Can I open the window for ventilation at five in the morning?

Can I open the window for ventilation at five in the morning?

Can I open the window for ventilation at five in the morning? Everyone should pay attention to the time of window ventilation every day, because window ventilation can keep the indoor air fresh and avoid the risk of respiratory diseases. Can I open the window for ventilation at five in the morning?

Can you open the window for ventilation at five o'clock in the morning 1 1? There are no ventilated windows.

Because before 6 o'clock in the morning, the concentration of pollutants is still very high, and the temperature is low and the air pressure is high in the morning. The tiny dust and harmful gas in the air are pressed to the place close to the ground by atmospheric pressure, so it is difficult to spread into the sky. It is suggested that after the sun rises and the temperature rises, the window should be opened for ventilation, which is conducive to the dispersion of harmful gases in the air as soon as possible.

suggestion

It's cold in the morning. Before opening the window, make sure everyone in the room has extra clothes to keep warm. For example, families with many rooms can adopt the room rotation ventilation method in winter, or adopt the indirect ventilation method, that is, opening the window that does not directly face the living room can also achieve the purpose of ventilation.

2. When is the best time to open the window in a day?

The best window opening time is 9: 00 am-11:00 or 2:00-4:00 pm.

Because of the temperature rise in these two periods, the harmful gases deposited in the bottom of the atmosphere have dispersed, and the ventilation effect of window opening is better. Of course, the wind speed should not be too fast and exceed 0. 15 m/s when opening the window for ventilation. From the sense, under such wind speed, the human body will not obviously feel the air flow. Moreover, these two periods are not peak hours, and the air quality outside is relatively high, which is suitable for ventilation.

1, after getting up early

When sleeping, the indoor space is often relatively closed. I have been out of breath all night, and the air in the bedroom is often a little bad. Not only has a lot of carbon dioxide accumulated, but oxygen has also become very thin. When arranging bedding, tiny pollutants such as dust mites and dander will float in the air. At this time, it is particularly important to open the window for ventilation.

However, the time to open the window should not be too early, especially in cities, where the concentration of pollutants in the air is still high at six or seven in the morning. It is best to wait until the dirty air deposited on the ground is lifted off before opening the window for air exchange. You can open the window around 8 am, when the temperature rises and the air quality gets slightly better. It should be reminded that patients with cardiovascular diseases are easily affected by cold air and other stimuli. So be sure to wear more clothes after getting up and open the window after getting used to the temperature.

2, quilt cover

Mite likes warm and humid environment, and quilt is its favorite home. The quilt will be stained with human sweat and some will be slightly wet. The temperature and humidity at this time are most suitable for mites to survive. In the south, it is common that the air humidity is high and the quilt is wet. Ventilation by opening the window is a good way to ensure that the quilt is dry. Don't rush to fold the quilt after getting up. It is best to flatten the quilt in turn, and then open the window to let the quilt breathe, which can promote the evaporation of water vapor in the quilt and avoid the breeding of mites and molds.

3. When cooking

Chinese cooking methods, such as frying and frying, will produce a lot of oil smoke, and the ingredients will emit a lot of harmful substances at high temperature, which has a strong stimulating effect on nasal, eye and throat mucosa, and can cause respiratory diseases such as rhinitis, pharyngolaryngitis and tracheitis, and harmful gases such as carbon monoxide may be released when gas and natural gas are burned.

Therefore, when cooking, you should not only open the range hood, but also open the window for ventilation. It is best to let the air produce convection. After cooking, keep the window open and ventilate for at least 10 minutes to avoid oil fume deposition at home. The range hood should be turned on early and turned off late, that is, before cooking and after cooking for 5 minutes.

4. After taking a shower

After bathing, the water vapor in the bathroom is condensed and the humidity is very high. It must be ventilated and dried in time, otherwise it will easily produce a lot of mold and threaten health. If there is a window in the bathroom, open the window in time after taking a shower and open the bathroom door to ensure air convection; If there are no windows, you must install an exhaust fan with high power and good performance.

5. After renovation

Harmful substances such as formaldehyde in the renovated room need to be removed as soon as possible through window ventilation, especially in parts where more plates are used, such as wardrobes and cabinets, which will release pollutants such as formaldehyde into the room for decades. If the cupboard at home smells, you can open the wardrobe, cupboard, bookcase, drawer, etc. When you go out during the day, at the same time, open a small crack in the window to let the pollutants be fully released. If you feel that the indoor pollution is serious, you can open the kitchen and bathroom door at the same time and turn on the ventilation function of the ventilator, range hood or air conditioner to accelerate the diffusion of pollutants.

6. When cleaning

When cleaning the room, it is the time when the pollutants in the indoor air are the densest. When you clean the sofa, mattress or carpet, a large number of bacteria, dust mites and dander hidden in it will float in the air, and pollutants will be produced when using the vacuum cleaner. At this time, it is best to wear a mask and make sure that the window is ventilated to avoid inhaling fine particles. When sweeping the floor, it is best to do wet cleaning first, such as wiping the desktop and counter with a wet rag to reduce floating objects in the air.

7. Before going to bed

Half an hour before going to bed every night, you can open the window for ventilation 15 minutes. It is best to keep air convection, which can not only avoid the air pollution caused by automobile exhaust and factories during the day, but also increase the oxygen in the air, which is beneficial to sleep. When opening the window, old people and children should try not to move around the window. When sleeping, the doors and windows of the bedroom should not be closed to avoid hypoxia affecting sleep. You can open a small crack in the door or window to let fresh air into the bedroom. If the window is facing your head, you'd better cover it with curtains to avoid blowing straight!

When is it not suitable to open the window?

1, foggy day

In haze, dust and other weather, outdoor air is seriously polluted by particulate matter, so doors and windows should be closed to reduce the impact of air pollution on indoor air quality. You can choose to use air purifiers and humidifiers to improve the living environment.

2. When it rains lightly

In light rain, the wind speed is small, which is not conducive to the dilution and diffusion of pollutants. Various pollutants suspended in the atmosphere will form wet deposition due to precipitation erosion, which will aggravate air pollution. When it rains or clears up for a while, the outdoor air gradually becomes fresh and the negative oxygen ions in the air begin to increase. At this time, it is best to open the window for ventilation.

3. windy days

It is easy to raise dust when the wind blows, which leads to the diffusion of pollutants in the air. When the wind is weak, open the window, but don't fully open it, just open a crack. The wind force is above 5, so it's best to close the window temporarily.

4. Morning and evening rush hours

In the morning and evening rush hours, industrial pollution and automobile exhaust worsen air quality. Especially near the road, the air is more turbid. Living near the main traffic road, you should choose to avoid the morning rush hour around 10 when you open the window for ventilation.

Can I open the window for ventilation at five in the morning? 2 1? It depends on the living environment.

For example, the two air pollution peaks in the city are generally around sunrise and in the evening, which is the most unfavorable time to open the window. The correct way is to open the window for ventilation every morning 10 to 4 pm. During this period, there is less dust in the air and the air quality is relatively good. However, if you live in the countryside, because the population is not as dense as the city and the air quality is much better, you can open the window earlier for ventilation. Generally, it is more appropriate to open the window for ventilation at 7- 10 in the morning.

How often do you open the window for ventilation?

2. The duration and frequency of ventilation should be determined according to the indoor and outdoor environment.

If the outdoor air quality is good, it can be ventilated in the morning, at noon and at night, every time 15-30 minutes. When the outdoor air quality is poor, the number and time of air exchange should be reduced appropriately. In general, the space of 100 cubic meters is windless indoors and outdoors. Under the condition of temperature difference of 20 degrees Celsius, air can be exchanged in about 1 1 minute. Under normal circumstances, it can be ventilated for about ten minutes to half an hour every morning or at noon when the weather is fine, but it also depends on the weather conditions. For example, in rainy days, it is not advisable to open more windows, because the air pressure of the weather is very low at this time, and some pollutants on the ground are not easy to spread, so it is easy to enter the room through the window.

Is it okay to open the window for ventilation 24 hours a day?

3. Not good

Although window ventilation can replace air, improve air quality and avoid the breeding of bacteria and viruses, this benefit is based on good air quality, which is different at different times of the day. If you open the window for ventilation at the stage when traffic congestion produces a lot of exhaust gas, it will bring bad air indoors, which is even worse for your health. In addition, it is not suitable to open windows for ventilation in rain, snow, smog and dusty weather.

Do I need to open a window for air conditioning and ventilation?

4, need to open the window for ventilation

1, the outdoor air is fresh and cool in the morning. At this time, you can open all the windows without turning on the air conditioner, and try to let fresh outdoor air into the room.

2. When 12:00- 15:00 is the hottest, turn on the air conditioner properly and ventilate 10 minutes before turning it on; /kloc-after 0/-3 hours, turn off the air conditioner and open the window for ventilation. When necessary, an electric fan or a ventilator can be used to blow air outwards, so that indoor and outdoor air convection can be realized, and waste gas and harmful gases can be discharged outdoors. Ventilate for at least 20-30 minutes, then close the doors and windows and restart the air conditioner.

3. For people who work in an office building, ventilation for 20 minutes every 1-2 hours in a central air-conditioned environment can not only avoid air-conditioning diseases caused by excessive indoor and outdoor temperature difference, but also ensure that the brain stays awake during work and improve work efficiency.