- Title
- Investigation of methane and coal dust concentration impact on explosion pressure rise in a confined spherical space
- Creator
- Badat, Yusuf; Ajrash, Mohammed Jabbar; Zanganeh, Jafar; Moghtaderi, Behdad
- Relation
- 11th Asia-Pacific Conference on Combustion (ASPACC 2017). Proceedings of the 11th Asia-Pacific Conference on Combustion (Sydney 10-14 December, 2017)
- Publisher
- UNSW
- Resource Type
- conference paper
- Date
- 2017
- Description
- Preventing explosions from happening requires a good understanding of the characteristics of a gas explosion. The effect of methane concentration, coal dust concentration and igniters energy on explosion characteristics were investigated using a 1m 3 spherical vessel. The pressure rise increased from 6.8 bar for a 6.5% methane mixture to 8.1 and 8.3 bar for 9.5% and 11.0% methane mixtures respectively. Additionally; the rates of pressure rise increased from 222 to 517 bar.s-1 for the range of methane mixtures exploded. The severity of the explosions increased with increasing igniter energy. The maximum pressure rise rate increased from 83 bar.s -1 for 1 kJ igniter to 90 bar.s-1 for 2 kJ igniter, to 155 bar.s-1 for 5 kJ igniter and to 222 bar.s-1 for 10 kJ igniter. The severity of the explosions increased with increased coal dust concentration. At 2.5% methane-air mixture, the pressure rise rate increased from 4 bar.s-1 to 114 bar.s-1 when the coal dust concentration increased from 50 g.m-3 to 100 g.m-3, respectively.
- Subject
- methane; coal dust; explosions; gas explosions; pressure; igniter energy
- Identifier
- http://hdl.handle.net/1959.13/1386348
- Identifier
- uon:32400
- Language
- eng
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