Re: More on Air Consumption...

In our last episode, Thomas O. Magann Jr. said:
>Actually, not's not quite what they say. Page 11 of the Concordanance
>describes the air as thinning with altitude. On Page 7 they comment that the
>thin air eventually becomes unbreatheable, but, at that point a person starts
>breathing air brought along with them in their own envelope.
>
>Which implies that envelopes aren't formed at sea level pressure, but at
>level quite a bit thinner, although still thick enough to breath.

	That doesn't make sense to me.  I've read that line quite a few
times, and I still don't get it.  If the air around me is about to become
unbreathable, then the air I my envelope will pick up is barely breathable.

>I'm ex Navy.

	Then maybe you can define SCFH... (:

>trust me, on a cruise, activity levels for the deck crew (which
>is every one but the Officers in a non tech setting) rarely averages the same
>as in more sedate jobs.

	Right.  I agree with you.  I'm just repeating what that paper said.
Maybe that raised level of activity *is* 1 SCFH.

>Actually, a cubic foot of trash takes 8 cubic feet of air along with it. How
>much trash do you think is generated by, say, 30 people? Remeber, this
>includes sewage, water from the galley, a lot scraps and trimming from food
>preperation. Wash water from scrubbing the decks, etc.

	Right, sorry.  I miscalculated.  It's turning into one of those
days... (:

	Does anybody have any other hard numbers to work from?  I tried
working with Phantom's figure of 1 ft^3 per minute, and got that the amount
of air displaced by 1 ton (2700 ft^3 * 8 = 21,600 ft^3) would be used up
in 15 days.  Does that sound more realistic?

	I just noticed that my example from the last post was wrong.  The
volume of the room should have been 21,600 ft^ (216x10x10), not (27x10x10).
Hmmm... the 15 days *almost* seem about right for something this size.  That
is, of course, assuming no loss, and no death due to carbon monoxide
poisoning.  Any thoughts?

-Static

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