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Acoustic enclosures are essential and effective accessories for suppressing noise when running generators. They come in different styles that serve specific functions and purposes. Knowing these types helps people choose or recommend the right kind of enclosure based on individual needs.
These types of enclosures are meant to be used outdoors all year round. That means they are rainproof, rustproof, and protective against UV rays and any other extreme weather conditions. There are even enclosures designed for use in low-temperature environments. All-weather enclosures are usually made with thicker materials than regular enclosures. The materials are combinations of soundproofing and weather-resistant qualities.
A mobile acoustic generator housing is frugal, light, easy to move around, and therefore transportable. While some mobile enclosures offer great noise cancellation capabilities, they also incorporate portability. Portability may be achieved, for example, with on-wheels enclosures, foldable ones, or those that can assembled within a short time upon necessity. Mobile soundproof generator covers are used on construction sites, mounting towers, or any temporary works.
An automatic generator sound barrier for permanent enclosures is typically built using fixed materials. There is no mobility for this type of acoustic enclosure; it is static, installed around the generator, and is usually anchored to the foundation. Fixed enclosures are more robust than temporary or mobile covers and may provide better soundproofing as they are designed for long-term use.
Pod-type enclosures are usually placed around the generator. They look like a pod sitting around the equipment. Compared to other types of sound enclosures, acoustic pods provide superior noise cancellation capability. They are usually more extensive than enclosures that can be installed permanently around the generator. Acoustic pod-type enclosures have openings with special acoustic baffles to accommodate cables and pipes.
A wrap-around generator soundproof cover fits snugly around the equipment like a blanket. These enclosures, which wrap around the generator, are usually portable, temporary structures that can set up anywhere the equipment is located. Due to their design, they can provide adequate soundproofing. However, compared to fixed enclosures, their soundproofing properties are usually less effective. Acoustic enclosures that wrap around the generator are made from flexible materials that allow easy manipulation around the equipment.
Many of the generators in residential areas are smaller home standby ones used for backup power. There is the option of installing a manual or an automated outdoor generator that is connected to the house power supply. All these generators create noise, which can be a nuisance to other residents in the neighborhood. To prevent this, acoustic enclosures encapsulate the generator, which minimizes the noise it produces.
Most telecom equipment is mission-critical and requires non-stop power. They use generators as backup power sources in case the mains electricity fails. These generators can be diesel or gas-fueled, but all tend to be very noisy. On the other hand, enclosures have been identified as the easiest way to ensure continuity of power without necessarily breaking noise regulations.
On construction sites, generators are mainly used for powering tools, equipment, and work-related activities. However, not all the activities that take place at the construction sites are pleasant. Other generators, besides the usual activities, can also be very noisy, particularly when evening falls. That is why construction companies have to deal with the noise, either by enclosing it or using any other means available to reduce its impact. Thus, on-site workers will be more focused, and people living near the site will not be disturbed by the noise.
The generators used in such operations tend to be very big and produce immense noise levels. One generator in such areas can legally require acoustic treatment even if it is operated for a short time each day. Moreover, there might be many enclosures operating simultaneously, which must all be compliant with legal requirements. In these industries, enclosures are mandatory, not optional, because they ensure legal compliance and continuity between operations.
Acoustic enclosures are necessary in areas where there is no grid power, and reliance on generators is the only option. The area could be a Pacific island or an oil rig in the North Sea. It doesn't really matter where exactly as long as its occupants are using generators; acoustic enclosures help make the noise more bearable.
The main function of the enclosures is to protect the generators from different weather conditions and any external interference. Typical enclosures are usually made from galvanized steel with a zinc coating or powder-coated steel that binds the paint for extra weatherproofing. There are also more exotic materials like stainless steel or aluminum.
The sound-insulating materials used for the panels and roofs have a mean acoustic absorption coefficient above 90% across most sound frequencies. They also block any raindrops or hail that may fall on them. They are not only soundproof but also weatherproof. Commercial metal panels roofs have short exposure on low slope roofs of 90 A for five years or 45 B for the typical working life beyond 15 years in environments of moderate to heavy exposure to salt, humidity, and pollutants.
Wrap the acoustic enclosure around the generator and stretch it to fit snuggly around every part of the equipment. The elasticated closures will help hold the material taut without being restrictive or causing overheating. Some enclosures even have zips or Velcro that securely fastens the wrap to prevent it from blowing away in strong winds.
Most acoustic enclosures are portable and easy to set up. They are typically made from lightweight materials like galvanized steel with a zinc powder-coated finish that are easy to manhandle. They fit around the generator like a blanket and can usually be assembled without tools.
Sound enclosures aim to create a safe environment for operating generators without the risks associated with prolonged exposure to high noise levels. Acoustic enclosures are used around generators, usually at construction sites, on oil rigs, in mines, and around telecom stations. Exposure to loud noises can lead to hearing loss, high blood pressure, and cardiovascular disease. Moreover, working with a generator inside an enclosure is generally much more comfortable. One does not have to worry about the noise level. Overall, enclosures increase productivity and, most importantly, protect workers from health hazards.
Enclosures are typically made from various weatherproof materials, including steel, aluminum, polycarbonate, high-density polyethylene, and acoustic materials. Acoustic treatments inside enclosures can be regularly wiped down to remove dust or treated with special acoustic materials to keep them in good condition over time.
Rusting is a common problem that affects any man-made structures, including generator soundproof boxes. It is usually caused by salt, high humidity, extreme temperatures, pollutants, or even just age. While many enclosures have a galvanized coating that prevents rusting from appearing on early sets of enclosures, over time, even the best enclosures will start to show signs of rust. Regular inspections of the enclosures should be done so that any early signs of rust can be addressed before they become a huge problem.
Steel generators typically come with a powder-coated paint finish after they are galvanized. Galvanization is the process of applying zinc to the steel to protect it from corrosion. This includes the end steel's fine coating, which will help prolong the life of the enclosure. After time or in certain corrosive environments, the paint will wear off, and rust will start to appear. The best way to treat rusted enclosures is to sand the affected area and apply a fresh coat of paint.
This is a kind of thermoplastic that is translucid and very strong. It does not break easily and is therefore a good option where there are flying stones and extreme weather conditions. It has an inherent UV filter that prevents skin damage and retinal harm. Enclosures are made of this material and are ideal for the remote environment, especially the tropics, or for people working on offshore oil rigs. It is free from chemical and physical wear and tear as well as impact protection. Possible discoloration may occur over time, which can be checked by many exterior washes or even providing ventilation for flow through the housing.
Unlike other thermoplastics, which may be brittle, high-density polyethylene is tougher. It has a low density and will not corrode, absorb water, or even become a home for marine creatures. It can jauntily withstand electric currents and is very cost-effective. Just like other plastics, HDPE acoustics enclosures should be replaced if any visible damage is found.
The materials inside generator soundproof covers have a mean acoustic absorption coefficient above 90% across most sound frequencies. Acoustic panels or foam with a specially engineered surface are inside most enclosures. They greatly absorb sound waves to limit echo and improve sound isolation in the space around the generator.
The Acoustic panel outside surfaces are usually smooth heat-treated knitted fabrics, PVC curtains, or quilted liners. These acoustic panels can be cleaned and replaced depending on the maintenance schedule and enclosure usage. Acoustic foam inside the enclosure can degrade over time from exposure to heat, pollutants, or just normal wear and tear. Replacing it every so often will ensure the enclosure performs at its best.
A1: Acoustic enclosures can typically reduce noise levels by 20-30 decibels, depending on the construction materials and design. This significant reduction can often bring generator noise down to a more acceptable level for regulatory compliance.
A2: Yes, there is the possibility of heat build-up inside generator acoustic covers, particularly if there is not adequate ventilation. Many enclosures are fitted with ventilated panels or louvered doors to allow the free passage of air in and out and keep within it a bearable temperature.
A3: Yes, most acoustic enclosures are designed to be weatherproof, protecting generators from rain, snow, UV radiation, and other elements. They are made from durable, weather-resistant materials such as galvanized steel, polycarbonate, or HDPE.
A4: Acoustic enclosures can be used for most types of generators, including diesel, gas, and electric. However, specific designs and features may vary depending on the generator type and application.
A5: The adjustment of the enclosure must be according to the size of the generator. It needs to be a snug fit so that the sound cannot easily escape. At the same time, there should be adequate space for the heat outlets and air ventilation inlets, which are essential for maintaining optimal operating conditions.
