Noise Reduction Interventions in the Urban Environment as a form of Control of Indoor Noise Levels

Magrini, Anna; Lisot, Aline

doi:10.1016/j.egypro.2015.11.246

Cited by 13 publications

(4 citation statements)

References 2 publications

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“…In previous studies on the impact of wind turbine noise in residential areas, noise levels that the residents were exposed to were normally calculated in terms of A-weighted sound pressure levels (SPLs) outside their dwelling, based on outdoor sound propagation formula [14,15], which mainly present the noise at the most exposed place but consider less the variance among all the façades of the building. Since buildings are threedimensional objects, identifying the noise exposures at multiple sides can play an equally important role in determining indoor noise pollution at various rooms [33] hence influencing noise perceptions at home. In particular, it is indeed important to examine the presence of a quiet façade, which has been proved to have positive effects on noise perception in a number of studies [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Effects of built environment morphology on wind turbine noise exposure at building façades

Qü

Kang

2017

Renewable Energy

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With wind farms installed in urban and suburban areas, the noise exposure of buildings is affected both by distance attenuation and the morphology of the built environment. With the aim of exploring the noise-resisting effects of built environment morphology, three kinds of typical suburban areas in the UK were sampled and noise maps were generated based upon an idealised modern wind turbine placed at various setback distances from each site. Relationships between morphological indices and building façade exposures were examined through regression analyses. Noise reduction levels of five morphological indices were given in terms of resisting wind turbine noise with different source-receiver (S-R) distances, and at different frequencies. The results show that built environment morphology has considerable effects on resisting the noise exposure of buildings and can create a quiet façade with up to 13dBA difference to the most exposure façade. Among the five indices, building orientation is found to be most effective in resisting the noise exposure of building façades, followed by the length and shape of the building. The noise resistance effects vary by different S-R distances and differ by frequency. Four morphological indices are found to be effective in resisting noise at low frequencies, typically at 50Hz.

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Section: Introductionmentioning

confidence: 99%

Effects of built environment morphology on wind turbine noise exposure at building façades

Qü

Kang

2017

Renewable Energy

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“…Other studies have also demonstrated the noise reduction potential of green walls [27,28,42] and green roofs [29]. Therefore, further research can be performed to identify the actual contribution of this system to noise reduction in adjacent rooms.…”

Section: Discussionmentioning

confidence: 98%

Acoustic Evaluation Of A New Modular System For Green Roofs And Green Walls

Manso

Castro-Gomes

Marchacz

et al. 2017

Architecture, Civil Engineering, Environment

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Environmental noise is a major problem that affects citizen's health and comfort mainly in densely populated urban areas. There are some ways to reduce environmental noise pollution through the use of materials with good acoustic insulation properties in buildings envelope. Recent studies have shown that green surfaces, e.g. in the form of green roofs and green walls, can contribute to decrease noise levels. The aim of this research is to identify how factors such as substrate and plants, variety and height of plants, affect the sound absorption of a modular system for green surfaces in simulated conditions. The results show that introduction substrate (S2) can improve the weighted sound absorption coefficient in 15% and the addition of plants (S3) improves it 20% more. However, if a variety of smaller and higher plants is used (S4) the weighted sound absorption coefficient (α α w) can reach to 0.80 and an absorption class B can be obtained. S t r e s z c z e n i e Hałas środowiskowy jest jednym z ważniejszych problemów wpływających na zdrowie i komfort życia mieszkańców miast, szczególnie na terenach gęsto zaludnionych. Jest kilka sposobów ograniczania zanieczyszczenia hałasem środowiskowym poprzez stosowanie materiałów elewacyjnych o dobrych parametrach akustycznych. Wiele opracowań pokazuje, iż powierzchnie zielone, np. w formie zielonych dachów czy zielonych ścian, mogą przyczyniać się do obniżenia poziomu hałasu. Przedmiotem opracowania jest wskazanie jak czynniki takie jak podłoże, roślinność oraz zróżnicowanie wysokości roślin wpływa na pochłanianie dźwięku przez modułowy system powierzchni zielonych w warunkach laboratoryjnych. Wyniki wskazują, iż wypełnienie podłożem (S2) może poprawić jednoliczbowy wskaźnik pochłaniania dźwięku (α α w) o 15%. Udział roślinności (S3) poprawia ten parametr o ponad 20%. W przypadku wariantu zawierającego mniejszą i większą roślinność (S4) jednoliczbowy wskaźnik pochłaniania dźwięku (α α w) może osiągać wartości do 0.80 oraz klasę pochłaniania B.

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“…The IEQ refers to the quality of the living environment that exists within a building [12]. The level of indoor environment quality relies on several variables, such as thermal, visual, acoustic, and chemical [13][14][15][16]. The variables, which should be assessed individually and/or collectively, include indoor air quality, thermal comfort, ventilation, acoustic performance, lighting, and spatial layout [3,17].…”

Section: Introductionmentioning

confidence: 99%

Designing Post COVID-19 Buildings: Approaches for Achieving Healthy Buildings

et al. 2022

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The COVID-19 pandemic forced the accessibility, social gathering, lifestyle, and working environment to be changed to reduce the infection. Coronavirus spreads between people in several different ways. Small liquid particles (aerosols, respiratory droplets) from an infected person are transmitted through air and surfaces that are in contact with humans. Reducing transmission through modified heating, ventilation, and air conditioning (HVAC) systems and building design are potential solutions. A comprehensive review of the engineering control preventive measures to mitigate COVID-19 spread, healthy building design, and material was carried out. The current state-of-the-art engineering control preventive measures presented include ultraviolet germicidal irradiation (UVGI), bipolar ionization, vertical gardening, and indoor plants. They have potential to improve the indoor air quality. In addition, this article presents building design with materials (e.g., copper alloys, anti-microbial paintings) and smart technologies (e.g., automation, voice control, and artificial intelligence-based facial recognition) to mitigate the infections of communicable diseases.

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Noise Reduction Interventions in the Urban Environment as a form of Control of Indoor Noise Levels

Cited by 13 publications

References 2 publications

Effects of built environment morphology on wind turbine noise exposure at building façades

Effects of built environment morphology on wind turbine noise exposure at building façades

Acoustic Evaluation Of A New Modular System For Green Roofs And Green Walls

Designing Post COVID-19 Buildings: Approaches for Achieving Healthy Buildings

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