INTEGRATION OF A DUAL-REEL, CARDAN-DRIVEN WATER MIST MODULE INTO A FIRE TRUCK

This paper reports the design and experimental validation of a new handheld water-mist nozzle and suppression module. The goal was to improve fire localization and extinguishment while simultaneously reducing agent consumption and limiting secondary water damage. The analysis of existing nozzle and water delivery module designs was conducted, identifying their limitations when extinguishing fires in confined spaces and at facilities with sensitive equipment. Based on these findings prototype nozzle was developed that generates a stable spray plume with tunable droplet-size distribution and uniform mist dispersion. Experimental tests confirmed that the use of finely atomized water increases the cooling and inertial extinguishing efficiency by 25–30 % while reducing water consumption by up to 40 % compared to traditional systems.
The designed module can be integrated into portable and vehicle-mounted fire-and-rescue equipment, enhancing the operational capability of EMERCOM of Russia units in extinguishing fires of varying complexity.