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Method for reducing melting point of inorganic nano phase change energy storage material

A phase change energy storage material and inorganic nanotechnology, applied in the field of low-carbon energy saving in buildings, can solve the problems of supercooling and phase separation of phase change energy storage materials, and achieve the effects of low cost, simple process, stable quality and easy control.

Inactive Publication Date: 2013-12-25
贵州中益能新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the above problems, the inventors proposed various schemes, such as "A Heat Storage Medium and Its Application", application number 200610104583.8, which proposed a salt water compound composed of magnesium nitrate, magnesium chloride and water to form a eutectic; "An Inorganic Phase Change Energy Storage "Material", application number 201210037753.0, by adding nucleating agent and dispersant to inorganic salt hydrate; Anti-supercooling agent sodium tetraborate, although these methods have some effects, they are only limited to certain systems, and there are certain limitations in the selection and use of phase change energy storage materials. The inventors of the present invention have found that the inorganic salt hydrate Phase-change energy storage materials are dispersed into nano-scale particles and wrapped into nano-microcapsules, which can well solve the problems of supercooling and phase separation of phase-change energy storage materials. The inventors developed a series of nano-inorganic phases based on this discovery and idea Variable energy storage materials, the present invention is exactly one of this inorganic phase change energy storage materials developed

Method used

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  • Method for reducing melting point of inorganic nano phase change energy storage material
  • Method for reducing melting point of inorganic nano phase change energy storage material

Examples

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Effect test

Embodiment 1

[0016] (1) Weigh 1.4g of sodium chloride NaCl, sodium sulfate NaCl 10 2 SO 4 10H 2 O 398.6g, a total of 400g, add 1000ml of water, just completely dissolve the sodium chloride and sodium sulfate 10H2O, if there is any insoluble matter, heat slightly, but not more than 30°C, to dissolve completely, add twice the volume of Absolute ethanol, stirring while adding, produces nano-sized NaCl and Na 2 SO 4 10H 2 O core material;

[0017] (2) Weigh 322g of tetraethyl orthosilicate, 278g of manganese nitrate, a total of 600g as the wall material source, the weight ratio of wall material to core material is 6:4, and the ratio of ethyl orthosilicate to manganese nitrate is 1:1;

[0018] (3) Add ethyl orthosilicate and manganese nitrate in step (2) to step (1), and stir while adding, so that ethyl orthosilicate and manganese nitrate are hydrolyzed;

[0019] (4) Stir the mixture in step (3) at a speed of 600-1000r / min for 2 hours, so that the hydrolyzed nano-wall material silica gel ...

Embodiment 2

[0022] (1) Weigh 14g of sodium chloride NaCl, 10 water of sodium sulfate Na 2 SO 4 10H 2 O 386g, 400g in total, add water 1000ml, make sodium chloride and sodium sulfate decahydrate just completely dissolve, if there are insoluble matter, supplement water appropriately, make dissolving completely, add the dehydrated alcohol of double volume under constant stirring, add while adding While stirring, nano-scale NaCl and Na 2 SO 4 10H 2 O core material;

[0023] (2) Weigh 322g of tetraethyl orthosilicate, 278g of manganese nitrate, a total of 600g as the wall material source, the weight ratio of wall material to core material is 6:4, and the ratio of ethyl orthosilicate to manganese nitrate is 1:1;

[0024] (3) Add ethyl orthosilicate and manganese nitrate in step (2) to step (1), and stir while adding, so that ethyl orthosilicate and manganese nitrate are hydrolyzed;

[0025] (4) Stir the mixture in step (3) at a speed of 600-1000r / min for 2 hours, so that the hydrolyzed na...

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Abstract

The invention relate to a method for reducing a melting point of an inorganic nano phase change energy storage material and belongs to the technical field of low carbon and energy conservation of construction. The inorganic nano phase change energy storage material is formed by enveloping an inorganic nano phase change energy storage material part and inorganic metal salt for reducing the inorganic nano phase change energy storage material part as a core material with inorganic nano rubber powder as a wall material. The method can change a phase change temperature of the inorganic phase change energy storage material, and provides a direction for reducing the phase change temperature of the inorganic phase change energy storage material.

Description

technical field [0001] The invention belongs to the technical field of low-carbon and energy-saving buildings, and specifically relates to a method for lowering the melting point of an inorganic nano-phase change energy storage material. Background technique [0002] A large amount of heat is generated in the natural environment every day, such as: solar energy, animal body radiation heat, combustion heat, friction heat, object running heat, etc. Phase change energy storage materials are substances that absorb the heat during the phase change process, and release it to the environment when needed, so as to achieve the purpose of controlling the ambient temperature and saving energy. According to its chemical composition, it can be divided into: organic phase change energy storage materials, hybrid phase change energy storage materials and inorganic phase change energy storage materials. Organic phase change energy storage materials have the advantages of good chemical stabi...

Claims

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Application Information

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IPC IPC(8): C09K5/06B82Y30/00B82Y40/00
Inventor 李荣明骆相全
Owner 贵州中益能新材料科技有限公司
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