PASSIVE VENTILATION SYSTEM ADOPTED FOR WALK-UP TYPE APARTMENT HOUSE : Airflow volume, supply air temperature and ventilation load of passive ventilation using staircase in winter(Environmental Engineering)

Abstract

The subject of this study is passive ventilation system, for apartment house, supplying fresh air to rooms via the outside-insulated staircase equipped with a heater and a space over the ceiling. The result of the measurements of the properties of airflow and thermal environment shows that fresh air heated enough to be comfortable was supplied stably to residential room in winter. By numerical simulation, heating energy of this system is estimated 10% of supplying fresh air directly.