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KMID : 0896220000200010397
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Journal of Daegu Health College
2000 Volume.20 No. 1 p.397 ~ p.412
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The Numerical Analysis To Predict the Environment and the Response of Sprinklers in Compartment Fires of High Bay Aircraft Hangars
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Jeon Heung-Kyun
Choi Young-Sang
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Abstract
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This study is designed to analyze fire phenomena and to set guidelines for fire protection in the compartment fires of high bay aircraft hangars. The high bay aircraft hangar dimension is the large space of 40m by 40m with the ceiling height of 15m. The fire scenario used in this study are simulated by LAVENT (Link-Actuated VENTs) code which has been developed to simulate the response of sprinklers in compartment fires of the large spaces with and without draft curtains and fusible-link-actuated ceiling vents. Parameters investigated in this study are the effects of fusible link distances below the ceiling, draft curtains height and vent area on the temperature of link, the response of sprinklers, the temperature of upper smoke layer and the height of smoke interface. The results are as follows: (1) When there is no accumulation of hot smokes, the maximum temperature occurs at a distance below the ceiling of 1% of the total ceiling height. (2) The effective depth of draft curtains is a distance below the ceiling of 26% of the total ceiling height. (3) As vents area becomes large, link temperature drops regardless of radial distance. (4) The deeper draft curtains becomes, the more quickly sprinklers operates and the larger vents area becomes, the more slowly sprinklers operates.
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