Research On The Smoke Control For A Large Exhibition Hall

This paper discusses1) the separation of the pavilion fire protection district and the smoker protection district, and2) the feasibility of the exhaust system in a tall pavilion hall space. The design aims to ensure the safety of personnel and to avoid fire broke out. The analysis takes into account the structural characteristics of the pavilion hall and integrates fire and smoke CFD simulation.The pavilion hall selected for the study is in the1st exhibition hall of the original main building. The hall’s original architectural design is a two-story building. In order to meet the large space and transparent exhibition requirement during the exhibition, there is no floorslab for the12m layer and thus, the exhibition hall is in a single-layer space and has a pavilion space height of up to21.6m. According to the adjusted fire protection design, a separate mechanical exhaust system is located in each closed exhibition room and the smoke discharge of the large open exhibition space relies mainly on the roof electric exhaust windows of the original design. In the original building fire protection design, electric roof exhaust windows are used for the second floor (12.00m layer) of the original main building. During the exhibition, there is no floorslab for the12.00m floor and thus, the natural smoke discharge space height increases by12m. Due to the large attenuation of the thermal buoyancy during hot smoke rising in the large space fire, mass settlement of the hot smoke is very likely to happen. In this case, whether the heat generated by the ground fire smoke can rise to the roof along the hot smoke plume and smoothly exhaust to the outside through the roof electric exhaust window remains to be determined through performance-based analysis.This paper uses the FDS software for modeling the flow of flue gas in a particular fire scenario, the temperature field, and a variety of hazardous substances concentration field changes. This paper also compares the change of different parameters such as the smoke layer height, temperature, carbon monoxide concentration, and visibility under different smoke discharge conditions. The design aims to ensure the safety of personnel and to avoid fire broke out. The analysis takes into account the structural characteristics of the pavilion hall and integrates fire and smoke CFD simulation.