Concentric Circular Strips Model of the Transient Plane Source-Sensor

被引：19

作者：

Malinaric, Svetozar ^{[1
]}

Dieska, Peter ^{[2
]}

机构：

[1] Constantine Philosopher Univ, Dept Phys, Nitra 94974, Slovakia

[2] Slovak Univ Technol Bratislava, Inst Nucl & Phys Engn, Fac Elect Engn & Informat, Bratislava 81219, Slovakia

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2015年 / 36卷 / 04期

关键词：

Concentric circular strips model; Polymethylmetacrylate; Thermal conductivity; Thermal diffusivity; Transient plane heat source method; THERMAL-CONDUCTIVITY; DIFFUSIVITY;

D O I：

10.1007/s10765-015-1848-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The transient plane heat source (TPS) method is an experimental technique for measurement of the thermal conductivity and diffusivity of solid materials. A complete model based on the concentric circular strips structure of the TPS-sensor has been developed. Rings, circles, and disk models were derived as special cases of the strips, and all four models were compared. Both strips and circles models gave nearly the same results and are recommended for TPS measurement evaluation. Moreover, there was shown that the rings and circles models are incorrect because they lead to an infinite temperature, which can be obviated by using the modified shape functions. In addition, a new design of the electrical bridge was given and the stability of the input heat power was verified by measurements on polymethylmetacrylate.

引用

页码：692 / 700

页数：9

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