of the thermal storage medium according to one of the previous claims in a solar power plant for converting solar energy into electrical energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2011/054813 WO2012130286A1 (en) | 2011-03-29 | 2011-03-29 | Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2011/054813 WO2012130286A1 (en) | 2011-03-29 | 2011-03-29 | Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012130286A1 true WO2012130286A1 (en) | 2012-10-04 |
Family
ID=44625729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/054813 Ceased WO2012130286A1 (en) | 2011-03-29 | 2011-03-29 | Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2012130286A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021039599A1 (en) * | 2019-08-23 | 2021-03-04 | Ｊｘ金属株式会社 | Microcapsule for latent heat storage materials, method for producing same, powder containing microcapsules for latent heat storage materials, and heat storage device comprising said powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977197A (en) * | 1975-08-07 | 1976-08-31 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Thermal energy storage system |
| US6828990B2 (en) | 2000-12-28 | 2004-12-07 | Xerox Corporation | System for processing tabbed pages in the document |
| CN101818292A (en) * | 2010-03-18 | 2010-09-01 | 武汉理工大学 | Al-Cu-Mg-Zn high-temperature phase-change heat storage material |
| DE102009007176A1 (en) * | 2009-02-03 | 2010-10-14 | Karlsruher Institut für Technologie | Process and apparatus for isothermal pyrolysis with autothermal partial gasification |
-
2011
- 2011-03-29 WO PCT/EP2011/054813 patent/WO2012130286A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977197A (en) * | 1975-08-07 | 1976-08-31 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Thermal energy storage system |
| US6828990B2 (en) | 2000-12-28 | 2004-12-07 | Xerox Corporation | System for processing tabbed pages in the document |
| DE102009007176A1 (en) * | 2009-02-03 | 2010-10-14 | Karlsruher Institut für Technologie | Process and apparatus for isothermal pyrolysis with autothermal partial gasification |
| CN101818292A (en) * | 2010-03-18 | 2010-09-01 | 武汉理工大学 | Al-Cu-Mg-Zn high-temperature phase-change heat storage material |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE WPI Week 201064, Derwent World Patents Index; AN 2010-M02639, XP002667477 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021039599A1 (en) * | 2019-08-23 | 2021-03-04 | Ｊｘ金属株式会社 | Microcapsule for latent heat storage materials, method for producing same, powder containing microcapsules for latent heat storage materials, and heat storage device comprising said powder |
| JPWO2021039599A1 (en) * | 2019-08-23 | 2021-03-04 | ||
| EP4019605A4 (en) * | 2019-08-23 | 2023-09-06 | National University Corporation Hokkaido University | MICROCAPSULE FOR LATENT HEAT STORAGE MATERIALS, METHOD FOR PRODUCING SAME, POWDER CONTAINING MICROCAPSULES FOR LATENT HEAT STORAGE MATERIALS, AND HEAT STORAGE DEVICE COMPRISING SAID POWDER |
| JP7471663B2 (en) | 2019-08-23 | 2024-04-22 | 国立大学法人北海道大学 | Microcapsules for latent heat storage material and manufacturing method thereof, powder containing microcapsules for latent heat storage material, and heat storage device containing said powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Review on storage materials and thermal performance enhancement techniques for high temperature phase change thermal storage systems | |
| WO2012130285A1 (en) | Thermal energy storage medium with carbonate salts and use of the thermal energy storage medium | |
| EP2118010B1 (en) | Multinary salt system for storing and transferring thermal energy | |
| US20100258760A1 (en) | Thermal storage device and use of multicomponent systems | |
| Delise et al. | Technical and economic analysis of a CSP plant presenting a low freezing ternary mixture as storage and transfer fluid | |
| JP2011524966A5 (en) | ||
| WO2009041396A1 (en) | Aqueous solution for clathrate hydrate formation, heat-storage agent, process for producing clathrate hydrate or slurry thereof, method of storing/radiating heat, and process for preparing aqueous solution for forming latent-heat-storage agent or major component thereof | |
| Lebedev et al. | Limitations of using phase change materials for thermal energy storage | |
| US10359237B2 (en) | Heat source material composition, and auxiliary heat source and heat supply method using the same | |
| Wang et al. | Microstructures and thermal properties of Sn–Bi–Pb–Zn alloys as heat storage and transfer materials | |
| WO2012130286A1 (en) | Thermal energy storage medium with aluminum-zinc alloy and use of the thermal energy storage medium | |
| JP7459442B2 (en) | Solid phase transition material (PCM) | |
| Qiu et al. | Microstructure and properties of Mg–Ca–Zn alloy for thermal energy storage | |
| Nieto-Maestre et al. | Novel metallic alloys as phase change materials for heat storage in direct steam generation applications | |
| Tiwari et al. | SWOT analyses of high-temperature phase change materials for thermal energy storage | |
| JP2015067670A (en) | Molten salt, heat storage material, and heat medium | |
| WO2020070708A1 (en) | Inert mixture and use thereof as a phase change material | |
| WO2012130284A1 (en) | Thermal energy storage medium with chloride salts and use of the thermal energy storage medium | |
| CN203432430U (en) | Phase-change energy storing device | |
| CN109266932A (en) | A kind of 500-600 degree resistance to oxidation high energy storage density magnesium alloy and technique | |
| Song et al. | Faceting behavior of primary Ag in Bi-Ag Alloys for high temperature soldering applications | |
| WO2014068628A1 (en) | Heat storage system and power generation system | |
| CN102277137A (en) | Calcium-chloride-based room-temperature phase-change energy storage medium | |
| JP6682712B1 (en) | Latent heat storage material composition | |
| JP2020196818A (en) | Heat storage material composition and heat storage system for air conditioning of architecture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11712810 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 11712810 Country of ref document: EP Kind code of ref document: A1 |