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Thinking too much?

Thread Status: Hello , There was no answer in this thread for more than 60 days.
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MKDVR

New Member
May 1, 2005
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I was just wondering in terms of cubic ft. About how many cubic ft. of air can the lungs hold and at what psi? I thought I read here once the lungs are good for 5 psi.
 
The first part is easy. For me, 7 litres equals 1/4 cu. ft. The next part doesn't seem right. If I pack full, my volume increases about 20%. If this was all due to pressure (no chest expansion during packing) that would be less than 3 psi, but it is obvious that my chest does expand and I would guesstimate under 1 psi.
After saying all this, there was a man on TV that could inflate an innertube until it blew up and my best effort just succeeded in making the inner tube look full.
14.7 psi=1013 mb= 29.92 in hg or something like that.

Aloha
Bill