CN109777365B - Liquid metal composite phase change energy storage material and preparation method and application thereof - Google Patents
Liquid metal composite phase change energy storage material and preparation method and application thereof Download PDFInfo
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- CN109777365B CN109777365B CN201910087996.7A CN201910087996A CN109777365B CN 109777365 B CN109777365 B CN 109777365B CN 201910087996 A CN201910087996 A CN 201910087996A CN 109777365 B CN109777365 B CN 109777365B
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Abstract
The invention relates to a liquid metal composite phase change material energy storage material and a preparation method and application thereof. The liquid metal composite phase change material energy storage material is prepared by mixing liquid metal and molten salt in a mass ratio of 1: (1-2) compounding. The liquid metal composite phase change heat storage material prepared by the invention has the characteristics of high heat conductivity, good stability, simple manufacture and the like; and the preparation process is simple and easy to operate. The prepared liquid metal composite phase change energy storage material has the thermal conductivity of 13-25W/(m DEG C), the phase change potential heat value can reach 208-279kJ/L, and the material can be widely applied to various fields of storage and transportation of perishable food, solar energy storage, chemical industry and the like, and meets different heat transfer, heat storage and energy storage requirements.
Description
Technical Field
The invention relates to the fields of molten salt and liquid metal, in particular to a liquid metal composite phase change energy storage material and a preparation method and application thereof.
Background
Any substance is melted or crystallized along with the change of heat, the change of heat when the substance is melted or crystallized is fully utilized, and a large amount of energy can be saved. However, in the fields of solar thermal power generation, nuclear power, heat storage and transfer, refrigeration and transportation of food, chemical engineering, drying and the like, the requirements for heat transfer and storage materials are different. For example, the transportation and storage of perishable foods need to be in a low-temperature environment, but the refrigeration transportation link of foods is basically realized by refrigerating through a vehicle-mounted compressor at present, fuel oil is used as an energy source, not only is the transportation cost increased, but also the pressure of environmental protection is increased; in short-distance transportation, the ice-water mixture is mainly used as a cold source, and basically, only a transportation environment at 0-10 ℃ can be provided, so that the transportation and preservation requirements of most perishable foods cannot be met. In addition, in the fields of solar thermal power generation, nuclear power, chemical industry and the like, heat transfer, heat storage and energy storage materials with medium and high temperature are generally required.
Disclosure of Invention
In order to solve the technical problems, the invention provides a liquid metal composite phase change energy storage material and a preparation method and application thereof. The obtained composite phase-change energy storage material has the characteristics of high thermal conductivity, stable phase-change temperature, good chemical stability, wide application range and the like, and the preparation method is simple, can be widely applied to the fields of storage and transportation of perishable food, solar heat transfer and storage, chemical industry and the like, and meets different heat transfer, heat storage and energy storage requirements.
The technical scheme of the invention is as follows:
a liquid metal composite phase change material energy storage material is prepared by mixing liquid metal and molten salt in a mass ratio of 1: (1-2) compounding.
Further, the liquid metal is selected from one or more of gallium indium, gallium tin, gallium zinc and bismuth indium binary alloy; or one or more selected from gallium indium tin, gallium indium zinc, indium tin zinc, bismuth indium tin and bismuth indium zinc ternary alloy; or selected from gallium indium tin zinc and/or bismuth indium tin zinc quaternary alloy; more preferably GaInSn10、BiInSn18、KNa22One or more of them.
Further, the molten salt is selected from one or more of chloride, carbonate, sulfate, nitrate, etc., preferably KNO3、NaNO3、Ca(NO3)2Preparing molten salt according to the mass ratio of (5-9) to (40-50) to (45-51); or, KCl, NaNO3、MgSO4Molten salt is prepared by the mass ratio of (30-35) to (15-20) to (45-60); or, NaCl, NaNO3、Na2CO3Preparing molten salt according to the mass ratio of (35-45) to (10-15) to (40-55); or, NH4Cl、K2SO4、(NH4)2S2O8、(NH4)2SO4A eutectic mixture composed of 50-55:22-25:12-15:16-20 by mass; or, Ca (NO)3)2、KNO3、NaNO3、NaNO2A eutectic mixture which consists of the components with the mass ratio of 45-47:40-42:10-12: 5-7; alternatively, MgCl2、ZnCl2A eutectic mixture consisting of 1 and 2.3-3 mass ratios.
As one of the preferable embodiments of the invention, the liquid metal composite phase change material energy storage material is prepared from the following components in parts by weight: liquid metal GaInSn1050 to 55 portions of molten50-110 parts of salt; wherein the molten salt is MgCl2、ZnCl2A eutectic mixture consisting of 1 and 2.3-3 mass ratios.
As one of the preferable embodiments of the invention, the liquid metal composite phase change material energy storage material is prepared from the following components in parts by weight: liquid metal BiInSn1830-35 parts of molten salt and 30-70 parts of molten salt; wherein the molten salt is Ca (NO)3)2、KNO3、NaNO3、NaNO2The eutectic mixture consists of the components according to the mass ratio of 45-47:40-42:10-12: 5-7.
As one of the preferable embodiments of the invention, the liquid metal composite phase change material energy storage material is prepared from the following components in parts by weight: liquid metal KNa2224-25 parts of molten salt and 24-50 parts of molten salt; wherein the molten salt is NH4Cl、K2SO4、(NH4)2S2O8、(NH4)2SO4The eutectic mixture consists of the components according to the mass ratio of 50-55:22-25:12-15: 16-20.
The invention also provides a preparation method of the liquid metal composite phase change energy storage material, which comprises the following steps: and mixing the liquid metal in the liquid state with the molten salt, and stirring to be uniformly mixed to obtain the alloy.
The stirring may be mechanical stirring or magnetic stirring. The stirring speed is 2000-2500 r/min.
The invention also provides application of the liquid metal composite phase change heat storage material in the fields of storage and transportation of perishable food, solar heat transfer and storage, chemical engineering and the like.
The technical effects obtained by the invention are as follows:
the liquid metal composite phase change heat storage material prepared by the invention has the characteristics of high heat conductivity, good stability, simple manufacture and the like; and the preparation process is simple and easy to operate. The prepared liquid metal composite phase change energy storage material has the thermal conductivity of 13-25W/(m DEG C), the phase change potential heat value can reach 208-279kJ/L, and the material can be widely applied to various fields of storage and transportation of perishable food, solar energy storage, chemical industry and the like, and meets different heat transfer, heat storage and energy storage requirements.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Embodiment 1A liquid metal composite phase change energy storage material
Accurately weigh 50.00g of liquid metal (GaInSn)10) The mixture was placed in a 250mL beaker, and 70.00g of molten salt (MgCl) was added thereto2、ZnCl2Eutectic mixture with the mass ratio of 2.5: 1) is stirred under the condition of 2000-2500 r/min until the molten salt and the liquid metal are completely mixed.
After standing for 24h at normal temperature, no delamination was observed.
The thermal conductivity is tested to be 13.27W/(m.DEG C), and the phase-change latent heat value can reach 240 kJ/L.
Embodiment 2A liquid metal composite phase change energy storage material
30.00g of liquid metal (BiPbSn) was accurately weighed18) Placing in a 100.0mL beaker, heating to 110 deg.C and holding at a constant temperature, and adding 50.00g molten salt (Ca (NO)3)2、KNO3、NaNO3、NaNO2A eutectic mixture composed of the components according to the mass ratio of 45:40:10: 5) is stirred under the condition of 2000-2500 r/min until the molten salt and the liquid metal are completely mixed.
After standing for 24h at normal temperature, no delamination was observed.
The thermal conductivity is tested to be 24.46W/(m.DEG C), and the phase-change latent heat value can reach 208 kJ/kg.
Embodiment 3A liquid metal composite phase change energy storage material
Accurately weigh 24.00g of liquid metal (KNa)22) Placing in a 100mL beaker, controlling the temperature of the beaker at 40 ℃, and adding 48.00g of molten salt (NH)4Cl、K2SO4、(NH4)2S2O8、(NH4)2SO4A eutectic mixture composed of 50:22:12:16 in mass ratio) is stirred at 2000-2500 r/min until the molten salt and the liquid metal are completely mixed.
After standing for 24h at normal temperature, no delamination was observed.
The thermal conductivity is 19.39W/(m DEG C), and the phase change latent heat value can reach 279 kJ/L.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. The liquid metal composite phase change material energy storage material is characterized by being prepared from the following components in parts by weight: liquid metal GaInSn1050-55 parts of molten salt and 50-110 parts of molten salt; wherein the molten salt is MgCl2、ZnCl2A eutectic mixture consisting of 1 and 2.3-3 in mass ratio;
or the liquid metal composite phase change material energy storage material is prepared from the following components in parts by weight: liquid metal BiInSn1830-35 parts of molten salt and 30-70 parts of molten salt; wherein the molten salt is Ca (NO)3)2、KNO3、NaNO3、NaNO2A eutectic mixture which consists of the components with the mass ratio of 45-47:40-42:10-12: 5-7;
or the liquid metal composite phase change material energy storage material is prepared from the following components in parts by weight: liquid metal KNa2224-25 parts of molten salt and 24-50 parts of molten salt; wherein the molten salt is NH4Cl、K2SO4、(NH4)2S2O8、(NH4)2SO4The eutectic mixture consists of the components according to the mass ratio of 50-55:22-25:12-15: 16-20.
2. A method for preparing the liquid metal composite phase change energy storage material as claimed in claim 1, which comprises: mixing the liquid metal and the molten salt, and stirring to uniformly mix to obtain the alloy;
the stirring is mechanical stirring or magnetic stirring, and the stirring speed is 2000-2500 r/min.
3. The liquid metal composite phase change heat storage material of claim 1, for use in the storage and transportation of perishable food, solar heat transfer and storage, and chemical engineering fields.
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| BR112020026105A2 (en) | 2018-06-20 | 2021-03-16 | David Alan McBay | METHOD, SYSTEM AND APPARATUS TO EXTRACT THERMAL ENERGY FROM THE GEOTHERMAL SALINE FLUID |
| CN111534282A (en) * | 2019-12-16 | 2020-08-14 | 有研工程技术研究院有限公司 | Phase-change heat storage material with low melting point and high volume latent heat, and preparation method and application thereof |
| CN114250384B (en) * | 2020-09-24 | 2022-12-23 | 北京态金科技有限公司 | Liquid metal thermal interface material |
| CN115491180A (en) * | 2021-06-17 | 2022-12-20 | 中国科学院理化技术研究所 | Composite phase change coolant and preparation method thereof |
| CN113889675B (en) * | 2021-09-23 | 2023-08-29 | 湖北高碳光电科技有限公司 | Spacer layer material, all-liquid alloy energy storage device and preparation method thereof |
| CN117802349A (en) * | 2024-03-01 | 2024-04-02 | 成都先进金属材料产业技术研究院股份有限公司 | Liquid metal thermal interface material and preparation method and application thereof |
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| CN1141355C (en) * | 2002-06-17 | 2004-03-10 | 昆明理工大学 | Process for preparing metal-base composite fused salt as heat accumulating material |
| CN1504716A (en) * | 2002-12-02 | 2004-06-16 | 广东工业大学 | Metal and molten salt energy storage type heat supply apparatus |
| CN103923618B (en) * | 2013-02-01 | 2019-01-11 | 深圳市爱能森科技有限公司 | Quartz sand composite multi-component nitric acid Molten Salt Heat Transfer heat storage medium and preparation method |
| CN104140786B (en) * | 2013-05-09 | 2017-04-19 | 中国科学院理化技术研究所 | Composite phase-change thermal storage material |
| CN103409649B (en) * | 2013-06-05 | 2015-02-25 | 哈尔滨工程大学 | Method and device for reducing, extracting and separating rear earth through fused salt and liquid metal |
| CN104804712B (en) * | 2015-03-25 | 2018-01-19 | 中山大学 | The metal chloride fused salt material and preparation method of a kind of high heat conduction and application |
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| CN206016995U (en) * | 2016-08-18 | 2017-03-15 | 云南科威液态金属谷研发有限公司 | Stirling thermal engine operating cooler using liquid metal heat radiation |
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Effective date of registration: 20230109 Address after: 655413 Shijing Road, Hongqiao Light Industry Park, Hongqiao Street, Xuanwei City, Qujing City, Yunnan Province Patentee after: YUNNAN KEWEI LIQUID METAL VALLEY R&D Co.,Ltd. Patentee after: YUNNAN ZHONGXUAN LIQUID METAL TECHNOLOGY CO.,LTD. Address before: 655400 Shijing Road, Hongqiao light industrial park, Hongqiao street, Xuanwei City, Qujing City, Yunnan Province Patentee before: YUNNAN KEWEI LIQUID METAL VALLEY R&D Co.,Ltd. |