LOX: Difference between revisions
→Liquid Oxygen: latent heat of vaporization |
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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: | 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. | ||
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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. | Latent heat of vaporization: 213 kJ/kg (6.82 kJ/mol). | ||
Revision as of 02:44, 8 November 2012
Liquid Oxygen
See Propellants page and Wikipedia's page.
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).
