지하계단 화재에서 유동에 대한 실험연구An Experimental Study of Flow Behaviour in Underground Stairway Fire
- Authors
- 정진용; 홍기배; 이재하; 유홍선
- Issue Date
- 2003
- Publisher
- 대한설비공학회
- Keywords
- Sloped ceiling; Underground fire; Heat detector; Soffit; Smoke diffusion; 기울어진 천장; 지하화재; 화재감지기; 차단막; 연기확산
- Citation
- 설비공학 논문집, v.15, no.10, pp 5 - 827
- Pages
- 823
- Journal Title
- 설비공학 논문집
- Volume
- 15
- Number
- 10
- Start Page
- 5
- End Page
- 827
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/32032
- ISSN
- 1229-6422
- Abstract
- Reduced-scale experimental study was carried out on the heat flow behavior which flows under the sloped ceiling in underground fire. Temperature and flow velocity were measured to characterize the ceiling jet along the sloped stairway ceiling. The methanol fuel was used as a model fire source giving 2.2 and 3.4 kW, with changing the slope angle of stairway adopting of 15, 25, 35, and 45 deg. Based on the experimental data, excess temperature and velocity along the sloped stairway ceiling were examined which are usefully applicable to estimate the activating conditions of heat detector and sprinkler head mounted on the sloped ceiling. Excess temperature in upper exit of the sloped stairway was also examined to analyze the soffit which delays the smoke diffusion. The result shows that the activating conditions of heat detector and sprinkler in the sloped stairway ceiling have to be considered differently in a point of about 30 deg.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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