With the improvement of the quality of life, industrial closed cooling towers have slowly become popular, noise pollution has become an urgent problem, many factories began to find ways to reduce the noise brought by cooling towers. So, how can we reduce the noise of cooling towers?
　　Noise is generated by vibration, and the source of our closed cooling tower noise is mainly from: water shower sound, fan noise, pump vibration sound. Its noise sometimes vibration range impact may involve the surrounding 30 to 50m, so it can be seen that the closed cooling tower noise is really very powerful. The main methods to solve the noise are: blocking the noise transmission, increasing the sound insulation cotton, replacing a low speed fan, etc.
　　The principle of noise reduction is important: noise spreads mainly by air, building and ground, where the main way is through the air. If sound barriers are added around the area, the relative sound will be refracted and reflected many times, and as the number of reflections and distances increase, the decibels of sound will gradually decrease. The sound of drenching, fan noise and pump vibrations are different and their noise frequencies are different, so I recommend setting the sound barrier around the cooling tower.
　　The sound barrier is very selective, there are FRP, aluminium alloy and brick wall, we can choose according to their characteristics, FRP and aluminium alloy should be designed with night song curvature to reflect the sound downwards, so that it can reflect downwards to a greater extent, brick wall is sand surface design, the surface noise can reflect the sound at different angles and long service life.