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想让世界清新整洁?减少车内污染有妙招!

2017-08-16 07:23:20   新华网

坐在自家车内就觉得外面的污染与你无关了?想得美,其实车内污染也挺严重。不过,美国圣路易斯华盛顿大学的一项研究显示,打开车载空调能有效减少车内污染,最多能减少34%。

研究人员日常通勤时借助便携式设备和传感器检测车内和车外空气污染情况。车上还配备行车记录仪,帮助分辨污染加剧是因为堵在大型车之后、交通拥堵、遭遇红灯还是路过餐厅或者建筑工地。研究人员还变换汽车通风状况,比如开关车窗、打开换气扇、打开空调等。

一个月后,研究人员发现,打开车载空调能有效降低车内污染程度,依据车外污染情况,可降低20%至34%。研究人员认为,空调吸入外部空气时,空气经过滤器进入,这与换气扇相同,但不同的是,当空调打开时,空调蒸发器会冷却通过的空气,冷却面能吸附小颗粒污染物,令其沉淀,而不是飘浮在你呼吸的空气中。

研究人员还发现,综合考虑各项因素,关闭车窗也是一种对抗污染的有效办法,能减少车内污染8%至44%。

英国《每日邮报》援引研究牵头人安娜·利维的话报道,当经过污染区域时,关闭车窗、打开空调是最佳保护措施,而当驶出污染区域后,“我们建议打开车窗,去除车内逐渐增加的污染”。(黄敏)【新华社微特稿】

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