FIRE DISASTER PREVENTION FACILITY AND SPRAYING METHOD

摘要

Water-based extinguishant is pressure supplied to an extinguishant supply facility for pressure supplying water-based extinguishant through piping and to a charged spray head installed in a protected area (A) through piping, and jet particles of extinguishant are sprayed from the charging spray head after being charged. A pulsed charging voltage or an AC charging voltage is applied from a voltage application section (15) to the charging spray head, and an external electric field generated by applying a voltage between an electrode portion on the side of water and an induction electrode portion is applied to the extinguishant in a spraying process, thus charging the jet particles.