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Thermo-electric generation module using LNG cold energy and production method thereof

A thermoelectric power generation module, cold energy technology, applied in the directions of generators/motors, electrical components, etc., can solve the problems of optimization, low performance of thermoelectric materials, etc., and achieve the effect of convenient series connection and no moving parts

Inactive Publication Date: 2009-08-12
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, since the three factors that determine the Z value are interrelated parameters, all of which are functions of carrier concentration, it is impossible to optimize them at the same time, which is the main reason for the low performance of current thermoelectric materials.

Method used

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  • Thermo-electric generation module using LNG cold energy and production method thereof
  • Thermo-electric generation module using LNG cold energy and production method thereof
  • Thermo-electric generation module using LNG cold energy and production method thereof

Examples

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Effect test

Embodiment 1

[0037] Mirror polished quartz SiO 2 Glass film negative, the size of the film is 30mm×15mm×2mm; before sputtering, the substrate is treated in acetone, deionized water and anhydrous alcohol with an ultrasonic cleaner for 20 minutes and then dried;

[0038] Preheat the mixed crystals Bi, Te, Pb and Sb at 200°C for 1 hour in an Ar working atmosphere, and then fix the mixed crystals as a target on the cathode of the RF magnetron sputtering system;

[0039] Magnetron sputtering deposition of Bi, Te, Pb mixed crystals on the film, the molar mass ratio of Pb: Bi: Sb = 0.1: 6:1, to prepare P-type nano film; magnetron sputtering deposition of Te, Pb on the film Bi and Sb mixed crystals, the molar mass ratio is Te: Bi: Sb = 0.15: 6:1; N-type nano film sheets are prepared. The preparation parameters of the nano-film material are: working gas is Ar, working pressure is 2.5Mpa, sputtering power is 20W, and the thermoelectric nano-coating obtained by sputtering is 260nm, and the temperature is...

Embodiment 2

[0043] Use polyurethane as the negative film, the size of the film is 50mm×20mm×2mm; before sputtering, the substrate is treated in acetone, deionized water and anhydrous alcohol with an ultrasonic cleaner for 30 minutes and then dried;

[0044] Preheat the mixed crystals Bi, Te, Pb and Sb at 200°C for 1 hour in an Ar working atmosphere, and then fix the mixed crystals as a target on the cathode of the RF magnetron sputtering system;

[0045] Magnetron sputtering deposition of Bi, Te, Pb mixed crystals on the film, the molar mass ratio of Pb: Bi: Sb = 0.15: 6:1, to prepare P-type nano film; magnetron sputtering deposition of Te, Pb on the film Bi and Sb mixed crystals, the molar mass ratio is Te: Bi: Sb = 0.15: 6:1; N-type nano film sheets are prepared. The preparation parameters of the nano-film material are: working gas is Ar, working pressure is 3Mpa, sputtering power is 25W, and the thermoelectric nano-coating obtained by sputtering is 400nm, and the temperature is N at 300℃. ...

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Abstract

The invention relates to a thermoelectric generation module utilizing LNG cold energy, and a preparation method thereof. The preparation method comprises the following steps that: a mirror-polished quartz SiO2 glass sheet or polyurethane is taken as a base film; mixed crystals of Te, Bi and Sb are subjected to magnetron sputtering deposition according to the molar ratio of Pb to Bi to Sb being (0.1-0.3):6:1 and Te to Bi to Sb being (0.05-0.2):6:1 respectively so as to prepare a P-type nano-film sheet and an N-type nano-film sheet; and the P-type and the N-type nano-film sheets in series connection are inlaid into insulating ceramics and connected so as to form a main structure of the thermoelectric generation module used at low temperature. The LNG cold energy can be utilized better by use of the thermoelectric generation module. The module adopts a full-static thermoelectric-material thermoelectric generation mode, is simple in structure, can conveniently perform series or parallel combination, and is a way with great prospects to realize thermoelectric generation through LNG cold energy at low temperature.

Description

Technical field [0001] The invention relates to the development and utilization of new energy sources, and is a branch of the engineering thermophysics-the development of thermoelectric power generation modules. In particular, it relates to a thermoelectric power generation module using LNG cold energy for low-temperature use and a preparation method thereof. Background technique [0002] LNG (liquefied natural gas) is a low-temperature (-162°C) liquid mixture obtained by freezing and liquefying natural gas through a low-temperature process. It is a clean and efficient energy source. The currently proposed LNG cold energy power generation mainly uses the low-temperature cold energy of LNG to liquefy the circulating working fluid in the power generation device, and then the working fluid is heated and gasified and then expanded in the gas turbine to drive the generator to generate electricity. For example, in 2007, Fujian imported LNG at a scale of 260×10t per year. South China Un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N11/00C03C17/22
Inventor 王学生胡放戚学贵代晶晶任超
Owner EAST CHINA UNIV OF SCI & TECH
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