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Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes
It has been demonstrated that a staggered window achieves better noise reduction performance than a traditional single glazing one at middle to high frequencies while maintaining a degree of natural ventilation. There is, however, little improvement in the low frequency range. In contrast, this work...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7973537/ https://www.ncbi.nlm.nih.gov/pubmed/33737650 http://dx.doi.org/10.1038/s41598-021-85796-0 |
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author | Wang, Shuping Tao, Jiancheng Qiu, Xiaojun Burnett, Ian S. |
author_facet | Wang, Shuping Tao, Jiancheng Qiu, Xiaojun Burnett, Ian S. |
author_sort | Wang, Shuping |
collection | PubMed |
description | It has been demonstrated that a staggered window achieves better noise reduction performance than a traditional single glazing one at middle to high frequencies while maintaining a degree of natural ventilation. There is, however, little improvement in the low frequency range. In contrast, this work proposes to apply coiled-up silencers consisting of coupled tubes on the side walls of staggered windows to obtain noise attenuation in a broad band, especially in the low frequency range. Each element in the silencer consists of two coupled tubes with different cross sections so that noise at more frequencies can be attenuated than that with a uniform cross section. The simulation results show that 8.8 dB overall insertion loss can be obtained between 100 and 500 Hz after applying a combination of silencers designed at 7 different frequencies, and the insertion loss of the staggered window is increased from 6.7 to 15.6 dBA between 100 and 2000 Hz for normal incident traffic noise with the proposed silencers installed. The design is validated by the experiments with a 1:4 scale down model. |
format | Online Article Text |
id | pubmed-7973537 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-79735372021-03-19 Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes Wang, Shuping Tao, Jiancheng Qiu, Xiaojun Burnett, Ian S. Sci Rep Article It has been demonstrated that a staggered window achieves better noise reduction performance than a traditional single glazing one at middle to high frequencies while maintaining a degree of natural ventilation. There is, however, little improvement in the low frequency range. In contrast, this work proposes to apply coiled-up silencers consisting of coupled tubes on the side walls of staggered windows to obtain noise attenuation in a broad band, especially in the low frequency range. Each element in the silencer consists of two coupled tubes with different cross sections so that noise at more frequencies can be attenuated than that with a uniform cross section. The simulation results show that 8.8 dB overall insertion loss can be obtained between 100 and 500 Hz after applying a combination of silencers designed at 7 different frequencies, and the insertion loss of the staggered window is increased from 6.7 to 15.6 dBA between 100 and 2000 Hz for normal incident traffic noise with the proposed silencers installed. The design is validated by the experiments with a 1:4 scale down model. Nature Publishing Group UK 2021-03-18 /pmc/articles/PMC7973537/ /pubmed/33737650 http://dx.doi.org/10.1038/s41598-021-85796-0 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Wang, Shuping Tao, Jiancheng Qiu, Xiaojun Burnett, Ian S. Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title | Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title_full | Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title_fullStr | Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title_full_unstemmed | Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title_short | Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
title_sort | broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7973537/ https://www.ncbi.nlm.nih.gov/pubmed/33737650 http://dx.doi.org/10.1038/s41598-021-85796-0 |
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