Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지
DOI QR코드

DOI QR Code

A Study for Characteristics of Water that Penetrates Wood Flour due to Changes of Concentration of BDG

BDG 농도변화에 따른 용수의 목분 침투특성 연구

  • Kong, Il-Chean (Department of Safety Engineering, Graduate School, University of Incheon) ;
  • Park, Il-Gyu (Department of Safety Engineering, Graduate School, University of Incheon) ;
  • Lim, Kyung-Bum (Department of Fire Safety Management, Hyechon College) ;
  • Rie, Dong-Ho (Fire Disaster Protection Research Center, University of Incheon)
  • 공일천 (인천대학교 일반대학원 안전공학과) ;
  • 박일규 (인천대학교 일반대학원 안전공학과) ;
  • 임경범 (혜천대학교 소방안전관리과) ;
  • 이동호 (인천대학교 소방방재센터)
  • Received : 2013.02.04
  • Accepted : 2013.06.11
  • Published : 2013.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

As the feature of fire, it is hard for deep-seated fire to spread to the deeper site, and it also has danger for being re-ignited cause of recontacting with oxygen after being put off. Now it is ruled in the certification criteria of wetting agent used for extinguishing deep-seated fire that the criteria for surface tension is below 33[mN/m] in Korea. For figuring out how much water for fire-fighiting can permeate into combustibles, in this research, the permeating performance is analyzed by measuring the speed of permeating and transmission quantity released after that, by pouring solution whose surface tension is changed by adjusting concentration of surfactant BDG(Butyl Di Glycol) in column From this result, it is can be determined that transmission quantity becomes less and wet area goes wider as surface tension is lower, and it is also able to be analyzed as quantity of absorbed liquid and wet area is increased because fluid permeates into the core.

Keywords

References

  1. Fire Prevention Division of National Emergency Management Agency, "Carbon Dioxide Extinguishing of Fire Safety Standards( NFSC 106)", National Emergency Management Agency Notice No. 2012-122, pp. 98-105, 2012.
  2. Young-Ju Park, "A Study on Application of Combustion Products for Forest Fire Investigation", Journal of the Korean Society of Safety, Vol. 26, No. 4, pp. 111-112, 2011.
  3. Sam-Kew Roh, "A Study on Characteristics of Roof 'Jucsim' Structure Combustion Real Scale Fire Test on Wooden Structure Heritage Building", Journal of Korean Institute of Fire Science & Engineering, Vol. 24, No. 1, pp. 96-98, 2012.
  4. Sung-Soo Kim, "A Study of Analyzing Performance of Portable Extinguisher of Medium Expansion Foam", Proceedings of the Korea Institute of Fire Science and Engineering Conference, pp. 105-106, 2012.
  5. National Emergency Management Agency, "Product Testing of Technical Standards and Type Approval of Extinguishing Agents", NEMA Notice No. 2012-57, pp. 5-9, 2012.
  6. Katarzyna Szymczyk, "Wettability, Adhesion, Adsorption and Interface Tension in the Polymer/surfactant Aqueous Solution System I Critical Surface Tension of Polymer Wetting and Its Surface Tension", Colloids and Surfaces A: Physicochemical and Engineering Aspects Volume 402, pp. 132-138, 2012. https://doi.org/10.1016/j.colsurfa.2012.02.054
  7. V. R. Gray, "Contact Angles of Mercury on Low-energy Solids, Nature, pp. 608-609, 1966.
  8. T. D. Blake, Wetting, Th. Tadros(Ed.), Surfactants, Academic Press, Orlando , pp. 221-275, 1984.
  9. S. K. Rhee, "A Method for Determining Surface Energy of Solids", Mater Science Engineering, Vol. 11, pp. 311-318, 1973. https://doi.org/10.1016/0025-5416(73)90121-3
  10. Nam-Kyun Kim, "A Study on Surface Absorption Dynamic Mechanism due to the Addition of a Surfactant in Cellulosic Combustibles", Journal of Korean Society of Hazard Mitigation, Vol. 12, No. 6, pp. 223-229, 2012. https://doi.org/10.9798/KOSHAM.2012.12.6.223
  11. Sung-Mo Lee, "Development of Loaded Stream Fire Extinguishing System for Underground Transmission Cables", Journal of Korean Institute of Fire Science & Engineering, Vol. 22, No. 1, pp. 95-96, 2008.
  12. NFPA 18 Standard on Wetting Agents 2011 Edition, "Chapter 6 Class A Fire Extinguishment Tests" pp. 7-10, 2011.
  13. Hyung-ju Park, "A Combustion Characteristic of Quercus Variabilis and Pinus Densiflora Fallen Leaves Using Radiation Heat Flux", Journal of Korean Institute of Fire Science & Engineering, Vol. 21, No. 3, pp. 42-46, 2007.
  14. W. T. Simpson, "Drying and Control of Moisture Content and Dimensional Changes", Wood Handbook - Wood as an Engineering Material, Forest Product Laboratory U.S.D.A. Forest Service Madison, Wisconsin, Chapter 12, pp.1-21, 1987.

Cited by

  1. A study on the fire extinguishing characteristics of deep-seated fires using the scale model experiment vol.80, 2016, https://doi.org/10.1016/j.firesaf.2016.01.003