In article ,
mawtg wrote:
does anybody know how a gas cylinder measuring 6" dia and 32" tall can
have 80 cu ft of gas? how is this figured?


The volume of the cylinder is piR^2H, so (roughly) 3.14X3X3X32=904 cu
inches. Divide by 12X12X12=1728 to convert cu in to cu feet=.523, lets
say 1/2 a cubic foot for convenience and to allow for cyl wall
thickness, etc. If it's a common gas cylinder it will usually be
compresssed to about 2500psi, so if we let that 1/2 CF expand by
releasing it tio atmospheric pressure of roughly 15psi, it would take
up .5X2500/15=83 cu ft, which is about right.
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Larry Wasserman Baltimore, Maryland