Oxygen Advantages and Disadvantages
Name: Farris R.
I have COPD (emphysema) and I was wondering if you could explain the
advantages or disadvantages of using liquid oxygen compaired to oxygen
supplied by cylinders or a concentrator. Thank You
On a net weight basis, liquid oxygen supplies a lot more oxygen than a
pressurized cylinder, and there are fewer problems with possible leakage
because the pressure is essentially 1 atmosphere with liquid oxygen. The
relative gross weight of the two systems needs to be taken into account. How
much effort it takes to lug the thing around.
Availability and storage also need to be taken into account. You can store
several gas cylinders at home for easy replacement, but you would probably
not be able to keep liquid oxygen at home because of risk [it's not
flammable itself but any combustion that comes into contact with pure oxygen
will be a conflagration], and it evaporates even in a well insulated dewar
There may be some COPD websites on the internet. You might search for an
organization and/or support group chat room and see what others have to say
about the relative merits.
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Update: June 2012