Estimating Air Leakage Through Doors For Smoke Control

Prediction of the flow of air through gaps around exterior doors is of considerable importance in determining ventilation rates and heat losses in buildings.

Estimating air leakage through doors for smoke control.

Baffle at leading edge. 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. Realistic smoke leakage control was investigated using actual scale through penetration firestop models installed in a curtain wall and air leakage measurement units. Single or double sharp 90 bends.

Typical gap shapes considered include straight through. Nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies. 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. And filament brush seal.

And filament brush seal. Typical gap shapes considered include straight through. Applications for prediction and design appropriate to smoke control systems are indicated. The smoke leakage control of.

Estimating air leakage through doors for smoke control. Single or double sharp 90 bends. The test procedure prescribes that during test the gap between the bottom edge of the door leaf and the floor or threshold is sealed.