Experimental study on fire smoke control using water mist curtain in channel

Area of Science:

• Fire safety engineering
• Fluid dynamics
• Environmental engineering

Background:

• Fire smoke spread in channels poses significant hazards.
• Effective smoke control is crucial for occupant safety and evacuation.
• Early-stage fire mitigation strategies are vital.

Purpose of the Study:

• To evaluate the efficacy of water mist curtains (WMCs) in preventing fire smoke spread.
• To assess the impact of WMCs on critical evacuation factors: CO concentration, temperature, and visibility.
• To investigate nozzle characteristics and optimize WMC performance.

Main Methods:

• Experimental measurements of CO concentration, smoke temperature, and visibility within a WMC-controlled section.
• Investigation of different nozzle spray characteristics.
• Development and application of a simplified mathematical model for smoke-WMC interaction analysis.

Main Results:

• WMCs demonstrated effectiveness in inhibiting early-stage fire smoke propagation.
• Optimal working pressure and nozzle characteristics for WMC performance were identified.
• The study provided insights into the interaction dynamics between fire smoke and WMC spray.

Conclusions:

• Water mist curtains offer a promising solution for early-stage fire smoke control in channel environments.
• WMC technology can significantly enhance occupant safety by improving evacuation conditions.
• Further research and development of WMCs can lead to novel smoke control methods.