Table 4

Summary of the results of system protection with applied optimization

Type, diameter and thickness of pipeSt52 steel pipe of diameter 1,900 mm and thickness 14.2 mm
Air-chamberTotal volume = 10 m2
Orifice diameter (mm)Outlet pipeInlet pipe
Air-inlet valves 300 32 31
300 35 34
300 38 37
300 41 40
300 44 43
300 47 46
Total cost of pipes and water-hammer controllers: US$4,382,170 Type, diameter and thickness of pipeSt52 steel pipe of diameter 1,900 mm and thickness 14.2 mm Air-chamberTotal volume = 10 m2 Orifice diameter (mm)Outlet pipeInlet pipe Air-inlet valves 300 32 31 300 35 34 300 38 37 300 41 40 300 44 43 300 47 46 Total cost of pipes and water-hammer controllers: US$4,382,170
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