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GENERATION NITROGEN GENERATOR SYSTEM MANUAL
NITROGEN MEMBRANE PRINCIPLE OF OPERATION
Refer to Figure 2 below. Compressed air flows into the hollow fiber membrane. Various air components,
such as oxygen, nitrogen, carbon dioxide and water vapor pass through the membrane wall, but the rate at
which this occurs differs for the various gases. Oxygen and water vapor have a high diffusion rate and
diffuse rapidly through the membrane wall. Nitrogen has a low diffusion rate and penetrates the membrane
wall slowly, mainly at the end of the hollow fibers. The purity of the nitrogen at the end of the fibers depends
on the velocity of the gas flow. The nitrogen capacity of the membrane depends on the flow rate, operating
temperature and operating pressure of the compressor.
Figure 2 – Membrane and Gas Flow
N2-Gen-Manual REV 3.8, 8/2014
®
Patented 2nd Generation Nitrogen Generator Systems are manufactured and distributed by Waukesha
Service & Components, a division of
SPX Transformer Solutions, Inc. U.S. Patent Nos. 6,581,694; 6,568,287; 6,062,821; 5,902,381 and 5,744,764.
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