Constant-temperature phase-change energy storage material and preparation method thereof

A phase-change energy storage material and constant temperature technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of unreasonable utilization, energy waste, etc., and achieve the effect of easy acquisition, low price, and good cycle stability

Inactive Publication Date: 2020-03-06
PIONEER ENERGY JIANGSU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Energy is the basis for human survival. However, due to the time and space mismatch between energy supply and demand, energy was

Method used

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  • Constant-temperature phase-change energy storage material and preparation method thereof
  • Constant-temperature phase-change energy storage material and preparation method thereof

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] The invention provides a constant-temperature phase-change energy storage material, which uses 94% aluminum ammonium sulfate dodecahydrate, 3% expanded graphite, 2% deionized water, and 1% fumed silicon dioxide in terms of mass percentage.

[0018] Its preparation method is as follows:

[0019] 1) Weigh the raw materials according to the mass percentage, and heat and melt ammonium aluminum sulfate dodecahydrate in a water bath at 100°C;

[0020] 2) Add deionized water to the molten ammonium aluminum sulfate d...

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Abstract

The invention discloses a constant-temperature phase-change energy storage material and a preparation method thereof. The phase-change energy storage material comprises the following components by mass percentage: 94% of aluminum ammonium sulfate dodecahydrate, 3% of expanded graphite, 2% of deionized water and 1% of fumed silica. The preparation method of the phase-change energy storage materialis simple, the phase-change temperature of the obtained phase-change material is 81DEG C, the phase-change latent heat is 260J/g, and the temperature is constant in the phase-change process, the undercooling degree is smaller than 1DEG C, the cycling stability is good, and the material performance is not attenuated after 2000 times of heat charging and release cycles. The raw materials of the phase-change material are low in price, easily available, safe and non-toxic, therefore the constant-temperature phase-change energy storage material is suitable for wide application in distributed heat supply and industrial residual and waste heat recovery fields.

Description

technical field [0001] The invention relates to the technical field of heat storage materials, in particular to a constant temperature phase change energy storage material and a preparation method thereof. Background technique [0002] Energy is the basis for human survival. However, due to the time and space mismatch between energy supply and demand, energy waste and irrational use have become one of the key factors restricting the rapid development of China and other countries in the world. Energy storage can alleviate the contradiction between energy supply and demand and improve energy utilization. Therefore, energy storage plays a pivotal role in the practical application of energy conservation. [0003] Phase change energy storage is to store thermal energy by using phase change materials to undergo phase change within the phase change temperature range to absorb or release latent heat of phase change. When the material changes its phase state, the latent heat of phas...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 马振国崔谢亮李文刘硕于国强王维奕
Owner PIONEER ENERGY JIANGSU
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