The Best Ten Noise Reduction Methods

Posted by Thomas Shaw on March 10th, 2020

Listed below are 10 easy-to-apply, cost-effective noise reduction strategies that may be used correct across sector. Get extra information about industrial silencer


1. Damping



Normally used in applications such as chutes, hoppers, panels and tanks, damping typically uses two noise reduction procedures: layer damping, in which a layer of bitumastic damping material is stuck to a surface, and constrained layer damping, that is additional rugged and involves building of a laminate.



Maxideck and Maxiboard from Sound Reduction Systems (SRS) can help with soundproofing for floors. Maxideck, an acoustic flooring solution, can be used in kitchens and bathrooms. It offers high levels of airborne and impact insulation when used on timber. It might be used to comply using the Developing Regulations Approved Document E (2003), is simple to install and is only 28mms thick.



Maxiboard soundproofing for ceilings and floors may also support meet Portion E Regulations and may be used to type enclosures and independent structures. It requires screws and nails direct, and is exceptionally durable, however only 17mms thick.



2. Fan installations



Curiously, when fans operate at peak efficiency, they're at their quietest. Frequent noise reduction characteristics are bends close for the fan and dampers. To cut down on up to 12 dB, ensure a minimum of 2-3 duct diameters of straight duct amongst any feature that may well disturb the flow plus the fan itself.



3. Ductwork



Commonly used in extraction, ventilation and cooling, ductwork involves openings in walls and enclosures. As an alternative to fitting silencers, it truly is often doable to achieve a 10 - 20 dB reduction in airborne noise from a duct or opening by lining the final bend in the ductwork with foam or fibreglass, or constructing an absorbent, lined right-angled bend to fit on the opening.



SRS has two products that may be used. Acoustic Socket and service boxes are made from two layers of 10mm-thick high-density gypsum-based board and can assure the acoustic integrity of any metal or timber-framed separating wall containing sockets and/or services. Meanwhile, Soundstop 5 is usually a multi-purpose acoustic barrier that's perfect for ceiling voids or within partition walls. It reduces room-to-room noise by as much as 46dB.



4. Fan speed



In axial or centrifugal flow fans, you may increase noise control merely by altering control systems or pulley sizes and resetting dampers.



5. Pneumatic exhausts



Pneumatic exhaust noise is usually decreased by as much as 30dB by fitting silencers. For back pressure, fit a bigger coupling and silencer; for clogging, you may need a straight-through silencer, whilst several exhausts might be manifolded into a single, larger diameter pipe.



6. Pneumatic nozzles



Pneumatic nozzles are generally used for cooling, drying and blowing. You could generally replace the existing nozzles for quiet, high-efficiency units that can lessen noise by as much as 10 dB.



7. Vibration isolation pads



Typically used on machine feet, pumps and mezzanine installations, vibration isolation pads are often created of rubber or bonded cork and decrease vibration and noise pollution.



SRS's Acoustilay system is ideal for beneath washing machines. It improves the sound-insulation performance of timber floors and substantially reduces influence noise by way of concrete and timber floors. Acoustilay is merely laid under most floor finishes and can replace standard carpet underlay.



8. Current machine guards



In an open set of machine guards, halving the 'gap' open region can lower noise pollution by 3 dB. Lowering the openings, like flexible seals, by 90% can reduce noise by 10 dB.



Maxiboard with Coustifoam lining is ideal for this. Coustifoam is definitely an acoustic lining to soffits or walls, or may be laid over the back of open-cell suspended ceilings. Its flexibility permits it to be very easily formed about penetrations or contours.



9. Chain and timing-belt drives



Quieter timing belts with unique tooth profiles aimed at controlling noise can replace noisy chain drives. A brand new style of belt for noise-critical applications uses a chevron tooth pattern which will reduce noise by as much as 20 dB.



10. Electric motors



The electric motors that drive fans and pumps is usually replaced by general-duty motors which are as much as 10 dB quieter. These can be phased in to the system more than a period of time.