Can the smog open the window?

We China people like to open the window for ventilation in our bones. Some people forget to open the window at night and may not sleep all night. From a scientific point of view, there are many indoor pollutants, such as furniture formaldehyde pollution, kitchen fume, bathroom bacteria, exhaust gas discharged by people's normal breathing ... Confined space can easily accumulate these pollutants and have a great impact on health. However, when smog becomes the norm, can you still open the window? Open or not?

There are many concerns

The smog contains a lot of fine particles (the aerodynamic diameter of particles is below 2.5 microns) and ultrafine particles (the aerodynamic diameter of particles is below 1 nanometers). These particles can enter, adhere and even deposit in the upper, lower respiratory tract and lungs of human body, causing rhinitis, bronchitis and other diseases, and may also induce lung cancer for a long time. Haze will weaken the ultraviolet rays in the surface layer, enhance the activity of infectious bacteria in the air and increase the probability of people suffering from infectious diseases.

in this weather, it is better to go out less naturally. However, "home" will face new problems when it is indoors. Furniture and decorations will release toxic and harmful gases, and smoking and cooking will also produce pollutants. When people are indoors for a long time, the contents of carbon dioxide, microorganisms and bacteria in the air will continue to accumulate.

four ways to open the window

1. Open the window for ventilation at selected time

On foggy days, indoor ventilation is very knowledgeable. You can't leave the window open, nor blindly open it, because it will be exposed to more polluted air.

Therefore, there are some tips for opening windows in foggy days. When the outdoor air pollution is not very serious, avoid the morning and evening traffic peaks and the dust caused by strong winds, because generally speaking, every day from 8: am to 1: am and from 6: pm to 8: pm, which is the peak of commuting every day, the automobile exhaust emissions are large, and the PM2.5 concentration in these two periods is relatively high. It is best to choose around 12-14 pm, because this time is the time when the concentration of PM2.5 is the lowest in a day. You can open the window twice a day for 2-4 minutes in still wind.

in case of continuous pollution, wet towels can be hung near the screen window during ventilation, which can play a role in filtration and adsorption. In addition, in the case of limited window opening time, using a humidifier, putting a towel on the heating, and wiping sheets and pillows with a wet towel are all desirable ways to absorb fine dust. Also pay attention to try not to smoke at home, use a range hood with strong suction when cooking, and keep it on for a while after cooking.

2. ventilation window with filtering function

If possible, you can also customize a ventilator with particle filtering function, ventilation window or air intake system for ventilation, so that purified outdoor air can enter the room and improve indoor air quality. However, in order to prevent the filter screen from becoming a pollution source, the filter screen and movement of the fresh air system or fresh air device should be replaced frequently. Generally speaking, the thinner the filter, the higher the replacement frequency and the greater the cost, and it can be replaced once every 2-3 months.

3. Put green plants on the windowsill

Some experts suggest that when outdoor air pollution is serious, you can plant more green plants with relatively strong adsorption capacity on balconies, terraces and indoors, and try to choose large-leaf plants, because large leaf area and many pores can not only adsorb a small amount of pollutants such as PM2.5 and formaldehyde, but also increase the oxygen content in the air. Such as green radish, evergreen, tiger orchid, ivy, etc.

4. Replace doors and windows with better airtightness

Under the influence of bad outdoor weather, tiny particles will enter the room through doors and windows with poor airtightness, which is a very important way to produce indoor PM2.5. Using doors and windows with better airtightness is conducive to reducing indoor pollution value. Therefore, when replacing doors and windows, you must choose a good sealing, sound insulation and dust isolation. The airtightness of sliding window is worse than that of casement window, so casement window should be selected as far as possible when replacing it.

conclusion: our habit of opening windows is deeply rooted. However, in the face of bad air environment, we should learn to be flexible for our own health. When the smog is in power, it is not only responsible for yourself, but also for the life of your family to know more about air common sense and learn more basic countermeasures.

If you have time, you can pay attention to "No Haze Theory" WeChat official account. Thank you!