Study on indoor thermal environment and air quality of office rooms controlled by personal displacement ventilation using CFD

In this study, personal displacement ventilation (PDV), including two cases with all seats taken and two middle seats taken, is compared with overall displacement ventilation (ODV) of all seats taken under the condition that supply temperature is 24C and air change rate is 60 l/s per workstation. The results indicate that PDV can be used in the room with big change of occupants number to satisfy the need of thermal comfort and air quality. When not all seats are taken, designers should increase supply air requirement or reduce its temperature for thermal comfort.