How Does A Mountain Air Generator Work?

The Mountain Air Generator produces low-oxygen air by removing a controlled amount of oxygen from air, using a process called Pressure Swing
Adsorption (PSA).  Invented in the 1950's, PSA is the most common technology in industrial and medical air separation applications.  The recovery of
concentrated nitrogen (reduced-oxygen air) from PSA processes (with carbon dioxide and water as co-products) is a classic process that has been around
for more than 30 years.  The same basic type of system is used by all our major competitors.

In PSA, entering air is compressed and fed to two or more beds containing a molecular sieve material called zeolite.  A zeolite is an inert, micro-porous
mineral with a cage-like molecular structure, just the right size to allow oxygen to pass freely, while retaining nitrogen, water vapor, and carbon dioxide.  A
timing circuit periodically pressurizes and depressurizes the bed, siphoning off oxygen and releasing the retained gases, which are captured into the
product stream.   By combining two or more beds, the process "swings" from one zeolite bed to the other, pressurizing half the beds while depressurizing
the others to achieve continuous operation.

The reduced-oxygen air produced by PSA is clean and chemical-free.  It contains the normal amount of humidity and carbon dioxide.  The process
consumes nothing except air and electricity.
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