‘’Out of sight is out of ears’’ can be referred as the basic principle of blocking or diffraction of longer wavelength or same wavelength size than the barrier size. An acoustic barrier (sometimes also called a ‘noise barrier’) is designed to protect people close to the source of a noise. Common noises which can be treated with acoustic barriers include construction work, industrial sites, roads/motorways, and quarries. Sound absorptive surfaces reduce the reverberant build up between parallel barriers and other reflective surfaces- this enhances the ability of barrier to attenuate noise.
Aircoustics products and structures are designed to build in accordance with numerous international standards and specifications. AFZE has been assessed and accredited with the ISO 9001: 2008 Quality standard.
Aircoustics designed AAB model is a range of acoustic barrier which Offer exceptional transmission loss i.e., 14 Db at 125 Hz**.
** Sound data is available upon request- for more information on design and product please contact our sales office.
** Design calculation for barrier is available by our expert Acoustic Engineers. **
Aircoustics offers complete design, manufacturing and installation services including all necessary structural steel work or an expert supervision is provided to ensure the performance is not hurt.
- AAL-1045: 100 mm blades with 33.8% free area.
- AAL-1545: 150 mm blades with 30% – 40% free area.
- AAL-2035: 200 mm blades with 31.5% free area.
- AAL-3035: 300 mm blades with 33.13% free area.
- AAL-3045: 300 mm blades with 26.00% free area.
AALD 2035/ 3035: Usually designed to have both sound absorptive and improved STL characteristics. Material could be Aluminum or Steel as per specifications.
- AALD-2035: 400 mm blades with 33% free area
- AALD-3035: 600 mm blades with 33.13% free area
MATERIAL
- Louvers are with mill finish in standard Aluminum construction.
- Blades are of extruded aluminum with water drain
- Frame is of extruded aluminum with vertical drain channel, joined with corners and screws
- Profile Length/ thickness**
- The construction is with stationery airfoil blades or rectangular ones.
- The construction material can be as per specification i.e., Aluminum/ GI/ Stainless steel.
- Coating – Baked enamel/ Kynar/ Anodized/ prime coat finish etc.
- Color as per Specifications can be provided**
BENEFITS
- Multi section possibility in design enables ease to assemble at site
- Water penetration 0.01 oz/ ft2 of free area**
- Sound Reduction Index (SRI) tested in independent laboratory as per BS ISO EN 140-3:1995 standards (SRL certified)
APPLICATION**
- Suitable for open noise sources installation needs ventilation yet noise reduction is desired.
- Generator rooms
- Mechanical room
- District cooling plants/ cooling towers/ chillers/ pumps
- Mechanical equipment on roof- to avoid the noise transmission to adjacent buildings
