Fan Noise Reduction

could save you £ thousands

Dust extract fan noise reduction : food industry - sweet manufacture

A sweet factory received complaints of noise disturbance due to a loud "hum" sound that was keeping local residents awake at night. The source was a dust extract fan that exhausted air through the factory wall. A normal industrial noise control silencer would not have provided enough reduction in the fan noise - a very high noise reduction was needed. So, we purpose-designed a silencer specifically for this fan. Because the "hum" was the most noticeable and annoying feature of the fan noise, we designed the silencer specifically to provide a very high noise reduction at the "hum" frequency.

The silencer was a highly successful noise control solution, reducing the "hum" by a massive 25 dB, making the fan inaudible at the nearest house.

Fan hums, drones and whines are a very common cause of industrial noise nuisance. A purpose-designed silencer is a noise control solution that can be fitted to any type of fan, providing the twin benefits of high noise reduction and very low flow resistance. Low flow resistance is important to avoid impairing fan suction or extraction performance. To achieve a high noise reduction, common types of industrial silencer usually have acoustic absorbent splitters located within the airflow, and this can create a very high flow resistance, increasing the load on the fan and lowering the fan airflow. A purpose-designed silencer avoids this problem - it can provide a higher noise reduction than a standard silencer, and with considerably lower flow resistance.

Some more fan noise control examples are shown on the Industrial Noise Control - Noise Nuisance and the Industrial Noise Control - Noise at Work pages of this web site with costs.

To find out how we can help you to control fan noise / find a solution to a fan noise nuisance problem, or to receive our company brochure or a quotation, please click on contact us for fan noise reduction and control.