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Novel inorganic composite high-thermal-conductivity phase-change heat storage material and preparation method thereof

A phase-change heat storage material and inorganic composite technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of liquid leakage, poor thermal conductivity, and inability to fully exert the heat storage function of heat storage materials, so as to prevent leakage , the effect of high phase change enthalpy

Inactive Publication Date: 2017-05-24
ZHENJIANG XINMENGXI ENERGY TECH
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  • Summary
  • Abstract
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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 lead to the problem of liquid leakage

Method used

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Examples

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Embodiment Construction

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

[0019] Process the porous aluminum into a cylinder of φ46*1500. Make a mold according to the size of φ46*1500, and put the finished porous aluminum into the mold. Heat and melt the crystalline hydrated salt, add polymer water-absorbent resin (SPA) according to 1% mass ratio, stir and absorb for 1 hour, then inject the mixture into the mold, so that the mixture liquid is immersed in the porous aluminum, exceeding the immersion position by 10%. Cool to remove the mold, remove excess crystalline hydrated salt, and obtain a shaped heat storage material. For porous aluminum, a material with a porosity of 90% is selected, so the mass fraction of porous aluminum in the mixture accounts for 16%, the mass fraction of crystalline hydrated salt accounts for 83.2%, and the mass fraction of polymer water-absorbent resin (SPA) accounts for 0.8%. The latent heat of phase change of this material is 20...

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PUM

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Abstract

The invention discloses a novel inorganic composite high-thermal-conductivity phase-change heat storage material and a preparation method thereof. The heat storage material is prepared from, in percentage by mass, 83.2% of crystal salt hydrate, 0.8% of an SAP (super absorbent polymer) and 16% of porous aluminum through composition, and the porosity of selected porous aluminum in the materials is 90% or higher. The material has the advantages that the heat absorption and release speeds are high, the heat storage capacity is high, and the appearance is unchanged after phase change.

Description

technical field [0001] The invention relates to the field of phase change heat storage materials, in particular to a heat storage material prepared by compounding crystalline hydrated salt, polymer water-absorbing resin (SPA) and porous aluminum. Background technique [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 saving, aeros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 王金平陈振乾
Owner ZHENJIANG XINMENGXI ENERGY TECH
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