Analysis of propagation characteristics of hydrogen flame in shock tube in integrated energy system

IF 1.1 4区工程技术 Q4 THERMODYNAMICS

Thermal Science Pub Date : 2023-01-01 DOI:10.2298/tsci2302059z

B. Zhao

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Abstract

In order to study the explosion law of hydrogen and air premixed gas in the pipe-line, the author proposes an analysis of the propagation characteristics of hydrogen in the shock tube in the integrated energy system. Use a square transparent pipe with a size of 150 mm?150 mm?1000 mm, the shape of the explosion flame, the propagation velocity and the pressure change with the hydrogen volume fraction from 10-40% were observed through experiments. Flame spread and pressure were recorded and measured by high speed cameras and pressure sensors, respectively. Experimental results show that the explosion flame characteristics and pressure changes are greatly affected by the hydrogen volume fraction. With the increase of hydrogen volume fraction, the maximum velocity and maximum value of flame in pipe increase significantly. The maximum flame propagation speed is increased from 18.3-304.2 m/s, and the propagation time is shortened from 123.5-10.5 ms. The pressure peak increased from 2.95-34.06 kPa. The analysis of the propagating characteristics of the hydrogen flame in the shock tube in the integrated energy system can well reflect the intensity of the hydrogen explosion. Do not use abbreviations and acronyms in the abstract.

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综合能源系统中氢火焰激波管内传播特性分析

为了研究氢气与空气预混气体在管道内的爆炸规律，作者提出了综合能源系统中氢气在激波管内的传播特性分析。使用150mm的方形透明管?150毫米吗?在1000 mm时，通过实验观察了爆炸火焰的形状、传播速度和压力随氢气体积分数在10 ~ 40%之间的变化。火焰蔓延和压力分别由高速摄像机和压力传感器记录和测量。实验结果表明，氢气体积分数对爆炸火焰特性和压力变化有较大影响。随着氢气体积分数的增加，管道内火焰的最大速度和最大值显著增大。火焰的最大传播速度由18.3 ~ 304.2 m/s提高，传播时间由123.5 ~ 10.5 ms缩短。压力峰值从2.95 ~ 34.06 kPa增加。对综合能量系统中激波管内氢火焰的传播特性进行分析，可以很好地反映氢爆炸的强度。摘要不要使用缩略语和首字母缩略词。

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来源期刊

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.