Estimating Air Leakage Through Doors for Smoke Control.
Estimating Air Leakage Through Doors for Smoke Control.
(283 K)
Gross, D.
Lund University. Science of Building Fire Safety.
Symposium to Honor Professor Ove Pettersson on His
Retirement. May 2-4, 1989, Lund, Sweden, 1-3 pp, 1989.
Fire Technology, Vol. 26, No. 1, 75-81, February 1990
AND Fire Safety Journal, Vol. 17, No. 2, 171-177, 1991,
1991.
Keywords:
fire safety; building safety; air leakage; doors; smoke
control; seals; air flow; door assemblies
Abstract:
A generalized, nondimensional relationship for flow
through defined narrow gaps is used to predict leakage
flow past closed door assemblies. Typical gap shapes
considered include straight-thorugh; single or double
sharp (90 deg) bends; baffle at leading edge; comb-type
labyrinth; and filament brush seal. Applications for
prediction and design appropriate to smoke control
systems are indicated. One of the most difficult design
problems in maintaining the fire-safety integrity of
separating elements deals with joint and penetration
details. Doors within walls represent a major
challenge, in terms of both flame penetration and the
passage of smoke and gases. With the increased
attention now being given to the design of buildings to
control smoke movement and to maintain smoke-free areas
of refuge, better information on the flow of air and
smoke-air mixtures through closed door assemblies is
needed.
