煤的弹筒发热量不确定度分析与评定  

Uncertainty Analysis and Evaluation of Bomb Calorific Value of Coal

作　　者：陈娟[1] 闫涛 刘喆 张智芳[1] 慕苗[1] 马向荣[1] 薛成虎[1] CHEN Juan;YAN Tao;LIU Zhe;ZHANG Zhi-fang;MU Miao;MA Xiang-rong;XUE Cheng-hu(School of Chemistry and Chemical Engineering,Yulin University,Shaanxi Yulin 719000,China;National Coal and Salt Chemical Product Quality Supervision and Inspection Center(Yulin),Shaanxi Yulin 719000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]国家煤及盐化工产品质量监督检验中心(榆林),陕西榆林719000

出　　处：《当代化工》2020年第3期619-622,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金项目(21763030,51762042);陕西省教育厅重点实验室科研计划项目(18JS121,19JS073);国家煤及盐化工产品质量监督检验中心(榆林)开放基金(2019YLMYZX-003,2019YLMYZX-002);陕西省科技资源开放共享平台项目(2019PT-18);陕西省科技厅项目(2018GY-086).

摘　　要：依据标准JJF 1059.1-2012《测量不确定度评定与表示》及测定煤弹筒发热量的数学模型,解析了弹筒发热量的不确定度主要来源,并对每个不确定分量进行评定。结果表明:煤的弹筒发热量合成标准不确定度为0.032 MJ/kg,扩展不确定度为0.064 MJ/kg。弹筒发热量相对合成标准不确定度分量中,热容量标定相对不确定度(urel(E)=8.07×10-4)略微偏大,对最终结果准确程度影响略高。Based on the standard JJF1059.1-2012"Evaluation and expression of uncertainty in measurement"and the mathematical model for measuring the bomb calorific value of coal,the main sources of uncertainty of coal bomb calorific value were analyzed,and each uncertainty component was evaluated.The result showed that the combined standard uncertainty of bomb calorific value was 0.032 MJ/kg and expanded uncertainty was 0.064 MJ/kg.The relative uncertainty of calorific capacity calibration(urel(E)=8.07×10-4)was slightly larger than that other uncertainty component,which had a slightly higher impact on the accuracy of final results.

关 键 词：煤 弹筒发热量 不确定度 扩展不确定度 

分 类 号：TQ533[化学工程—煤化学工程]