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An in-depth analysis of some methodical aspects of applying pseudo-adiabatic calorimetry
Thermochimica Acta ( IF 3.1 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.tca.2019.178466
Arcady Kossoy

Abstract The Accelerating Rate Calorimeter (ARC) - the first representative of the family of pseudo-adiabatic calorimeters - was designed for assessing reactive hazards of chemical processes. Over time the ARC and similar instruments have found much wider applications such as testing of reactive substances, study of reaction kinetics, design of the emergency relief systems. In all these cases precise knowledge about the current state of the sample is required. There are numerous publications regarding the methodical aspects of pseudo-adiabatic calorimetry but many problems are still waiting for the solution. The aim of this paper is to consider in detail the following serious problems: non-uniformity of the system "sample + bomb"; absence of equilibrium between sample and bomb; variability of thermal inertia; uncertainty of the state of reacting system at the onset. The results presented here demonstrate that in many cases the basic assumptions used for interpretation of adiabatic data can be violated and due attention should be paid to the conditions of an experiment that allow it to remain within the applicability limits of the method.

中文翻译:

对应用伪绝热量热法的一些有条理的方面的深入分析

摘要 加速量热计 (ARC) - 伪绝热量热计系列的第一个代表 - 旨在评估化学过程的反应危害。随着时间的推移,ARC 和类似仪器已经发现了更广泛的应用,例如反应性物质的测试、反应动力学的研究、紧急救援系统的设计。在所有这些情况下,都需要准确了解样品的当前状态。有许多关于伪绝热量热法的方法方面的出版物,但仍有许多问题有待解决。本文的目的是详细考虑以下严重问题:“样本+炸弹”系统的非均匀性;样品和炸弹之间缺乏平衡;热惯性的可变性;开始时反应系统状态的不确定性。此处显示的结果表明,在许多情况下,用于解释绝热数据的基本假设可能会被违反,因此应适当注意实验条件,使其保持在该方法的适用范围内。
更新日期:2020-01-01
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