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High-temperature energy storage phase-change material and preparation and application thereof

An energy storage phase change and high temperature technology, which is applied in the field of aluminum alloy high temperature energy storage phase change materials, can solve the problem of high latent heat in preparation, and achieve the effects of high energy storage density, high thermal conductivity, and good thermal cycle performance

Inactive Publication Date: 2012-01-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
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Problems solved by technology

However, the preparation of Al-Mg-Sn ternary alloy system has high latent heat, and there are few reports on the literature and patents applied to solar power plants.

Method used

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  • High-temperature energy storage phase-change material and preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Evenly mix aluminum powder with a mass percentage of 60% and a purity of 99.5%, magnesium powder with a mass percentage of 35% and a purity of 99.5% and tin powder with a mass percentage of 5% and a purity of 99.0% Finally, put it into a high-energy planetary ball mill with a weight ratio of 50:1 at 500 R / min, and after ball milling for 5 hours, take a wet sample.

[0016] Put the ball-milled product into a high-temperature tube furnace, and under the protection of argon atmosphere, heat up to 500°C at 10°C / min, then roast for 3 hours, wait for the product to cool down to room temperature naturally, and grind it into powder to obtain the product.

[0017] The melting enthalpy of alloy products was investigated with Netzsch Proteus STA449 thermal analyzer. The experimental conditions are: the sample dosage is about 10mg, the argon atmosphere is 50ml / min, the heating rate is 20°C / min, and the experimental temperature range is 40-600°C. Under the same conditions, the melti...

Embodiment 2

[0019] Evenly mix aluminum powder with a mass percentage of 60% and a purity of 99.5%, magnesium powder with a mass percentage of 30% and a purity of 99.5% and tin powder with a mass percentage of 10% and a purity of 99.0% Finally, put it into a high-energy planetary ball mill with a weight ratio of 50:1 at 500 R / min, and after ball milling for 5 hours, take a wet sample.

[0020] Put the ball-milled product into a high-temperature tube furnace, under the protection of an argon atmosphere, raise the temperature to 600°C at 10°C / min, and then roast for 7 hours. After the product naturally cools down to room temperature, grind it into powder to obtain the product.

Embodiment 3

[0022] Evenly mix 60% by mass of aluminum powder with a purity of 99.5%, 25% by mass of magnesium powder with a purity of 99.5% and 15% by mass of tin powder with a purity of 99.0% Finally, put it into a high-energy planetary ball mill with a weight ratio of 50:1 at 500 R / min, and after ball milling for 5 hours, take a wet sample.

[0023] Put the ball-milled product into a high-temperature tube furnace, under the protection of argon atmosphere, heat up to 700°C at 10°C / min, and then roast for 5 hours. After the product naturally cools down to room temperature, grind it into powder to obtain the product.

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Abstract

The invention relates to a high-temperature energy storage phase-change material and preparation and application thereof. The high-temperature energy storage phase-change material is prepared by a method of carrying out high-energy ball milling and powder metallurgy on an aluminum-magnesium-stannum (Al-Mg-Sn) ternary alloy system. In the Al-Mg-Sn ternary alloy, the weight percent content of Mg is25-35 percent, and the weight percent content of Sn is 5-10 percent. The high-temperature energy storage phase-change material has the characteristics of high latent heat of phase change, phase change stability and reversible cyclicity. By adopting the high-temperature energy storage phase-change material, industrial waste heat recovery, heat energy storage and transport peak clipping and valley filling of thermal power plants, especially solar power plants, and the high-efficiency utilization of energy sources can become possible.

Description

technical field [0001] The invention relates to an aluminum alloy high temperature energy storage phase change material and its preparation and application. Background technique [0002] The energy problem is one of the most serious problems facing the economic and social development of the world and China. The shortage of conventional energy and the resulting environmental pollution will directly affect the implementation of the sustainable development strategy of human beings in the future. Solar energy, as a kind of pollution-free natural energy with unlimited reserves, has attracted widespread attention. Among the solar thermal utilization technologies, solar water heaters, solar environment-friendly buildings, solar photovoltaic power generation and solar thermal power generation are widely used at present. Concentrating solar thermal energy on a large scale and generating electricity is an important energy basis for the sustainable development of the electric power in...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C23/02C22C1/04
Inventor 孙立贤赵军宁徐芬张箭姜春红
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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