Expansion ratio

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.^[1]

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.^[2]

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.^[3]^[4]

[1]
Rick Houghton (2007). Emergency Characterization of Unknown Materials. CRC Press. ISBN 978-0-8493-7968-0.
[2]
Safetygram-27 Cryogenic Liquid Containers Archived 2008-12-07 at the Wayback Machine
[3]
Handbook of Compressed Gases. Compressed Gas Association. Springer Science & Business Media. 2012-12-06. p. 76. ISBN 9781461306733. Retrieved 27 July 2022.{{cite book}}: CS1 maint: others (link)
[4]
"Characteristics". The Linde Group. Archived from the original on 2012-02-18.

cryogenic-gas-hazards

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[1] [1]
Rick Houghton (2007). Emergency Characterization of Unknown Materials. CRC Press. ISBN 978-0-8493-7968-0.

[2] [2]
Safetygram-27 Cryogenic Liquid Containers Archived 2008-12-07 at the Wayback Machine

[Association2012-3] [3]
Handbook of Compressed Gases. Compressed Gas Association. Springer Science & Business Media. 2012-12-06. p. 76. ISBN 9781461306733. Retrieved 27 July 2022.{{cite book}}: CS1 maint: others (link)

[4] [4]
"Characteristics". The Linde Group. Archived from the original on 2012-02-18.

[1]

[2]

[3]

[4]

Expansion ratio

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