Phase change heat storage material and preparation method thereof

A phase change heat storage and main material technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of easy supercooling and phase separation, low latent heat of phase change, low material density, etc., and achieve the preparation method Simple, stable exothermic process, stable performance effect

Active Publication Date: 2010-03-17
SHANGHAI MARITIME UNIVERSITY
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of organic phase change heat storage materials is relatively stable, and there is almost no problem of supercooling and phase separation, but its disadvantages are also very obvious, that is, the latent heat of phase change is low, and the material density is small, resulting in the unit of organic phase change heat storage materials. The volume heat storage is small, especially compared to the high-temperature water heat storage technology that is currently being developed, the advantages of organic phase change heat storage materials in terms of heat storage per unit volume are no longer obvious
Inorganic phase change heat storage materials have high heat storage per unit volume and good thermal conductivity, but their disadvantages are that they are prone to supercooling and phase separation. If the problems of supercooling and phase separation can be solved by additives, then inorganic phase change heat storage materials It has very obvious advantages, and heat storage related industries can also be developed accordingly
[0004] At present, relevant researchers at home and abroad have done some work in this area and developed some phase change heat storage materials, some of which have been put into actual production and application, but there are still many problems: such as the developed phase change heat storage materials phase change The temperature is not suitable, resulting in too narrow use; the performance is unstable, especially the phase separation phenomenon occurs after a period of use
At present, the inorganic phase change materials in this temperature range are relatively vacant.

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
  • Phase change heat storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this embodiment, the content of main ingredient barium hydroxide (Ba(OH)2.8H2O) is 94.5%, and the content of additive barium chloride is 5.5%. The chemical components used in this embodiment need to be sealed and kept in storage, especially when barium hydroxide is exposed to the air at normal temperature, it is easy to chemically react with carbon dioxide, which affects the performance. The materials used in the present invention can be packed in packages that can meet the sealing requirements when they leave the factory, so it is only necessary to pay attention not to damage the outer package during transportation.

[0025] When making, according to the ingredients, such as figure 1 As shown, put the main material barium hydroxide (Ba(OH)2 8H2O) in the equipment at 85℃~90℃ to heat and melt, then add the additive barium chloride after it is completely melted, and stir evenly, and then The mixture is reheated to make it evenly mixed into a fluid state, and finally p...

Embodiment 2

[0031] In this embodiment, the content of main ingredient barium hydroxide (Ba(OH)2.8H2O) is 93.5%, and the content of additive barium chloride is 6.5%. The chemical components used in this embodiment need to be sealed and kept in storage, especially when barium hydroxide is exposed to the air at normal temperature, it is easy to chemically react with carbon dioxide, which affects the performance. The materials used in the present invention can be packed in packages that can meet the sealing requirements when they leave the factory, so it is only necessary to pay attention not to damage the outer package during transportation.

[0032] When making, according to the ingredients, such as figure 1 As shown, put the main material barium hydroxide (Ba(OH)2 8H2O) in the equipment at 85℃~90℃ to heat and melt, then add the additive barium chloride after it is completely melted, and stir evenly, and then The mixture is reheated to make it evenly mixed into a fluid state, and finally p...

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
phase transition enthalpyaaaaaaaaaa
phase transition temperatureaaaaaaaaaa
phase transition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a phase change heat storage material, which consists of a main material barium hydroxide and an additive barium chloride, wherein the main material and the additive play a role in preventing overcooling and preventing phase separation. A preparation method of the material comprises the following steps: (1) heating and melting pure barium hydroxide; (2) adding the additive barium chloride, and fully mixing the mixture evenly into a fluid substance; and (3) filling the mixture into a container to perform packaging. The phase change heat storage material has the advantages of large phase change latent heat, stable heat release process, fewer additive types, simple preparation method and convenient production; besides, the phase change heat storage material is easy forpackaging after being melted into the state of an even fluid substance.

Description

Technical field: [0001] The invention relates to a novel material and a preparation method thereof, in particular to a phase change thermal storage material and a preparation method thereof. Background technique: [0002] Heat storage can solve the waste caused by the mismatch between heat energy supply and demand in terms of time and space. Heat storage technology has been widely used in air conditioning, heating and other fields. With the deepening of research, heat storage materials have gradually entered ecological buildings, etc. Emerging fields. Since the phase change heat storage material uses both the inherent heat capacity of the substance and the phase change heat of the state change to store heat energy, it has a large heat storage density. In recent years, research and application in this area have developed rapidly. [0003] The current research on phase change heat storage materials is mainly divided into two directions: organic phase change heat storage mater...

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): C09K5/06
Inventor 章学来于树轩王文国杨鹏程施敏敏
Owner SHANGHAI MARITIME UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap