摘要
基于保护热板法原型,使用干冰-乙醇和乙二醇混合浴制造不同温度稳定低温环境之间的传热代替传统的加热传热,设计了冰的导热系数测量装置,在较大的温度范围(-70~-30℃)内实现了冰的导热系数稳定可靠的测量.同时充分借助电子式温度计高效测量数据,测得了冰在不同温度下和含有不同杂质情况下的导热系数变化规律,实验结果与参考值符合较好.利用杂质对冰的导热系数的影响规律,可以按需求调节冰的导热系数.
Based on the prototype of guarded hot plate method,an apparatus for measuring thermal conductivity of ice was designed and constructed by using dry-ice bath based on ethylene glycol mixtures to produce heat transfer between stable low-temperature environments at different temperatures,instead of the traditional heating heat transfer.The thermal conductivity of ice was reliably measured over a wide range of temperatures(-70~-30℃).The data were measured efficiently with the help of the electronic thermometer.The thermal conductivity of the ice at different temperatures and in the cases of containing different impurities was measured.The experimental results were in good agreement with the reference values.The different effects of impurities on the thermal conductivity of ice could be used to adjust the performance of ice.
作者
额日和
刘琦
周梦莹
彭薇
袁杨
冉玉晶
陈森
裴艺丽
吴平
Erkhee;LIU Qi;ZHOU Mengying;PENG Wei;YUAN Yang;RAN Yujing;CHEN Sen;PEI Yili;WU Ping(School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China;School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Computer and Communication Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Basic Experimental Center of Natural Science,University of Science and Technology Beijing,Beijing 100083,China)
出处
《物理实验》
2023年第6期41-47,共7页
Physics Experimentation
基金
北京科技大学2021年度本科教育教学改革重点项目(No.JG2021Z05,No.JG2021Z07)。
关键词
导热系数
稳态法
冰
保护热板法
thermal conductivity
steady-state method
ice
guarded hot plate method
