Effect of N2 and CO2 on explosion behavior of hydrogen-air mixtures in non-premixed state
Source abstract
Abstract
In this paper, the suppression effects of non-premixed inert gas (N2, CO2) on hydrogen-air explosion behaviors are experimentally studied. The effects of N2 and CO2 addition on flame propagation, explosion pressure and flame length are analyzed. The results show that N2 and CO2 can effectively reduce the explosion hazard in non-premixed state. The mixing process of non-premixed gases leads to the development of turbulent flame, but the suppression of inert gas on explosion exceeds the promotion of turbulent flame. Under the action of N2 and CO2, the energy of the flame decreases, and the front contour becomes blurred. When the fuel zone is only set at the ignition end, with the suppression of N2 and CO2, the maximum explosion pressure is reduced by 35.1% and 50.6%, respectively. It is worth noting that the high-frequency periodic oscillation and pressure soaring appear in the pressure histories, which are attributed to the rapid phase transition of water. Furthermore, the two inert gases can significantly reduce the chemical reaction rate and heat release rate during the explosion, which is reflected in the decrease of the maximum flame length. It is found that N2 and CO2 have different explosion suppression effects and mechanisms, but CO2 has better suppression performance on hydrogen-air explosion.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Combustion and Detonation Processes · Combustion and flame dynamics · Fire dynamics and safety research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
Show source-provided references
1. Estimating the effect of water fog and nitrogen dilution upon the burning velocity of hydrogen deflagrations from experimental test data10.1016/j.ijhydene.2013.03.063 ↗
2. Dehydrogenation of polycyclic naphthenes on a Pt/C catalyst for hydrogen storage in liquid organic hydrogen carriers, Fuel Process
3. Effect of N2 and CO2 on explosion behavior of syngas/air mixtures in a closed duct10.1016/j.ijhydene.2019.09.053 ↗
4. Thermal suppression effects of diluent gas on the deflagration behavior of H2–air mixtures
5. Effects of nitrogen and carbon dioxide on hydrogen explosion behaviors near suppression limit
6. Thermal and kinetics mechanism of explosion mitigation of methane-air mixture by N2/CO2 in a closed compartment10.1016/j.fuel.2019.115747 ↗
7. Suppressions of gasoline-air mixture explosion by non-premixed nitrogen in a closed tunnel10.1016/j.jlp.2014.07.012 ↗
8. Numerical investigation of hydrogen detonation suppression with inert particle in pipelines10.1016/j.ijhydene.2016.09.170 ↗
9. Effect of hydrogen-air mixture diluted with argon/nitrogen/carbon dioxide on combustion processes in confined space10.1016/j.ijhydene.2018.06.038 ↗
10. Hydrogen cloud explosion evaluation under inert gas atmosphere10.1016/j.fuproc.2018.08.015 ↗
11. Inerting effect of carbon dioxide on confined hydrogen explosion10.1016/j.ijhydene.2019.04.181 ↗
12. A study of the effects of diluents on near-limit H2-air flames in microgravity at normal and reduced pressures10.1016/j.combustflame.2007.06.013 ↗
13. Explosion behavior predictions of syngas/air mixtures with dilutions at elevated pressures: explosion and intrinsic flame instability parameters10.1016/j.fuel.2019.115724 ↗
14. A numerical modelling of an influence of CH4, N2, CO2 and steam on a laminar burning velocity of hydrogen in air10.1016/j.jlp.2009.12.002 ↗
15. Flame propagation of premixed liquefied petroleum gas explosion in a tube10.1016/j.applthermaleng.2016.11.040 ↗
16. Modeling pressure effects on the turbulent burning velocity for lean hydrogen/air premixed combustion10.1016/j.proci.2020.06.162 ↗
17. Experimental study on the multi-level suppression of N2 and CO2 on hydrogen-air explosion10.1016/j.psep.2022.11.069 ↗
18. Experimental study on explosion characteristics of premixed syngas/air mixture with different ignition positions and opening ratios10.1016/j.fuel.2020.118426 ↗
19. Experimental studies on the explosion behaviors of premixed hydrogen–air mixtures in a narrow channel10.1021/acsomega.2c03104 ↗
20. Effects of CO2 and N2 dilution on the characteristics and NOX emission of H2/CH4/CO/air partially premixed flame10.1016/j.ijhydene.2022.03.060 ↗
21. An experimental study of premixed hydrogen/air flame propagation in a partially open duct10.1016/j.ijhydene.2013.05.003 ↗
22. Experimental study on the spread and burning behaviors of continuously discharge spill fires under different slopes10.1016/j.jhazmat.2020.122352 ↗
23. The effect of gas jets on the explosion dynamics of hydrogen-air mixtures10.1016/j.psep.2022.04.032 ↗
24. Experimental and numerical investigation on diluted DME flames: thermal and chemical kinetic effects on laminar flame speeds10.1016/j.fuel.2012.06.003 ↗
25. Numerical study on the effects of diluents on the laminar burning velocity of methane-air mixtures10.1021/ef300535s ↗
26. Theoretical analysis of anomalous explosion behavior for H2/CO/O2/N2 and CH4/O2/N2/CO2 mixtures in the light of combustion-induced rapid phase transition10.1016/j.ijhydene.2015.04.092 ↗
27. Measurements of pressure and flame speed during explosions of CH4/O2/N2/CO2 mixtures10.1016/j.jlp.2016.06.005 ↗
28. Anomalous behavior during explosions of CH4 in oxygen-enriched air10.1016/j.combustflame.2011.03.015 ↗
29. The cRPT Phenomenon: Theoretical Evaluations
30. Experimental study of the effect of ambient pressure on oscillating behavior of pool fires10.1016/j.energy.2020.117783 ↗
31. A computational flame length methodology for propane jet fires10.1016/j.firesaf.2006.01.003 ↗
32. Burning characteristics of conduction-controlled rectangular hydrocarbon pool fires in a reduced pressure atmosphere at high altitude in Tibet10.1016/j.fuel.2013.04.032 ↗
33. Prediction of thermal radiation received by vertical targets based on two-dimensional flame shape from rectangular n-heptane pool fires with different aspect ratios10.1016/j.energy.2019.07.083 ↗
34. An experimental investigation of the flame height and air entrainment of ring pool fire10.1016/j.fuel.2017.11.141 ↗
35. Multicomponent pool fires: trends in burning rate, flame height, and flame temperature10.1016/j.fuel.2020.118913 ↗
36. Peak gas velocities and flame heights of buoyancy-controlled turbulent diffusion flames
37. A re-examination of entrainment constant and an explicit model for flame heights of rectangular jet fires10.1016/j.combustflame.2014.05.003 ↗
38. Visible structure of buoyant diffusion flames
39. The evolution of flame length for the oil tank fire with different top cover widths and lip heights10.1016/j.jlp.2020.104070 ↗
40. The investigation of flame length and flow field structure in the underground vertical channel with different opening areas10.1016/j.tust.2021.103846 ↗
41. Flame projection lengths of horizontally oriented buoyant jet fires under different air pressures10.1016/j.csite.2021.101327 ↗
42. Determination of the thermal efficiency of pre-boilover burning of a slick of oil on water10.1016/S1353-2561(98)00049-8 ↗
43. Experimental and theoretical analysis on extension flame length of buoyancy-induced fire plume beneath the curved ceiling10.1016/j.tust.2022.104365 ↗
44. Experiments investigating fuel spread behaviors for continuous spill fires on fireproof glass10.1177/0734904116683716 ↗
45. Laminar flame speeds of DMF/iso-octane-air-N2/CO2 mixtures10.1021/ef201638w ↗
46. Experimental and numerical study on laminar flame characteristics of methane oxy-fuel mixtures highly diluted with CO210.1021/ef401220h ↗
47. Complex‐valued classical trajectories for reactive tunneling in three‐dimensional collisions of H and H210.1063/1.1679366 ↗
48. Stephen · 2000
49. Lower flammability limit of H2/CO/air mixtures with N2 and CO2 dilution at elevated temperatures10.1016/j.ijhydene.2020.01.247 ↗