How do we make this stuff?
With the help of
The Nuvair Nitrox System
uses semi-permeable membranes to produce Oxygen enriched air (nitrox). The
nitrox at up to 40% O2 can then be compressed with an oil
lubricated high-pressure compressor into scuba tanks or a storage bank for
later use.
Undersea
Breathing Systems Intl. (now Nuvair) have supplied electric, gas, diesel and hydraulic-powered Nitrox Membrane Systems for commercial, sport, live-aboard and
government agencies all around the world. These customers have used the
nitrox to increase bottom time, safety, productivity and profit.
The "New & Improved" NUVAIR membrane system is up to 20% more efficient and
easier to use. The system requires an air source to supply air to the
membrane for separation. This air source (supply air) can be from
high-pressure storage tanks or from a low-pressure compressor. First, the
supply air pressure must be reduced to 80-300 PSI for use in the membrane. A
regulator is used to adjust the input pressure and volume of nitrox to be
made. The air then travels through filtration to ensure a
proper air quality that will not damage or plug the membrane fibers. After
the filtration, the air is heated to a stable temperature that is constant
and optimal for the membrane permeation. This temperature is about 110
degrees F. The membrane is made up of thousands of hollow fibers. Oxygen
permeates faster than nitrogen through these fibers. At the nitrogen outlet
there is a fixed orifice that will allow the right amount of nitrogen to
escape at maximum output to produce about 43% O2 at the permeate
outlet.
The permeate then exits
the membrane into a static mixing tube that allows ambient air to mix with
it. The gas mixture is analyzed with an inline Oxygen sensor before
delivery to the HP compressor for compression. As the Gas Blender
increases the input pressure on the regulator, the volume of nitrox produced
is increased as well as the Oxygen percentage of the total gas mix.
Decreasing the input pressure will lower the Nitox mixture.
Why DIVE BVI chose the
Nuvair Membrane System:
Oxygen Analyzer
-- RELIABLE
-- Mix accurate to one tenth of 1%
-- Produces from 21% to 40% oxygen
-- Unlimited continuous on-site production
-- Treat like air
-- No oxygen required
-- High volume output means no waiting for fills
Please check out Nuvair's website at
www.nuvair.com
DIVE BVI
