Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Experimental Investigations on Explosion Characteristics of LPG/Air Mixture by Electrostatic Discharge Energies

정전기 방전에너지에 따른 LPG/공기 혼합물의 폭발특성에 관한 실험적 연구

  • Kim, Nam-Suk (Department of Safety Engineering, Graduate School of Industry, Seoul National University of Science and Technology) ;
  • Park, Dal-Jae (Department of Safety Engineering, Seoul National University of Science and Technology)
  • 김남석 (서울과학기술대학교 산업대학원 안전공학과) ;
  • 박달재 (서울과학기술대학교 안전공학과)
  • Received : 2011.03.31
  • Accepted : 2011.11.01
  • Published : 2011.12.31
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Abstract

Experimental investigations were performed to examine the effects of different electrostatic discharge ignition energies on LPG/air mixture explosions in an explosion chamber. The chamber consisted of 500 mm in length, with a $100{\times}100mm^2$ cross section. Three different ignition energies were used: 0.30 mJ, 46 mJ and 98 mJ. Flame propagations were recorded by a high speed video camera. The results of flame speed and pressure obtained from the different ignition energies were discussed. It was found that as the energy increased, different flame initiations occurred. This caused the time interval in both the flame and pressure developments. It was also found that the flame speed and the pressure were less sensitive to both 0.30 mJ and 46 mJ, except for the ignition energy of 98 mJ.

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References

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