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Model Scale Tunnel Fire Tests- Point extraction ventilation
-
- Ingason, Haukur (author)
- RISE,SP Fire Research
- Li, Ying Zhen (author)
- (creator_code:org_t)
- ISBN 9789186319380
- 2010
- English 1-73 s.
- Series: SP Rapport, 0284-5172 ; 2010:03
- Reports (peer-reviewed)
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- Theoretical and experimental results from a series of tests in a model scale tunnel (1:23) with point extraction ventilation systems are presented. The point extraction ventilation system was tested under different fire and flow conditions using either forced longitudinal ventilation or natural ventilation. The study focuses on single and two point extraction systems. Wood crib piles were used to simulate the fire source, which was designed to correspond to a HGV (Heavy Goods Vehicle) fire load in large scale. The parameters tested were the number of wood cribs, the longitudinal ventilation velocity and the arrangement of the extraction vent openings and the exhaust capacity. The fire spread between wood cribs with a free distance corresponding to 15 m in large scale was tested. The maximum heat release rate, fire growth rate, maximum temperature rise beneath the ceiling, flame length and heat flux were plotted using relationships obtained from theoretical considerations. The data were found to correlate well with empirical correlations that were established. Comparison was made with large-scale data wherever possible.
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- rap (subject category)
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