Noise pollution has been one of the central problems in urban areas, especially in high-density cities. To restrict the outdoor noise, individuals usually opt for an enclosed air-conditioned space. However, that leads to increase energy consumption and almost no natural ventilation. Moreover, due to the global spread of COVID-19, redesigning built environments and spaces that would ensure physical well-being, emotional wellness, and sustainability has become one of the major concerns.
Addressing these problems, researchers have brought a new invention, Acoustic Friendly Ventilation Window (AFVW), that would reduce outdoor noise and improve indoor ventilation. It is considered as a significant advancement in the Residential Ventilation Systems Market as with this new technology, homeowners would able to live with much more comfort and have access to better ventilation in contrast with traditional windows.
The team has stated that the novel system reduces environmental noise levels by 26 decibels, which is equal to about a fourfold reduction in terms of a human’s intake of loudness. The system also can acquire four times better ventilation in comparison to a conventional open window.
AFVW has two layers of glass panes, consisting of the mechanical ventilation system and two staggered vents. The glass panes are made to be 0.6 cm thick and are set 8.5 cm apart from each other. Good quality sound insulation performance is achieved by installing sound absorbers on the sides of the glass panes.
Researchers conducted sound tests of the system based on international standards. They concluded that a combination of sound absorbers and double glass panes could reduce traffic noise by about 26 decibels.
Another positive aspect of AFVW is that it can keep the noise out and provide natural ventilation with the help of two open vents. In this, airflow goes through a staggering vent present at the bottom of the window and then exit via other similar vents on the top. In the middle of the glass panes, a mechanical ventilation system is placed to enhance indoor air change.
The team used a tracer gas simulator known as a “pollutant” and injected it in a room that had AFVW installed in it with a conventional open window. The team discovered that the concentration of tracer gas (removal of the pollutant) decreased four times for the AFVW compared to traditional open windows.
This means that the system might improve comfort while consuming minimal energy compared to natural ventilation. It might also be able to filter dust particles if such a filter is also added to the system.
When the system is looked at as a whole, it can provide a more comfortable indoor environment and safeguard people from the spread of infectious diseases.
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