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How does a silent diesel generator work?

Generators, especially diesel ones, can be very loud. This is a problem, as they can damage the hearing of those who have to work in close proximity to them and be a nuisance for those who work or live nearby. In order to combat this problem, silent generators were created. A silent generator operates inside a soundproof container or generator enclosure which will muffle the sound of a generator.

Silent Generator

Silent diesel generators use composite materials in a generator enclosure. Usually, these are layers of hard material which bounce the sound energy back into the enclosure. They also use soft, porous materials which absorb the sound energy, converting it into heat.

Different materials absorb different sound frequencies better than others. Some materials might be very good at absorbing sound at high frequencies, but poor at the lower end. To combat this, most silent generators use different materials in several layers.

Higher frequencies are best absorbed by porous materials, which channel the smaller sound waves deep into the material which then absorbs them. Lower frequency sounds are harder to silence. The waves of lower frequency sounds are sometimes deflected or absorbed by heavy layers of material, which are resistant to movement. The best results for deadening lower frequencies come from using air pockets. Thin panels of material are separated by shallow air gaps. This creates a resonance effect to make the low-frequency sound into a higher pitch. This pitch can then be better absorbed by the porous materials.

A generator enclosure will be engineered for a particular type of generator or a specific model, in order to make sure the soundproofing is as effective as possible at absorbing the range of sound produced the generator.

How loud is your generator?

Sound levels are usually measured in decibels. Anything above 80 decibels is considered ‘loud’. Once sound levels reach 100 decibels, this can become uncomfortable, and can even be painful for some people to hear once the volume gets to 140 decibels.

The noise produced by a generator can be measured in a linear scale, which weights all sound frequencies equally. An audible scale is more helpful, as this only takes into account the sounds that humans can actually hear.

How silent is a silent generator?

There is a gap between how much noise is reduction is actually possible and how much is commercially feasible. A drop in the noise of around 40 decibels is genuinely what is considered the limit of a noise reduction that is practical.

With our silent diesel generators, you can reduce the noise dramatically. Our canopies feature a residential silencer and high-quality soundproofing which ensures that the levels of noise produced by your generator are greatly reduced. The canopies we produce ensure performance in outdoor environments.

Our canopies are designed to provide our customers with a generator that is simple to use and is easy to look after. They’re made to with functionality in mind and have great maintenance access so you can the generator running easily.

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