In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 131, No. 4_Supplement ( 2012-04-01), p. 3421-3421
Abstract:
Generally shading louver are used for shading and natural ventilation, but in noisy urban area, sound insulation is necessary, in the trend of green building design, shading natural ventilation and insulation are taken the same weighting, but it is contradictory, meanwhile, the performance of water proof also required in louvre. In study, we try to use oblique micro-perforated for shading louvre, and reach it sound insulation. Acoustics louvres normally use in silencers for Air conditioning duct, it is composited by Perforated plate any glass fiber, for the water proof season, we use oblique micro-perforated instead of glass fiber, and design and some influence factors those are specified of form, blade length, blade width, blade angle and air gap and blade is composed of an infill of sound absorption material enclosed by perforated sheet material, sound insulation of an acoustic louvres generally is not high, particularly at low frequencies. We designed several type of the louver and test it acoustical performance, and discussed it is low, median. high frequencies. Finally, we calculate it's Rw by ISO 140, by the way, we also asses it ventilation, lighting, shading, affect, it is very important in green building.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2012
detail.hit.zdb_id:
1461063-2
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