Parameters Affecting the Explosion Characteristics of Hybrid Mixtures Arising from the Use of Alternative Energy Sources

Fire Pub Date : 2024-04-14 DOI:10.3390/fire7040139
Matous Helegda, Jiri Pokorny, Iris Helegda, J. Skrinsky, Juraj Sinay
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Abstract

Explosions of hybrid mixtures are an interesting theoretical and experimental problem in explosion sciences, because they combine the physicochemical properties of flammable gases and dusts. A hybrid mixture is composed of at least two substances in two or more states. The influence of the common presence of flammable gas on the explosiveness parameters of the combustible dust itself is proven. In this study, we present the effect of higher initiation temperatures, different initial sources of initiation with different energies, and the effect of the volume of explosion chambers on the explosions of hybrid mixtures arising from the use of alternative energy sources. The experiments were carried out in 20 L and 1.00 m3 explosion chambers (according to EN 14034-1+A1:2011–EN 14034-4+A1:2011). The accredited method of the Energy Research Centre, VSB-TU Ostrava, for tests was used. The goal is to approximate the behaviour of these systems under different initiation conditions so that it is possible to avoid excessively conservative or overly optimistic results, which then affect the determination of explosion parameters for practical use. It was found that the volume of the explosion chambers in combination with the used initiation source has a fundamental influence on the course of the explosion characteristics.
影响因使用替代能源而产生的混合混合物爆炸特性的参数
混合混合物的爆炸是爆炸科学中一个有趣的理论和实验问题,因为它们结合了可燃气体和粉尘的物理化学特性。混合混合物至少由处于两种或两种以上状态的两种物质组成。可燃气体的共同存在对可燃粉尘本身爆炸性参数的影响已得到证实。在本研究中,我们介绍了更高的起爆温度、不同能量的初始起爆源以及爆炸室容积对使用替代能源产生的混合混合物爆炸的影响。实验在 20 升和 1.00 立方米的爆炸室中(根据 EN 14034-1+A1:2011-EN 14034-4+A1:2011 标准)进行。试验采用了 VSB-TU Ostrava 能源研究中心的认可方法。目的是对这些系统在不同起爆条件下的行为进行近似分析,以避免结果过于保守或过于乐观,进而影响爆炸参数的实际确定。结果发现,爆炸室的容积与所使用的起爆源结合在一起,对爆炸特性的过程具有根本性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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