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Jul 22, 2024 · Based on oxygen alone, estimates are that the average person could survive in a completely sealed, airtight room for 12 full days! Running out of oxygen in a room is quite unlikely. The Change Is In Carbon Dioxide. While oxygen levels are pretty much constant over the day, what does change is the amount of carbon dioxide in the air. We tracked ...
- Thomas Talhelm
Not really. Tests in a real apartment — with as many as seven people in a small room — show less than 1% change in oxygen levels in a closed room. While oxygen levels are pretty much constant over the day, what does change is the amount of carbon dioxide in the air.
The answers I found online were suggesting O2 doesn't change much, but CO2 can increase to harmful levels in closed rooms (as airtight as realistically possible). If that is indeed the case, then will my room ever regain normal air composition (proper O2 and CO2) levels even if I open my doors from time to time with the tiny hole omnipresent?
Sep 19, 2024 · Factors Affecting Oxygen Levels in a Closed Room. Several factors influence oxygen levels in closed spaces. Room size plays a vital role, as larger rooms have more air volume, making oxygen depletion less likely. Ventilation is equally important, as rooms with air exchange systems or windows allow fresh air to enter.
Nov 4, 2016 · If we ignore the volume of your body, initially the room is filled with VO2(t0) = 0.21 * 5 = 1.05 m3 of O2. With you breathing in the room, you can consider the volume of O2 in the room as a function of the time: VO2(t) = VO2(t0) - C * M * t where M is your weight in kg, and where C is converted to m3/(min.kg).
In a completely airtight small room of 3 meters by 4 meters and average height, one person can live 2 or 3 days and nights without running out of oxygen. They will reach toxic levels of CO2 before then, though. Architects simply avoid making rooms truly airtight.
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At STP, Oxygen has a density of 1.429 kg/m 3, so 1m 3 of air will contain 0.3 kg of Oxygen. A 12ft x 12ft x 9ft room has a volume of 36.7 m 3, meaning that it contains 11 kg oxygen. The minimum oxygen level for bare survival is somewhere around 6%, meaning that 7.85 kg of that oxygen is available (assuming there's a fan or something to keep it ...
