A thermoelectric power generation device capable of effectively increasing the end difference temperature

A technology of thermoelectric power generation and thermoelectric power generation sheet, which is applied in the directions of generators/motors, electrical components, metal material coating processes, etc., can solve the problem that the temperature of the low temperature end of the thermoelectric power generation device cannot be effectively reduced, the heat exchange efficiency of the cooling system is limited, and the heat collection The problem of short service life of the material can achieve the effect of high absorption performance, increasing temperature and reducing the temperature of low temperature end.

Active Publication Date: 2021-10-29
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The analysis found that considering the prospect of thermoelectric power generation, the above-mentioned invention has two deficiencies. One is that the heat collection effect of the system itself is poor, or the service life of the heat collection material is short, which is not suitable for long-term work; Design the structure of the internal heat dissipation surface. The existing heat dissipation surface is a smooth plane, which limits the heat transfer efficiency of the cooling system and cannot effectively reduce the temperature at the low temperature end of the thermoelectric power generation device, resulting in the end of the high and low temperature ends of the entire system. The difference temperature is small, so the energy efficiency is low

Method used

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  • A thermoelectric power generation device capable of effectively increasing the end difference temperature
  • A thermoelectric power generation device capable of effectively increasing the end difference temperature
  • A thermoelectric power generation device capable of effectively increasing the end difference temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment includes a heat collecting device 1, a thermoelectric power generation sheet assembly 2, and a cooling system. The three are arranged sequentially from top to bottom. The high temperature end of the thermoelectric power generation sheet assembly 2 is in fixed contact with the lower surface of the heat collection device 1. The cooling system includes a heat sink. 3. Bracket 4, acrylic plate 5, peristaltic pump and cooling water tank, the lower surface of heat dissipation plate 3 and a plurality of acrylic plates 5 form a heat exchange chamber 6, the heat exchange chamber 6 is fixed on the support 4, and the cooling water tank passes through the peristaltic pump and pipelines It forms a circulation loop with the heat exchange chamber 6, and the upper surface of the cooling plate 3 is in fixed contact with the low-temperature end of the thermoelectric chip assembly 2. The heat collecting device 1 is a red copper plate with a selective absorption film on the u...

Embodiment 2

[0045] The structure of the thermoelectric power generation device of this embodiment is the same as that of Embodiment 1, wherein the preparation steps of the copper plate with selective absorption film are:

[0046] A. Sol preparation:

[0047] 1) Weigh a certain amount of tetraethyl orthosilicate (TEOS), absolute ethanol (EtOH), deionized water (H 2 (0), hydrochloric acid (HCl) are successively added in the Erlenmeyer flask A, heated in a water bath at 60° C. and magnetically stirred for 30 min;

[0048] 2) Weigh a certain amount of salicylic acid (SA) and a certain amount of absolute ethanol and add them to beaker B in sequence, and continue magnetically stirring at room temperature until the salicylic acid is fully dissolved in absolute ethanol;

[0049] 3) Weigh a certain amount of polyethylene glycol and place it in beaker C, add a certain amount of absolute ethanol, and stir magnetically for 30-60 minutes at room temperature to fully mix;

[0050] 4) Slowly add the s...

Embodiment 3

[0058] The structure of the thermoelectric power generation device of this embodiment is the same as that of Embodiment 1, wherein the preparation steps of the copper plate with a selective absorption film are:

[0059] A. Sol preparation:

[0060] 1) Weigh a certain amount of tetraethyl orthosilicate (TEOS), absolute ethanol (EtOH), deionized water (H 2 (0), hydrochloric acid (HCl) are successively added in the Erlenmeyer flask A, heated in a water bath at 60° C. and magnetically stirred for 30 min;

[0061] 2) Weigh a certain amount of salicylic acid (SA) and a certain amount of absolute ethanol and add them to beaker B in sequence, and continue magnetically stirring at room temperature until the salicylic acid is fully dissolved in absolute ethanol;

[0062] 3) Weigh a certain amount of polyethylene glycol and place it in beaker C, add a certain amount of absolute ethanol, and stir magnetically for 30-60 minutes at room temperature to fully mix;

[0063] 4) Slowly add the...

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Abstract

The invention discloses a thermoelectric power generation device capable of effectively increasing the end difference temperature. The lower surface of the device is in fixed contact. The cooling system includes a cooling plate, a bracket, an acrylic plate, a peristaltic pump and a cooling water tank. The lower surface of the cooling plate and multiple acrylic plates form a heat exchange chamber. The heat exchange chamber is fixed on the bracket, and the cooling water tank passes through the peristaltic pump. And the pipeline and the heat exchange chamber form a circulation loop, the upper surface of the heat dissipation plate is in fixed contact with the low-temperature end of the thermoelectric chip assembly, the heat collecting device is a copper plate with a selective absorption film on the upper surface, and the lower surface of the heat dissipation plate is Corrugated surface. The invention can effectively improve the heat collection efficiency at the high temperature end by coating the selective absorption film, and at the same time improve the heat dissipation efficiency at the low temperature end through the corrugated surface, thereby effectively increasing the end difference temperature and improving the power generation capacity of the thermoelectric power generation device.

Description

technical field [0001] The invention relates to a thermoelectric power generation device, in particular to a thermoelectric power generation device capable of effectively increasing the end difference temperature. Background technique [0002] With the depletion of fossil energy and the aggravation of environmental pollution, solar energy, as a clean energy source, has attracted extensive attention from researchers in various countries. Thermoelectric power generation technology is one of the applied technologies for utilizing solar energy. Thermoelectric power generation technology is a technology based on the Seebeck effect. After the temperature difference between the upper and lower surfaces of the thermoelectric power generation sheet, an electromotive force will be generated and electric energy will be output. The greater the temperature difference between the high and low temperature ends of the thermoelectric power generation sheet, the greater its ability to output ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N11/00C23C26/00
CPCC23C26/00H02N11/002
Inventor 齐聪丁子涂江林王宇星孙亮
Owner CHINA UNIV OF MINING & TECH
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