THERMOPHYSICAL PROPERTY MEASURING APPARATUS AND THERMOPHYSICAL PROPERTY MEASURING METHOD

摘要

To provide a thermophysical property measuring apparatus and thermophysical property measuring method capable of conveniently obtaining a thermophysical property value such as accurate thermoelectric power and thermal conductivity regardless of the nature of a sample to be measured.SOLUTION: A thermophysical property measuring apparatus 50 includes current applying means for selectively applying a DC current of positive or negative polarity or an AC current with the same effective value of the DC current to an object to be measured with no temperature difference at both ends contained in the measuring unit 55, and temperature measuring means disposed at a measurement point on a central position or shifted by any distance from the central position of the object to be measured for measuring the temperature of the object to be measured, and a calculation unit 54 for calculating the Thomson coefficient of the object to be measured by calculating the ratio of a first temperature change at the measurement point shifted by any distance from the central portion measured when applying a different DC current of polarity at both ends by the current applying means, and a second temperature change in the central portion measured when the AC current is applied by the current applying means.SELECTED DRAWING: Figure 1