DEVELOPMENT ON HIGH-PRESSURE FINE MIST NOZZLE FOR FIRE SUPPRESSION

摘要

Nozzle is a vital executing component of high-pressure fine water spray for fire suppression system. The droplet distribution of double-deck(twin-fluid) full cone nozzle is more equable and can cover larger fire area than single one. By ignoring radial variance of fluid axial velocity, a designing method on double-deck full cone nozzle is proposed. Finally, an experiment is performed, whose results are according well with the counting data.