Uncertainty Evaluation of Thermal Conductivity (Calorimeter) of Shaped Insulating Products

The factor and calculation of the uncertainty evaluation of thermal conductivity (calorimeter) of shaped insulating products were introduced, the degree of freedom of every uncertainty component were also calculated and then got the synthesized uncertainty and expanded uncertainty. At last the report of uncertainty of thermal conductivity was λ=0.197 W/(m·K), expanded uncertainty U=0.005 W/(m·K), coverage factor k=2.