Abstract
Since smoke is one of the lethal factors at the scene of a fire, the effectiveness of a smoke control system is of great importance. Buildings are likely to be influenced by natural winds, so the effectiveness of a natural smoke extraction system is often questioned. This study discusses the feasibility of using the Venturi principle to improve a natural smoke extraction system for buildings under the effect of wind. The findings show that side smoke extraction is likely to be influenced by external air flow. Smoke extraction can clearly be improved if a negative pressure zone is formed outside the smoke vent.
Highlights
Hazards of smoke at the scene of a firePopulations are concentrated in cities in various countries where there is rapid growth in technology and the economy
Introduction to Fire Dynamics Simulator (FDS) softwareThis study used computer simulation software to build a fire simulation analysis, which is an extensively used method
When the air flow is stable at 30 sec, a negative pressure zone is formed at the throat of the smoke vent
Summary
Populations are concentrated in cities in various countries where there is rapid growth in technology and the economy. As population densities increased, more accidental fires have caused casualties, increasing attention to the subject of building fire safety [1, 2]. Smoke at the scene of a fire can be lethal. The hazards of smoke include high temperature, toxicity and obscuration. The first two hazards can cause immediate death. The last hazard can negatively affect the evacuation of people and the work of rescue personnel [3]. How to effectively control and remove the smoke at the scene of a fire is an important research subject
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