Determine the operating conditions (HP, Q, ep, and Pi) of a pump capable of moving water (68°F) from reservoir A (water surface elevation = 102 ft) to reservoir B (water surface elevation = 180 ft). The 12” diameter pipe connecting the two reservoirs has a length of 8700 ft. The pump characteristics are given in the graph; plot the system curve on this graph and include with your solution. To calculate friction loss, assume fully turbulent conditions with e = 0.006 ft, and include minor losses for a square-edged entrance and submerged exit. Also verify that the pump efficiency obtained from the pump characteristic curves corresponds with the pump efficiency obtained from the power equation (? =????; note that 1 HP = 550 ft-lb/s).
Operating conditions
Determine the operating conditions (HP, Q, ep, and Pi) of a pump capable of moving water (68°F)
from reservoir A (water surface elevation = 102 ft) to reservoir B (water surface elevation = 180 ft).
The 12” diameter pipe connecting the two reservoirs has a length of 8700 ft.
The pump characteristics are given in the graph; plot the system curve on this graph and include with your solution.
To calculate friction loss, assume fully turbulent conditions with e = 0.006 ft, and include minor losses
for a square-edged entrance and submerged exit.
Also verify that the pump efficiency obtained from the pump characteristic curves corresponds with the pump efficiency obtained from the power equation (? =????; note that 1 HP = 550 ft-lb/s). Then repeat the calculations for 50 years from now when e has increased to 0.04 ft. Plot the new system curve on the graph and verify the new
efficiency.
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