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High-temperature inorganic nano phase-change energy storage cement paste and preparation method thereof

An inorganic nano, phase-change energy storage technology, applied in chemical instruments and methods, microsphere preparation, microcapsule preparation, etc., can solve the problems of phase separation, overcooling of phase-change energy storage materials, etc., and achieve low cost and easy quality The effect of simple control and process

Inactive Publication Date: 2014-01-01
贵州中益能低碳节能科技有限公司
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Weigh seven cobalt sulfate CoSO 4 ·7H 2 O 10kg, add water 17kg, heat 60-70 ℃, make heptahydrate cobalt sulfate CoSO 4 ·7H 2 O is completely dissolved, and 34kg of absolute ethanol is added to precipitate nanometer 7-water cobalt sulfate CoSO 4 ·7H 2 O, centrifuged to get nanometer 7 water cobalt sulfate CoSO 4 ·7H 2 O material, ethanol is recovered from the centrifuge;

[0023] (2) Weigh 18kg of aluminum dihydrogen phosphate according to the proportion, add 3.6kg of water to dilute, add step (1) add nano-scale 7-water cobalt sulfate CoSO 4 ·7H 2 O, mix thoroughly;

[0024] (3) Add 5kg10%W / W polyvinyl alcohol water solution to step (2) and mix well;

[0025] (4) Add the remaining 1.4kg of water to step (3) and stir well;

[0026] (5) Add 10kg of No.500 cement to step (4), and stir well.

Embodiment 2

[0028] (1) Weigh seven cobalt sulfate CoSO 4 ·7H 2 O 10kg, add water 17kg, heat 60-70 ℃, make heptahydrate cobalt sulfate CoSO 4 ·7H 2 O is completely dissolved, and 34k absolute ethanol is added to precipitate nanometer 7-water cobalt sulfate CoSO 4 ·7H 2 O, centrifuged to get nanometer 7 water cobalt sulfate CoSO 4 ·7H 2 O material, ethanol is recovered from the centrifuge;

[0029] (2) Weigh 20kg of aluminum dihydrogen phosphate according to the proportion, add 4kg of water to dilute, add step (1) add nano-scale 7-water cobalt sulfate CoSO 4 ·7H 2 O, mix thoroughly;

[0030] (3) Add 5kg10%W / W polyvinyl alcohol water solution to step (2) and mix well;

[0031] (4) Add the remaining 6kg of water to step (3) and stir well;

[0032] (5) Add 12kg of No.500 cement to step (4), and stir well.

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Abstract

The invention relates to a high-temperature inorganic nano phase-change energy storage cement paste and a preparation method thereof, belonging to the technical field of architectural low-carbon energy saving. The preparation method comprises the following steps: by using aluminium dihydrogen phosphate as a wall material and nano cobaltous sulfate heptahydrate CoSO4.7H2O as a core material, coating the wall material on the core material, and blending with cement and water to obtain the cement paste. The cement paste is used for energy storage and thermal insulation of drying chamber cement walls and floor.

Description

technical field [0001] The invention belongs to the technical field of low-carbon and energy-saving buildings, and specifically relates to a high-temperature phase-change nano-energy storage cement emulsion and a preparation method thereof. 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 st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/36C09K5/06B01J13/02
Inventor 李荣明骆相全
Owner 贵州中益能低碳节能科技有限公司
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