So this is something that has bothered me for years. The idea that we attempt to seal our homes to keep the heat in, plus we have a gas stove that uses oxygen when it burns.
Just to give you an idea, here is a demo of a candle burning that oxygen
http://www.youtube.com/watch?v=FPbMvchZb6A If a kitchen is 10x10x8. That would be 800 cubic feet.
A burner uses a lot more oxygen than a candle.
If we were to say that a burner uses 10 time more than a candle, and that that glass was a .... 12 ounce glass
And we could go so far as to guess that the the candle used the air in the glass in one second ....
One fluid ounce is 1.804 cubic inches ... that's 21.684 cubic inches.
1728 cubic inches in a cubic foot.
So the burner would use up all the air in one cubic foot in about 8 seconds.
6400 seconds for the whole room? 106 minutes.
So .... given all the slop and assuming an air tight kitchen and not figuring in how much oxygen the human subject is consuming, the human
should be dead in about an hour and a half. (due to some sloppy measurements, maybe 30 minutes, maybe six hours)
Sound about right?
Of
course, even the tightest houses leak, and there are all sorts of other variables at play here. But the bottom line I'm thinking about is: I don't like the idea of getting too carried away with sealing a home to keep the heat in. Further, I don't like the idea of gas stoves: they take oxygen out of the air I'm breathing. At least a
rocket mass heater pulls oxygen AND nitrogen out of the room - not just the oxygen.