Estimating Air Leakage Through Doors For Smoke Control

Single or double sharp 90 bends.

Estimating air leakage through doors for smoke control.

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. And filament brush seal.

The smoke leakage control of. Baffle at leading edge. And filament brush seal. A generalized nondimensional relationship for flow through defined narrow gaps is used to predict leakage flow past closed door assemblies.

Prediction of the flow of air through gaps around exterior doors is of considerable importance in determining ventilation rates and heat losses in buildings. 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. Typical gap shapes considered include straight through.

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. Estimating air leakage through doors for smoke control. Applications for prediction and design appropriate to smoke control systems are indicated.