Experimental study of acoustic agglomeration coupled with water droplets on eliminating cable fire smoke

Abstract

Acoustic agglomeration to eliminate fire smoke is one of the most promising technologies at this stage, and we effectively solve technical stumbling blocks such as narrow acoustic frequency range, sound pressure level injury, and long agglomeration time using acoustic waves coupled with water droplets. According to the mechanism and experimental research, acoustic waves coupled with water droplets technology can broaden the optimal agglomeration frequency range, reduce the influence of acoustic power, and effectively improve agglomeration efficiency. Water droplets with a concentration of 40 g/m 3 were added at the acoustic frequency of 1.5 kHz and the acoustic power of 10 W to achieve the safe escape threshold for personnel within 30 s of working while reducing the damage to the human ear caused by the high sound pressure level. • A new method to eliminate fire smoke is proposed. • The addition of water droplets can expand the range of agglomeration frequencies. • 50% reduction in required agglomeration time. • The addition of water droplets can reduce the acoustic power input. • Reduces damage to the human ear from high sound pressure levels.