Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Analysis of Water Flux Uniformity for Various Fire Sprinkler Head Type

화재 진압용 스프링클러 헤드 유형에 따른 살수 균일도 분석

  • 방새미 (서울과학기술대학교 안전공학과 대학원) ;
  • 안찬섭 (서울과학기술대학교 안전공학과) ;
  • 김태훈 (서울과학기술대학교 안전공학과)
  • Received : 2023.06.05
  • Accepted : 2023.06.14
  • Published : 2023.06.30
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Abstract

A sprinkler is a fire suppression system that extinguishes combustible materials in the early stages of a fire, creating a spray. However, spray formation method of the sprinkler can result in an uneven distribution of water spray on the surface of combustible materials. It is necessary to ensure a consistent water flux density regardless of the spray direction and angle. In this study, the water flux distribution was analyzed for the various types of sprinkler head: circular, flush, pendent, and upright types. All sprinkler heads have a K-factor of 80 LPM/(0.1MPa)0.5. In this study, water collection cubes were used to examine the water flux distribution. The upright type sprinkler head showed a low standard deviation in total sprayed area, indicating a high level of uniformity. The upright type head showed the lowest standard deviation in the radial direction, and also showed the lowest standard deviation in the azimuthal direction. Upright sprinkler head has no obstructing structure along the path of droplets after they are generated. For this reason, upright sprinkler head showed the most uniform water flux distribution on the floor.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행되었음(과제번호:2020RIFIA1071012).

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