INCREASING EFFICIENCY OF WATER FIRE EXTINGUISHING SYSTEMS BY USING HYDRODYNAMIC ACTIVE POLYMERS

Abstract

It has been established that water solutions of polyhexamethyleneguanidine hydrochloride exhibit hydrodynamic activity in the studied range of concentrations of PHMG-HC (0.3‒1.4 %). We have determined experimentally the increase in pressure of polyhexamethyleneguanidine hydrochloride water extinguishing agent by 2‒6 % in comparison with tap water at the fixed flow rate from the drencher distributors. It has been shown that the maximum increase in the flow rate of extinguishing liquids with polymer additives through drencher distributors occurs at a polymer concentration of 0.7 %.  

It has been established experimentally that the flow rate of the water-extinguishing agent of polyhexamethyleneguanidine hydrochloride from drencher distributors in the studied concentration range along the pipeline of 1–13 m increased by 1.86–7.69 % depending on the concentration and length of the pipeline. Showed that the addition of insignificant concentrations (0.035‒0.290 %) of polyhexamethyleneguanidine hydrochloride increased the flow rate of water extinguishing agent by 1.20‒1.78 times when using the RSK-50 fire barrel. It was found that the hose line and fire barrel worked under the mode of reduction of the hydrodynamic resistance almost by 2 times at polyhexamethyleneguanidine hydrochloride concentrations of 0.290 %.