A DILATOMETRIC METHOD TO MEASURE THE THERMAL-DIFFUSIVITY OF NONMETALLIC LIQUIDS

被引：1

作者：

OMINI, M

SPARAVIGNA, A

STRIGAZZI, A

机构：

[1] Dipartimento di Fisica, Politecnico di Torino, Torino, 1-10129

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1994年 / 15卷 / 02期

关键词：

DILATOMETRY; THERMAL DIFFUSIVITY;

D O I：

10.1007/BF01441583

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new method to measure the thermal diffusivity of liquids is presented. It requires determination of the time dependence of the thermal expansion of the liquid when it is subjected to a heat source at the top of the cell containing the liquid. The high accuracy of the method (about 3%) is due to an essential reduction of convective currents and also to the absence of temperature detectors, which generally introduce unwanted perturbations on the thermal field.

引用

页码：215 / 227

页数：13

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