Phase-change thermal storage material

A technology of phase change heat storage and weight percentage, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as unstable quality and limited storage energy of phase change materials, and achieve saving of fossil raw materials, phase change Large latent heat and simple production process

Inactive Publication Date: 2012-02-01
北京韩谊集成房屋科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existence of the heat storage material can reduce the size of the original boiler, so as to increase the working efficiency and function. It can also convert the electric energy in the low valley period into heat energy and store it in the heat storage material, and exchange heat through heat exchange during the peak period. and hot water, but the currently developed phase change materials have limited storage capacity and unstable quality, and there are many problems

Method used

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Experimental program
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Embodiment 1

[0014] Embodiment 1: take raw material according to following weight percentage:

[0015] Silicon dioxide 41%, alumina 4.8%, calcium oxide 0.8%, magnesium oxide 0.8%, potassium oxide 0.7%, sodium oxide 2.1%, iron oxide 0.6%, copper oxide 2.8%.

[0016] Put the above raw materials in a container, add 46.4% water by weight into the container, and stir evenly until they are evenly mixed.

Embodiment 2-3

[0017] Embodiment 2-3 is prepared by using the following raw materials in weight percentage, and the preparation method is the same as that of Embodiment 1.

[0018] raw material name Example 2 Example 3 silica 42％ 37％ Aluminum oxide 3.9％ 7.9％ Calcium Oxide 0.4％ 1.2％ magnesium oxide 0.6％ 1.2％ potassium oxide 0.6％ 1.2％

[0019] sodium oxide 1.8％ 2.4％ iron oxide 0.4％ 0.8％ Copper oxide 2.8％ 4.0％ water 47.5％ 44.3％

[0020] The phase change thermal storage material of the present invention is analyzed by a differential scanning calorimeter (DSC), and obtained as follows: figure 1 Performance curves of phase change thermal storage materials shown.

[0021] figure 1 It shows that in the temperature range of the external heat factor below 50°C, the phase change heat storage material of the present invention undergoes primary heat absorption, and in the temper...

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Abstract

The invention discloses a phase-change thermal storage material, comprising the following raw materials by weight: 37-42% of silica, 3.8-7.8% of alumina, 0.5-1.1% of calcium oxide, 0.5-1.1% of magnesium oxide, 0.5-1.1% of potassium oxide, 1.7-2.3% of sodium oxide, 0.3-0.9% of iron oxide, 2.8-3.0% of copper oxide, and 39.3-52.5% of water. With the advantages of simple preparation process, great latent heat of phase change, stable exothermic performance, no toxicity and non-corrosiveness, low cost, etc., the phase-change thermal storage material provided in the invention can be used widely in the fields of energy storage boilers, energy storage cool houses, energy storage heat absorption tanks, refrigerator cars, heat preservation and insulation of buildings, functional clothes, shoes, and spaceflight, etc. Used in boilers, the phase-change thermal storage material of the invention can save a lot of fossil raw materials, and brings considerable economic benefits.

Description

technical field [0001] The patent of the invention relates to energy storage materials, in particular to a phase change heat storage material. Background technique [0002] Heat storage can solve the waste caused by the mismatch in time and space between heat supply and demand. At present, heat storage technology has been used in air conditioning, construction, cold room, refrigerated trucks, solar heat recovery storage, industrial waste heat recovery and other fields. In the field of heating, the usual electric boilers and other heaters store the off-peak electricity supplied from 21:00 pm to 7:00 am in water, which requires a large storage tank and system, and the large-scale heating equipment brings a lot of costs. The existence of the heat storage material can reduce the size of the original boiler, so as to increase the working efficiency and function. It can also convert the electric energy in the low valley period into heat energy and store it in the heat storage mate...

Claims

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Application Information

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IPC IPC(8): C09K5/16C09K5/06
Inventor 李宙确崔龙鹤
Owner 北京韩谊集成房屋科技发展有限公司
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