Impedance composite silencing static pressure box

Detailed introduction of impedance composite silencing static pressure box

Impedance composite typeSilencing static pressure boxThe principle of using a combination of resistive and anti type mufflers can eliminate low, medium, and high frequency noise.

The impedance composite sound-absorbing static pressure box has acoustic filtering devices such as resonance chambers, expansion chambers, and perforated screens. It combines the good high-frequency sound-absorbing characteristics of resistive mufflers with the good low-frequency sound-absorbing characteristics of impedance mufflers. Therefore, it has a wide sound-absorbing frequency band and is one of the most commonly used standard sound-absorbing series. The suitable wind speed is 6-8 meters per second, with a maximum of 8-12 meters. It can be used alone or in series. Noise reduction effect: Low frequency of 10-15 dB/m, medium frequency of 15-25 dB/m, high frequency of 25-30 dB/m, with an average drag coefficient of 0.4. According to "Air Conditioning", soundproof elbows and soundproof static pressure boxes are both types of mufflers.