The tactics analysis of multi-purpose nozzle apply to fire ventilation

The multi-purpose nozzle is a widely equipped and used fire nozzle type in China fire rescue. The article revolved around major functions of the multi-purpose nozzle and misty water effects in the fire ventilation, discussed the application scenarios and tactical methods of the multi-purpose nozzle in fire ventilation, analyzed the need to consider factors of the multi-purpose nozzle in the fire ventilation method and obtained a reasonable ventilation area by formula calculation, it provide reference for firefighters to improve smoke exhaust efficiency in fire fighting.