In article
,
Bret Cahill wrote:

Hoop stresses of a tube under pressure increase with the diameter but
volume increases with the square of diameter. High volume/weight
pressurised gas storage would, therefore, favor a bigger cylinder.

That's a wash. Container weight scales with area times thickness, and
thickness scales with hoop stress, so the weight scales as
(diameter*length) * diameter, just as volume does.

(Neglecting minimum gauge and other non-theoretical effects.)

--
David M. Palmer (formerly @clark.net, @ematic.com)