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David Shimell (shimell) wrote: > > Phil > > 1 litre of gas = 0.0353 Cu Ft > 1 bar = 14.5034 PSI > > Metric example: > > 10 l cylinder at 232 bar = 2,320 litres of gas. > > Imperial Example: > > (I think typical cylinders in the states are 207 bar = 3,000 PSI) > > 80 Cu Ft Cylinder is the volume of gas contained within the cylinder > measured at 1 bar. Thus The rest of your post looks correct, this statement is incorrect. An '80' actually holds slightly less than 80 cu ft of air at it's rated pressure (207 bar / 3000psi) Thus 80 cu ft / 207 bar = @ 0.38 cu ft. at 1 bar. Which you go on to say 2 paragraphs later... > > vol = pressure * water capacity > 80 = 207 * water capacity > > Thus the water capacity of 80 CuFt (207 bar or 3,000 PSI) cylinder = > 0.386473 cu ft water = 10.9434 litres Drew > > An 80 CuFt cyl;inder only contains 80 CuFt when it is pumped to its > working pressure. > > But I'm with you that the diving population should convert to the simple > metric system. I'm with you on that too. ALL of the math involved in sport and technical diving is SO MUCH easier when done in the metric system. It's also easier and makes more sense to speak of depth in meaningful units like meters instead of feet. A meter of depth change has a much more significant change in pressure than a foot of depth change, etc. Drew > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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