用瞬变热丝仪测量液体导热系数

The Measurement of the Thermal Conductivity for Liquid with the Transient Hot-Wire Instument

本文介绍了瞬变热丝仪的原理和构造,到目前为止这种仪器是测量液体导热系数最精确的仪器。本文还报导了正庚烷—异辛烷混合物导热系数的测量结果,结出了导热系数与温度、压力的关联系数。

The paper introduces the principle and construction of the transient hot-wire instrument, which has been used in measurement of the thermal conductivity for liquid with the most exact result. Also, the result for the measurement of the thermal conductivity of the mixture of n-heptane and isooctane is reported. And,the correlations of thermal conductivity with pressure and tempreature are presented.