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ahhh, very good job both of you.. On Fri, 29 Dec 1995, Richard Pyle wrote: > > >This is the "Steady State" Semi-closed equation, and applies to constant > > >mass-flow type semi-closed rebreathers. It assumes a constant workload > > >(metabolic rate), constant loop volume, and that inert gas absorbed by the > > >body and other constituaents in the loop are negligible. > > > > > > Rich, could you please give me the formula for what the stock > > market is going to do tomorrow, and will this work down at Calder > > Race track as well? - G > > George's point is very well taken. I provided the formula, but that > doesn't mean the formula has any representation of reality. I want to > start up the "don't put too much faith in numbers" thread, but we've > heard it all before. If you read my report on the PNG trip, you'll know > that my diving partner and I have very different metabolic rates, even at > the same workload. With the enormous range of physiological variability > in the population, precise numbers having to do with such things as > decompression schedules, oxygen toxicity, FiO2 inside a semiclosed > rebreather loop, scrubber canister durations, etc. etc. etc., are silly > and potentially dangerous. You have to look at formulas and numbers in > diving as rough guides at best. > > So, yes, that formula is the formula for calculating steady-state FiO2 in > a constant mass flow type semi-closed rebreather; however, it's only as > useful as you have confidence in your metabolic O2 consumption rates at > various workloads. From my experience, I would have very little > confidence in my own metabolic rates for using such a formula. > > Aloha, > Rich > > P.S.: > > ******************************************************************* > "WHATEVER happens to you when you willingly go underwater is > COMPLETELY and ENTIRELY your own responsibility! If you cannot > accept this responsibility, stay out of the water!" > ******************************************************************* > > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. >
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