Effect of smoke exhaust outlet arrangement on mechanical smoke exhaust effect in protection works

Xiang Jianyu, Mao Jinfeng, Yu Nantian, Deng Zhongkai and Mao Wei

2019.09.17

When a fire happens in a protection works, the high temperature smoke will rapidly spread and the personnel will not evacuate easily, which will cause great harm. Aiming at the performance-based design method of smoke control and exhaust system of a protective works, by means of numerical simulation, compares the smoke exhaust effects of lateral smoke exhaust at the side of the pipeline and the bottom smoke exhaust at the bottom of the pipeline. The results show that the smoke exhaust effect is better when the exhaust outlet is opened on the side of the pipeline, which is more conducive to evacuation. Aiming at the lateral smoke exhaust system, studies the influence of the amount of smoke exhaust on the smoke exhaust effect and carries out a performance-based evaluation of the optimal engineering smoke exhaust system.