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

There are various of design techniques to reduce cooling load in building. Among them, the technique to use natural forces to drive outdoor air though a window to a space can be considered as an alternative. It can be divided into the buoyance-driven natural ventilation by indoor and outdoor temperature difference and wind-driven natural ventilation by outdoor wind power. Also, in multi-story building such as the atrium buildings, the air flow rate and temperature distribution of each zone greatly influenced according to opening related architectural design variables. Therefore, this study is carried out on the effect of openable area of outside window, indoor opening and roof opening on natural air ventilation rates and indoor temperatures under the buoyance-driven and wind-driven natural ventilation by using Coolvent program.