Composite material based on microwave heating, heat storage system and operation method thereof

A composite material and microwave heating technology, applied in the direction of heat exchange materials, heating methods, heating systems, etc., can solve the problems of reducing the service life of heat storage materials, reducing the proportion of heat storage materials, and the inability to transfer heat to the interior, etc., to achieve Low cost and rapid heat storage effect

Inactive Publication Date: 2019-10-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Electricity is still dominated by thermal power, which contains sulfur, nitrogen and other elements, pollutes the environment, and emits a large amount of greenhouse gases at the same time, which does not conform to the idea of ​​green environmental protection;
[0005] 2) Using conventional heating technology, the electric furnace wire is bundled outside the heat storage material. The resistance wire heating process only heats the surface of the heat storage material. There is a problem of uneven heating (ie, temperature gradient), the external temperature is too high, and the int

Method used

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  • Composite material based on microwave heating, heat storage system and operation method thereof
  • Composite material based on microwave heating, heat storage system and operation method thereof
  • Composite material based on microwave heating, heat storage system and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The heat storage system provided in this embodiment includes: a microwave generator and a wave-absorbing phase-change heat-storage brick, the microwave generator is arranged on one side of the wave-absorbing phase-change heat-storage brick, and the wave-absorbing phase-change heat-storage brick It is arranged on both sides of the circulating water for heating, and a composite material is arranged in the wave-absorbing phase-change heat storage brick. Wherein, the composite material is a paraffin / graphene composite material, and its preparation steps are as follows:

[0060] (1) Take 100g of paraffin and heat and melt it at a temperature higher than its melting point (60°C);

[0061] (2) Add 1.0 g of graphene, and mix well, so that the graphene is dispersed in the paraffin to obtain a paraffin / graphene composite material.

experiment example 1

[0063] The paraffin / graphene composite material is injected into the heat storage brick, and the heat is stored in a microwave environment. At the same time, as a comparison, the paraffin / graphene composite material is heated by traditional resistance wire for heat storage.

[0064] Table 2 is the detailed data comparison between the microwave heating heat storage method and the traditional resistance wire heating heat storage method in Experimental Example 1.

[0065] Table 2 Data comparison of heat storage bricks with different heating methods (microwave method and resistance wire method) in Experimental Example 1

[0066]

[0067]

Embodiment 2

[0069] The heat storage system provided in this embodiment includes: a microwave generator and a wave-absorbing phase-change heat-storage brick, the microwave generator is arranged on one side of the wave-absorbing phase-change heat-storage brick, and the wave-absorbing phase-change heat-storage brick It is arranged on both sides of the circulating water for heating, and a composite material is arranged in the wave-absorbing phase-change heat storage brick. Among them, the composite material is Mg(NO3) 2 6H2O / activated carbon composite material, its preparation steps are as follows:

[0070] (1) Take 100g Mg(NO3) 2 6H2O is heated and melted at a temperature higher than its melting point (90°C);

[0071] (2) Add 2g of activated carbon and mix well to make the activated carbon dispersed in the hydrated salt to obtain the hydrated salt / activated carbon composite material.

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PUM

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Abstract

The invention discloses a composite material based on microwave heating, a heat storage system and an operation method thereof. The composite material comprises a heat storage phase change material and a wave absorption material, wherein the mass ratio of the heat storage phase change material to the wave absorption material is 1 to (0.01-0.02); the heat storage phase change material and the waveabsorption material are heated, melted or mixed to prepare the composite material; and heat storage temperature of the composite material heated by microwave is 91-607 DEG C. According to the heat storage system, new energy or off-peak electricity is used for supplying power to a microwave system; the microwave environment is used for heating the composite material and storing heat; the heated heat is supplied to user sides through circulation heating water; the heat storage system is green and environmentally friendly, is low in cost and rapid in heat storage, and is taken as an extremely promising new mechanism.

Description

technical field [0001] The invention belongs to the technical field of heat storage of phase change materials, and in particular relates to a composite material based on microwave heating, a heat storage system and a working method thereof. Background technique [0002] At present, coal is the main fuel for heating in winter in northern China. However, with the development of heating technology and equipment, heating methods are gradually diversified, and the structure of heating energy has also undergone some changes. At present, the heating area using gas, oil, and electricity as heating energy is increasing year by year, and is accepted by more and more people. The heating energy structure composed of coal, gas, oil, and electricity is becoming more and more reasonable. [0003] The heating mechanism currently used is: traditional electric heating - heat storage system - heating water - users. Among them, there are mainly the following problems: [0004] 1) Electricity ...

Claims

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Application Information

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IPC IPC(8): F24D11/00F28D20/02C09K5/06
CPCC09K5/063F24D11/004F28D20/021Y02E60/14
Inventor 韩晓刚杨超杨恒瑞张洲杰白宇鸽尹玉婷
Owner XI AN JIAOTONG UNIV
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