Info

Therefore, outlet manometric head = 57.31 - 10.34 = 46.97 m of water. Ans

1.0592

(c) idh = habsi + hvi = (-3.087 + 10.34) + 1;"59l - = 7.31 m of water Ans

1.32

TDH = odh - idh = 57.39 - 7.31 = 50.086 m of water Ans

4.3 pump characteristics and best operating efficiency

It is important that a method be developed to enable the proper selection of pumps to meet specific pumping requirements. Thus, before selecting any particular pump, the designer must consult the characteristics of this pump in order to make an intelligent selection. In fact, manufacturers develop these characteristics for their particular pump. Thus, pump characteristics are a set of curves that depict the datum

Pressure gage Throttle or valve

Pressure gage Throttle or valve datum

Pump

Flow meter

FIGURE 4.7 Setup for developing pump characteristics curves.

datum.

Pump

Flow meter

FIGURE 4.7 Setup for developing pump characteristics curves.

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