Compressed Air
The Basic of Compressed Air
Executive Summary About Compressed Air By Edwin Poh
Without compressed air, manufacturers or your mechanic will be changing tires with brute force and cannot work efficiently.
Compressed air are generated by air compressors, many types of compressors are available in the market these days such as piston type, screw element type, scroll type, vane type, and high volume centrifugal/turbo type just to name a few. Basically an air compressor gets its “source” from ambient, air traveling through inlet air duct and into a compression chamber. Absolute Pressure(abs) = Atmospheric pressure(atm) + Gauge pressure(g)
For example, a normal mechanic air tool operates at about 100 PSIG, which means 14.7 PSI(atm) + 100 PSIG = 114.7 PSI(abs). Compressed air can range from as little as 30 PSI(abs) for artist air brush up to 20,000 PSI(abs) at some petrochemical, oil and gas, and mining application. For example, a compressed air controlled water valves in a natural gas plant, steam plant or even a nuclear reactor plant where it is best operate remotely via a control system.
Compressed Air Leaking?
Executive Summary About Compressed Air By Bill Wade
air compressed
Reducing air leaks in your plant can save thousands of dollars annually. You will often hear the gentle (or perhaps not so gentle) hissing of air escaping from the exhaust port of your air valves.
Usually you’ll have one air valve connected to one air cylinder. While an air valve and cylinder are doing work of course there will be air being exhausted continuously from the air valve exhaust ports.
If the rod is out, air will be entering the air port at the rear of the cylinder. Take the air line that is charged, that is, the air line that is supplying air to the cylinder, and crimp it. Many air lines are made of polyethylene or polypropylene, and it’s quite easy to make a bit of a bend in the air line, effectively shutting off air to the cylinder.
If the air has stopped escaping the valve’s exhaust port, then it’s the seal in the cylinder that’s at fault.
If, after ensuring that the air to the cylinder is completely stopped, air continues to exhaust from the exhaust port of the valve, then it’s the seal inside the air valve that’s at fault.
Regardless of which is the culprit, the air valve or the cylinder, get it fixed….fast! Compressed air costs a bundle.
Please read the articles about portable compressors, drywall tools
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