Refer to the centrifugal pump operating curve with two system head loss curves (see figure below).
The curves apply to a closed cooling water system using one single-speed centrifugal pump discharging through a typical flow control valve.
The system curves are shown for two flow control valve positions–25 percent open and 100 percent open.
The pump is currently operating with the flow control valve 25 percent open, resulting in a pump flow rate of 800 gpm.
If the flow control valve is subsequently fully opened, pump flow rate through the valve will be approximately…
A. 400 gpm.
B. 1,200 gpm.
C. 1,600 gpm.
D. 3,200 gpm.
Show Answer
Answer: B
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