Can I open the window for ventilation in foggy days?

You can open the window for ventilation in foggy days.

In the indoor air, besides PM 10 and PM2.5, there are also large particles floating with the diameter of 100 micron, so it is necessary to open the window for ventilation in foggy days. When the haze weather is serious, reduce the window opening time. Open the window with small gap and use humidifying spray indoors. The humidifier puts a basin of water on or above the heater to increase the air humidity and let the dust and microorganisms sink.

doubt

Haze, as its name implies, is fog and haze. But there is a big difference between fog and haze. The aerosol system composed of dust, sulfuric acid, nitric acid and other particles in the air causes visual impairment, which is called smog. Haze is haze. Fog is an aerosol system consisting of a large number of tiny water droplets or ice crystals suspended in the air near the ground.

It mostly occurs in autumn and winter (which is also one of the reasons for the large-scale haze weather in China in June 20 13), and it is the product of water vapor condensation (or condensation) in the near-surface air. The existence of fog will reduce air transparency and worsen visibility. If the horizontal visibility of the target drops below 1000 meters, the weather phenomenon of water vapor condensation (or condensation) suspended in the air near the ground is called fog.

Haze is composed of particles such as dust, sulfuric acid, nitric acid and organic hydrocarbons in the air. It will also make the atmosphere turbid, blur the vision and worsen the visibility. If the horizontal visibility is less than 10000 meters, the visual distance obstacle caused by this non-aqueous aerosol system is called haze or haze.