煤的弹筒发热量测量结果不确定度评定

Evaluation of measurement result uncertainty of bomb calorific value in coal

基于热容量标定及弹筒发热量测量数据建立数学模型,从苯甲酸标准热值、苯甲酸质量、点火热、硝酸形成热、冷却校准值、标定重复性等方面分析煤的弹筒发热量测量结果不确定度来源,计算每个来源的标准不确定度分量以及合成标准不确定度,最终得到弹筒发热量测量结果的不确定度。

Based on the thermal capacity calibration and measurement results of bomb calorific value, the mathematical model was established, from aspects such as benzoic acid standard calorific value, benzoic acid weight, ignition heat, nitric acid formation heat, cooling calibration value and calibration repeatability, the uncertainty origin of measurement results of bomb calorific value was analyzed, the standard uncertainty components of every source wcrc calculated, as well as the synthetic standard uncertainty, therefore, the uncertainty of mcasurement results of bomb calorific value could be obtained finally.