Plumbing noise control strategies in wood structures.

2011 ◽  
Vol 129 (4) ◽  
pp. 2604-2604
Author(s):  
John LoVerde ◽  
Wayland Dong
Keyword(s):  
Noise Control ◽  
Control Strategies ◽  
Wood Structures

Recent progress in acoustic materials and noise control strategies – A review

2021 ◽  
Vol 24 ◽  
pp. 101141
Author(s):  
Yinping Tao ◽  
Musu Ren ◽  
Han Zhang ◽  
Ton Peijs
Keyword(s):  
Recent Progress ◽  
Noise Control ◽  
Control Strategies

scholarly journals Passive Noise Control Strategies for Jets Exhausting over Flat Surfaces: an LES Study

2020 ◽  
Author(s):  
Colby Horner ◽  
Adrian Sescu ◽  
Mohammed Z. Afsar ◽  
Eric Collins ◽  
Mahdi Azarpeyvand
Keyword(s):  
Noise Control ◽  
Control Strategies ◽  
Flat Surfaces ◽  
Passive Noise

Noise reduction performance of a low energy façade-integrated mechanical ventilator

2020 ◽  
pp. 1351010X2096618
Author(s):  
Marco A Oliveira ◽  
Luis Bragança ◽  
Sandra M Silva ◽  
Dinara Paixão ◽  
Julieta António
Keyword(s):  
Energy Consumption ◽  
Noise Reduction ◽  
Energy Demand ◽  
Noise Control ◽  
Control Strategies ◽  
Minimum Energy ◽  
Sound Insulation ◽  
Mechanical Ventilator ◽  
Noise Emission ◽  
Acoustic Comfort

Acoustic comfort and indoor air quality are essential for the health and wellbeing of the occupants of the building. Thus, the façade must guarantee enough sound insulation and ventilation conditions. However, these aspects conflict because opening windows or using ventilation openings reduces the sound insulation of the envelope and allows the exterior noise entrance. To limit noise transmission into the building, ventilators use passive, active or hybrid noise control techniques. This work addresses the noise reduction performance of a mechanical ventilator for façades, evaluating the effect of different options of passive noise control strategies in the sound insulation of the proposed ventilator. In addition, the air change rate and energy consumption of the ventilator were also investigated. Three prototypes were fabricated and tested at an acoustic chamber, along with ventilation tests carried out in a room equipped with a blower door. CFD simulations were used to enhance the aeraulic geometry of the prototypes, prior to its fabrication. The acoustic experiments showed Dn,e,w values up to 55 dB and noise emission levels lower than 25 dB(A). The use of resistive sound absorbers proved to be more effective in mitigating noise than reactive absorbers, over the entire frequency range. The ventilation tests revealed air change rates of 3.7 h−1 at 50 Pa, while the ventilator’s annual energy consumption was 17.52 kWh. The results highlight the proposed device as a viable alternative for decentralised mechanical ventilation, capable of ensuring noise protection and satisfactory ventilation rates, under a sustainable perspective of minimum energy demand.

Analysis of Strategies To Control Traffic Noise at the Source: Implications for Policy Makers

1998 ◽  
Vol 1626 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Lloyd A. Herman
Keyword(s):  
Noise Control ◽  
Control Strategies ◽  
Traffic Noise ◽  
The United States ◽  
Market Forces ◽  
Policy Makers ◽  
Vehicle Noise ◽  
Cooling Fan ◽  
Control Traffic ◽  
Pavement Noise

Traffic noise control strategies that reduce traffic noise at the source were identified. The strategies were grouped according to the vehicle noise sub-sources: engine, intake air, exhaust, cooling fan, transmission/driveline, and tire/pavement. Examples of the strategies and recent advancements in vehicle noise control are given. The analysis yielded a number of implications for policy makers. In the United States, market forces are currently fostering technological advancements to reduce most of the vehicle noise subsources. However, the reduction of tire/pavement noise, the dominant subsource at freeway speeds, is currently benefiting little from market forces and may be hindered in the future by trends in passenger car tires. Policies and regulations, where warranted, should be aimed at reducing tire/pavement noise through a concerted effort on the part of both tire and pavement industries as well as transportation agencies.

Noise control strategies for naturally ventilated buildings

2002 ◽  
Vol 37 (5) ◽  
pp. 471-484 ◽  
Author(s):  
M.H.F. De Salis ◽  
D.J. Oldham ◽  
S. Sharples
Keyword(s):  
Noise Control ◽  
Control Strategies ◽  
Naturally Ventilated Buildings
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