Many people choose to drive out on a road trip, encounter some special circumstances, and think that there will be a night in the car. There are also many self-media self-driving tours, in order to save costs, spend the night in the car, put the rear discharge upside down, pad the quilt, the space is still flat, sleep is still very comfortable, but there is a problem, the oxygen in the car is enough to sleep in the car for one night?
Today the old driver will do a scientific truth-seeking, telling you whether there will be lack of oxygen in the car overnight, and there is an answer to the lord in the calculation, only counting the exhaled oxygen, not counting the exhaled oxygen. In fact, the air exhaled by humans still contains oxygen, otherwise you will give people artificial respiration and blow carbon dioxide into people's lungs?
How much oxygen is in the car
To understand this problem, we must first figure out the volume of the car car, the general car car content volume is about 2500 liters, and the SUV car content volume is about 3500 liters. The oxygen content in the air is 21%, that is to say, with the door closed, the oxygen content of the car is about 525 liters, and the oxygen content of the SUV is about 735 liters. The general situation calculated here, such as you go to Everest Base Camp and sleep in the car for one night, where you have to take oxygen outside, let alone in the car.
Lack of oxygen after a night's sleep in the car?
The average adult breathes 7 or 8 liters of air per minute when resting, about 20% of the inhaled air is oxygen, and the exhaled air contains 15% oxygen, so it consumes about 5% of the oxygen in the air every minute and converts it into carbon dioxide. That is, a person needs to consume 288 liters of oxygen and exhale 288 liters of carbon dioxide in one night (calculated on a 12-hour basis).
Theoretically, whether it is a car or an SUV, as long as you are not in bed, go to bed early and get up early, and maintain a normal work and rest, the oxygen content is enough.
What are the risks besides hypoxia?
But don't think that sleeping with the window closed is foolproof, the problem is, you exhale 288 liters of carbon dioxide. When the concentration of carbon dioxide in the air reaches 2000 PPM (2%), fatigue is caused. When it exceeds 5000 PPM (5%), it will cause serious confusion in human body functions, making people unconscious and delirious. And you exhale 288 liters of carbon dioxide. The carbon dioxide content in the car is close to or 10%, which is a very dangerous number, which is likely to cause unconsciousness or even shock. Although closing the doors and windows tightly will not keep the car completely closed, for the sake of caution, we recommend that you leave seams when you sleep, and do not tighten the doors and windows because the temperature outside the car is too high or too low.
In addition to carbon dioxide, a major killer of rest in the car is to turn on the air conditioner. Some people choose to park in a sheltered place, where the air does not circulate, and turn on the air conditioner, but they do not know that this may be fatal. Long-term idling of the car will emit a large amount of carbon monoxide, coupled with the lack of air circulation, carbon monoxide will enter the car from the air conditioning outlet, causing poisoning of the occupants in the car. So remember, parking and turning on the air conditioner should be in an open place, and the windows cannot be completely closed.
Finally, we give the answer for this issue, sleeping in the car for one night oxygen content is enough, but beware of the harm of excessive carbon dioxide concentration to the human body.