The time of opening the window every day is also particular. It is best to open the window for air at 9 ~ 1 1 every day and at 2 ~ 4 pm for at least half an hour at a time. It is not recommended to open the window many times, because frequent opening of the window may lower the room temperature and make the elderly and children sick. It is suggested that the elderly and children can put on some clothes before opening the window to avoid getting sick due to the sudden drop of temperature after opening the window. The kitchen is definitely an important source of indoor air pollution. When cooking, turn on the exhaust fan or range hood to eliminate harmful gases in time.
Be sure to open the window three times a day, and the ventilation time should not be less than 15 minutes each time to basically keep the indoor air fresh. A person usually exhales 22 liters of carbon dioxide per hour. If the ventilation is not good, the carbon dioxide exhaled by these people will accumulate indoors. Window ventilation can make people get more "air vitamins", that is, negative ions, which can prolong people's life.
When the air quality improves, there is no need to turn on the air purifier for a long time. Natural ventilation should be the best choice. At present, ordinary air purifiers on the market can only remove dust, lampblack and peculiar smell, and a better air purifier can kill bacteria and viruses. However, using the air purifier for a long time in a confined space may cause secondary pollution. When the air quality improves, there is no need to turn on the air purifier for a long time. Natural ventilation should be the best choice.