{"title":"铰链式容器中氢气浓度对H2/空气通风爆炸火焰传播和压力演化的影响","authors":"Zelong Wu , Yanzhen Zhuang , Jin Guo","doi":"10.1016/j.ijhydene.2025.04.227","DOIUrl":null,"url":null,"abstract":"<div><div>This paper investigates the pressure evolution and flame propagation behavior during the vented explosion of H<sub>2</sub>/air mixtures with hydrogen concentrations(<em>C</em>) ranging from 9 % to 27 %. The experiments were conducted in a 1 m<sup>3</sup> vessel equipped with a vent covered by a 4-mm thick hinged aluminum panel. The results reveal three distinct internal pressure peaks during the vented explosion: P<sub>1</sub> (the first pressure peak), P<sub>2</sub> (the second pressure peak), and P<sub>3</sub> (the third pressure peak). When <em>C</em> exceeds 12 %, P<sub>2</sub> replaces P<sub>3</sub> as the highest-pressure peak within the vessel. As <em>C</em> increases from 9 % to 27 %, P<sub>1</sub> becomes less distinguishable in the pressure profiles. The maximum pressure formula proposed by Cubbage and Marshall accurately predicts the maximum explosion overpressure (P<sub>max</sub>) within the vessel. In the external pressure profiles, a maximum external pressure peak (P<sub>ext</sub>) is observed. As <em>C</em> increases, P<sub>ext</sub> rises from 4.8 kPa at <em>C</em> = 15 % to 49.9 kPa at <em>C</em> = 27 %. Additionally, as <em>C</em> increases, the maximum external flame speed increases from 170 m/s at <em>C</em> = 21 % to 236 m/s at <em>C</em> = 27 %. When <em>C</em> increases from 18 % to 27 %, the maximum external flame length(<em>L</em><sub>max</sub>)increases from 1.5 m to 2.0 m. During the inertia-free venting experiments, the fireball, synchronized with the external explosion, assumes a mushroom shape. When hinged panels are used, the fireball becomes progressively flatter at the vent as <em>C</em> decreases.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":""},"PeriodicalIF":8.3000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of hydrogen concentration on flame propagation and pressure evolution during vented H2/air explosions in a vessel with a hinged panel\",\"authors\":\"Zelong Wu , Yanzhen Zhuang , Jin Guo\",\"doi\":\"10.1016/j.ijhydene.2025.04.227\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This paper investigates the pressure evolution and flame propagation behavior during the vented explosion of H<sub>2</sub>/air mixtures with hydrogen concentrations(<em>C</em>) ranging from 9 % to 27 %. The experiments were conducted in a 1 m<sup>3</sup> vessel equipped with a vent covered by a 4-mm thick hinged aluminum panel. The results reveal three distinct internal pressure peaks during the vented explosion: P<sub>1</sub> (the first pressure peak), P<sub>2</sub> (the second pressure peak), and P<sub>3</sub> (the third pressure peak). When <em>C</em> exceeds 12 %, P<sub>2</sub> replaces P<sub>3</sub> as the highest-pressure peak within the vessel. As <em>C</em> increases from 9 % to 27 %, P<sub>1</sub> becomes less distinguishable in the pressure profiles. The maximum pressure formula proposed by Cubbage and Marshall accurately predicts the maximum explosion overpressure (P<sub>max</sub>) within the vessel. In the external pressure profiles, a maximum external pressure peak (P<sub>ext</sub>) is observed. As <em>C</em> increases, P<sub>ext</sub> rises from 4.8 kPa at <em>C</em> = 15 % to 49.9 kPa at <em>C</em> = 27 %. Additionally, as <em>C</em> increases, the maximum external flame speed increases from 170 m/s at <em>C</em> = 21 % to 236 m/s at <em>C</em> = 27 %. When <em>C</em> increases from 18 % to 27 %, the maximum external flame length(<em>L</em><sub>max</sub>)increases from 1.5 m to 2.0 m. During the inertia-free venting experiments, the fireball, synchronized with the external explosion, assumes a mushroom shape. When hinged panels are used, the fireball becomes progressively flatter at the vent as <em>C</em> decreases.</div></div>\",\"PeriodicalId\":337,\"journal\":{\"name\":\"International Journal of Hydrogen Energy\",\"volume\":\"128 \",\"pages\":\"\"},\"PeriodicalIF\":8.3000,\"publicationDate\":\"2025-04-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Hydrogen Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0360319925018956\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319925018956","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effects of hydrogen concentration on flame propagation and pressure evolution during vented H2/air explosions in a vessel with a hinged panel
This paper investigates the pressure evolution and flame propagation behavior during the vented explosion of H2/air mixtures with hydrogen concentrations(C) ranging from 9 % to 27 %. The experiments were conducted in a 1 m3 vessel equipped with a vent covered by a 4-mm thick hinged aluminum panel. The results reveal three distinct internal pressure peaks during the vented explosion: P1 (the first pressure peak), P2 (the second pressure peak), and P3 (the third pressure peak). When C exceeds 12 %, P2 replaces P3 as the highest-pressure peak within the vessel. As C increases from 9 % to 27 %, P1 becomes less distinguishable in the pressure profiles. The maximum pressure formula proposed by Cubbage and Marshall accurately predicts the maximum explosion overpressure (Pmax) within the vessel. In the external pressure profiles, a maximum external pressure peak (Pext) is observed. As C increases, Pext rises from 4.8 kPa at C = 15 % to 49.9 kPa at C = 27 %. Additionally, as C increases, the maximum external flame speed increases from 170 m/s at C = 21 % to 236 m/s at C = 27 %. When C increases from 18 % to 27 %, the maximum external flame length(Lmax)increases from 1.5 m to 2.0 m. During the inertia-free venting experiments, the fireball, synchronized with the external explosion, assumes a mushroom shape. When hinged panels are used, the fireball becomes progressively flatter at the vent as C decreases.
期刊介绍:
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.