Open windows for natural airflow and environmental noise reduction

Mediastika, Christina E.; Kristanto, Luciana; Anggono, Juliana; Suhedi, Fefen; Purwaningsih, Hariyati

doi:10.1080/00038628.2018.1502151

Cited by 8 publications

(6 citation statements)

References 23 publications

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“…The opening is further restricted to a maximum opening of 100 mm by Clause F4 2.1.1b of New Zealand’s Building Regulations to prevent accidental falls. Mediastika et al. (2018) identified that external noise provides further limitations to any positive cooling effect as the top hung design offered very little in the way of sound transmission reduction.…”

Section: Discussionmentioning

confidence: 99%

Thermal performance and indoor air quality in new, medium density houses – Auckland, New Zealand

Birchmore

Berry

Wallis

et al. 2022

IJBPA

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PurposeNew Zealand’s historical housing stock comprises largely single-storey detached houses, characterised by poor winter comfort with high air infiltration. Challenges with affordability and land use are shifting New Zealand’s housing stock towards double-storey, conjoined medium-density housing (MDH). Reduced external surfaces in this typology should reduce winter heat loss and infiltration, improving winter comfort and health. New concerns arise, however, regarding summertime overheating and poor indoor air quality.Design/methodology/approachA field study was undertaken where temperature, humidity, airtightness, particulate matter (PM) and total volatile organic compounds (TVOC) were measured in two unoccupied, newly built double-storey, conjoined houses, for several weeks over summer.FindingsThe reduced surface area of this typology did not reduce infiltration and demonstrated significant periods of overheating. Internal PM concentrations generally exceeded outdoor concentrations but did not exceed annual average outdoor PM10 guidelines of 20 µg m-3. Infiltration factors (Finf) were closer to more traditional houses. TVOC readings varied widely, but frequently exceeded international guidelines.Research limitations/implicationsThe small sample limits the applications of conclusions more widely. Recommendations to investigate a wider sample in different locations with more detailed VOC analysis over all seasons are made.Practical implicationsImprovements to internal environments cannot be guaranteed by housing typology changes alone and must still involve thoughtful environmental design.Social implicationsHousing typology changes may not improve internal living environments.Originality/valueA move to the new MDH typology may not achieve expectations of airtightness and thermal improvement. New challenges arise from significant overheating and high TVOC levels, which may lead to new negative health effects.

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Section: Discussionmentioning

confidence: 99%

Thermal performance and indoor air quality in new, medium density houses – Auckland, New Zealand

Birchmore

Berry

Wallis

et al. 2022

IJBPA

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“…It is possible to use architectural elements to mitigate indoor noise level. Some studies have suggested the use of façade elements (Mediastika et al, 2018;Tang, 2017) and indoor soundscape design (Torresin et al, 2019) for noise mitigations. However, for buildings in areas with consistently high air pollution, it is necessary to consider a mixed-mode implementation with a controlled mechanical ventilation strategy, which will inevitably result in higher energy cost.…”

Section: Discussionmentioning

confidence: 99%

Exploring membrane-assisted radiant cooling for designing comfortable naturally ventilated spaces in the tropics

Chen

Teitelbaum

Meggers

et al. 2020

Building Research & Information

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This research proposes the use of membrane-assisted radiant panels to improve the thermal comfort of naturally ventilated spaces in hot and humid climates. These radiant panels are capable of conditioning naturally ventilated spaces, which is impractical with conventional mechanical cooling systems. For conventional systems, a permeable envelope will result in energy wastage from conditioned air escaping or condensation occurring on the radiant surfaces. In our system, there is no airconditioning and we avoid condensation by separating the radiant surfaces from humid air using a membrane transparent to thermal radiation. The membrane-assisted radiant panels are an unutilized technology for architects to design comfortable naturally ventilated spaces. We propose a cooling system based on the technology and discuss the architectural implications, particularly the permeability of the building envelope and requirements for mechanical spaces, of employing this system in a case study that is a naturally ventilated classroom. Our system is compared to conventional cooling systems. Although our system requires a ceiling space reconfiguration, it does not require duct works and envelope retrofits. The comparative case study shows a potential 52% reduction in cooling energy demand from initial estimation. Considering the trade-offs, our system can be a good alternative for retrofit projects.

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“…Konfigurasi jendela yang terbuka masih dapat mereduksi bunyi bising meskipun tidak besar, namun dengan bukaan yang tidak terbuka sepenuhnya masih diharapkan mendapatkan reduksi bising yang cukup baik. Mediastika (Mediastika et al, 2018) melakukan percobaan laboratorium untuk mengetahui peluang jendela terbuka terhadap reduksi bising. Hasil penelitiannya menunjukkan bahwa jendela yang dibuka miring 10 derajat, masih mampu mereduksi 5 dB.…”

Section: Pendahuluanunclassified

“…Namun dengan sumber bunyi 70 dB, ternyata NR yang tercapai hanya sebesar 8.6 dB, yang merupakan selisih dari 70 dB dengan 61.4 dB. Sebagai perbandingan, penelitian sejenis dari Mediastika (2018), menghasilkan NR pada kisaran 5 ssampai dengan 10 dB. Adapun hasil kajian dari Du (Du et al, 2019) juga menunjukkan hasil NR dapat berkisar antara 8 sd 12 dB.…”

Section: Hasil Dan Pembahasanunclassified

Tingkat Kebisingan dan Perambatan Suara Akibat Bunyi Luar Pada Gereja Masehi Injili Minahasa (GMIM) Kampus Unsrat dan GMIM Bethesda Manado

Sangkertadi

Manganguwi

2021

JIS

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Penelitian ini bertujuan untuk mengetahui kontribusi dinding dan arsitektur ruang serta jarak gedung ke jalan terhadap reduksi bising dari luar kedalam bangunan, dan distribusi bunyi yang terjadi. Studi kasus pada 2 gereja yaitu gereja GMIM Kampus Unsrat dan gereja GMIM Bethesda Ranotana di Kota Manado. Sebuah sumber bunyi di letakkan di luar ruang dekat pagar pada jarak 12 m terhadap gedung, dengan kuat bunyi konstan namun bervariasi antara 60 sampai dengan 100 dB dengan tahapan setiap 10 dB. Kuat bunyi dihitung dan diukur pada setiap jarak 2 m diruang luar dan dalam Gereja. Pengukuran menggunakan alat sound level meter. Perhitungan menggunakan teori akustik ruang dan software I_Simpa. Hasilnya menunjukkan bahwa konfigurasi arsitektur selubung dan ruang bangunan kedua gereja tersebut dalam keadaan kosong hanya mampu mereduksi bising sebesar 2.2 dan 3.7 dB, dengan jendela terbuka. Dengan sumber suara 100 dB di ruang luar, hasil pengukuran di ruang dalam pada kedua gereja mencapai 69.3 dB(A) dan 56.4 dB(A). Rentang bunyi tersebut masih tergolong bising dan belum memenuhi syarat kenyamanan bunyi untuk jenis bangunan ibadah menurut SNI. Visualisasi distribusi bunyi dengan menggunakan software I_Simpa, menunjukkan peran bukaan pintu dan jendela yang menyebabkan kebocoran bunyi kedalam ruangan.Kata kunci: Akustika; bising; dinding; gereja Noise Level and Sound Propagation Due to Outside Sound at GMIM Church Unsrat Campus and GMIM Bethesda Manado ABSTRACTThis research aims to determine the contribution of walls and architectural interior, and the distance of the building to the road to the reduction of noise from outside into the building as well as the distribution of sound that occurs. Case studies on 2 churches: the GMIM Church of Unsrat Campus and the GMIM Bethesda Ranotana Church, both in Manado City. A sound source was placed outside the room near the fence at 12 m from the building. The sound source was constant but varied from 60 to 100 dB with steps every 10 dB. Sound reception was calculated and measured every 2 m distance at outside and inside. Measurements were carried out using sound level meter. Calculations by acoustic theory and I_Simpa software. The results show that the churches when room is empty, had only able to reduce the noise by 2.2 and 3.7 dB, with opened windows. When a 100 dB sound source was applied, the measurement results in the indoor of the two buildings reached 69.3 dB(A) and 56.4 dB(A). Graphical visualizations of sound distribution by using I_Simpa software, showed the role of door and opened window that cause sound leakage into the room.Keywords: Acoustic; church; noise; wall

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Open windows for natural airflow and environmental noise reduction

Cited by 8 publications

References 23 publications

Thermal performance and indoor air quality in new, medium density houses – Auckland, New Zealand

Thermal performance and indoor air quality in new, medium density houses – Auckland, New Zealand

Exploring membrane-assisted radiant cooling for designing comfortable naturally ventilated spaces in the tropics

Tingkat Kebisingan dan Perambatan Suara Akibat Bunyi Luar Pada Gereja Masehi Injili Minahasa (GMIM) Kampus Unsrat dan GMIM Bethesda Manado

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