Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite phase-change heat storage material for enhanced heat storage with nano-silicon carbide and preparation method thereof

A nano-silicon carbide and composite phase change technology, applied in heat exchange materials, chemical instruments and methods, energy storage, etc., can solve the problem of poor corrosion and thermal conductivity, low heat storage density of composite phase change heat storage materials, etc. problems, to avoid corrosion problems, improve heat transfer efficiency, and increase heat storage density

Active Publication Date: 2022-05-20
HUAZHONG UNIV OF SCI & TECH
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a composite phase change heat storage material with nano-silicon carbide enhanced heat storage. The purpose is to use nano-silicon The addition of skeleton material and heat conduction enhancement material graphite can effectively solve the problems of corrosion and poor thermal conductivity during material phase change, thus solving the technical problem of low heat storage density of composite phase change heat storage materials

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
  • Composite phase-change heat storage material for enhanced heat storage with nano-silicon carbide and preparation method thereof
  • Composite phase-change heat storage material for enhanced heat storage with nano-silicon carbide and preparation method thereof
  • Composite phase-change heat storage material for enhanced heat storage with nano-silicon carbide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A nano-silicon carbide reinforced heat storage composite phase change heat storage material, prepared by the following method:

[0029] (1) Mix 60g polycarbonate, 40g MgO, 10g heat-conducting material graphite and 1.11g nano-silicon carbide through a ball mill, the speed of the ball mill is 350r / min, in parts by weight, the ball-to-material ratio is 5.7:1, and the powder is obtained Mixture, wherein, polycarbonate is that potassium carbonate and lithium carbonate are mixed by mass ratio 1:1;

[0030] (2) Carry out tabletting operation and press the powder mixture into a molding green embryo with an electric tablet press, the molding pressure is 30Mpa, and the holding time is 3 minutes;

[0031] (3) The composite phase change heat storage material can be obtained by sintering the shaped green body. The sintering procedure is as follows: the heating rate is 5°C / min from 25°C to 100°C, the temperature is kept for 60 minutes, and then the temperature is increased at 5°C / min...

Embodiment 2

[0035] The difference from Example 1 is that the addition amount of nano-silicon carbide is 0.9%, and carbon fiber is used instead of graphite.

Embodiment 3

[0037] The difference from Example 1 is that the addition amount of nano-silicon carbide is 0.5%, and calcium oxide is used instead of magnesium oxide.

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
particle diameteraaaaaaaaaa
heat storage densityaaaaaaaaaa
heat storage densityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of heat storage materials, and in particular relates to a composite phase-change heat storage material and a preparation method of nano-silicon carbide enhanced heat storage. The composite phase-change heat storage material of the present invention includes, in parts by weight, 40-70 parts of polycarbonate, 30-60 parts of skeleton material, 5-20 parts of heat conduction enhancing material and 0.5-5 parts of nano-silicon carbide. The present invention uses multi-element carbonate, heat conduction strengthening material, and skeleton material to form the matrix material, and increases the heat storage density of the material by adding nano-silicon carbide, and the heat storage density of the strengthened composite phase change heat storage material exceeds 1100KJ / Kg, and Composite heat storage materials basically do not decompose at 750°C, have good thermal stability, can meet high temperature applications, and have broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of heat storage materials, and in particular relates to a composite phase-change heat storage material and a preparation method of nano-silicon carbide enhanced heat storage. Background technique [0002] Heat storage materials are one of the important means to improve energy utilization. Heat storage materials store excess heat in the system and release it when the system needs it, so as to achieve the purpose of improving the energy utilization of the system. As an important part of heat storage materials, phase change heat storage materials have been widely studied because of their wide temperature range, suitability for medium and high temperature heat storage, good stability and good economy. The application of heat storage materials needs to face many problems, such as corrosiveness of materials, insufficient thermal conductivity, and insufficient heat storage density. It is difficult for a single typ...

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 Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063Y02E70/30
Inventor 李显王禹贤胡振中朱燕陶余东刘显哲罗光前姚洪
Owner HUAZHONG UNIV OF SCI & TECH