Experimental Study on Unconfined Vapor Cloud Explosion

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Experimental Study on Unconfined Vapor Cloud Explosion

BI Mingshu^a; DING Xinwei^a; ZHOU Yihui^a; YU Jianliang^a; WANG Shulan^a; ABULITI Abudula^b

^a School of Chemical Engineering, Dalian University of Technology, Dalian 116012, China
^b Faculty of Science and Technology, Hirosaki University, Japan

Received:1900-01-01 Revised:1900-01-01 Online:2003-02-28 Published:2003-02-28
Contact: BI Mingshu

开敞空间蒸气云爆炸压力的实验研究

毕明树^a; 喻建良^a; 周一卉^a; 王淑兰^a; 丁信伟^a; ABULITI Abudula^b

^a School of Chemical Engineering, Dalian University of Technology, Dalian 116012, China
^b Faculty of Science and Technology, Hirosaki University, Japan

通讯作者: 毕明树

Abstract

Abstract: An experimental system was setup to study the pressure field of unconfined vapor cloud
explosions.The semi-spherical vapor clouds were formed by slotted 0.02 mm polyethylene
film. In the center of the cloudwas an ignition electrode that met ISO6164 "Explosion
Protection System" and NFPA68 "Guide for Venting ofDeflagrations". A data-acquisition
system, with dynamic responding time less than 0.001 s with 0.5% accuracy,recorded the
pressure-time diagram of acetylene-air mixture explosion with stoichiometrical ratio. The
initial clouddiameters varied from 60cm to 300cm. Based on the analysis of experimental
data, the quantitative relationshipis obtained for the cloud explosion pressure, the cloud
radius and the distance from ignition point. Present resultsprovide a useful way to
evaluate the building damage caused by unconfined vapor cloud explosions and to
determinethe indispensable explosion grade in the application of multi-energy model.

Key words: unconfined vapor cloud explosion, safety, experiment, deflagration

摘要： An experimental system was setup to study the pressure field of unconfined vapor cloud
explosions.The semi-spherical vapor clouds were formed by slotted 0.02 mm polyethylene
film. In the center of the cloudwas an ignition electrode that met ISO6164 "Explosion
Protection System" and NFPA68 "Guide for Venting ofDeflagrations". A data-acquisition
system, with dynamic responding time less than 0.001 s with 0.5% accuracy,recorded the
pressure-time diagram of acetylene-air mixture explosion with stoichiometrical ratio. The
initial clouddiameters varied from 60cm to 300cm. Based on the analysis of experimental
data, the quantitative relationshipis obtained for the cloud explosion pressure, the cloud
radius and the distance from ignition point. Present resultsprovide a useful way to
evaluate the building damage caused by unconfined vapor cloud explosions and to
determinethe indispensable explosion grade in the application of multi-energy model.

关键词: unconfined vapor cloud explosion;safety;experiment;deflagration

BI Mingshu, DING Xinwei, ZHOU Yihui, YU Jianliang, WANG Shulan, ABULITI Abudula. Experimental Study on Unconfined Vapor Cloud Explosion[J]. .

毕明树, 喻建良, 周一卉, 王淑兰, 丁信伟, ABULITI Abudula. 开敞空间蒸气云爆炸压力的实验研究[J]. CIESC Journal.

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