UDC 614.842.612
The article addresses the issue of water delivery during firefighting operations using compact jets. The range of water delivery from a fire hose is a key factor in extinguishing large fires, as well as in situations involving high thermal radiation intensity and potential explosions. Under such conditions, it is crucial to ensure maximum efficiency in water delivery, thereby enhancing the safety of firefighting personnel. A novel method for calculating the technical characteristics of fire hose nozzles is proposed, which allows for the improvement of water delivery parameters. Experimental results confirming the effectiveness of the proposed method are presented. To increase the range of the jet from the fire hose nozzle, it is necessary to design the nozzle such that the Reynolds number changes uniformly along its length. The optimal length of the conical section of the nozzle for achieving maximum jet range has been experimentally established. It has been determined that for nozzles with a high flow rate, a multi-layered internal body is required. A solution is proposed in the form of a nozzle that consists of a diffuser with internal diffusers designed with a calculated cross-sectional profile
fire scene inspection, regulatory fire-technical expertise, fire safety requirements, analysis
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