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Date: Tue, 3 Sep 1996 16:25:17 -0700
To: "Alan D. Secor" <secor@bt*.ib*.co*>
From: cherf@ci*.co* (Scott Cherf)
Subject: Re: Pressure in a closed system (like a rebreather).
Cc: techdiver@terra.net, secor@bt*.ib*.co*

At 5:45 PM 9/3/96, Alan D. Secor wrote:
>I've discussed this question with a couple of dive buddies and we couldn't
>>reach a consensus.  Assuming you have a fully closed rebreather, and
>ignoring >venting of the breathing loop, what would happen to the pressure
>in the loop
>as O2 is being metabolized if no dilutent or external O2 were added? Would
>the pressure remain the same or would it decrease?

If I understand the question correctly, the pressure should remain tied to
depth.  The breathing loop should always be at ambient regardless of its
volume.  As gas is metabolized the loop's internal volume diminishes, but
since the counterlung is flexible, pressure remains constant with depth.

Scott.

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