The expansion ratio of a liquefied and cryogenic substance is the volume of a given amount of that substance in liquid form compared to the volume of the same amount of substance in gaseous form, at room temperature and normal atmospheric pressure.
If a sufficient amount of liquid is vaporized within a closed container, it produces pressures that can rupture the pressure vessel. Hence the use of pressure relief valves and vent valves are important.Safetygram-27 Cryogenic Liquid Containers
The expansion ratio of liquefied and cryogenic from the boiling point to ambient is: nitrogen – 1 to 696 liquid helium – 1 to 745 argon – 1 to 842 liquid hydrogen – 1 to 850 liquid oxygen – 1 to 860 neon – Neon has the highest expansion ratio with 1 to 1445.
See also Liquid-to-gas ratio Boiling liquid expanding vapor explosion Thermal expansion
References
External links cryogenic-gas-hazards