Title :
Simultaneous measurement of heat capacity and thermal conductivity by thermal infrared radiation calorimetry
Author :
Hisano, K. ; Sawai, S. ; Morimoto, K.
Author_Institution :
Dept. of Math. & Phys., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Instrumentation based on thermal radiation calorimetry (TRAC) is described. The system in which a disk-shaped specimen and a flat heater are mounted in a vacuum chamber is used. A theoretical formulation of the simultaneous measurement under quasi-steady state is described in detail. The specimens whose surfaces were blackened were used in the measurement. The hemispherical emissivity of the blackening substance was derived from mid- and far-infrared emission spectra. The validity of the calorimetry was confirmed from the results obtained by use of a Pyroceram 9606 specimen
Keywords :
calorimetry; specific heat; thermal conductivity measurement; Pyroceram 9606 specimen; blackening substance; disk-shaped specimen; flat heater; heat capacity measurement; hemispherical emissivity; quasi-steady state; thermal conductivity measurement; thermal radiation calorimetry; vacuum chamber; Calorimetry; Conductivity measurement; Equations; Infrared heating; Mathematics; Temperature; Thermal conductivity; Time measurement; Vacuum systems; Water heating;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768271
