"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?


Yes ... the gas volume (in your case 80 cubic feet) is when it is at
atmospheric pressure. By compressing the gas, you can make it fit into a
smaller volume, but the pressure goes up accordingly.

Take a look at this page (hint ... I did a google search using the search
term ' gas cylinder volume ' without the quotes):

http://www.engineeringtoolbox.com/co...me-22_843.html

Seems some old dead fellow (before he died) came up with Boyle's Law (betcha
his name was Boyle).

Simply put, if you squeeze 80 cubic feet of gas at atmospheric pressure into
a vessel with a volume of 40 cubic feet, the pressure in that vessel will be
twice atmospheric pressure.


Hope this helps, but I'm still trying to figure out what this has to do with
woodworking, other than it's a gas when it goes well!


Regards,


Rick