Acoustic insulation performance of improved airtight windows

Park, Hyeon ku; Kim, Hang

doi:10.1016/j.conbuildmat.2015.05.058

Cited by 21 publications

(11 citation statements)

References 9 publications

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“…Instead, the lowest LFN exposure of 30.7 dB (L Aeq ) in both seasons was recorded inside House 5, the only residence with airtight windows installed. Windows serve as sound attenuation [57]. Although the resident of House 5 indicated a habit of keeping windows fully open in the summer (Table 3), the windows were actually closed during the monitoring period according to our observation.…”

Section: Lfn Exposure In Residential Householdsmentioning

confidence: 64%

Effects of low-frequency noise from wind turbines on heart rate variability in healthy individuals

Chiu

Lung

Chen

et al. 2021

Preprint

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Background: Wind power has been applied around the world as a source of clean energy. However, wind turbines generate low-frequency noise (LFN, 20-200 Hz), which poses health risks to nearby residents. This study aimed to assess heart rate variability (HRV) response to LFN exposure and to evaluate the LFN exposure (dB, LAeq) inside households located near wind turbines. Methods: Thirty subjects living within a 500 m radius of wind turbines were recruited. The field campaigns for LFN (LAeq) and HRV monitoring were carried out in July and December 2018. A generalized additive mixed model was employed to evaluate the relationship between HRV changes and LFN. Results: The results suggested that the standard deviations of all normal to normal R-R intervals reduced significantly by 3.39% with a 95% CI = (0.15%, 6.52%) per 7.86 dB (LAeq) of LFN in the exposure range of 38.2-57.1 dB (LAeq)—i.e., a 0.43% reduction per 1 dB (LAeq). The results of household monitoring showed that the indoor LFN exposure (LAeq) ranged between 30.7 and 43.4 dB (LAeq) at a distance of 124-330 m from wind turbines. The worst case had 99.6%, 89.1%, and 96.8% at daytime, evening, and nighttime, respectively, exceeding the LFN standards of the Taiwan Environmental Protection Administration. Moreover, households built with concrete and equipped with airtight windows showed the highest LFN difference of 13.7 dB between indoors and outdoors. Conclusion: This work is the first study assessing the HRV impacts from turbine LFN in Asia, where wind turbines installed within short distances from residential areas. In view of the adverse health impacts of LFN exposure, there should be regulations on the requisite distances of wind turbines from residential communities for health protection.

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Section: Lfn Exposure In Residential Householdsmentioning

confidence: 64%

Effects of low-frequency noise from wind turbines on heart rate variability in healthy individuals

Chiu

Lung

Chen

et al. 2021

Preprint

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“…Fundamentally, improving window tightness requires designing the window frame to have an impermeable structure. The windows and bays are the most critical facade elements from an acoustic point of view (Park and Kim, 2015).…”

Section: The Building Acoustic Performancementioning

confidence: 99%

Management of acoustic risks for buildings near airports

Camara

Kamsu-Foguem

Diourte

et al. 2018

Ecological Informatics

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Global population growth leads to a rapid urbanization of big cities and the development of transport infrastructure (airports, railway and bus stations). The strong urbanization in the cities of developing countries leads to a gradual rapprochement of dwellings and companies of airport zones. A fact that is real in Mali, where Bamako airport area has become an inhabited urban zone for some years by a part of the population. Given the importance of Bamako's airport traffic (West African crossroads), the proximity of the dwelling houses must receive the authorities and scientist's attention on the occupants' safety and quality life. The noise levels generated all around the airport zone throughout landings and takeoffs by different aircraft types require an assessment of the acoustic noise level, the level of noise exposure and the building acoustic performance near the airport for users comfort and quality of life. In this article, we give in one hand the general notions on the inhabitants discomfort indicators, the building acoustics and, on the other hand, non-quality identification, and the discomfort factors whose resolution contributes to improving the building acoustic and environmental performance. These assessment studies are based on acoustic measurements and in-situ surveys from construction actors and users. Data from these surveys are processed with an evaluation methodology developed to improve knowledge and strategies aimed at preventing or minimizing the acoustic risks near airports. The capitalization of knowledge resulting from this study can serve as experience feedback through good practices advocacy and corrective and preventive solutions for building construction and renovation projects.

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“…Windows are of high importance and building indoor environment and living quality of occupants mostly depend on their properties (Allard, Olofsso, & Hassan, 2013;Ionescu, Baracu, Vlad, Necula, & Badea, 2015;Kull, Mauring, & Tkaczyk, 2015;European Union, 2010;Rodríguez-Soria, Domínguez-Hernández, Pérez-Bella, & Coz Diaz, 2014;Rasmussen & Gerretsen, 2014;European Union, 2002;Sadineni, Madala, & Boehm, 2011;Garg, Kumar, & Maji, 2013;Kurra & Dal, 2012;Mateus, Pereira, & Tadeu, 2013;Konroyd-Bolden & Liao, 2015;Baldinelli et al, 2014;Cuce & Riffat, 2015;Buratti, Barelli, & Moretti, 2013;Granzotto et al, 2017). The sound and thermal insulation of windows are influenced by various factors and one of them is air tightness (Iordache & Catalina, 2012;Varshney, Rosa, Shapiro, & Scott, 2013;Park & Kim, 2015;Blasco, Belis, & Den Bleecker, 2011). Therefore, it is important to know the relationship between air tightness and sound and thermal insulation.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is important to know the relationship between air tightness and sound and thermal insulation. The Iordache and Catalina research showed that the air change rate is inverse correlated to the sound transmission loss; the higher the sound transmission loss, the smaller gap formed between the outside frame and the window frame (Granzotto et al, 2017;Park & Kim 2015;Blasco et al, 2011;Iordache & Catalina, 2012;Van Den Bossche, Huyghe, Moens, Janssens, & Depaepe, 2012). Most common defects that gave rise to excessive air leakage were weather strip discontinuity, poor sash fit and malfunctioning hardware (Iordache & Catalina, 2012;Van Den Bergh, Hart, Jelle, & Gustavsen, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Most common defects that gave rise to excessive air leakage were weather strip discontinuity, poor sash fit and malfunctioning hardware (Iordache & Catalina, 2012;Van Den Bergh, Hart, Jelle, & Gustavsen, 2013). Also researchers noticed that when windows have low airtightness, there is strong relationship between airtightness and sound and thermal insulation (Park & Kim, 2015). The creation of a discontinuity in the gasket resulted in a reduction of the acoustic insulation in the mid and higher frequencies as the usage of no gasket at all clearly impacts reduces the sound insulation in all frequency range (Blasco et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Acoustic and Thermal Properties of Airtight Wooden Windows Used in Baltic and Scandinavian Countries

Miškinis

Bliūdžius

Dikavičius

et al. 2019

Journal of Environmental Engineering and Landscape Management

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Windows are the one of the most important elements of a building envelope. Windows with appropriate acoustic and thermal properties can guarantee comfort and protection of indoor environment. The sound and thermal insulation of windows are influenced by various factors and one of them is air tightness. The aim of this study was to assess if airtight typical wooden windows used in Baltic and Scandinavian countries always have both good acoustic and thermal properties. For this purpose, sound reduction index (characterizes acoustic properties), thermal transmittance (characterizes thermal insulation properties) and air permeability (characterizes air tightness) of windows were determined in the laboratory. The results showed that airtight windows have various acoustic and thermal properties. This means that there is a negligible relationship between air permeability and acoustic properties, also between air permeability and thermal properties of windows.

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Acoustic insulation performance of improved airtight windows

Cited by 21 publications

References 9 publications

Effects of low-frequency noise from wind turbines on heart rate variability in healthy individuals

Effects of low-frequency noise from wind turbines on heart rate variability in healthy individuals

Management of acoustic risks for buildings near airports

Assessment of Acoustic and Thermal Properties of Airtight Wooden Windows Used in Baltic and Scandinavian Countries

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