Paper Conference

Proceedings of ASim Conference 2014: 2nd Asia conference of IBPSA-China, Japan, Korea


Numerical and Experimental Investigation of Pressurization System in a High-Rise Building with Stairwell Compartmentation

Busra Hepguzel

Abstract: Stairwell pressurization is an important part of the fire safety plan of high rise buildings because it is associated with life safety by means of preventing fire and smoke spread into the stairwells in case of a fire. Fire safety codes and standards require that the pressure difference between the stairwell and the floor is kept in a certain range at each floor, because too much pressure causes excessive forces for opening stair doors and inhibits the occupants to enter the staircases. Stairwell pressurization systems should provide homogeneous pressure distribution along the stairwells by eliminating the driving forces on air movement. Magnitudes of these driving forces increase as the height of the building increases. A typical application in high rise buildings is compartmentation, dividing the stairwell vertically into two or more separate pressurization zones by walls and doors. The door is kept unlocked to provide free access across the zones for the occupants. By this approach, the magnitudes of the driving forces are expected to decrease. In this paper, field experiments and building simulation are executed in a high-rise building with two pressurization zones and the effect of the compartmentation is examined by keeping the door either open or closed during the set of measurements. The results show that more homogeneous pressure distribution is obtained in closed door situation than that in open door situation.
Keywords: Stairwell pressurization, high-rise building, stairwell compartmentation, field tests, CONTAM
Pages: 99 - 106