介绍了定型隔热制品导热系数(水流量平板法)不确定度的要素构成及各类不确定度分量的计算方法, 并计算了各不确定度分量的自由度, 得出合成不确定度和扩展不确定度。得到不确定度报告为: 导热系数检测结果λ=0.197 W/(m·K), 扩展不确定度U=0.005 W/(m·K), 包含因子k=2。

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.