Experimental Study on Ultra-Fine Water Mist Extinguishing Heptane Cup Fire in Confined Space

The paper introduced a kind of new ultra-fine water mist extinguisher, and conducted serials total flooding extinguishing test on ultra-fine water mist extinguishing heptane cup fire in 1200mm×1200mm×1200 mm confined space. Test results showed that the ultra-fine water mist extinguisher was effectively in extinguishing 50 ml heptane cup fire when it's theoretically mist flux was 100 ml/min or more.