The ventilation system may or may not include air conditioning, dehumidification and humidification. In addition, certain types of equipment are very sensitive and require very strict control of temperature and / or humidity inside the enclosure. When designing the ventilation system of an acoustic enclosure, the amount of heat generated inside must be taken into account, including equipment (watt), but also the number of people working inside, computers, lights and any other element producing heat. In many cases, the heat must be removed from the enclosure to avoid overheating of the machine. The engine and other systems of a machine produce a variable amount of heat. #6 Do you need ventilation inside the noise enclosure? With performant acoustic windows, several options are possible without compromising the acoustic performance of the enclosure. You may chose all types of doors from a single door to an automatic sliding door.
Hexahedron speaker enclosure design windows#
#5 How many doors, windows and removable panels are required? What is their size and where will they be located?Īccess restriction to machinery can be a negative side to acoustic enclosures, it is therefore important when designing the enclosure to include the doors, windows and any other access necessary to operate, monitor and maintain machinery. Different types of access panels can be engineered for maintenance, from the simple removable panel to the oversized motorized door. The acoustic enclosure can be partially or fully disassembled. #4 What type of access to the equipment is required? Is access necessary daily or only for major maintenance?ĭo you need access to all machinery or only to certain sections? A custom engineered enclosure allows you to design the enclosure according to your specific needs. inlet and outlet for entry and exit of the product.discharge of waste and pollutants (dust, oil mist, gas).utilities, fluids (compressed air, electricity).ventilation (fresh air compensation, heat, humidity, condensation).Examples of potential penetrations include: When designing the enclosure, every opening must be thought through and acoustically insulated to prevent noise from escaping the enclosure. Where it is not possible to enclose the machinery, a control room, an operator’s cab or any other type of soundproof chamber may be used to isolate the operators from the noise rather than the machinery from the operators. If you have space restrictions around the machinery, sliding doors can be a practical solution to allow proper access to equipment. Will the sound enclosure be close to the machinery? Will any operators be working inside? Is it a complete or partial enclosure?Īll contact between the machinery and the enclosure must be avoided to maintain the acoustic performance of the enclosure. The interior and exterior dimensions of the enclosure must be determined. #2 What are the dimensions of the sound enclosure?
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A noise reduction of 70 dB can even be achieved by using multiple-layer walls. A Mecart-brand enclosure with our vibration-dampening system can easily achieve a reduction of 35 to 55 dB. For an acoustic reduction of only 5 to 10 dB an acoustic barrier (one or several walls) will often be sufficient, but for a higher acoustic reduction, a partial or complete enclosure is recommended. The desired level of soundproofing will determine the type of engineering noise control to be chosen. This calculation has been simplified for the purpose of the explanation whereas in reality, the computation is much more complex because the octave bands (high and low-pitched sounds/ high and low frequency) must be taken into account. This will be referred to as a STC-35 acoustic enclosure. For example, for a machine producing a noise level of 120 dB (A), the sound reduction of the enclosure should be 35 dB (120 dB (A) – 35 dB (A) = 85 dB (A)). Ideally, the acoustic enclosure must reduce noise levels below 85 dB (A) (decibel), which is the legal limit in most Canadian provinces. To calculate a desired soundproofing the sound produced by machinery can be measured with a sound level meter. #1 What sound reduction are you looking for? (current and desired level)
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The following 8 questions will help clearly define your needs and make discussions with your noise enclosure manufacturer easier.