In hot summer, many people like to turn on the air conditioner at night when they sleep. It is inevitable that opening the air conditioner will close the doors and windows tightly. Will opening the air conditioner and closing the windows cause oxygen deficiency in the enclosed space? What's the harm to the human body?
Don't worry, it won't be. The air conditioner has air circulation. Put in the air cooling outside, there will be no lack of oxygen. Even if the windows of the bedroom are closed tightly, it won't be a closed space. According to the calculation, the average lung capacity of each adult (male) is 3500ml. Sleep at night is the breath rate of 70%. Breathe 18 times per minute. So the total air change volume in 8 hours is 3500 * 18 * 60 * 8 * 70% = 21.17 cubic meters. The 12 square bedroom volume is: 12 square meters * 2.8m = 33.6m3. (this article is exclusively compiled by WYH, editor of sihai.com. If you need to reprint it, please indicate the source and source. Related article link: http://www.4hw.com.cn/life/jiankang.html)
According to the calculation, if the doors and windows of the room are closed tightly, there will be no oxygen shortage, let alone air circulation, but a basin of water or humidifier can be considered if there is water shortage.
People are not so easy to lack oxygen. The oxygen in a house is enough for a person to use in a night. Your so-called being woken up by suffocation is more likely to be psychological or hot. (this article is exclusively compiled by WYH, editor of sihai.com. If you need to reprint it, please indicate the source and source. Related article link: http://www.4hw.com.cn/life/jiankang.html)
However, this problem can also be easily solved, that is, put a fan in the room, turn off the air conditioner, turn on the fan to blow on yourself, to ensure that you feel comfortable and do not feel lack of oxygen.
In addition, from the perspective of energy conservation, it is not a good choice to install exhaust fans. Although all the exhaust air is hot, the air coming in from the door and window seams will still stir the indoor air, and the air conditioner will run away soon.