Phase change thermal storage material and manufacturing method thereof

A technology of phase change heat storage and mass percentage, applied in heat exchange materials, chemical instruments and methods, heat storage heaters, etc., can solve problems such as small heat storage per unit volume, supercooling and phase separation, and low material density , to achieve the effect of stable safety performance, stable performance and low corrosion

Inactive Publication Date: 2013-01-16
北京韩谊集成房屋科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the organic phase change mainly includes paraffin, acetic acid and other organic substances; the organic phase change material is 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. This results in small heat storage per unit volume of organic phase change heat storage materials; inorganic phase change materials mainly include crystalline hydrated salts, molten salts, metals or alloys, etc. Inorganic phase change heat storage materials have higher heat storage per unit volume and Good thermal conductivity, but the existing inorganic phase change materials have the following disadvantages: easy to produce supercooling and phase separation

Method used

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  • Phase change thermal storage material and manufacturing method thereof

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Effect test

Embodiment 1

[0027] According to mass percentage, take 40 parts of silicon oxide, 9 parts of aluminum oxide, 0.06 part of iron oxide, 0.2 part of calcium oxide, 0.05 part of magnesium oxide, 3 parts of potassium oxide, 3 parts of sodium oxide and 6 parts of zinc oxide, put the above materials in a mortar 38.69 parts by mass of water were added to the mixture and mixed uniformly to obtain a phase change material. The phase change temperature of the phase change material was 120.18° C. and the heat of phase change was 1481 J / g.

Embodiment 2

[0029] Take 45 parts of silicon oxide, 11 parts of aluminum oxide, 0.3 parts of iron oxide, 0.5 parts of calcium oxide, 0.4 parts of magnesium oxide, 4 parts of potassium oxide, 5 parts of sodium oxide and 11 parts of zinc oxide according to mass percentage, put the above materials in a mortar After fully grinding in a medium, add 22.8 parts by mass of water and mix uniformly to obtain a phase change material. The phase change temperature of the phase change material is 105.3° C., and the heat of phase change is 1237 J / g.

Embodiment 3

[0031] Take 43 parts of silicon oxide, 10 parts of aluminum oxide, 0.1 part of iron oxide, 0.3 parts of calcium oxide, 0.12 parts of magnesium oxide, 3.5 parts of potassium oxide, 4.5 parts of sodium oxide and 8 parts of zinc oxide according to mass percentage, and put the above materials in a mortar After being fully ground in a medium, 30.48 parts by mass of water was added and mixed uniformly to obtain a phase change material. The phase change temperature of the phase change material was 103.5° C., and the heat of phase change was 1311 J / g.

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Abstract

The invention discloses a phase change thermal storage material and a manufacturing method thereof. The material is formed by the way that 40-45wt% of silicon oxide, 9-11wt% of aluminium oxide, 0.06-0.3wt% of ferric oxide, 0.2-0.5wt% of calcium oxide, 0.05-0.4wt% of magnesium oxide, 3-4wt% of potassium oxide, 3-5wt% of sodium oxide and 6-11wt% of zinc oxide are uniformly ground and then are uniformly mixed with 22.8-38.69wt% of water.

Description

technical field [0001] The invention relates to a phase-change thermal storage material and a manufacturing method thereof, in particular to an inorganic phase-change thermal storage material and a manufacturing method thereof. Background technique [0002] Heat storage technology is an important technology to improve the utilization rate of heat energy, solve the problem of out-of-synchronization between heat use and heat supply, and an important link in the field that can meet the needs of various energy sources. Heat storage technology is widely used, not only for waste heat recovery, air conditioning heat storage , Power peak shaving, and can be used for discontinuous energy (wind energy, solar energy, etc.) to shift to continuous energy. Using this technology can reduce energy consumption, save operating costs, and realize efficient and reasonable use of energy. [0003] Phase change materials have the ability to change their physical state within a certain temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06F24H7/02
Inventor 李宙确
Owner 北京韩谊集成房屋科技发展有限公司
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