Study on mitigation of automobile exhaust pollution in an urban street canyon: Emission reduction and air cleaning street lamps

doi:10.1016/j.buildenv.2021.107651

IEECAS OpenIR > 粉尘与环境研究室

	Study on mitigation of automobile exhaust pollution in an urban street canyon: Emission reduction and air cleaning street lamps
	Huang, Ming-Hua 1; Huang, Yu 2; Cao, Jun-Ji 2; Tao, Wen-Quan 1
通讯作者	Tao, Wen-Quan(wqtao@mail.xjtu.edu.cn)
	2021-04-15
发表期刊	BUILDING AND ENVIRONMENT
ISSN	0360-1323
卷号	193 页码:16
摘要	Affected by the rapid growth of the number of fuel motor vehicles, the automobile exhaust pollution in the street canyon is becoming more and more serious. Different from the pollution source control technology usually used for outdoor air pollution control, an air cleaning street lamp is designed in this work. A 3D steady numerical model with line source pollution is established to simulate the air flow and pollutant diffusion in street canyons and validated. Then, the distributions of pollutants in 90 scenarios of street canyons are numerically simulated. The results show that wind direction and wind speed have great influence on pollutants diffusion in street canyons. Air quality in street breathing zones is improved with the reduction of emission; however, the air quality inside the street canyon is still worse than that outside the street canyon. Scenario with air cleaning street lamps with four 45 degrees downward air outlets is shown to work better in improving air quality. In most of the studied cases, air cleaning street lamps are found to be more effective than reducing emissions from automobiles. A better method to improve the air quality in street canyons is to combine emission reduction measures and air cleaning street lamps. For the high-pollution breathing zone under perpendicular, oblique and parallel approaching wind directions, by this better method the mean PM concentration decreases by 14.38%, 7.68% and 17.78%, respectively; the mean NOx concentration decreases by 24.92%, 21.33% and 29.03%, respectively; the mean CO concentration decreases by 12.77%, 7.45% and 15.05%, respectively.
关键词	Street canyon Emission reduction Air cleaning street lamp CFD
DOI	10.1016/j.buildenv.2021.107651
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[51836005] ; Foundation for Innovative Research Groups of the National Natural Science Foundation of China[51721004] ; 111 Project[B16038]
WOS研究方向	Construction & Building Technology ; Engineering
项目资助者	National Natural Science Foundation of China ; Foundation for Innovative Research Groups of the National Natural Science Foundation of China ; 111 Project
WOS类目	Construction & Building Technology ; Engineering, Environmental ; Engineering, Civil
WOS记录号	WOS:000625642200001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16153
专题	粉尘与环境研究室
通讯作者	Tao, Wen-Quan
作者单位	1.Xi An Jiao Tong Univ, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Huang, Ming-Hua,Huang, Yu,Cao, Jun-Ji,et al. Study on mitigation of automobile exhaust pollution in an urban street canyon: Emission reduction and air cleaning street lamps[J]. BUILDING AND ENVIRONMENT,2021,193:16.
APA	Huang, Ming-Hua,Huang, Yu,Cao, Jun-Ji,&Tao, Wen-Quan.(2021).Study on mitigation of automobile exhaust pollution in an urban street canyon: Emission reduction and air cleaning street lamps.BUILDING AND ENVIRONMENT,193,16.
MLA	Huang, Ming-Hua,et al."Study on mitigation of automobile exhaust pollution in an urban street canyon: Emission reduction and air cleaning street lamps".BUILDING AND ENVIRONMENT 193(2021):16.