巧妙利用间接稳态法测量冰的导热系数

doi:10.14139/i.cnki.cn22-1228.2024.06.007

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摘要

基于大学物理实验中常用的间接稳态法,巧妙利用冰水混合物的０ ℃作为低温热源,设计一种高于环境温度４５~６５ ℃下测量纯冰和加入不同食盐杂质的导热系数实验装置,得到纯冰的导热系数基本保持不变,加入 NaCl 杂质后,其导热系数比纯冰导热系数低,且杂质浓度越大,导热系数越小。装置简单易实现、操作简单可重复、测量结果较准确。该研究也是?理工科类大学物理实验课程教学基本要求(２０２３版)?中“热导率的测量”实验的拓展,达到Ｃ类要求,对促进物理实验教学具有一定研究意义。

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	崔秀花
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关键词: 导热系数冰间接稳态法测量装置食盐杂质

Abstract:

An experimental device is designed to measure the thermal eonductivity of pure ice and salt impurit based on ingenious indirect steady-stated method. The results show that the thermal conductivity of pure iceremains unchanged at this temperature , while thermal eonduclivity of ice added NaCl impurity is lower than that of pure ice. Additionally the thermal conductivity of ice is decrease with the increasing of NaCl impurit concentration, The principle of the device is simple and easy to implement, the operation is simple ancrepecat able, and the measurement results are accurate, This study is also an expansion of the experimen* Measurement of thermal conductivity" in “ Basie Requirements for Physies Experiment Course Teaching in Seience and Engineering Universities ( 2023 edition)" ,which reached to the requirements of Class C ,and hascertain research significance for promoting physics experiment teaching.

Key words: thermal conductivity ice indirect steady-state method measuring device salt impurity

出版日期: 2024-12-25 发布日期: 2024-12-25 整期出版日期: 2024-12-25

ZTFLH:

O 4-34

引用本文:

崔秀花 , 穆保霞, 井　群, 吉　旭. 巧妙利用间接稳态法测量冰的导热系数 [J]. 大学物理实验, 2024, 37(6): 38-44.
CUI Xiuhua, MU Baoxia , JING Oun , J Xu. Measurement Thermal Conductivity of Ice Based on Ingenious Indirect Steady-State Method . Physical Experiment of College, 2024, 37(6): 38-44.

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https://dawushiyan.jlict.edu.cn/CN/10.14139/i.cnki.cn22-1228.2024.06.007 或 https://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I6/38

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