How to ventilate in foggy days?

Ventilation methods in foggy days are as follows:

1. Close doors and windows to reduce natural ventilation. Natural ventilation refers to indoor and outdoor air exchange through the gap between doors, windows or external walls. The gap opened by doors, windows or external walls will become the channel for outdoor particles to enter the room. Therefore, in such weather conditions, closing doors and windows is one of the effective ways to prevent serious outdoor pollution from affecting indoor air quality, and outdoor activities should be minimized.

2. Under the condition of smog weather, we can customize a ventilator, ventilation window or air intake system with particle filtering function to ventilate, so that the purified outdoor air can enter the room and improve the indoor air quality.

Matters needing attention in foggy days

In winter in the north, people often use heating to keep warm, so it is necessary to open the window for ventilation. Needless to say, it is sunny. If it is foggy, you should pay attention to choosing the time period when opening the window to avoid opening the window in the morning. It is best to wait until after ten o'clock to open the window for ventilation. The window opening time should be controlled between half an hour and one hour to avoid long window opening time and smog pollution.

It is recommended to use medical masks when going out in foggy days. General medical masks have three-layer design, which can effectively filter harmful substances and protect our health. After taking off the mask, pay attention to wait for the moisture in the mask to dry before folding it in half. At the same time, you should also pay attention to washing masks frequently to protect their hygiene.