2유체 미세 물분무 소화노즐의 분무유동 특성 = Spray Flow Characteristics of Twin-fluid Water Mist Nozzle for Fire Suppression

다국어 초록 (Multilingual 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.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 2유체 미세 물분무 소화노즐
• 3. 2유체 미세 물분무 자동소화시스템
• 4. 2유체 미세 물분무 소화노즐의 NFPA 750 규정 만족도 실험
• 5. 2유체 소화노즐의 분무 성능실험
• 6. 화재진압 실험
• 7. 결론
• 후기
• 참고문헌

참고문헌 (Reference)

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• 2 공하성, "산림화재로부터 문화재를 보호하는 소방시설에 관한 연구 −미분무수설비를 중심으로−" 한국화재소방학회 21 (21): 44-51, 2007
• 3 김봉환, "미세물분무 소화성능에 관한 연구" 대한설비공학회 15 (15): 4-578, 2003
• 4 Komori, S, "Turbulent Flow Structure in the Mean Field of a Swirling round Free Jet" 28 : 2075-2082, 1985
• 5 Yule, A. J., "Swirl Atomizers Operation at High Water Pressure" 38 (38): 981-1000, 1996
• 6 "NFPA 750 Standard on Water Mist Fire Protection Systems, 1996 Edition"
• 7 Nasr, G. G., "Industrial Sprays and Atomization -Design and Applications" Springer 2002
• 8 Kang, W. B, "Flow Characteristics of Spray with Changing Swirl Angle of Twin-fluid" 50-56, 2000
• 9 Wang, X., "Experimental Study on the Effectiveness of the Extinction of a Pool Fire with Water Mist" 20 : 279-295, 2002
• 10 Sovani, S. D., "Effervescent Atomization" 27 : 483-521, 2001
• 11 Lee, S. G, "Effect of Air/Liquid Mass Flow Ratio on Mean Velocity and Atomization Characteristics in Counter-flowing Pneumatic Jets" 2000
• 12 Jones, A, "Discussions on the Use of Fine Water Sprays or Mists for Fire Suppression" 8 (8): 17-22, 1995
• 13 Husted, B. P., "Comparison of PIV and PDA Droplet Velocity Measurement Techniques on Two High-pressure Water Mist Nozzles" 44 : 1030-1045, 2009
• 14 Kim, M. B, "A State of the Art for Water Mist Fire Protection Systems and Introduction of NFPA 750" 1 (1): 2-5, 2000