Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on the Effective Fire and Smoke Control in Road-Tunnel with Semi-Transverse Ventilation

도로터널 화재시 반횡류식 균일배기 환기방식에서의 최적배연 연구

  • Jeon, Yong-Han (Mechanical Engineering Research Institute In-ha University) ;
  • Yoo, Ji-Oh (Department of Building Mechanical Engineering, Shinheung College) ;
  • Kim, Nam-Jin (Department of Nuclear and Energy Engineering, Cheju National University) ;
  • Seo, Tae-Boem (Department of Mechanical Engineering, In-ha University) ;
  • Kim, Jong-Yoon (Korea Fire Association)
  • Published : 2009.03.10
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Abstract

In this study it is intended to review the moving characteristics of smoke by performing visualization for calculation of the optimal smoke exhaust air volume in case a fire occurs in tunnels where transverse ventilation is applied, and to obtain basic data necessary for design of the smoke exhaust systems by deriving optimal smoke exhaust operational conditions under various conditions. As a result of this study, if it was assumed 0 critical velocity in the tunnel, the smoke exhaust air volume was limited within 250 meter in the road-tunnel disaster prevention indicator and the exhaust efficiency was from 55.1% to 95.8% in the result of this study. In case of oversized exhaust ports, the generated smoke is more than the case of uniform exhaust. When the critical velocity in the tunnel is 1.75 m/s and 2.5 m/s, the optimal smoke exhaust air volume has to be more than $173\;m^3/s$, $236\;m^3/s$ for the distance of the moving smoke which can limit the distance to 250 m.

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References

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