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Novel phase-change heat-storage material and preparation method thereof

A phase change heat storage material, a new technology, applied in the field of new phase change heat storage materials, can solve the problems of poor thermal conductivity, waste of solar energy, leakage, etc., and achieve the effect of preventing leakage

Inactive Publication Date: 2014-11-26
ZHENJIANG XINMENGXI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a cheap and clean energy source, solar energy has been widely used in production and life. Matching and coordination, resulting in a lot of energy waste
For example, solar energy is excessive during the day, causing solar energy to be wasted in vain, and solar energy is not enough at night and in rainy days
The current heat storage materials generally have the disadvantage of poor thermal conductivity, so the phase change heat storage components made of them cannot fully exert the heat storage function of the heat storage material due to their poor thermal conductivity.
Secondly, when the heat storage material undergoes a solid-liquid phase transition, it will cause leakage problems

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] Below with example, the embodiment of the present invention is described further:

[0019] Place the strip-shaped activated carbon as the cathode in the copper electroplating solution and conduct electroplating. After the completion, the activated carbon is crushed to obtain the activated carbon-copper powder mixture; the expandable graphite and activated carbon-copper powder mixture are divided into two containers, and placed in a vacuum oven at 60°C Dry in medium for 10 hours; put the dried expandable graphite powder in a stainless steel container, heat to 800°C and expand for 60 seconds to obtain expanded graphite; take 60g of paraffin wax with a melting point of 60°C, 20g of activated carbon-copper powder mixture and 20g of expanded graphite Mix, heat to 80°C for blending, and absorb under stirring for about 1 hour to make a phase change heat storage material. The phase transition temperature of this material is 60° C., and the latent heat of phase transition is 116...

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PUM

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Abstract

The invention discloses a novel phase-change heat-storage material and a preparation method thereof, the phase-change heat-storage material is composed of paraffin, expandable graphite, active carbon and copper powder by mixing, wherein paraffin mass fraction accounts for 60%, the paraffin melting point is selected between 50-70 DEG C, expandable graphite mass fraction accounts for 20%, and sum of mass fraction of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release speed, no corrosivity to metal containers and no changed profile after phase change.

Description

1. Technical field [0001] The invention relates to the field of phase-change heat storage materials, in particular to a novel phase-change heat storage material prepared by compounding organic matter, expanded graphite, activated carbon and copper powder. 2. Background technology [0002] Energy saving and environmental protection are an important topic in the field of energy utilization. Using phase change latent heat of phase change heat storage materials to store energy is a new type of energy saving technology. During the phase change process, the phase change material absorbs the heat of the surrounding environment, and releases heat to the surrounding environment when the temperature of the surrounding environment decreases, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in solar energy utilization, heat energy recovery, air conditioning and refrigeration, building energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
Inventor 王金平朱彩云
Owner ZHENJIANG XINMENGXI ENERGY TECH
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