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A kind of phase change energy storage aggregate and preparation method thereof

A technology of phase change energy storage and phase change materials, which is applied in the field of phase change energy storage aggregate and its preparation, can solve the problems of occupying large land, endangering resources, waste, etc., and achieve a phase change energy storage with good effect and high strength Effect

Active Publication Date: 2017-01-04
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of waste aerated concrete cannot be processed and digested in time, it will occupy a large amount of land, which will cause pollution to the atmosphere and water bodies, and will cause great harm to society and the environment. At the same time, it will also cause a waste of resources

Method used

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  • A kind of phase change energy storage aggregate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put a sufficient amount of phase change material with a phase change temperature of 25.7°C (the weight ratio is liquid paraffin:paraffin wax=85:15, and the phase change enthalpy is 105.1J / g) into the container, and heat up to melt the phase change material; Add 10 parts of waste aerated concrete particles with a particle size of 2-7 mm, stir evenly, seal the container, and absorb for 2 hours under a vacuum of 0.06 MPa to make a phase change material core.

[0025] Sodium methyl siliconate emulsion, steel slag powder (the specific surface area is 417m 2 / kg), 32.5# ordinary Portland cement and water to make a mixed slurry according to the mass ratio of 2.7:5.5:1.2:2; building gypsum and manganese slag powder (specific surface area is 532m 2 / kg) to make mixed powder according to the mass ratio of 1.5:3.8. Immerse the core of the phase change material in the mixed slurry for 4 seconds, take it out and wrap a layer of the mixed powder on the outside; keep it for 28 days n...

Embodiment 2

[0027] Put a sufficient amount of phase change material with a phase change temperature of 29.3°C (liquid paraffin:stearic acid=78:22 by weight, phase change enthalpy is 135.2J / g) into the container, heat up to melt the phase change material Add 10 parts of waste aerated concrete particles with a particle size of 2-7 mm, stir evenly, seal the container, and absorb for 2 hours under a vacuum of 0.08 MPa to make a phase change material core.

[0028] White latex, steel slag powder (the specific surface area is 453m 2 / kg), 32.5# fly ash portland cement and water to make a mixed slurry according to the mass ratio of 2.2:5:1.5:2.2; building gypsum and manganese slag powder (specific surface area is 516m 2 / kg) to make mixed powder according to the mass ratio of 1.7:3.5. Immerse the core of the phase change material in the mixed slurry for 6 seconds, take it out, and then wrap a layer of the mixed powder on its outside; keep it for 28 days naturally to obtain the phase change ener...

Embodiment 3

[0030] Put a sufficient amount of phase change material with a phase change temperature of 35.2°C (liquid paraffin: butyl stearate = 75:25 by weight, phase change enthalpy is 143.2J / g) into the container, and raise the temperature to make the phase change The material is melted; 10 parts of waste aerated concrete particles with a particle size of 2-7 mm are added, stirred evenly, the container is sealed, and adsorbed for 2 hours under a vacuum of 0.07 MPa to make a phase change material core.

[0031] Sodium methyl siliconate emulsion, white latex, steel slag powder (the specific surface area is 485m 2 / kg), 32.5# slag salt cement and water to make a mixed slurry according to the mass ratio of 1:0.7:4.5:1.8:2.5; building gypsum and manganese slag powder (specific surface area is 464m 2 / kg) to make mixed powder according to the mass ratio of 2:3. Immerse the core of the phase change material in the mixed slurry for 8 seconds, take it out and wrap a layer of the mixed powder on...

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Abstract

The invention provides a method for preparing a phase change energy storage aggregate by using waste building autoclaved aerated concrete. The aggregate comprises the following components in parts by weight: 10 parts of waste aerated concrete particles, 7-10 parts of phase-change material, 1.7-2.7 parts of polymer emulsion, 4.5-5.5 parts of steel slag powder, 1.2-1.8 parts of cement, 2-2.5 parts of water, 1.5-2 parts of building plaster and 3-3.8 parts of manganese slag powder. The obtained phase change energy storage aggregate is high in strength and good in affinity with inorganic adhesive materials; the phase-change material is not easy to leak and durable in use; the phase change energy storage aggregate can be used for preparing mortar and concrete, and producing various building blocks or panels, and the like.

Description

technical field [0001] The invention relates to a method for preparing phase-change energy-storage aggregate by using waste autoclaved aerated concrete as the core support material. The obtained phase-change energy-storage aggregate is used to prepare mortar and concrete, and to produce various buildings Blocks or panels etc. . Background technique [0002] Phase change energy storage material is a kind of thermal functional material, which can store energy in the form of phase change potential, and realize the conversion of energy between different time periods. In recent years, problems such as the depletion of mineral energy and environmental pollution have become more and more prominent. Improving energy efficiency and developing renewable energy have become important issues facing mankind. Utilizing the latent heat of phase change materials (Phase ChangeMaterials (PCMs)) to store and utilize energy can help improve energy efficiency and develop renewable energy. It is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/16
CPCY02W30/91
Inventor 赵风清樊铁林陈蜜蜜张蒙蒙刘少杰刘洪杰李配欣曹素改
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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