Estimating Air Leakage Through Doors For Smoke Control

A generalized nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies.

Estimating air leakage through doors for smoke control.

Single or double sharp 90 bends. The smoke leakage control of. Single or double sharp 90 bends. Estimating air leakage through doors for smoke control.

And filament brush seal. Nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies. The test procedure prescribes that during test the gap between the bottom edge of the door leaf and the floor or threshold is sealed. 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.

Typical gap shapes considered include straight through. Baffle at leading edge. Realistic smoke leakage control was investigated using actual scale through penetration firestop models installed in a curtain wall and air leakage measurement units. 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. Applications for prediction and design appropriate to smoke control systems are indicated. Typical gap shapes considered include straight through.