Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

Due to urbanization, traffic noise complaints are increasing in areas near roads, and urgent alternatives are required to provide a comfortable living environment for the people. In this study, a device that can be attached to the windows of apartment houses were studied to directly block the traffic noise at a building facade, by securing sound insulation in a naturally ventilated condition. A ventilation system was constructed by applying a silencer-type plenum structure, and a total of three design variables were selected: Ventilator height (H), Ventilator depth (D), and Opening height (h). The influence of sound insulation and ventilation performances according to individual design variables was analyzed using computational analysis after validating the prediction accuracy by the comparison with experimental data. As a result of the analysis assuming the application of 4 plenums in 84 m² housing, to satisfy the minimum ventilation performance, an opening height of 30 mm and a device depth of 10 mm and the device height was insignificant. Finally, the noise-reducing natural ventilation system developed in this study was analyzed to be able to secure 25 dB of sound insulation performance by satisfying the acceptable ventilation performance when opened. It is expected that it can be used for noise reduction and natural ventilation in residential areas near roadsides.