계단실 가압과 승강로 가압 제연방식의 성능 비교 연구

Abstract

Pressurization of stair and elevator shaft is used to prevent the diffusion of smoke over the whole building through the elevator shaft and stair in high rise building. At the apartment which combines the vestibule of a special evacuation stair and the platform of an emergency elevator, the pressurization test of stairway and elevator shaft was carried out. At the elevator pressurization test, the amount of air was 150 CMM, which was necessary to sustain the pressure difference of the standard, 50 Pa, at the condition of all closed doors. When an elevator door was opened, the average velocity went beyond the standard value, 0.75 m/s, at the swelling door and kept the pressure difference of 10 Pa was sustained at the non-opened floor. On the other hand, in the case of the pressurization of stairway, when a low-floor door was opened, the pressure difference of 10 Pa could not be kept at the closed floor even though the amount of air of 180 and 360 CMM was supplied. When a high-floor door was opened, the pressure difference of 10 Pa was made at the non-opened floor, but the overpressure was caused at the low-floor. Therefore, the comparision result of two methods of smoke control showed that the pressurization of elevator shaft have better performance than that of the pressurization of stairway.