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One-dimensional nano line array material temp. difference electric performance testing system

A technology of nanowire array and testing system, applied in the field of thermoelectric performance testing system

Inactive Publication Date: 2003-02-05
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And based on this principle, a one-dimensional nanowire array structure thermoelectric material performance testing system was established.

Method used

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  • One-dimensional nano line array material temp. difference electric performance testing system
  • One-dimensional nano line array material temp. difference electric performance testing system
  • One-dimensional nano line array material temp. difference electric performance testing system

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Embodiment Construction

[0016] According to the technology of the present invention, concrete test system has been made, such as figure 1 For the exterior photos of the test system, figure 2 A top plan view of the internal layout of the test system, image 3 A schematic diagram of the water flow heating cycle of the test system, Figure 4 It is a schematic circuit diagram of the test system, and the technology will be further described in detail below in conjunction with the accompanying drawings. Such as image 3 , Figure 4 Shown:

[0017] Heating, temperature measurement and temperature control system in aqueous solution: composed of water tank 1, platinum thermocouple 10, precision temperature control meter 3, triac 4, electric heating coil 9, fan 5, etc. The aqueous solution is in the water tank, and under the action of the electric heating coil 9 fixed outside the water tank 1, the aqueous solution in the water tank is heated. The temperature of the aqueous solution is measured by the p...

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Abstract

The invention relates to the system for measuring the thermoelectricity performances, especially to the system for measuring the performances of the material of the one dimension nano linear array. The method for heating the liquid flow and detecting the temperature in the different place is adopted. The measurement system includes three parts: The system for heating up the aqueous solution, measuring the controlling the temperature; The liquid flow circulation system; The system of the samples and the fixtures. The measurement system is composed of the water tank, platinum thermocouple, precision meter for controlling the temperature, bidirectional thyristor pump, high precision digital electric meter, the samples and fixtures etc. The system carries out the performance test with high accuracy and stable operation.

Description

technical field [0001] The invention relates to a thermoelectric property testing system, in particular to a one-dimensional nanowire array material thermoelectric property testing system. Background technique [0002] The phenomenon of thermoelectricity was discovered in the early nineteenth century. In the past 180 years, the research and application of thermoelectric technology has been greatly developed, but its application field is still very limited. Practice has shown that the key to a breakthrough in the development of thermoelectric technology lies in the substantial improvement of thermoelectric conversion efficiency of thermoelectric materials, that is, the use of materials with high dimensionless figure of merit ZT (Z is the figure of merit, T is temperature) . . Currently the best commercialized 3D thermoelectric material Bi 2(1-x) Sb 2x Te 3 The room temperature of the system ZT≈1 (corresponding to Bi 0.5 Sb 1.5 Te 3 ). Since ...

Claims

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Application Information

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IPC IPC(8): G01N25/20G01N27/04G01R27/02
Inventor 王为张建中郭鹤桐曹辉
Owner TIANJIN UNIV