Thermal Diffusivity Measurement of Glass at High Temperature by Using Flash Method

被引：6
|
作者：
Kabayabaya, Thomas [1 ]
Yu, Fan [1 ]
Zhang, Xinxin [1 ]
机构：
[1] Univ Sci & Technol, Dept Energy Engn, Sch Mech Engn, Beijing 100083, Peoples R China
来源：
JOURNAL OF THERMAL SCIENCE | 2004年 / 13卷 / 01期
基金：
中国国家自然科学基金;
关键词：
thermal diffusivity; measurement techniques; thermal conductivity; radiative heat transfer; phonic diffusivity; heat conduction;
D O I：
10.1007/s11630-004-0015-6
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A measurement of the thermal diffusivity of a semi-transparent material (glass) by means of the "Flash Method" is investigated in the present work. By taking into account the heat losses on the two faces of the sample, and using a new experimental technique design, an improvement of the determination of the thermal diffusivity of the semi-transparent material (glass) at high temperature is realized. The experimental design presented here is an original technical concept that enables a significant reduction in heat loss during the experiments. A very simple model based on the quadrupole method is used to theoretically determine the thermal diffusivity of the semitransparent material by taking into account both conduction and radiation. Theoretical results clarify the effect of the absorption coefficient and the thickness of the sample on the heat transfer in the semi-transparent medium.
引用
收藏
页码：91 / 96
页数：6
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