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Volumetric integrated composite phase change heat storage material and preparation method thereof

A phase-change heat storage material and composite phase-change technology, applied in the field of volumetric photothermal integrated composite phase-change heat storage material and its preparation, can solve the problems of phase-change material corrosion, phase separation, poor particle stability, etc., and achieve Strong corrosion resistance, high stability, and simple preparation process

Inactive Publication Date: 2021-03-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light-to-heat conversion rate of the former is limited. Although the improvement effect of the latter meets the requirements, the added particles have poor stability and are easily corroded by phase change materials or phase separation. Ceramic materials have excellent corrosion resistance and high compatibility.

Method used

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  • Volumetric integrated composite phase change heat storage material and preparation method thereof
  • Volumetric integrated composite phase change heat storage material and preparation method thereof
  • Volumetric integrated composite phase change heat storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to figure 1 , Figure 4 , image 3 middle line a, Image 6 In line a, mix 10g of erythritol and 0g of nano-titanium nitride evenly, and then put it in an oven at 150°C for melting. After melting, transfer it to an oil bath at 130°C for mechanical stirring for 30 minutes. Vacuum degassing was carried out in a vacuum environment at 130° C. for 10 minutes. After degassing, it is poured into a mold, cooled and solidified, and then demoulded for surface grinding to obtain a volumetric photothermal integrated composite phase change heat storage material.

Embodiment 2

[0028] refer to image 3 middle b line, Image 6 In line b, mix 10g of erythritol with 0.001g of nano-titanium nitride evenly, then put it into an oven at 150°C for melting, transfer it to an oil bath at 130°C for mechanical stirring for 30 minutes after melting, and put it into the Place in a vacuum environment at 130°C for vacuum degassing for 10 minutes. After degassing, it is poured into a mold, cooled and solidified, and then demoulded for surface grinding to obtain a volumetric photothermal integrated composite phase change heat storage material.

Embodiment 3

[0030] refer to image 3 middle line c, Image 6 In line c, mix 10g of erythritol and 0.1g of nano-titanium nitride evenly, then put it in an oven at 150°C for melting, transfer it to an oil bath at 130°C for mechanical stirring for 30 minutes after melting, and put it into the Place in a vacuum environment at 130°C for vacuum degassing for 10 minutes. After degassing, it is poured into a mold, cooled and solidified, and then demoulded for surface grinding to obtain a volumetric photothermal integrated composite phase change heat storage material.

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Abstract

The invention belongs to the field of composite materials, and particularly relates to a volumetric photo-thermal integration method. The composite material comprises a phase-change heat storage material body and high-spectral-absorptivity ceramic filler, wherein the phase-change heat storage material body comprises one or a combination of at least two of organic sugar alcohols, lipids and hydrocarbons, and the high-spectral-absorptivity ceramic filler is nano titanium nitride. According to the invention, the composite phase-change heat storage material has extremely high solar full-spectrum absorption capacity, so that the composite phase-change heat storage material has a relatively high photo-thermal conversion rate, and the heat storage rate of the composite phase-change heat storage material in the field of solar energy utilization is greatly improved. The method is simple to operate and few in preparation process, and the product prepared by the method has a good prospect in thefield of solar photo-thermal utilization.

Description

technical field [0001] The invention belongs to the technical field of thermal energy storage, and mainly relates to a volumetric photothermal integrated composite phase change heat storage material and a preparation method thereof. Background technique [0002] my country has abundant solar energy resources. With the further consumption of fossil energy, how to efficiently utilize solar energy has become a hot topic. Phase change heat storage materials have been paid more and more attention due to their excellent characteristics of large latent heat of phase change, small temperature change during phase change, stability and recyclability. At present, most of the research on phase change heat storage materials focuses on the improvement of thermal conductivity, and the scenarios are only limited to the storage of direct heat sources, and do not involve the improvement of the conversion rate of the photothermal process. However, in addition to the disadvantage of low therma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 刘向雷鲍创宋亚楠宣益民
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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