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[PSUBS-MAILIST] Ambient pressure design considerations
Stan,
trying to make myself clear and to stay on tracks:
You've said: "The Sport Sub has a 'continuous flow' cabin air flush, but the
drawback is that the air consumption is high."
I've taken this as a generic statement on continous flow systems and now I
realize that you were talking specifically about the Sport Sub gear. I'm not
familiar enough with the SS to agree or disagree. What's it's air feeding
rate ?
Question: Would you think that a continous flow system (air, scrubberless)
will always lead to a high air consuption rate ?
best regards
Jorge L.
>Hi Jorge;
>We're talking apples vs. oranges. If you are going to use a scrubber, I
agree that oxygen consumption is low compared to air consumption without a
scrubber.
>However, in the absence of a scrubber, ventilation requirements are 2 scfm
of air per person at rest and 4 scfm of air per person not at rest (NOAA
Diving Manual.) The flow rate is dependent on the number of occupants, not
on the cabin volume.
>The Sport Sub does not use a scrubber.
Stan
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