Phase change energy storage material

A technology of phase change energy storage materials and nucleating agents, which is applied in the field of energy storage materials, can solve the problems of large supercooling degree of phase change energy storage materials, and achieve the effect of large latent heat of phase change

Active Publication Date: 2012-04-11
北京昌日新能源科技有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, the literature [Liu Dong, Xu Yunlong. Effects of nucleating agents on the energy storage performance of calcium chloride hexahydrate phase change materials, Acta Solar Sinica, 2007, 28(7): 732-738] and the literature [Xu Yunlong, Liu Dong .Research on supercooling properties of calcium chloride hexahydrate phase change materials. Materials Engineering, 2006, Suppl. Borax, strontium chloride hexahydrate, Ba(OH) 2 ·8H 2 The heat storage performance of the composite system of O and other nucleating agents and calcium chloride hexahydrate, but the supercooling degree of the phase change energy storage materials obtained in the above literature research is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 400g of calcium chloride crystalline hydrate into a 500ml beaker and heat to 40°C, then add 2g of barium sulfate and 4g of strontium chloride hexahydrate as nucleating agents while stirring, and continue to add 0.4g after the nucleating agents are completely dissolved Carboxymethyl cellulose and 0.4g hydroxyethyl cellulose, after stirring evenly, add 0.4g white graphite, after the white graphite is added and completely dissolved, the temperature is lowered and cooled to obtain a phase change energy storage material, which is put into a plastic container as a finished product to be prepared. use.

[0036] Perform performance measurement on the phase change energy storage material prepared in this embodiment:

[0037] The temperature drop method is used to test the phase change energy storage material, and the paperless recorder records the temperature, specifically:

[0038] Heat the phase-change energy storage material prepared in this example to 60°C, then put it ...

Embodiment 2

[0040] Put 400g of Antarctica into a 500ml beaker and heat to 50°C, then add 2g of barium sulfate and 4g of strontium chloride hexahydrate as nucleating agents while stirring, and continue to add 0.4g of carboxymethyl fiber after the nucleating agents are completely dissolved Add 0.4g of white graphite and 0.4g of hydroxyethyl cellulose, stir evenly, then add 16g of ammonium chloride and 4g of magnesium hydroxide, cool down and cool down after the addition of the additives is completed and completely dissolved, and a phase change energy storage material is obtained. Put it into a plastic container to become a finished product for use.

[0041] The same method as in Example 1 is used to measure the performance of the phase-change energy storage material prepared in this example, figure 2 The cooling curve of the phase-change energy storage material prepared for this example can be seen from the figure, the phase-change energy storage material is supercooled to 23.8°C and begin...

Embodiment 3

[0043] Put 400g of Antarctica into a 500ml beaker and heat to 45°C, then add 3g of barium sulfate and 6g of strontium chloride hexahydrate while stirring, and continue to add 0.6g of carboxymethylcellulose and 0.6g of Hydroxyethyl cellulose, after stirring evenly, add 0.4g of white graphite, after the addition of additives is completed and completely dissolved, the temperature is lowered and cooled to obtain a phase change energy storage material, which is put into a plastic container to become a finished product for use.

[0044] The same method as in Example 1 was used to measure the performance of the phase-change energy storage material prepared in this example. The phase-change energy storage material was heated to 40° C., put into a freezer and started to cool, and the liquid cooled rapidly. Such as image 3 Shown is the cooling curve of the phase change energy storage material prepared in this example. It can be seen from the figure that the phase change energy storage ...

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Abstract

The invention discloses a phase change energy storage material composed of antarcticite, nucleating agents, thickening agents and a thermal conducting agent. The nucleating agents are barium sulfate and strontium chloride hexahydrate. Compared with prior art, the invention adopts barium sulfate and strontium chloride hexahydrate as the nucleating agents. As the nucleating agents match with antarcticite in terms of crystal structure characteristics, crystal lattice parameters, and physical properties, etc., and thickening agents and other components are added for cooperation, the problem of large supercooling degree of phase change energy storage materials in prior art is solved. Meanwhile, due to great latent heat of phase transition in antarcticite, the phase change energy storage material of the invention is also characterized by great latent heat of phase change. Experiment results show that, the phase change energy storage material prepared in the invention has a supercooling degree of only 0.4DEG C.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, and more specifically, to a phase change energy storage material. Background technique [0002] Phase change energy storage materials are one of the hotspots in the development and research of energy utilization and material science at home and abroad in recent years. Phase change energy storage, also known as latent heat energy storage, is a material that uses phase change latent heat to store energy at a constant temperature. The heat storage / discharge is carried out by using energy, and the characteristics are: high heat storage density, heat storage / release process is carried out under constant temperature conditions, and the heat storage / release rate is controllable. In the above-mentioned heat storage / release process, the phase change material is the medium that realizes the phase change heat storage. When the temperature is higher than the phase change point, it absorbs h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
Inventor 秦善曹春峰杨军杨瑞霄
Owner 北京昌日新能源科技有限公司
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