Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Inorganic nano phase-change energy storage material prepared by double-decomposition reaction and preparation method thereof

A phase change energy storage material and metathesis reaction technology, 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, easy quality control and simple process

Inactive Publication Date: 2014-01-01
贵州中益能低碳节能科技有限公司
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the above problems, various inventors have proposed various schemes, such as "A Heat Storage Medium and Its Application", application number 200610104583.8, which proposes a salt water compound composed of magnesium nitrate, magnesium chloride and water to form a eutectic; "An Inorganic Phase Change Storage Medium" Energy Materials", application number 201210037753.0, using nucleating agent and dispersant in inorganic salt hydrate; "A preparation method of inorganic hydrate salt phase change energy storage material", application number 200810065301.7, using Add 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 hydration Phase-change energy storage materials are dispersed into nano-sized particles and wrapped into nano-microcapsules, which can well solve the problems of supercooling and phase separation of phase-change energy storage materials. Based on this discovery and idea, the inventor has developed a series of nano-inorganic Phase change energy storage material, the present invention is exactly one of this inorganic phase change energy storage material developed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inorganic nano phase-change energy storage material prepared by double-decomposition reaction and preparation method thereof
  • Inorganic nano phase-change energy storage material prepared by double-decomposition reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Weigh industrial grade aluminum sulfate Al 2 (SO 4 ) 3 376.2g, add 1000g of water to dissolve, drop 0.1M dilute sulfuric acid to make the Al(OH)3 floc just dissolve, filter to remove impurities;

[0024] (2) Weigh 328g of trisodium phosphate and add it to the aqueous solution of step (1). The ratio of trisodium phosphate to aluminum sulfate is 2:1.1, and stir while adding to obtain nano-sized aluminum phosphate AlPO 4 Precipitate 244g, filter, and the filtrate is concentrated to sodium sulfate saturation;

[0025] (3) Add the filtrate of step (2) into twice the volume of ethanol to obtain nano-scale sodium sulfate Na 2 SO 4 .10H 2 O 966g and nanoscale aluminum sulfate Al 2 (SO 4 ) 3 .18H 2 O 66.6g, filtered;

[0026] (4) Incorporate step (2) nano-AlPO 4 244g and step (3) nanoscale sodium sulfate Na 2 SO 4 .10H 2O 966g and nanoscale aluminum sulfate Al 2 (SO 4 ) 3 .18H 2 O 66.6g was mixed, added 1.3 kg of water and stirred, heated at 40°C for 60 m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heat storage densityaaaaaaaaaa
densityaaaaaaaaaa
phase transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to an inorganic nano phase-change energy storage material prepared by double-decomposition reaction, belonging to the technical field of architectural low-carbon energy saving. The energy storage material is prepared from aluminum sulfate O and trisodium phosphate (Na3PO4) in a mol ratio of 1.1:2. The X-ray diffraction analysis indicates that the product is composed of the following components in percentage by mol: 39.2% of nano aluminum phosphate AlPO4, 58.8% of sodium sulfate Na2SO4.10H2O and 2% of aluminum sulfate Al2(SO4)3.18H2O. The size of the product is 40-60nm, the phase-change temperature by DSC (differential scanning calorimetry) thermal analysis is 26 DEG C, the melting-solidification curve proves to have no problems of supercooling and phase separation, the heat storage density is 320J / g, and the density is 1.8 g / cm<3>. The product has the advantages of simple technique, repeated use and no phase separation; the inorganic salt hydrate is quickly dispersed into nano particles through the rapid reaction and wrapped by the aluminum phosphate, so that the inorganic salt crystalline water can not be easily lost, and the molecular motion of the particles is restricted, thereby effectively controlling the phenomena of supercooling and phase separation; and thus, the invention provides a favorable 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 an inorganic nano-phase-change energy storage material prepared by metathesis reaction 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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06E04B1/76B82Y40/00
Inventor 李荣明骆相全
Owner 贵州中益能低碳节能科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products