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Acoustic treatments for existing plants

Acoustic treatments for existing plantsNoise pollution is increasingly problematic across the UK and into Europe. While we may not be aware of the effects of this pollution on our health, there certainly are impacts on our well-being.

It is easy to undermine the long-term implications of being annoyed and the continued disturbance to sleep. However, there are real consequences for cardiovascular and metabolic systems. Noise pollution has been linked to cognitive impairment in children due to the barrier to learning to read in school. According to an EU report, noise contributes to 48000 new cases of ischaemic heart disease and 12000 premature deaths.

When your plant was built, it was likely relatively isolated and out of the local community’s ‘hear-shot’. However, with the continued development of land for housing, residential properties are coming close to these sites, raising the issue of noise pollution.

There are several options available to existing plants to reduce the noise emitted. Here we explore some of these methods.

Change noisy fans

Old fans are noise; they are prone to collecting debris that means they grow noisier with age. Also, new technologies mean that more modern fans are naturally quieter. Consequently, the first step to noise reduction is to replace loud fans throughout your plant. You would be surprised at the difference such a simple service from Transcool Systems could make.

New technologies in fan production include scarf inlets, active noise control, forward-swept fans, swept and leaned stators and trailing edge blowing, and the use of acoustic treatment of the fan itself. In short, installing newer fans naturally reduces noise from your plant, as these models are designed to combat the sound created by turbulence.

Creating enclosures

Generally, these are made from acoustically treated rigid plastic or metal and have multiple applications. Firstly, it houses the plant in a single unit, not only providing a means of controlling sound waves, but protecting the plant from the external environment.

Acoustic lining

Bespoke silencers, acoustic lining of the inlet and exhaust cowls and lining floors, ceilings, and walls are all additional methods of noise reduction available to be deployed on your building or plant. The aim would be to absorb sound before it propagates out of the inlet and exhaust cowls.

A lot of work has been done for the airline industry for jet engine design which has been very effective in reducing the noise pollution emitted from aircraft. Airlines have used such methods on commercial aircraft because of the proven impact of “stress, annoyance, sleep deprivation and hypertension”. The same basic principles can be used in the noise control of your plant within your building.

In short

Acoustic treatments for existing plants are about managing your environmental impact on the surrounding area. It is too easy to perceive pollution as a gas or a liquid. Yet, the effect of noise pollution over time can be as deadly as other poisons you choose to control.

Transcool Systems can design and noise reduction strategies for your plant. Contact us today to see how we can help you integrate soundlessly into your community.