A person breathes the oxygen contained in about 100 liters air per hour. That's 2,400 liters air per person per day. With a world population of 7 billion, this comes to 1.68 /\10 liters of air being depleted of oxygen every day. In a year that comes to 6.1 /\12 liters. Anybody care to calculate the air volume?
Impressive Figures
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Some say we are still breathing the same air as the dinosaurs and Julius Caesar.
Originally Posted By: BRZED
A person breathes the oxygen contained in about 100 liters air per hour. That's 2,400 liters air per person per day. With a world population of 7 billion, this comes to 1.68 /\10 liters of air being depleted of oxygen every day.
The main reason to not destroy all the plant life and trees on Earth!
A person breathes the oxygen contained in about 100 liters air per hour. That's 2,400 liters air per person per day. With a world population of 7 billion, this comes to 1.68 /\10 liters of air being depleted of oxygen every day.
The main reason to not destroy all the plant life and trees on Earth!
When I read the title of this, I imagined Mira Sorvino.
https://s.yimg.com/fz/api/res/1.2/2SQUhoJiq2.6xCUjbBoWPQ--/YXBwaWQ9c3JjaGRkO2g9ODQ0O3E9OTU7dz01NTI-/http://3.bp.blogspot.com/-lPWxUWTTM7A/T_GAzovKSBI/AAAAAAAAMxA/RnE4cetmEy8/s1600/Mira+Sorvino+calves+(3).jpg
https://s.yimg.com/fz/api/res/1.2/2SQUhoJiq2.6xCUjbBoWPQ--/YXBwaWQ9c3JjaGRkO2g9ODQ0O3E9OTU7dz01NTI-/http://3.bp.blogspot.com/-lPWxUWTTM7A/T_GAzovKSBI/AAAAAAAAMxA/RnE4cetmEy8/s1600/Mira+Sorvino+calves+(3).jpg
Originally Posted By: ZeeOSix
Originally Posted By: BRZED
A person breathes the oxygen contained in about 100 liters air per hour. That's 2,400 liters air per person per day. With a world population of 7 billion, this comes to 1.68 /\10 liters of air being depleted of oxygen every day.
The main reason to not destroy all the plant life and trees on Earth!
PLants grow better with a little more CO2 around. Don't expect the envirowhackjobs to tell you that.
Originally Posted By: BRZED
A person breathes the oxygen contained in about 100 liters air per hour. That's 2,400 liters air per person per day. With a world population of 7 billion, this comes to 1.68 /\10 liters of air being depleted of oxygen every day.
The main reason to not destroy all the plant life and trees on Earth!
PLants grow better with a little more CO2 around. Don't expect the envirowhackjobs to tell you that.
Our lungs are not 100% efficient at o2 extraction.
I remember something more around 33% mentioned back in college. So factor that in to your equation.
I remember something more around 33% mentioned back in college. So factor that in to your equation.
JTK
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It's a delicate balance for sure. There's approx 21% O2 in air. If it drops down to ~19% or below, we are effected badly. Same goes with too much O2.
The plants I work at draw in ~2 million cubic feet per hour of air, 24/7/365. We liquify the N2,O2 and argon, store it in tanks and truck it out continuously. We're still not short on air!
The plants I work at draw in ~2 million cubic feet per hour of air, 24/7/365. We liquify the N2,O2 and argon, store it in tanks and truck it out continuously. We're still not short on air!
That is right. It is amazing how few people know that. Ordinary air is only about 21% oxygen. Most of the rest is nitrogen, plus some trace gases like argon. If we lived in a 100% oxygen atmosphere a forest fire would explode like a nuclear bomb.
People need oxygen tanks on Mt. Everest. But at 29,000 feet the air is not under enough pressure.
When people breathe out I think there is still 18% oxygen. That is why it is possible to give rescue breathing to a person who is not breathing and also to give oxygen in CPR.
People need oxygen tanks on Mt. Everest. But at 29,000 feet the air is not under enough pressure.
When people breathe out I think there is still 18% oxygen. That is why it is possible to give rescue breathing to a person who is not breathing and also to give oxygen in CPR.
Originally Posted By: surfstar
Our lungs are not 100% efficient at o2 extraction.
I remember something more around 33% mentioned back in college. So factor that in to your equation.
Pretty easy math, with a human using about 800g of oxygen per day. Oxygen is 32 grammes per mole, so that's 25 moles. Each mole takes up 22.4L at STP, so that's 560L of oxygen per day.
Nitrogen to oxygen ratio is 3.76:1, so total air utilisation would be 2666L, very close to the OPs numbers....bear in mind, that's only 2.5Kq, (5 and a bit lbs).
That's the total "combustion air" for the day.
Power station behind me would run that in 0.0025 seconds.
Our lungs are not 100% efficient at o2 extraction.
I remember something more around 33% mentioned back in college. So factor that in to your equation.
Pretty easy math, with a human using about 800g of oxygen per day. Oxygen is 32 grammes per mole, so that's 25 moles. Each mole takes up 22.4L at STP, so that's 560L of oxygen per day.
Nitrogen to oxygen ratio is 3.76:1, so total air utilisation would be 2666L, very close to the OPs numbers....bear in mind, that's only 2.5Kq, (5 and a bit lbs).
That's the total "combustion air" for the day.
Power station behind me would run that in 0.0025 seconds.
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