Effect of vertical air circulation on the thermal environment in a large space.

Large premises, such as airport tenninals or international conference centers, have high ceilings and large floor area. Most of passengers who use these facilities do not stay for a long time as they do in office blocks or residential housings, but occupy the buildings en masse for short periods of times. The indoor thermal environment in these architects is subject to rapid deterioration by the radiant heat or outer thermal conditions. Furthermore, for aesthetic reasons, glass panels are applied extensively as building materials for the construction of transparent walls and roofs in these large structures. The purpose of the present study is to investigate the effect of vertical air circulation on thermal environment in an airport passenger terminal. Two ventilation models, each with or without vertical air circulation, are analyzed by way of numerical results for airflow, temperature and PPD(l) distribution.