Estimating Air Leakage Through Doors For Smoke Control

Baffle at leading edge.

Estimating air leakage through doors for smoke control.

Fire safety journal 17 1991 171 177 estimating air leakage through doors for smoke conirolt daniel gross center for fire research national institute of standards and technology gaithersburg maryland 20899 usa abstract a generalized nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies. Applications for prediction and design appropriate to smoke control systems are indicated. Typical gap shapes considered include straight through. Realistic smoke leakage control was investigated using actual scale through penetration firestop models installed in a curtain wall and air leakage measurement units.

And filament brush seal. The smoke control criterion required in the united kingdom is 3m3 of air loss per hour per linear metre of joint between door leaves and the doorframe or transom when measured at 25pa pressure. Single or double sharp 90 bends. Typical gap shapes considered include straight through.

Single or double sharp 90 bends. A generalized nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies. Baffle at leading edge. Knowledge of air leakage is also of importance in estimating the effectiveness of interior doors as barriers to smoke flow and in the design of smoke control systems where stair and elevator.

The smoke leakage control of. The test procedure prescribes that during test the gap between the bottom edge of the door leaf and the floor or threshold is sealed. Estimating air leakage through doors for smoke control.