A Study on the Effect of Ceiling Type Air Conditioner on Sprinkler Head Operation

천장형 에어컨이 스프링클러 헤드 작동에 미치는 영향에 관한 연구

  • Yi, Sunyoung (Graduate School, Department of Fire Protection Engineering, University of Seoul) ;
  • Yoon, Myong O (Department of Disaster Science, University of Seoul) ;
  • Lee, Youngju (Department of Fire Protection, University of Seoul) ;
  • Lee, Jun (Dept. of Road Transport, Center for National Transport Safety)
  • 이선영 (서울시립대학교 방재공학과) ;
  • 윤명오 (서울시립대학교 재난과학과) ;
  • 이영주 (서울시립대학교 소방방재학과) ;
  • 이준 (한국교통연구원 도로교통본부 교통안전.방재연구센터)
  • Received : 2019.10.31
  • Accepted : 2020.01.20
  • Published : 2020.03.31


This paper analyzes the effect of airflow of ceiling air conditioner on the operation of sprinkler head using a simulation program. The simulation space is 10 m × 7 m × 3 m, and the size of the fire is 0.8 m × 0.8 m × 0.6 m. The cold air flow from the air conditioner is at 25℃ and the wind speed is divided into three cases : 10 ㎧, 8.5 ㎧, and 7.5 ㎧. Simulation results show that all cases had operating delays compared to when the air conditioner was not running, and the sprinkler head did not operate until 10 minutes had elapsed at 10 ㎧ wind speed. These results confirmed that the sprinkler head was delayed in the air conditioning space and the worst result of early evolution failure was observed in strong winds such as 10 ㎧.


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