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수직갱이 설치된 터널내 화재시 연기거동에 관한 실험적 연구An Experimental Study of Smoke Movement in Tunnel Fires with a Vertical Shaft
- Issue Date
- 2004
- Publisher
- 대한설비공학회
- Keywords
- Tunnel fire; Smoke movement; Natural ventilation; Vertical shaft; 터널화재; 연기거동; 자연환기; 수직갱
- Citation
- 설비공학 논문집, v.16, no.2, pp 135 - 141
- Pages
- 7
- Journal Title
- 설비공학 논문집
- Volume
- 16
- Number
- 2
- Start Page
- 135
- End Page
- 141
- ISSN
- 1229-6422
- Abstract
- The present paper concerns a smoke movement in a tunnel fire with a vertical shaft. The model tunnel measured 13.4 m long, 0.4 m wide and 0.4 m high. The cross section is 1：20 of a full scale tunnel. Ethanol was used as a fuel. The fire size in model tests varied from 1.35 kW to 13.37 kW, which corresponds to full scale fires of 2.41 to 23.91 MW. Smoke front velocity and temperatrue were decreased due to the vertical shaft install. Temperature was reduced maximum about 20℃ at ceiling and about 23℃ at vertical position. CO concentration was reduced as the vent width widened. When vent width was more than 15 cm, CO concentration was not reached 100 ppm. Descent degree of the smoke layer was confirmed through the visualization.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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