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Device for measuring thermoelectric performance in wide temperature range

A measuring device, thermoelectric technology, applied in the direction of measuring device, measuring electricity, measuring electrical variables, etc., can solve problems such as inconsistency of system errors, sudden changes in performance curves, inconsistent measurement principles, etc., to ensure the consistency of system errors, guarantee Accuracy, effects of mutation avoidance

Inactive Publication Date: 2006-09-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a measurement method is not only inconvenient, but also because the system errors of the two instruments are inconsistent and the measurement principles are also inconsistent, the obtained performance curve has a sudden change at room temperature.

Method used

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  • Device for measuring thermoelectric performance in wide temperature range

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Embodiment Construction

[0010] Specific embodiments of the present invention will be described in detail with reference to the above-mentioned drawings. figure 1 A thermoelectric performance measurement device with a wide temperature range is given, including a sealed vacuum chamber 2; A liquid nitrogen chamber 7 for placing liquid nitrogen. The lower end of the inlet pipe 4 communicates with the liquid nitrogen chamber 7; In order to ensure the tightness of the vacuum chamber 2, the inlet pipe 4 should be in contact with the side wall of the vacuum chamber 2 without gaps. The lower end of the outlet pipe 6 communicates with the liquid nitrogen chamber 7, and the upper end 3 of the outlet pipe 6 passes through the side wall of the vacuum chamber 2 and is located outside the vacuum chamber 2. Also in order to ensure the tightness of the vacuum chamber 2, the outlet pipe 6 should be in contact with the side wall of the vacuum chamber 2 without gaps. A workbench 5 is placed on the liquid nitrogen cha...

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Abstract

This invention relates to a device for measuring thermoelectric performance in wide temperature range, which comprises a measuring platform (5); a sealed vacuum chamber (2) with a vacuumizing device, a heater (9) and a liquid nitrogen cavity (7) connected to the lower ends of an inlet pipe (4) and an outlet pipe (6). Wherein. Both upper ends of (4) and (6) are outside of the chamber (2); there is an insulating layer (8) between (5) and (7). This invention can measure property continually.

Description

technical field [0001] The invention relates to a device capable of continuously measuring thermoelectric properties of materials in a wide temperature range. Background technique [0002] Thermoelectric materials, also known as thermoelectric materials, are materials that can directly convert heat and electricity. When there is a temperature difference between the two ends of the material, there is a potential output at both ends; when the material is energized, heat is transferred from one end of the material to the other end; therefore, the thermoelectric material can be used for power generation and cooling. The parameters that mark the performance of thermoelectric materials include Seebeck coefficient, electrical conductivity and thermal conductivity. The Seebeck coefficient is the thermoelectric potential formed by unit temperature difference. [0003] When a thermoelectric material is working, one end is at a high temperature, the other end is at a low temperature,...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01N33/00G01R31/00
Inventor 倪华良赵新兵朱铁军涂江平
Owner ZHEJIANG UNIV