稳态法测量导热系数的实验条件对比研究

doi:10.14139/j.cnki.cn22-1228.2022.05.013

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摘要

在稳态法测量不良导体的导热系数实验中，研究了提高加热盘温度、降低环境温度和关闭散热风扇对实验关键参数、导热系数测量误差和实验时长等影响。研究表明，实验条件对稳态时散热盘的温度Ｔ２和散热盘Ｔ２时的冷却速率均有显著影响，对导热系数的影响主要与影响实验的系统误差有关。通过提高加热盘温度或降低环境温度，能够在测量误差影响不大的前提下有效缩短实验时长；通过关闭散热风扇可以降低面积修正引入的系统误差，但是实验时间延长。

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	陶　鑫
	张敬芳

关键词: 稳态法导热系数误差分析实验条件

Abstract:

In the steady-state method for measuring thermal conductivity coeficient of poor conductors , theinfluence of increasing the temperature of heating plate, decreasing the ambient temperature and closing thecooling fan on key experimental parameters , measurement error and experimental duration were studied.Theresults show that the experimental conditions had significant influence on the steady-state temperature of thecooling plate( T,) and the cooling rate of the cooling plate at 7,,and the systematic error of the experiment wasalso affected.Increasing the temperature of heating plate or decreasing the ambient temperature could effectivelyshorten the experiment duration with little influence on measurement error.Turning off the cooling fan couldreduce the experimental system error introduced by area correction, but the experimental duration wasprolonged.

Key words: steady-state method thermal conductivity coefficient error analysis experimental conditions

出版日期: 2022-10-25 发布日期: 2022-10-25 整期出版日期: 2022-10-25

ZTFLH:

Ｏ５５１．３

引用本文:

陶　鑫, 张敬芳. 稳态法测量导热系数的实验条件对比研究 [J]. 大学物理实验, 2022, 35(5): 58-63.
TAO Xin, ZHANG Jingfang. Effect of Experimental Conditions on Measuring ThermalConductivity Coefficient via a Steady-State Method . Physical Experiment of College, 2022, 35(5): 58-63.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.05.013 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I5/58

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