摘要
小型汽车驾驶空间狭小,相对封闭,空气中PM2.5和甲醛超标给人体带来的危害更为严重.本研究通过对车内的PM2.5和甲醛进行浓度动态测试,探究污染物在车辆静止和行驶的过程及是否开启内循环的状态下的浓度变化规律及影响因素.结果表明:在车内未开启循环的情况下,汽车不同行驶状态会影响PM2.5及甲醛浓度,行驶时甲醛浓度约为静止的3倍,而PM 2.5浓度则相比静止时下降了55%;汽车在同一驾驶状态下,开启内循环会影响甲醛及PM2.5浓度变化,甲醛浓度约为无循环的2倍,而PM2.5下降了17%左右.本研究得出车内PM2.5和甲醛的变化规律,为改善空气环境提供理论依据.
The driving space of small cars is narrow and relatively closed.Excessive PM2.5 and formaldehyde in the air bring more serious harm to the human body.In this study,the concentration dynamics of PM2.5 and formaldehyde in the car were tested to explore the concentration changes and influencing factors of the pollutants in the process of stationary and driving of the vehicle and whether the internal circulation is turned on.The results show that when the car is not turned on,the different driving conditions of the car will affect the PM2.5 and formaldehyde concentration.The formaldehyde concentration during driving is about 3 times that of stationary,while the concentration of PM2.5 decreases by 55% compared with stationary.In the same driving state of a car,turning on the internal cycle will affect the changes in the concentration of formaldehyde and PM2.5.The concentration of formaldehyde is about twice as hihg as that without cycle,while PM2.5 is reduced by about 17%.This study draws the changes of PM2.5 and formaldehyde in the car,which provides a reference basis for improving the air environment.
作者
白莉
秦嘉
李春辉
贺梓健
陈琬玥
崔永博
迟有岩
BAI Li;QIN Jia;LI Chunhui;HE Zijian;CHEN Wanyue;CUI Yongbo;CHI Youyan(School of municipal&environmental engineering,Jilin Jianzhu university,Changchun 130118,China;School of environmental science&engineering,Tianjin university,Tianjin 300350,China)
出处
《吉林建筑大学学报》
2020年第6期28-32,共5页
Journal of Jilin Jianzhu University
基金
国家“十三五”重点研发计划(2017YFC0702705-01).
关键词
PM2.5
甲醛
运动状态
内循环
PM2.5
formaldehyde
motion state
internal circulation
