An apparatus for specific heat capacity measurement by thermal radiation calorimetry

被引：9

作者：

Morimoto, K ^{[1
]}

Sawai, S ^{[1
]}

Hisano, K ^{[1
]}

机构：

[1] Natl Def Acad, Dept Math & Phys, Yokosuka, Kanagawa 2398686, Japan

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1999年 / 20卷 / 02期

关键词：

calorimetry; emissivity; high temperature specific heat capacity; thermal radiation;

D O I：

10.1023/A:1022629709942

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Specific heat capacity measurements of disk-shaped specimens have been performed with an apparatus based on thermal radiation calorimetry. The specimen surfaces were irradiated by two flat heaters in a vacuum chamber so that homogeneous temperature distribution within an insulating specimen was achieved. Homogeneity was confirmed by computer simulation based on the control-volume method. The Values of specific heat capacity were obtained by measurement of the specimen temperature, the time rate change of the specimen temperature, and the radiant power from the heater for heating and cooling modes. The specific heat capacities of Ni metal, Al2O3 ceramic, MgO ceramic, and AlN ceramic were measured in the temperature range from 220 to 500 degrees C to confirm the validity of this calorimeter. The relative error involved in the measured values was estimated to be +/-3%.

引用

页码：709 / 719

页数：11