When one is looking to control the noise emissions of a Heating Ventilation and Air Conditionning (HVAC) facility outside a building (either industrial or not), ITS offers a wide range of noise limitation devices for Air Handling Units (AHU) for all applications related to acoustical insulation / soundproofing / prevention of noise nuisance with respect to environment.
ITS offers powerful solutions at a reasonable cost in response to all the needs in the matter of soundproofing (preventive or curative) by the means of equipment (standard or tailor made) for which the quality of design and of execution meets the highest level of requirement in this area for an efficient fight against noise.
The noise limitation devices for Air Handling Units (AHU) offered by ITS allow (depending on the case) to limit noise due to outdoor air intake, and in the case of a double-flow installation, to limit also the noise due to its rejection (exhaust) - since this is the operating principle of a Heating Ventilation and Air Conditionning (HVAC) if it is not with single-flow.
The sound levels in the environment can thus be kept below the limits fixed by the regulations to avoid any disturbance for neighborhood, in particular when the Air Handling Unit (AHU) is installed on roof terrace or for the occupants of a building (residential or office block), especially when the Air Handling Unit (AHU) is installed in a one-storey configuration, sometimes just under the windows of the ground floor / garden level.
The noise limitation devices for Air Handling Units (AHU) marketed by ITS can allways be disinstalled for maintenance actions.
They are usually made of metallic splitters with a mineral fiber filling (and make depending on the case: walls and/or roof of the housing aiming at noise limitation). Some of those construction elements may have an insertion loss Di that can reach 50 dB as a standard for medium high frequency (a higher performance can be obtained by the means of special constructions). Depending on the context, attenuators being either dissipative (i.e. with mineral fiber filling) or resonant (i.e. with a vibrating surface device to selectively absorb sounds at certain frequencies) are envisaged.
Regarding products and construction systems proposed by ITS their performance is measured in laboratory according to the current standard:
- ISO 7235 Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
The noise limitation devices for Air Handling Units (AHU) proposed by ITS can be delivered as a kit ready to assemble with assembly instructions or be installed turnkey.
A guarantee of acoustic performance on site is issued for each installation of noise limitation devices for Air Handling Units (AHU). The verification can be conducted according to standard NF EN ISO 11820 Acoustics - Measurements on silencers in situ.
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noise limitation device |
The noise limitation devices for Air Handling Units (AHU) offered by ITS are robust constructions with quality finishes ensuring a high durability and for which a precise sizing and a tailor made design allow to optimize the aerodynamic performance for an appropriate operation of the equipment and a maximal performance.
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Silencer splitter (baffle) for air inlet / effluents outlet in industrial process |
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Sorry, no dedicated brochure downloadable presently (however: available equipment) |
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See the frequently asked questions related to this equipment |
In some cases (especially if several equipments are involved), noise limitation devices for Air Handling Units (AHU) are integrated in works for managing access and preventing the phenomenon of recycling. Such works include partitions (with acoustic performance) for performing the binding and to ensure continuity of sound insulation between the soundproofing equipment for openings that are silencers for chillers / cooling systems with respect to such works.
They are usually made of coated metallic soundprrofing panels with an insulation made of mineral fiber (walls, roof and if needed: floor) and equipped with painted metallic acoustic doors (rotating or sliding) and of acoustic windows with safety glass.Some of those construction elements may have a sound reduction index Rw that can reach 52 dB as a standard (a higher performance can be obtained by the means of special constructions).
Regarding products and construction systems proposed by ITS their performance is measured in laboratory according to current standards:
- their sound reduction index according to the standards NF EN ISO 140-3 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: laboratory measurement of airborne sound insulation of building elements and EN NF 717-1 Rating of sound insulation in buildings and of building elements Part 1: airborne sound insulation
- their sound absorption coefficient according to the standards NF EN ISO 354 Acoustics - Measurement of sound absorption in a reverberation room and NF EN ISO 11654 Sound absorbers for use in buildings - Rating of sound absorption
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Metallic acoustic door set |
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Metallic acoustic insulation panel with 1 absorbing face |
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Metallic acoustic insulation panel with 2 absorbing faces |
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Metallic acoustic insulation panel without any absorbing face |
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Metallic acoustic window set |
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Silencer splitter (baffle) for air inlet / effluents outlet in industrial process |
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Sorry, no dedicated brochure downloadable presently (however: available equipment) |
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See the frequently asked questions related to this equipment |
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See the frequently asked questions related to this equipment |
ITS offers noise limitation devices for Air Handling Units (AHU) to improve acoustic comfort in buildings and to avoid sound nuisance (emergence) for neighbors
Noise diminution device for Air Handling Units (AHU), noise limitation device for Air Handling Units (AHU), noise reduction device for Air Handling Units (AHU), silencer for Air Handling Units (AHU), soundproofing kit for Air Handling Units (AHU): all equipment that one can source thanks to Isolation Technologie Services (ITS).