Previous Exercice "There is a 32" pump that is used to pump 24,000 gpm of water at 1170 rpm from a tank whose free surface is at a pressure of 14.7 lbf/in 2 . if the head loss from reservoir to pump inlet is 6 ft."

You want to use the same pump from the previous exercise at 1170 rpm to pump water at 60F from one tank to another, 120 ft higher through a 1500 ft pipe long and 16" internal diameter, with a coefficient of friction of 0.03.

A. What will be the operating point and efficiency? b. At what speed must the pump be changed to work on the PME (BEP)? c. If two 32" pumps were placed in parallel to this system to would increase the flow rate be more efficient? d. Suppose the elevation is changed from 120 to 500 feet, would it be feasible to use 32 pumps in series at 1170 rpm?

\begin{tabular}{|c|c|c|c|} \hline Caudal(gpm*1000) & Cabeza (pie) & NPSH (pie) & Eficiencia (\%) \\ \hline 0 & 500 & & \\ \hline 8 & 475 & & 58 \\ \hline 12 & 450 & & 74 \\ \hline 16 & 425 & 25 & 83 \\ \hline 20 & 375 & 30 & 86 \\ \hline 24 & 330 & 35 & 85 \\ \hline 26 & 300 & 50 & 82 \\ \hline \end{tabular}