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.
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页码：215 / 227
页数：13
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