EFFECT OF RADIATION HEAT-TRANSFER ON THERMAL-DIFFUSIVITY MEASUREMENTS

被引:2
|
作者
ARAKI, N
机构
[1] Faculty of Engineering, Shizuoka University, Hamamatsu
关键词
radiation effect; semitransparent material; stepwise heating method; thermal diffusivity; thermal radiation; transient heat conduction;
D O I
10.1007/BF01133565
中图分类号
O414.1 [热力学];
学科分类号
摘要
Experimental data on thermal conductivity and thermal diffusivity of a semitransparent material generally include an error due to the radiation heat transfer. This error varies in accordance with the experimental conditions such as the temperature level of the sample and the measuring method. In this paper, research on the influence of radiation heat transfer on thermal diffusivity are reviewed, and as an example, the method to correct the radiation component in the apparent thermal diffusivity measured by the stepwise heating technique is presented. The transient heat transfer by simultaneous thermal conduction and radiation in a semitransparent material is analyzed when the front surface is subjected to stepwise heating. The apparent thermal diffusivity, which includes the radiation component, is calculated for various parameters. © 1990 Plenum Publishing Corporation.
引用
收藏
页码:329 / 337
页数:9
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