Determination of Measurement Uncertainties in Adiabatic Hot-Storage Experiments for Reactive Dusts

Determination of Measurement Uncertainties in Adiabatic Hot-Storage Experiments for Reactive Dusts
复制标题

活性粉尘绝热热储存实验中测量不确定度的确定

DOI:
10.1002/ceat.201300068
复制
发表时间:
2013
影响因子:
2.1
通讯作者:
Ulrich
Ulrich
中科院分区:
工程技术4区
文献类型:
--
作者:
Schmidt;Christoph;Krause;Ulrich

文献摘要

参考文献

被引文献

相似文献

固体散状材料自燃的形式动力学理论上可以从一个单一的绝热热储存试验中推导出来。问题是如何量化测量中的不确定性,以及这些不确定性如何影响随后的预测结果。对褐煤、黑煤、软木粉尘、聚合物粉尘和涂蜡硅酸的样品进行绝热和等周热储篮测试。在绝热试验中,系统地改变烘箱的起始温度和温度控制,以研究绝热试验的不确定度裕度。集总反应的表观活化能和指前因子来自绝热试验,包括平均值和标准差,并与根据欧洲标准EN 15188进行的等周实验进行比较。可以表明,通过对绝热烘箱进行精确的温度控制,并结合对最大温升速率的自动计算,表观活化能的不确定性可以被限制在10%以下。
The formal kinetics of self‐ignition of solid bulk materials theoretically can be derived from just one single adiabatic hot‐storage test. The question arises how uncertainties in the measurements can be quantified and how these uncertainties affect the results of the subsequent predictions. Adiabatic and isoperibolic hot‐storage basket tests were performed for samples of lignite coal, black coal, cork dust, a polymer dust, and wax‐coated silicid acid. In the adiabatic experiments, the starting temperature and the temperature control of the oven were varied systematically to study the uncertainty margin of adiabatic tests. The apparent activation energy and the pre‐exponential factor of the lumped reaction were derived from the adiabatic tests including average values and standard deviations and compared to isoperibolic experiments performed according to the European standard EN 15188. It could be shown that with a precise temperature control of the adiabatic oven combined with an automated computation of the maximum rate of temperature rise the uncertainty of the apparent activation energy can be limited to less than 10 %.
DOI: --
发表时间: 1954
期刊:
影响因子: --
作者:
W. Raskin;A. F. Robertson
通讯作者: A. F. Robertson
DOI: --
发表时间: 1987
期刊:
影响因子: --
作者:
T. Grewer
通讯作者: T. Grewer
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
G. Krause;W. Wildner
通讯作者: W. Wildner