Here are 10 easy-to-apply, very affordable noise reduction solutions that can be used correct across industry. Get more info about engine silencers
1. Damping
Usually used in applications including chutes, hoppers, panels and tanks, damping generally uses two noise reduction strategies: layer damping, in which a layer of bitumastic damping material is stuck to a surface, and constrained layer damping, that is more rugged and includes building of a laminate.
Maxideck and Maxiboard from Sound Reduction Systems (SRS) can help with soundproofing for floors. Maxideck, an acoustic flooring solution, may be used in kitchens and bathrooms. It offers higher levels of airborne and effect insulation when used on timber. It can be used to comply using the Developing Regulations Approved Document E (2003), is easy to set up and is only 28mms thick.
Maxiboard soundproofing for ceilings and floors can also aid meet Portion E Regulations and can be used to form enclosures and independent structures. It takes screws and nails direct, and is exceptionally tough, however only 17mms thick.
2. Fan installations
Curiously, when fans operate at peak efficiency, they are at their quietest. Typical noise reduction attributes are bends close to the fan and dampers. To cut down on up to 12 dB, make sure a minimum of 2-3 duct diameters of straight duct between any feature that may disturb the flow and the fan itself.
3. Ductwork
Usually used in extraction, ventilation and cooling, ductwork includes openings in walls and enclosures. In place of fitting silencers, it is normally doable to achieve a 10 - 20 dB reduction in airborne noise from a duct or opening by lining the final bend within the ductwork with foam or fibreglass, or constructing an absorbent, lined right-angled bend to match on the opening.
SRS has two products that could be used. Acoustic Socket and service boxes are created from two layers of 10mm-thick high-density gypsum-based board and will guarantee 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 is ideal 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 could improve noise control merely by altering control systems or pulley sizes and resetting dampers.
5. Pneumatic exhausts
Pneumatic exhaust noise is often lowered by as much as 30dB by fitting silencers. For back pressure, fit a larger coupling and silencer; for clogging, you may need a straight-through silencer, though various exhausts may be manifolded into a single, larger diameter pipe.
6. Pneumatic nozzles
Pneumatic nozzles are generally used for cooling, drying and blowing. You'll be able to normally replace the existing nozzles for quiet, high-efficiency units which will reduce noise by as much as 10 dB.
7. Vibration isolation pads
Usually used on machine feet, pumps and mezzanine installations, vibration isolation pads are usually produced of rubber or bonded cork and minimize vibration and noise pollution.
SRS's Acoustilay system is best for beneath washing machines. It improves the sound-insulation efficiency of timber floors and substantially reduces impact noise through concrete and timber floors. Acoustilay is merely laid beneath 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 reduce noise pollution by 3 dB. Minimizing the openings, including flexible seals, by 90% can reduce noise by 10 dB.
Maxiboard with Coustifoam lining is ideal for this. Coustifoam is an acoustic lining to soffits or walls, or can be laid over the back of open-cell suspended ceilings. Its flexibility makes it possible for it to be easily formed about penetrations or contours.
9. Chain and timing-belt drives
Quieter timing belts with different tooth profiles aimed at controlling noise can replace noisy chain drives. A new variety of belt for noise-critical applications uses a chevron tooth pattern which can cut noise by as much as 20 dB.
10. Electric motors
The electric motors that drive fans and pumps may be replaced by general-duty motors which might be up to 10 dB quieter. These is usually phased in to the system more than a time period.
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