Liquid air

Liquid air is air that has been liquified by compression and cooled to very low temperatures. It must be kept in a Dewar flask, as at room temperature, liquid air can absorb heat rapidly and revert to its gaseous state. It is often used for freezing other substances, and as a source of nitrogen, oxygen, argon, and other inert gases.

Related Topics:
Air - Liquified - Compression - Dewar flask - Room temperature - Nitrogen - Oxygen - Argon - Inert gas

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The most common process for distillation of liquid air is the two column Linde cycle. Air is fed at high pressure >60 psig (520 kPa) into the lower column, in which it is separated into pure nitrogen and oxygen-rich liquid. The rich liquid and some of the nitrogen are fed as reflux into the upper column, which operates at low pressure

Related Topics:
Linde cycle - Psig - Liquid

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