Accurate and simultaneous measurement of the thermal conductivity and thermal diffusivity of liquids using the transient hot-wire method

摘要

A procedure for simultaneously obtaining values of the thermal conductivity and thermal diffusivity of liquids by the transient hot-wire (THW) method is described. The practical model of the THW method is described by a transfer function having a feedback loop. All transient data obtained by integration during a finite interval were assigned to a particular instantaneous time. The concept of the reflectivity of a thermal wave at a container wall was also investigated.