Optimization On Fire Smoke Control Of Commercial Buildings With Atrium

Based on the existing domestic regulations on smoke and gas control system and foreign research progress on the subject,research is conducted in this paper on atrium commercial buildings' efficiency in smoke control and exhausting in fires and a more productive design is suggested.The paper introduces foreign research status of smoke control and exhausting system for the atrium commercial building and calculation methods of the factors involved in the indoor airflow when such buildings are on fire,as well as makes a theoretical analysis on the process of air movement on such occasions.The paper performs a series of analysis and suggests a design that combines natural smoke exhausting and mechanical exhausting.The design is economical and eco-friendly principle and meets the specific requirements in Codes for Design of Building Fire Protection on smoke exhausting and the system based on it has been compared in a simulation with the purely mechanical smoke exhausting system in terms of energy efficiency and working efficiency.According to the modeling,simulation and calculation in Pyrosim and FDS,the system adopting the new design consumes less energy,reach a steady state more quickly in the case of indoor fires of the atrium building and smoke in smoke-concentrating areas is thinner when the system works in such state,compared with the purely mechanical exhausting system.Hence,it is safe to draw the conclusion that the exhausting system created in accordance with the new design is superior to that based on the previous design.The research has practical value and its findings can provide guidance for smoke exhausting design for atrium architectures.