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- Dec 22, 2003
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This was asked before, I dug up an answer that 'seems' resonable:
http://forums.drslounge.com/showthread.php?t=109585&page=2&pp=25
I'm not an expert on airplanes or oxygen use by any means, but I ..*cough* borrowed *cough* this from an out of date pan american flight instructors guide for a DC-10...
....
l5. Q. What is the function and purpose of the rebreather bag?
A. The first part of the exhalation is rich in oxygen and
thus is suitable for rebreathing and it passes down
into the bag where it mixes with the incoming oxygen.
The bag then becomes extended and the slight pressure
thus formed causes the remaining portion of the
exhalation, which is high in carbon dioxide content,
to pass out through the sponge rubber discs. The
advantages of the rebreather bag are as follows:
(a) Rebreathing the oxygen rich portion of each
exhalation greatly increases the effective use
of the oxygen available.
(b) The carbon dioxide conserved by the bag
stimulates breathing.
(c) The humidity conserved by the bag prevents
dryness and soreness of the throat.
....
http://forums.drslounge.com/showthread.php?t=109585&page=2&pp=25
I'm not an expert on airplanes or oxygen use by any means, but I ..*cough* borrowed *cough* this from an out of date pan american flight instructors guide for a DC-10...
....
l5. Q. What is the function and purpose of the rebreather bag?
A. The first part of the exhalation is rich in oxygen and
thus is suitable for rebreathing and it passes down
into the bag where it mixes with the incoming oxygen.
The bag then becomes extended and the slight pressure
thus formed causes the remaining portion of the
exhalation, which is high in carbon dioxide content,
to pass out through the sponge rubber discs. The
advantages of the rebreather bag are as follows:
(a) Rebreathing the oxygen rich portion of each
exhalation greatly increases the effective use
of the oxygen available.
(b) The carbon dioxide conserved by the bag
stimulates breathing.
(c) The humidity conserved by the bag prevents
dryness and soreness of the throat.
....