Air Quality in a Semi-Enclosed Public Transport Interchange Station in Rush Hour

Abstract:

Indoor air quality in a public transport interchange station in rush hour has been studied. Carbon monoxide is selected as the main pollutant for description of air quality. Ventilation systems, bus traffic and passenger flow, air quality have been investigated by on-site survey. Large eddy simulation technology has been used to analyze indoor air quality of public transport interchange station. The boundary conditions are determined according to the measured date. Indoor air quality results at heights of 0.8m and 1.6m in rush hour and two operating conditions of public transport interchange station are calculated. Results have shown carbon monoxide concentrations at height of 0.8m are higher than those at height of 1.6m. Air quality would reach the harmful degree within 5min to 10min if the ventilation system is not operating. The ventilation system should be operated continuously during the peak hour in order to meet the requirement of indoor air quality standards.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 2077-2081
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.2077
• Online since: September 2014
• Authors: Yan Feng Li*, Meng Zhao, Xin Xin Lin
• Keywords: Air Quality, Large Eddy Simulation (LES), Public Transport Interchange Station, Ventilation

References

[1] Qian Liu. Vehicle exhaust distribution in street canyons and its effect on built environment [D]. Harbin Institute of Technology, 2009. ( In Chinese).

[2] Zhenyi Huang, Jincheng Pan, Chunying Huang, et al. Investigation on health effect of indoor air pollution in the toll-gates [J]. Occupational Health and Emergency Rescue, 2006, 4(1): 43-44. ( In Chinese).

[3] Dengfeng Gu. Numerical simulation and frequency control of the underground garage ventilation system [D]. Hunan University, 2007. ( In Chinese).

[4] Lianfang Long, Xinming Wang, Baozhi Feng, Yanli Zhang, Haifeng Yang. Exposure Levels of PM2. 5 and CO at Bus Stationsin Urban Guangzhou [J]. EnvironmentalScience&Technology, 2010, 33(9): 140-145. ( In Chinese).

[5] Jiaping Xue, Weili Tian, Qingyu Zhang. Development of NOx Emission Inventory from Motor Vehicles in Hangzhou and Study on Its Influence on AirQuality[J]. Research of Environmental Sciences, 2010, 23(5), 613-618. ( In Chinese).

[6] T.T. Chow, Zhang Lin, Wei Bai. Assessment of alternative ventilation schemes at public transport interchange[J]. Transportation Research Part D: Transport and Environment, 2006, 11(6): 447-458.

DOI: 10.1016/j.trd.2006.09.002

[7] Zhang Lina, Feng Jiang, T.T. Chow, C.F. Tsanga, W.Z. Lu. CFD analysis of ventilation effectiveness in a public transport interchange[J]. Building and Environment , 2006, 41(3): 254-261.

DOI: 10.1016/j.buildenv.2005.02.011

[8] McGrattan K. Fire Dynamics Simulator Technical Reference Guide[M]. Version 5. 0. NIST Special Publication 1018. Gaithersburg, Maryland: National Institute of Stan-dards and Technology, (2005).

[9] Xinxin Lin. Study on the operrating environment control and evacuation in the city public transport interchange [D]. Beijing University of Technology. 2013. ( In Chinese).

[10] Igor Y. Maevski. Design Fires in Road Tunnels[M], Transportation Research Board, (2011).

[11] Xiaofeng Su. Numerical Simulation of the Dispersion of Pollutants and Optimization of Ventilation System of the Underground Garage [D]. Chongqing University, 2012. ( In Chinese).