LOX: Difference between revisions
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=Liquid Oxygen= | =Liquid Oxygen= | ||
See [[Propellants]] page and [https://en.wikipedia.org/wiki/Oxygen Wikipedia's page]. | ''See [[Propellants]] page and [https://en.wikipedia.org/wiki/Oxygen Wikipedia's page]. See also [[Rocket_Main_Tank#Cryogenic_fuel_tanks|tank page]] for insulation.'' | ||
Boiling point of -182.95°C (90.20 K). | Boiling point of -182.95°C (90.20 K). | ||
Critical temperature of -118.59°C (154.59 K) meaning that it cannot stay liquid above this temperature. | Critical temperature of -118.59°C (154.59 K) meaning that it cannot stay liquid above this temperature. Critical pressure is 5.043 MPa (49.77 atm). | ||
Density: 1141 kg/m3 at 92.2K and 1 atm, 974.42 kg/m3 at 120K and 10bar | |||
1 Litre of LOX provides 840 Litre of GOX (gaseous oxygen) at 1atm/20°C. | 1 Litre of LOX provides 840 Litre of GOX (gaseous oxygen) at 1atm/20°C. | ||
Like any liquid, LOX vaporizes when stored above its boiling point. The vapour builds up to pressure that the tank will no be able to contain, so a relief valve must be put in place to compensate this evaporation. Insulation limits the rate of vaporization, the best being the vacuum space between a tank inner and outer walls, like Dewar flasks. | Like any liquid, LOX vaporizes when stored above its boiling point. The vapour builds up to pressure that the tank will no be able to contain, so a relief valve must be put in place to compensate this evaporation. Insulation limits the rate of vaporization, the best being the vacuum space between a tank inner and outer walls, like Dewar flasks. | ||
Latent heat of vaporization: 213 kJ/kg (6.82 kJ/mol). | |||
[http://www.nasa.gov/centers/wstf/laboratories/oxygen/index.html About] safety and LOX systems, NASA White Sands Test Facility. | |||
[[Category:Rocket|LOX]] | |||
Latest revision as of 22:49, 5 January 2013
Liquid Oxygen
See Propellants page and Wikipedia's page. See also tank page for insulation.
Boiling point of -182.95°C (90.20 K).
Critical temperature of -118.59°C (154.59 K) meaning that it cannot stay liquid above this temperature. Critical pressure is 5.043 MPa (49.77 atm).
Density: 1141 kg/m3 at 92.2K and 1 atm, 974.42 kg/m3 at 120K and 10bar
1 Litre of LOX provides 840 Litre of GOX (gaseous oxygen) at 1atm/20°C.
Like any liquid, LOX vaporizes when stored above its boiling point. The vapour builds up to pressure that the tank will no be able to contain, so a relief valve must be put in place to compensate this evaporation. Insulation limits the rate of vaporization, the best being the vacuum space between a tank inner and outer walls, like Dewar flasks.
Latent heat of vaporization: 213 kJ/kg (6.82 kJ/mol).
About safety and LOX systems, NASA White Sands Test Facility.
