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  2. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    Liquid oxygen is the liquid form of molecular oxygen. It has a density of 1.141 kilograms per litre (71.2 lb/cu ft), slightly denser than liquid water, and is cryogenic with a freezing point of 54.36 K (−218.79 °C; −361.82 °F) and a boiling point of 90.19 K (−182.96 °C; −297.33 °F) at 1 bar (15 psi).

  3. Normalair - Wikipedia

    en.wikipedia.org/wiki/Normalair

    Normalair achieved most success with portable oxygen systems, including the equipment supplied for the first successful ascent, by Tenzing and Hillary, of Mount Everest. [ 3 ] Relatively short-lived was Normalair's entry into the automotive air conditioning market, where the systems were optional extras on Wolseley Wolseley 6/110 , [ 4 ] Austin ...

  4. Air Liquide - Wikipedia

    en.wikipedia.org/wiki/Air_Liquide

    On May 25, 1902, and after two years of research, Georges Claude developed a process for liquefying air in order to separate the components (oxygen, nitrogen, argon). On November 8, 1902, Paul Delorme gathered twenty-four subscribers, mainly engineers, to financially support the project, [5] and became the first president of "Air liquide, a company for the study and exploitation of Georges ...

  5. Oxygen tank - Wikipedia

    en.wikipedia.org/wiki/Oxygen_tank

    Medical use liquid oxygen airgas tanks are typically 2.4 MPa (350 psi). [citation needed] All equipment coming into contact with high pressure oxygen must be "oxygen clean" and "oxygen compatible", to reduce the risk of fire. [3] [4] "Oxygen clean" means the removal of any substance that could act as a source of ignition. "Oxygen compatible ...

  6. Oxygen breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Oxygen_Breathing_Apparatus

    The bags along either side of the chest unit cool the air mixture before inhalation and is a surprisingly effective system, with the air being quite cool when entering the face mask. [ clarification needed ] There is a 60-minute timer at the top of the chest unit which, during the fighting of a casualty, [ clarification needed ] is set for only ...

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