The air distribution systems present basically the same characteristics as water systems described in the previous section. Air headers and regulators convey compressed air from central compression plants to process units. It includes isolation valves, fluid traps and intermediate storage vessels. Pressure losses have to be compensated by higher pressure at compressor discharge. At point of use, a feeder pipe with a final isolation valve, filter and regulator delivers compressed air to processes.
Opportunities are also similar to water systems, like proper design of pipes, leak detection and repair and avoidance of improper use. Another good procedure is to regulate all uses to the lowest possible pressure, relieving compressor duty. A special aspect is to eradicate, whenever possible, use of air as energy utility in air motors because compressed air is usually the most costly utility and should be saved for specific uses.
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