Influence of environmental temperature on gas explosion pressure and its rise rate

Li Run-zhi; Huang Zi-chao; Si Rong-jun

doi:10.11883/1001-1455(2013)04-0415-05

Volume 33 Issue 4

Mar. 2014

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Article Navigation > Explosion And Shock Waves > 2013 > 33(4): 415-419

Zhang Zhu, Jin Yan -juan. Shock wave loading of reverse detonation model[J]. Explosion And Shock Waves, 2014, 34(2): 223-228. doi: 10.11883/1001-1455(2014)02-0223-06

Citation:

Li Run-zhi, Huang Zi-chao, Si Rong-jun. Influence of environmental temperature on gas explosion pressure and its rise rate[J]. Explosion And Shock Waves, 2013, 33(4): 415-419. doi: 10.11883/1001-1455(2013)04-0415-05

Zhang Zhu, Jin Yan -juan. Shock wave loading of reverse detonation model[J]. Explosion And Shock Waves, 2014, 34(2): 223-228. doi: 10.11883/1001-1455(2014)02-0223-06

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Influence of environmental temperature on gas explosion pressure and its rise rate

doi: 10.11883/1001-1455(2013)04-0415-05

1.
(Chongqing Research Institute of China Coal Technology & Engineering Group Corporation, Chongqing400037, China)

Funds:

Supported by the National Natural Science Foundation of China (51274238) 

Publish Date: 2013-07-25

Abstract

Abstract

Based on the theoretical analyses, a set of experimental equipment, which consisting of a 20-litre closed spherical container, a gas distribution system, an ignition system, a heating system and a data acquisition system, was adopted to experimentally investigate the effects of the different environmental temperatures on the gas explosion pressure and the maximum pressure rise rate. The experimental results show that when the other conditions remain unchangeable, the maximum explosion pressure gradually decreases with the increase of the environmental temperature and its attenuation is linear with the reciprocal of the environmental temperature. With the increase of the environmental temperature, the chemical reaction rate quickens, and the time that the explosion pressure reaches its peak shortens. The maximum pressure rise rate of the gas explosion is nonlinear with the increase of the environmental temperature, but it basically remains unchanged in the 298-473 K environmental temperature range.
- mechanics of explosion,
- gas explosion,
- environmental temperature,
- explosion pressure,
- pressure rise rate

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本文在完成过程中得到北京理工大学爆炸科学与技术国家重点实验室宁建国教授和赵衡阳教授的很多指导, 在此表示感谢。

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