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A cement concrete pavement energy conversion device and preparation method thereof

An energy conversion device and cement concrete technology, which is applied in the manufacture/processing of thermoelectric devices, generators/motors, and thermoelectric device node lead-out materials, etc., can solve the problems of large differences in strength, difficulty in large-scale production, and inability to coordinate deformation To achieve the effect of improving thermoelectric conversion capability, ensuring integrity and ensuring stability

Active Publication Date: 2022-02-22
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of thermoelectric elements made of such metals or semiconductors is quite different from that of cement concrete pavement, and the two cannot coordinate and deform under load, thus causing damage to the internal structure of cement concrete pavement
In addition, such thermoelectric elements are often expensive and difficult to produce on a large scale, and cannot be widely used in cement concrete pavement structures

Method used

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  • A cement concrete pavement energy conversion device and preparation method thereof
  • A cement concrete pavement energy conversion device and preparation method thereof
  • A cement concrete pavement energy conversion device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to figure 1 and figure 2 , an energy conversion device for cement concrete pavement, comprising a conversion unit 1, the top and bottom of which are respectively provided with positive and negative electrodes. The conversion unit 1 adopts graphene-reinforced cement-based composite material. The graphene-reinforced cement-based composite material is added graphene as a thermoelectric component in the cement matrix, which has a significant thermoelectric effect.

[0033] Graphene reinforced cement-based composite material of the present invention can be prepared by the following method:

[0034] Add graphene to water and mechanically stir to form a suspension, and then ultrasonically disperse to obtain a uniformly dispersed graphene suspension for later use;

[0035] Add cement and water reducing agent to the graphene suspension in sequence, carry out gradient stirring to make it evenly stirred, and then shape it, and then make it through airtight maintenance.

...

Embodiment 2

[0045] On the basis of Embodiment 1, the outer surface of the conversion unit 1 is roll-coated with an epoxy resin sealing layer 4 to perform anti-seepage treatment on the energy conversion device.

Embodiment 3

[0047] refer to figure 1 and figure 2 , on the basis of Embodiment 1 or 2, the number of conversion units 1 is multiple, and the electrodes include a positive electrode conductive copper mesh 2.3, a negative electrode conductive copper mesh 2.2 and a Z-shaped conductive copper mesh 2.1, which can be placed on each conversion unit 1. The positive electrode conductive copper mesh 2.3 (or the negative electrode conductive copper mesh 2.2) and the negative electrode conductive copper mesh 2.2 (or the positive electrode conductive copper mesh 2.3) are arranged at the end, and the positive electrode conductive copper mesh of the adjacent conversion unit 1 is connected and conducted with the Z-shaped conductive copper mesh 2.1 2.3 (or negative electrode conductive copper mesh 2.2) and negative electrode conductive copper mesh 2.2 (or positive electrode conductive copper mesh 2.3), realize the series, parallel or series-parallel combination of multiple conversion units 1, and finally...

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Abstract

The invention is an energy conversion device for cement concrete pavement, which is based on graphene-reinforced cement-based composite material, utilizes the thermoelectric effect of graphene-reinforced cement-based composite material, can convert thermal energy into electric energy under the action of temperature difference, and is suitable for the energy of cement concrete pavement Collect conversions. The present invention also provides its preparation method. The conversion unit is prepared by processing the dried graphene-enhanced cement-based composite material. The upper and lower surfaces of the conversion unit are coated with conductive silver paste and inserted into a conductive copper mesh to make an electrode. The Z-shaped conductive copper mesh is used Connect two adjacent conversion units, connect the positive and negative electrodes of the external circuit with a positive conductive copper mesh and a negative conductive copper mesh, and roll-coat epoxy resin on the outer surface of the structure for anti-seepage treatment. The invention can convert heat energy in the cement pavement into electric energy, thereby realizing the energy conversion of the cement concrete pavement, and has the advantages of high Seebeck coefficient, stable thermoelectric performance, simple preparation process, expandable structure, and coordination with the deformation of the cement pavement.

Description

technical field [0001] The invention belongs to the technical field of energy conversion, in particular to an energy conversion device for cement concrete pavement and a preparation method thereof. Background technique [0002] In most parts of our country, the highest temperature in summer can reach 35°C-40°C. Under the continuous heat radiation of the sun, the cement concrete pavement will absorb a large amount of heat energy, which will cause the temperature of the cement concrete pavement to rise sharply. not being used effectively. In addition, the thermal conductivity of cement concrete is low, which is a poor conductor of heat. A large amount of heat accumulated inside is not easy to release, and the internal high temperature lasts for a long time. It affects the quality and service life of the road surface, and endangers traffic safety. Therefore, it is very important to convert and collect the heat energy in the cement concrete pavement. [0003] Most existing ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B41/63H02N11/00H01L35/22H01L35/32H01L35/34C04B14/02H10N10/01H10N10/17H10N10/855
CPCC04B28/04C04B41/63C04B41/4853H02N11/002H10N10/855H10N10/01H10N10/17C04B14/024C04B2103/302
Inventor 魏亚崔一纬王亚琼沙爱民
Owner TSINGHUA UNIV
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