التفاصيل البيبلوغرافية
| العنوان: |
Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel. |
| المؤلفون: |
Sulaiman, Siti Zubaidah, Khan, Nur Aqidah Muhammad Harinder, Izhab, Izirwan, Md. Shaarani, Shalyda, Mudalip, Siti Kholijah Abdul, Man, Rohaida Che, Arshad, Zatul Iffah Mohd, Kasmani, Rafiziana Md., Sulaiman, Sarina |
| المصدر: |
Chemical Engineering Communications; 2021, Vol. 208 Issue 4, p583-591, 9p |
| مصطلحات موضوعية: |
BIOGAS, FLAMMABLE gases, ELECTRIC spark, THERMAL instability, EXPLOSIONS, CARBON dioxide |
| مستخلص: |
The understanding of biogas explosion characteristics is needed to describe the severity of the explosion. Biogas is a flammable gas and will explode when ignited. This study reports the experimental results on biogas explosion characteristics in a standard 20-L spherical vessel under quiescent conditions using electric spark (10 J) as an ignition source. Computational Fluid Dynamic (CFD) code FLame ACcelaration Simulator (FLACs) was used to simulate the biogas explosion based on the experimental case study. The dependence of explosion characteristics such as explosion pressure (Pmax), rate of pressure rise (dP/dt), and deflagration index (KG), on biogas concentration and carbon dioxide, CO2 composition is demonstrated. The data allow for the evaluation of the potential severity of biogas explosion, which in turn helps engineers design the explosion mitigation and prevention device related to this gas. The experimental data reported from this study concluded that Pmax = 8–8.50 bar, the dP/dt = 100–400 bar/ms and the KG = 32.7–121 bar m/ms were recorded at equivalence ratio, (ER) = 1.2 with CO2 composition in the biogas = 30% vol/vol. It was found that the severity of the biogas explosion increased proportionally with the biogas concentration. On the contrary, the explosive intensity was weakened by increasing the CO2 concentration due to the physical effects of CO2 and thermal instability. This study also recorded that the biogas explosion was categorized under hazard level = St-3 indicating a catastrophic explosion. These data are important for preventing and mitigating the biogas explosion. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
