【摘要】 研究了客车空气中的污染物及其变化规律。结果表明:客车内空气中的污染物主要成分为甲醛、甲苯和二甲苯,其质量浓度与车内内饰材料的使用情况有关;当车内温度升高10℃时,客车内污染物的质量浓度大约增加0.5~1.5倍;车内污染物的质量浓度随时间延长不断衰减,约10 d后趋于稳定;发动机运转时客车内污染物质量浓度升高,车内的空气质量变差;自然通风(开窗)与循环通风(开启空调)均可使车内污染物质量浓度迅速下降,但自然通风方式效果更好。更多还原

【Abstract】 According to the State Standard of Indoor Air Quality GB/T18883-2002,the air pollutants in the passenger car cabin were measured,and the influence of temperature,the type of car,the time since the manufacture date and the ventilation mode on the air quality was evaluated.The results indicate that prevalent air pollutants inside the passenger car are formaldehyde,methylbenzene and dimethylbenzene,and their concentration is related to the artifical ornaments in the passenger car.While the interior temperature increased by 10℃,the concentration of air pollutants multiplied by 1.5 to 2.5 times.With the time prolonging,the concentration was reduced and became steady after ten days.When the engine was running,the concentration of air polltants was increased,and the air quality got worse.The concentration of air pollutants inside the car was quickly reduced by means of natural ventilation through opening windows or by means of inside air cyclic ventilation through air conditioning,but the natural ventilation was more effective.更多还原