巧妙利用间接稳态法测量冰的导热系数
Measurement Thermal Conductivity of Ice Based on Ingenious Indirect Steady-State Method
崔秀花 1穆保霞 1井群 1吉旭1
作者信息
- 1. 新疆大学 物理科学与技术学院,新疆 乌鲁木齐 830000
- 折叠
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.
Abstract
An experimental device is designed to measure the thermal conductivity of pure ice and salt impurity based on ingenious indirect steady-stated method.The results show that the thermal conductivity of pure ice remains unchanged at this temperature,while thermal conductivity 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 impurity concentration.The principle of the device is simple and easy to implement,the operation is simple and repeatable,and the measurement results are accurate.This study is also an expansion of the experiment"Measurement of thermal conductivity"in"Basic Requirements for Physics Experiment Course Teaching in Science and Engineering Universities(2023 edition)",which reached to the requirements of Class C,and has certain research significance for promoting physics experiment teaching.
关键词
导热系数/冰/间接稳态法/测量装置/食盐杂质Key words
thermal conductivity/ice/indirect steady-state method/measuring device/salt impurity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据