天气预报 > 其他 > 为什么烟往上走不往下走
为什么烟往上走不往下走
更新时间: 2020-09-22 00:00:00  

1、平时见到的 “烟”,其实是热气夹带着极细小的颗粒的混合物;

2、烟气的温度高于环境温度,比重很小,密度也比空气小得多,所以会往上走;

3、在有烟囱的 “燃烧室”里,烟囱口的空气流动,压力变小,使烟气更容易往上走。

关键词: 为什么

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