用瞬时法测定液体导热系数

CIESC Journal

用瞬时法测定液体导热系数

王琮玉,郭藏生,杨孟林,马录,卢心中

西北大学热化学研究室 ,西北大学热化学研究室 ,西北大学热化学研究室 ,西北大学热化学研究室 ,西北大学热化学研究室

出版日期:1984-09-25 发布日期:1984-09-25

Measuring Thermal Conductivity of Liquids by Transient Method

Wang Congyu, Guo Cangsheng, Yang Menlin, Ma Lu and Lu Xinzhong Thermochemical Laboratory, Northwest University

Online:1984-09-25 Published:1984-09-25

摘要/Abstract

摘要： 以珠状热敏电阻为加热元件,建立了用瞬时法测定液体导热系数的装置,在25℃下用乙二醇等7个标准样品,对该装置进行了标定,平均偏差为2%.为了核实装置和所得关系式的可靠性,又测定了13个已知导热系数的样品,多数偏差在2%以内,最大偏差为5%.单次测量的精度为0.2%.本文叙述了这一方法的原理,并对实验结果进行了讨论.

Abstract: Using a small bead-in-glass thermistor probe as a heating element, an apparatus was developed for measuring thermal conductivity of liquids by the transient method. The apparatus was calibrated by using seven standard substances at 25℃, with an average deviation of measurements less than 2%. To check the reliability of this apparatus and the correlation proposed, the thermal conductivities of thirteen known liquids were determined. The experimental results showed that all deviations were within 2% except one which reached 5%. The precision of the apparatus is 0.2%. This paper expounds the principle of the proposed method and discusses the experimental results.

王琮玉,郭藏生,杨孟林,马录,卢心中. 用瞬时法测定液体导热系数 [J]. CIESC Journal.

Wang Congyu, Guo Cangsheng, Yang Menlin, Ma Lu and Lu Xinzhong Thermochemical Laboratory, Northwest University. Measuring Thermal Conductivity of Liquids by Transient Method[J]. .