SIMULTANEOUS ESTIMATION OF THERMAL PROPERTIES BY A NON-LINEAR LEAST SQUARES METHOD.

A new method, which utilizes a non-linear least squares method, is proposed to estimate simultaneously the thermal conductivity, the heat capacity and their temperature coefficients. This measurement principle is further expanded so as to measure the heat of chemical reaction. In the measurement, a hollow cylinder is heated from both the central axis and the outer surface. The effective thermal conductivity and the heat capacity of a packed bed of glass and aluminum oxide were measured from 300 K to 700 K at a heating rate of 2-3 K/min. The endothermic quantity of transition (KNO//3) and dehydration (CaC//2O//4 multiplied by (times) H//2O) were also measured at a heating rate of 2 K/min. The results agree well with those determined by other measuring techniques.