Cryogenic Fluids - or Liquefied Gas Properties

Cryogenic properties as density, boiling points and heat of evaporation for fluids as hydrogen, methane, oxygen, nitrogen, fluorine and helium

Cryogenic services involves the handling of liquefied gases as helium, hydrogen, methane, nitrogen, oxygen and fluorine in temperatures between -150 oF to -450 oF.

The "cryogenic" properties of this materials can be summarized to:

Gas Helium
- He -
Hydrogen
- H2 -
Methane
- CH4 -
Nitrogen
- N2 -
Oxygen
- O2 -
Fluorine
- F2 -
Density at Normal Pressure and Temperature - NPT
(lb/ft3)
0.0103 0.0052 0.0415 0.0724 0.0827 0.0982
Boiling point at 1 atm
(oF)
-452.1 -423.2 -258.2 -320.4 -297.4 -306.6
Vapor density at boiling point
(lb/ft3)
1.06 0.084 0.111 0.288 0.296
Liquid density at boiling point
(lb/ft3)
7.62 4.37 26.46 50.41 71.27 94.2
Heat of vaporization
(Btu/lb)
8.8 193 219.2 85.2 91.7 74.1
Critical Temperature
(oF)
-450.3 -400.3 -116.5 -232.8 -181.1 -200.2
Critical Pressure
(psia)
33.2 187.7 673.1 492.3 736.9 808.3

NPT - Normal Pressure and Temperature: 14.696 psia 70 oF.

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