Compressed Air Best Practices - November 2008 - (Page 25) Compressed Air Industry STEEL & METALS | 11–12/08 | Pipe Layout Survey the layout of the pipe system. As far as possible eliminate elbows, minimize changes in the direction of airflow, remove other constriction, reduce excessive pipe lengths and isolate unused compressed air piping because this may be a significant source of air leaks. All compressed air pipe systems should be designed with the following points in mind: p Pipe diameters selected should minimize pressure drop and allow for possible expansion Fittings and valves selected should minimize restriction to airflow. Large radius bends are preferred to elbows, for example. Full-throated valves such as ball valves should be used rather than gate valves If replacing pipe, consider smooth bore pipe to reduce friction All piping must be well supported to minimize movement and sagging. This will help to minimize leaks, avoiding build up of corrosion and fluids and lengthen the life of the pipe system. p p p Operating Costs Compressed air represents one of the largest opportunities for immediate energy savings, which accounts for an average of 15% of industrial facilities consumption of electricity and most of the savings are achievable with modest investments compare to total costs. 25 http://www.airleader.us http://www.airleader.us
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