Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지

Spray Flow Characteristics of Twin-fluid Water Mist Nozzle for Fire Suppression

2유체 미세 물분무 소화노즐의 분무유동 특성

  • 김봉환 (경남과학기술대학교 자동차공학과) ;
  • 최효성 (부산대학교 대학원 기계공학과) ;
  • 김동건 (부산대학교 기계기술연구원)
  • Received : 2011.03.11
  • Accepted : 2011.06.23
  • Published : 2011.06.30
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Abstract

In the present investigation, experimental studies were conducted on the fire suppression performance of twin-fluid water mist spray which is subjected to thermal radiation in a closed space. Downward-directed water-mist sprays, interacting with an under kerosene pool fire, were investigated in a test facility. The mass mean diameter of water-mist droplets were measured by PMAS under various flow conditions. The developed twin-fluid water mit spray nozzle satisfied the criteria of NFPA 750, Class 1. The mechanism of fire suppression by fine water mist was concluded to be the cooling of the fire surface which leads to the suppression of fuel evaporation. It was proved that the automatic twin-fluid water mist spray system under lower pressures could be applied to an industrial facilities.

Keywords

References

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