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0.2 0.3 0.4 0.5 Discharge (m3/a)

FIGURE 4.10 Use of pump and system head-discharge characteristics curves for sizing pumping stations. (From Peavy, H. S., D. R. Rowe, and G. Tchobanoglous (1985). Environmental Engineering. McGraw-Hill, New York, 395. With permission.)

FIGURE 4.10 Use of pump and system head-discharge characteristics curves for sizing pumping stations. (From Peavy, H. S., D. R. Rowe, and G. Tchobanoglous (1985). Environmental Engineering. McGraw-Hill, New York, 395. With permission.)

inside the pumping station, itself. For the purpose of system head calculations, it is convenient to disregard the head losses of the pumping station piping and the suction piping. The disregarded pumping station and suction piping losses are designated as station losses and applied as corrections to the pump head-discharge curve supplied by the manufacturer. This correction produces the effective pump head-discharge curve. The discharge piping losses is also corrected by those portions of this loss assigned to the pumping station losses.

An illustration of sizing pumping stations is shown in Figure 4.10 and in the next example.

Example 4.8 Calculations for the system characteristic curve yield the following results:

Q

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