thedeckking:
Not sure about the whole which gas is cheaper thing but I do know my maths. The conversions will make a big difference:
1 liter is 1000cubic centimeters not 1000 cubic meters.
A cubic meter holds 1,000,000 cubic cm.
Therefore 1 liter is 0.001 cubic meters
Therefore if there is 47litres in the cylinder this only converts to 0.047 cubic meters.Hope this helps
I completely agree with your maths and understand where you’re coming from, however, the point some people are missing here is that many gases are compressed/refrigerated to turn them into a liquid for ease of storage/transport. So a 47kg cylinder will probably contain somewhere in the region of 35kg (a guess) of actual liquid. When you open the tap and let the liquid out it instantly turns to a gas/air mixture which would then create say, 100000lts of combustable gas/air mixture. Figures all guesswork by the way 'cos I have neither the brains nor ability to do the math. 