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What is PSA and how does it work?
PSA stands for pressure swing adsorption. Absorption is actually a process which involves a chemical change. Generally accepted use of the term "absorb" implies a sponging effect. The term has been misused for a long time. Since nothing we do is chemical, only physically separating molecules, the process is correctly called adsorption. It’s the process of separating molecules of gas from each other. We use compressed air to pressurize a vessel filled with a material, either carbon or zeolites, which actually sift molecules by physical or structure. By forcing air into this pressure vessel or sieve bed filled with sieve, we cause N2 molecules to be trapped in the sieve, while the other gas floats free in the bed. After a period of time, we release a bit of the pressure in the sieve bed to draw off the N2 molecules and collect them in a surge/storage tank for use by the application. We then open a valve in the sieve bed and release all of the pressure in the sieve bed, forcing out the captured molecules of the unwanted gases and cleansing the sieve for the next cycle.
The molecules of gas released into the air immediately combine back to air’s ambient percentages since we are, in effect, diluting all of the air on the planet with our released gas. With our systems, we use two sieve beds that work at opposing ends of the cycle to provide a more consistent flow of our captured gas into the surge tank.
How long do our generators last?
Our products are designed and built under the supposition that they must operate for decades in the most remote locations in the world, under the harshest extremes of climate, using every possible combination of voltages and hertz. Our nitrogen carbon sieve is guaranteed by the manufacturer to last forever, as long as there is no oil incursion to the sieve. We don't know how long our generators really last since they've only been around since the late 1980's. We expect at least 20 – 25 years life from a nitrogen system.
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The myths about gas generation
