METHOD FOR DETERMINING temperature dependence of the thermal conductivity of solid, isotropic conductive materials

摘要

FIELD: physics.;SUBSTANCE: proposed method comprises experimental determination of heat conductivity factor at two hollow cylindrical specimens with different wall thickness. Also, said method incorporates digital solution of stationary nonlinear differential equation of heat conductivity with internal heat sources and allows for temperature dependence of heat conductivity factors and specific resistance. Method may be used for electrically conducting materials that feature distinguished temperature dependence of heat conductivity factors and specific resistance upon temperature, for example, in the range of above 2800 K for graphitised carbon materials. Method may be used in stationary conditions, particularly for high temperatures.;EFFECT: higher accuracy of determination.;2 dwg