(Solved): Q2: The 11.25-in impeller option of the Taco Model \( 4013 \mathrm{FI} \) Series centrifugal pump ...

Q2: The 11.25-in impeller option of the Taco Model \( 4013 \mathrm{FI} \) Series centrifugal pump of the attached figure is used to pump water at \( 25^{\circ} \mathrm{C} \) from a reservoir whose surface is \( 4.0 \mathrm{ft} \) above the centerline of the pump inlet (see figure). The piping system from the reservoir to the pump consists of \( 10.5 \mathrm{ft} \) of cast iron pipe with an ID of \( 4.0 \) in and an average inner roughness height of \( 0.02 \) in. There are several minor losses: a sharp-edged inlet \( \left(\mathrm{K}_{\mathrm{L}}=0.5\right) \), three flanged smooth \( 90^{\circ} \) regular elbows ( \( K_{L}=0.3 \) each), and a fully open flanged globe valve \( \left(K_{L}=6.0\right) \). Calculate the available net position suction head. Properties For water at \( \mathrm{T}=25^{\circ} \mathrm{C}, \rho=997.0 \mathrm{~kg} / \mathrm{m}^{3}, \mu=8.91 \times 10^{4} \mathrm{~kg} / \mathrm{m} \cdot \mathrm{s} \), and \( \mathrm{P}_{\mathrm{v}}=3.169 \mathrm{kPa} \). Standard atmospheric pressure is \( \mathrm{P}_{\mathrm{atm}}=101.3 \mathrm{kPa} \).