Experimental study on restraining flashover by ultra-fine water mist in confined space

Restraining flashover would reduce fire loss effectively. After building a small scale compartment with ultra-fine water mist restraining confined space flashover, the restraining efficiency and influencing factors were investigated. It was found that the restraining effect relies on mist flux, discharging moment and position. With sufficient mist, early discharging showed better effect compared with discharging later, while discharging from the bottom worked better than from side faces. When insufficient mist flux, the combustion enhancing effect would accelerate and intensify flashover.