Numerical investigation of various passive control techniques in indoor air pollution

Abstract

A study was conducted based on effectiveness of passive control techniques (changing windows’ position and applying green belt) in Guard Room (Gate No. 3) of Jadavpur University, Kolkata, India. A computational fluid dynamics (CFD), steady state computational model was used to investigate and predict the typical pollutant concentration level inside the room. PM10 was considered as air pollutant and tried to mitigate PM10 concentration level inside the room with the help of two passive control techniques. Two different wind speeds and critical wind angles were considered. It was found that if wind speed is increased, the pollution concentration inside the room also increased. Apart from that when wind angle was considered as 0º (in this case wind can directly enter into the room), pollution concentration inside the room was much more than other wind angle cases. It was also observed that applying green belt is the very useful passive control technique to reduce the pollutant concentration inside the room.