Browse > Article
http://dx.doi.org/10.7731/KIFSE.2016.30.2.068

Numerical Study on the Supply and Exhaust Port Size and Fire Management Method in the Semi-transverse Ventilation System for Road Tunnel  

Ryu, Ji-Oh (Department of Automotive Engineering, Shinhan Univ.)
Kim, Jin-Su (Graduate School, Incheon National Univ.)
Rie, Dong-Ho (Fire Disaster Prevention Research Center Incheon National Univ.)
Publication Information
Fire Science and Engineering / v.30, no.2, 2016 , pp. 68-74 More about this Journal
Abstract
In semi-transverse ventilation system applied for road tunnel, adjustment of the port opening ratio is an essential part for uniform airflow rate per unit length over the entire tunnel. However, it has not been considered decently throughout the design process and operating of the tunnel. Therefore, in this study, we developed a program for the calculation of the opening size ratio of supply or exhaust port in transverse ventilation system and carried out the research to present a management plan for the port. In supply duct system, the opening size of the port had a tendency to increase and then decrease later when it gradually becomes closer toward the bulkhead at the beginning of the duct the minimum opening degree is to appeared as 56%. In the exhaust system, port size is the smallest at the beginning of duct as 15%, has shown a tendency to increase towards the bulk head. As results of estimating the air flow rate for 300 m intervals, the exhaust flow rate in the center of tunnel appeared to be extremely low as 8.1% and 12.5% when port size is constant and is adjusted supply type. Thus, even if the normal ventilation efficiency is declines, yet it is highly recommend adjusting the port size in order to obtain a uniform flow rate at fire accidents.
Keywords
Semi transverse ventilation system; Supply and exhaust port; Smoke exhaust airflow;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 J. Y. Kim and O. J. Yoo, "A Numerical Study on Characteristics of Smoke Exhaust in Road Tunnel Fires for Different Ventilation System", J. of Korean Institute of Fire Science & Engineering, Vol. 22, No. 3, pp. 201-207 (2008).
2 Alan Beard and Richard Carvel, The Handbook of Tunnel Fire Safety, Thomas Telford, London (2004).
3 O. Vauquelin and D. Telle, "Smoke Control in Tunnel Fires - Should We Talk about Critical Velocity or Critical Mass Flow Rate", 10th Int. Sym. on the Aerodynamics & Ventilation of Vehicle Tunnels, pp. 97-103, BHRGroup Vehicle Tunnel (2000).
4 HBI Haerter Ltd., "LONG RAILWAY TUNNELS - COMPARISON OF MAJOR PROJECTS" (2008).
5 FHA, "Aerodynamics and Air Quality Management of Road Tunnel", Washington D.C. (1980).
6 Metropolitan Expressway Technology Center, "Tunnel Installation Guidelines - Research Report on the Tunnel Facilities", Japan (1993).
7 Y. H. Joen, O. J. Yoo, N. J. Kim, T. B. Seo and J. Y. Kim, "A Study on the Effective Fire and Smoke Control in Road-Tunnel with Semi-Transverse Ventilation", Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 21, No. 3, pp. 186-192 (2009).
8 STUVA, "Brandschutz in Verkehrstunneln", Bundesministerium fur Verkehr, Bau-Und Wohnungswesen (2000).
9 MINISTERE DE L'INTERIEUR and MINISTERE DE L'EQUIPEMENT, DES TRANSPORTS ET DU LOGEMENT, "CIRCULAIRE INTERMINISTERIELLE No2000- 63 DU 25 AOUT 2000 relative a la seurite dans les tunnels du reseau routier national", France (2000).
10 J. Y. Kim and Y. H. Jeon, "A Study on the Effective Fire and Smoke Control in Road-Tunnel with Semi-Transverse Ventilation (Oversized Exhaust System)", J. of Korean Institute of Fire Science & Engineering, Vol. 23, No. 3, pp. 79-84 (2009).