An apparatus for noncontact measurement of thermal conductivity by thermal radiation heating

Measurement of Thermophysical Properties of Ferroelectric Ba(Ti1-x, Zrx)O3Ceramics by Thermal Radiation Calorimetry

“…[6][7][8][9][10][11] As shown in the schematic in Fig. 1, a one-dimensional system in which a disk-shaped specimen (specific heat capacity C p , thermal conductivity , thermal diffusivity a, density , and thickness L) is heated and cooled on one surface by thermal radiation in a vacuum chamber.…”

“…[6][7][8][9][10] For the specific heat capacity measurement, the specimen was heated on both surfaces. For the simultaneous measurement of three thermophysical properties, namely, specific heat capacity, thermal conductivity and thermal diffusivity, the specimen was heated on one surface in order to impose a temperature gradient within it.…”

Measurements of IR Spectra and Thermophysical Properties of Tetragonal Zirconia by Thermal Radiation Calorimetry

“…[1][2][3][4] For the specific heat capacity measurement, the sample was heated on both surfaces. Thermal conductivity was determined from measurements of the temperature gradient in the sample and the radiant power from the sample heated on the back surface.…”

Simultaneous measurement of heat capacity and thermal conductivity by thermal infrared radiation calorimetry

“…So far, the heat capacity measurement has been made under transient state for a disk-shaped specimen [l]. This calorimetry has also been applied to the thermal conductivity measurement under quasi-steady-state [2] as well as under steady-state [3]. The system in which a disk-shaped specimen and a heater are mounted in a vacuum chamber and the specimen is heated on one face by irradiation is considered in this calorimetry.…”

“…Therefore, the 'effective' Spectral emission of colloidal graphite (Acheson 188) The emissivity was obtained at1 5 0 oc.emissi\.ities are constant as long as the configuration and the surface emissvities are the same.' Equation(3) gives the following relation for the quasi-steady state in which the temperature is changed slowly with a constant time rate:Similarly, the temperature difference between the surfaces is given asConsider both heating and cooling modes of the specimen temperature change, Eqs. (3),(4), and (6) 246 -derive the following relation for the specific heat at the same front surface temperature, (TL=TL): where the superscripts (I) refers to the cooling mode.…”