EB, Pump System. Water is extracted from a reservoir, pumped up and over an obstruction, and discharged at atmospheric pressure at a height of 2m above the reservoir level after passing thru a ½ closed gate value. The piping shown is made of commercial steel of total length 20m and has a constant pipe area A = 0.05m². If the flow rate is 0.5 m³/s, and the pump efficiency n=0.8, (a) compute the required input pump power (kW); (b) what is AP across the pump and across the exit valve? The pipe inlet is a reentrant configuration, and the elbows are flanged. Label your CV inlet-exit points clearly and list and tabulate the losses for each component clearly. Note: n = (power delivered to fluid)/(power input to pump). Ans OM: (a)~10² kW; (b) APpump~10² kPa; APvalve~ -10² kPa € 2m 10m ME

Two identical pumps are connected in series and deliver water through an 45cmdiameter, 2.2km long, commercial steel pipe from reservoir A (surface elevation = 50m) to reservoir B(surface elevation = 100m). Consider minor losses of a square-edged inlet, exit, and swing-type checkvalve. Determine the discharge, the total head added by the pumps, and the total power output. The pumpcharacteristics for a single pump is tabulated below. Assume that the kinematic viscosity is 1x10-6 m 2/s and a specific weight of 9.79kN/m 3 . Plot the system and pump characteristic curves on a single plot. Besure to label the axes appropriately (i.e., include units). Be sure to include a legend to demark the systemhead curve and the pump characteristic curve.

PROBLEM 5: In Lake Geneva (Switzerland), there is a water jet (called the Jet d’Eau) that is discharged 130 m straight upward (measured from the surface of the lake). The exit of the discharge pipe is 20 cm in diameter.

A pump delivering water at a temperature of 400 F (204.4 C) and a rate of 12,000 GPM (757 lit/s) to a pressurized vessel at 1000 psia. The discharge piping is 135 ft (41.15 m) long schedule 40 stainless steel, and nominal pipe size of 20 in (7.874 cm). Find the total dynamic discharge head.

PROBLEM 3 Water, p = 1000 kg/m³ and μ = 0.001 kg/m.s, is pumped between two reservoirs at 5 liter/s through 125 m of 5 cm-diameter pipe and several minor losses, as shown in Fig. The roughness ratio is e/d= 0.001. Compute the pump horsepower required. 2₂= 40m Screwed regular 90° elbow Sharp exit Ģ2 1 2₁ = 7m GI Sharp entrance Half-open gate valve Open globe valve 30 cm bend radius 125m of pipe, d= 5 cm Pump