Journal of the Korea Safety Management & Science (대한안전경영과학회지)

Korea Safety Management & Science (대한안전경영과학회)
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A Study on the Closing Force according to the Opening Angle of the Door in the Smoke Control System

제연구역 출입문 개방 각도에 따른 폐쇄력에 관한 연구

  • Oh, Won-Sin (Department of Fire and Disaster Prevention, Sejong Cyber University) ;
  • Joung, Suck-Hwan (Department of Fire and Disaster Prevention, Sejong Cyber University)
  • 오원신 (세종사이버대학교 소방방재학과) ;
  • 정석환 (세종사이버대학교 소방방재학과)
  • Received : 2021.12.09
  • Accepted : 2021.12.21
  • Published : 2021.12.31
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Abstract

In this study, the experiment was conducted on a fire door(W × H = 0.98 m × 2.19 m) installed on the vestibule. The effective leakage area for each opening angles and closing forces derived from the impulse-momentum equation was compared and analyzed with the experimental results. As a result of the experiment, the major factors affecting the door closing forces were the pressure difference and the area of the door. The difference of door closing forces between measured and calculated values by the impulse-momentum equation showed a deviation of less than ±15% at the opening angles of 5°to 10°. At the door opening angle of 2.5°, the dynamic pressure was much higher than the measured static pressure, and this pressure difference is estimated to be air resistance acting to prevent the door from being completely closed.

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References

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