不同使用场景下车内挥发性有机污染物的研究

Study on Volatile Organic Pollutants in Vehicles under Different Use Scenarios

选取了10台下线1个月左右的乘用车来模拟隔夜停车场景、阳光暴晒停车场景以及行驶过程场景,对这些场景下的车内空气污染物进行采样分析,并对比了不同用车场景下车内挥发性有机污染物的浓度差异。结果表明:车内空气污染物随着用车场景的变化而变化,其中阳光暴晒停车场景车内挥发性有机污染物显著增加。对阳光暴晒停车场景样车采用不同的新风策略进行采样分析,发现不同的新风策略对车内挥发性有机污染物削减效果差异明显,其中外循环降窗策略效果最好。

Ten passenger cars that have been off the road for about one month were selected to simulate overnight parking scene, sun exposure parking scene and driving process scene.The in-car air pollutants in these scenarios were sampled and analyzed, and the concentration differences of volatile organic pollutants in different vehicle scenarios were compared.The results show that the air pollutants in the car change with the change of driving scene, and the volatile organic pollutants in the car increase significantly in the sun exposure parking scene.Different fresh air strategies were used for sampling and analysis of the sample vehicles in the sun exposure parking scene.It is found that different fresh air strategies have significant differences in the reduction effect of volatile organic pollutants inside the vehicle, among which the external circulation window lowering strategy has the best effect.