CFD analysis of ventilation effectiveness in a public transport interchange
- 作者：Zhang Lin ; Feng Jiang ; T.T. Chow ; C.F. Tsang and W.Z. Lu
- 关键词：Displacement ventilation ; Public transport interchange ; Carbon monoxide (CO) ; Nitrogen dioxide (NO2) ; Computational fluid dynamics (CFD) ; Thermal comfort ; Indoor air quality (IAQ) ; Ventilation effectiveness
- 刊名：Building and Environment
- 出版年：2006
- 期刊代码：21_03601323
- 类别：et
- 出版时间：2006
- 卷：41
- 期：3
- 页码：254-261
- 文件大小：432 K
摘要
A study was conducted into the ventilation effectiveness of a ventilation system within a public transport interchange (PTI) in Hong Kong. A computational fluid dynamics (CFD), steady state computational model of the PTI was used to investigate and predict the typical pollutant emission pattern for buses. In Hong Kong, the displacement ventilation (DV) scheme is often employed for the PTI. The numerical simulation investigates the effectiveness of the DV system in removing pollutants from the occupied zone. An alternative model is proposed where the supply is located at the ceiling and the exhausts are located at the lower part of the columns. It was found that both systems could adequately ventilate the PTI; however, the ceiling based air supply system is able to provide improved thermal comfort and indoor air quality (IAQ).