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On Thu, 5 Feb 1998, claus agersbaek wrote: > At 12:44 05/02/98 GMT, bcolman@gt*.ne* wrote: > > > > Can anyone help me out... > > > > At 245 FSW, there is 1200 PSI in a 80Cu.Ft Cylinder, if the divers > >gas consumption is .7ft/min, how long will it last..?? I cant seem > >to find the right formula..?? > > > the preasure @245fsw is (245/33 + 1)= 8.42 ATM > you are using 8.42 times as must @ 245FSW > 80Cu.Ft / (.7Cu.ft/min *8.42) = 13.5 min > A better question is what the hell the diver is doing at 245ft with an 80cu ft cylinder. Especially if it only has 1200 PSI in it. If you didn't answer "it's a deep bailout bottle full of trimix" then the diver is an idiot, using the wrong equipment, and an air hog, and doesn't have enough gas to get safely back to the surface. Plus of course, I'd have to assume that's *air* in that 80cu ft cylinder, since no sane trimix diver would dive a single 80 (except as bailout), and that puts your PO2 at 1.76 - unacceptably high. I won't get into the narcosis issues... -Will -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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