How long does it generally take to open a window for ventilation, how long does it take to open a wi

In winter, the window opening and ventilation time in the living room shall not be less than half an hour every day, and the room can be ventilated in half an hour.

Generally, it takes about 30 minutes.

Open windows and ventilation is conducive to keeping indoor air fresh, reducing pathogenic bacteria in the air, etc., generally in the case of a 20 difference in indoor and outdoor temperature, an 80 cubic meter room needs 9 minutes to completely ventilate when let Huiqing room.

If the temperature difference between indoor and outdoor is 15, it takes 11 minutes to open the window; If the temperature difference cannot be accurately grasped, it is enough to open the window for 30 minutes, and it is best to open the window 3-4 times a day.

When is the best time to open a window:

Open the windows in the morning. Because in the early morning, with the rising sun, the garden plants in the green space begin to photosynthesize, absorb carbon dioxide and release oxygen, so the carbon dioxide content in the air gradually decreases, and the natural air is relatively fresh, and the closed room at night is full of carbon dioxide discharged by the human body, which is relatively turbid.

Choosing to open the window in the morning can not only expel the dirty air in the room, make the air in the room fresh and smooth, but also visually usher in the freshness of the morning, which helps to start the day in a good mood.

The two pollution peaks of the city correspond to the morning and evening rush hour, so the relative air cleaning time is about 10 a.m. to 3 p.m., if conditions permit, it is best to choose to open the windows in these two time periods, but if the outside air quality is poor such as wind, snow, haze weather, etc., it is not recommended to open the windows for ventilation.

There are many experts and scholars who suggest that you must open more windows for ventilation, but many people can't grasp the time when they open windows for ventilation, so how long does it take to open windows for ventilation to completely ventilate?

How long to open the window for ventilation and completely ventilate.

Varies from 9-30 minutes.

Taking an 80 cubic meter room as an example, in the case of a 20 degree difference between indoor and outdoor temperature, it takes about 9 minutes to completely ventilate; If there is a difference of about 15 degrees Celsius, then it takes about 11 minutes to open the window for ventilation;

If you can't determine the temperature difference between indoor and outdoor or the size of the room, it is enough to open the window for 30 minutes.

Is it good to open windows for ventilation 24 hours a day?

Not good. Although opening windows for ventilation is good for keeping indoor air fresh, ventilation 24 hours a day is not good for three main reasons:

1. When the weather is cold, if the windows are opened for ventilation 24 hours a day, the cold air outside will enter, which will easily make people catch a cold.

2. In the case of haze, rain, wind and other bad weather, 24-hour ventilation a day will cause external pollutants to enter the room and affect human health.

3. During the rush hour, there is a lot of car exhaust and dust, and opening the window for ventilation at this time will make the bad air enter the room, which is not good for human health.

Does ventilation have to be convection?

It is recommended that convection is better.

Ventilation can be done by opening doors or windows, but it is generally recommended to maintain room convection is better, because under convection conditions, air circulation can be better promoted, and bacteria and viruses can be expelled outdoors, and the air replacement speed will be faster.

However, if it is cold in winter or if you sleep at night, you can only open one window, or open a crack to avoid cold air from invading the human body and causing a cold.

Does opening windows for ventilation introduce viruses into the house?

No. Most of the pathogenic bacteria are spread through the respiratory tract or by contact, and the distance of droplet transmission is generally only about 1-2 meters, and the germs can not survive in the air for a long time, especially in the sun, it is easy to be killed by ultraviolet rays, so the virus will not be introduced into the house when the window is opened for ventilation.

What happens if you don't open the window for a long time?

The breathing rate of normal people per minute is 12-20 times, and the content of carbon dioxide in the exhaled breath accounts for 4%, and the air already contains a certain amount of carbon dioxide. In such an environment for a long time, the immunity will also be reduced, and it is easy to get sick.

How long does it take to ventilate the air conditioner during confinement.

After turning on the air conditioner during the puerperium, it should be noted that the air conditioning air cannot blow directly to the mother, which is easy to catch a cold. If the mother has just returned from outside, she should not turn on the air conditioner immediately. It's hot outside, and the pores are in the open phase.

If you go into a very cold environment, pores can easily shrink. It's so easy to catch a cold! During the lockdown, we should also pay attention to the ventilation of the room and should not leave the air conditioner on all day.

Avoid heat stroke during the puerperium caused by excessive indoor temperature, humidity and fever. The mother's bed should not be facing the air conditioner, and the bedroom should be a well-ventilated, south-facing house. If you want to blow the air conditioner during confinement, wear long-sleeved clothes and long pants, and preferably a pair of socks.

So that the cold doesn't go through your feet! If the indoor temperature is too high, pregnant women can use the air conditioner, but it is best to adjust the air conditioning temperature to 26 -28. During the cooling process, it is better for the mother and child not to stay in the air-conditioned room until the temperature reaches 26 degrees Celsius, and then enter the air-conditioned room.

In the future, you can also consider installing a new wall-mounted fan, cats are available, the installation is relatively simple, and the ventilation effect is good. If you have children at home, you should also pay more attention to ventilation.

How long does it take to ventilate an air conditioner?

After turning on the air conditioner during the puerperium, it should be noted that the air conditioning air cannot blow directly to the mother, which is easy to catch a cold. If the mother has just returned from outside, she should not turn on the air conditioner immediately. It's hot outside, and the pores are in the open phase.

If you go into a very cold environment, pores can easily shrink. It's so easy to catch a cold! During the lockdown, we should also pay attention to the ventilation of the room and should not leave the air conditioner on all day.

Avoid heat stroke during the puerperium caused by excessive indoor temperature, humidity and fever. The mother's bed should not be facing the air conditioner, and the bedroom should be a well-ventilated, south-facing house. If you want to blow the air conditioner during confinement, wear long-sleeved clothes and long pants, and preferably a pair of socks.

So that the cold doesn't go through your feet! If the indoor temperature is too high, pregnant women can use the air conditioner, but it is best to adjust the air conditioning temperature to 26 -28. During the cooling process, it is better for the mother and child not to stay in the air-conditioned room until the temperature reaches 26 degrees Celsius, and then enter the air-conditioned room.

In the future, you can also consider installing a new wall-mounted fan, cats are available, the installation is relatively simple, and the ventilation effect is good. If you have children at home, you should also pay more attention to ventilation.

What is the best temperature for the air conditioner to adjust in summer? How many hours after turning on the air conditioner should I turn it off to ventilate the room?

I can sleep at 28 degrees at night and 26 degrees during the day, the ventilation process is irregular, and I open the door for ventilation at night, although it is a bit wasteful.

Staying in a confined space for a long time is not good for you. But you can also breathe without opening the windows often, so that the room also has fresh air! It depends on the Hitachi Fresh Air Fresh Air System!

Its fresh air function can deliver fresh air from the outside to the room after defogging and filtering, so that you can get very fresh and comfortable air without opening the window!