Abstract
A series of pressurization smoke control experiments were conducted using a fire room [2. 7 m × 3. 6 m × 1. 18 m (height)] of two-fifths reduced scale model for examining air supply conditions necessary to prevent smoke efflux from a fire room. For understanding the prediction of the critical air velocity to prevent smoke backflow under pressurization smoke control, the temperature of the hot layer formed in a fire room shall be well-assessed. Therefore, the temperature of the hot layer in a fire room and the waste gas of the exhaust were measured for constructing equations for simple prediction.
In case of pressurization smoke control, the algebraic simple equation on the temperature of the hot layer in a fire room at unsteady state is proposed in consideration of the heat loss by the waste gas of the exhaust based on these experimental data.
