A pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250- mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Q = 0.25 m³/s. Considering f= 0.02 and the coefficients for minor head losses (k entrance = 0.5, k hend = 0.35, and K exit 0.5), compute the power of the pump. = 4.5 m 300 mm dia. 15 m Length 250 mm dia. 75 m Length Kentrance kexit 60 m kbend

In a 225 mm pipeline 0.14 m3/s of water are pumped from a reservoir of surface elevation30 over a hill of elevation 50. A pump of what power is required to maintain a pressure of 345kPa on the hilltop if the head lost between reservoir and hilltop is 6 m?

Water at 20°C is being pumped from tank 1 to tank 2 with given conditions. Calculate the power of pump used in the system. (Both tanks are open to atmosphere). Volume flow rate = 10L/s Pipe material = cast iron

Q.10) Water, is pumped between two reservoir at 0.005 m3/s through a 100 m of 2 in diameter pipe and several minor losses, as shown in figure. The roughness is ε=0.02 mm. Compute the pump head required to maintain the flow. Z1-6 m Sharp Entrance K=0.8 Gate Valve K= 0.2 Standard Elbow K=0.9 Sharp Exit K= 0.5 Gate Valve K= 0.2 Long radius elbow K=0.2 Z2-30 m

0105 Water at 40 °C is pumped from an open tank through 200 m of 50-mm-diameter smooth horizontal pipe as shown in Figure 1 and discharges into the atmosphere with a velocity of 3 m/s. Minor losses are negligible. (a) If the efficiency of the pump is 70%, how much power is being supplied to the pump? (b) What is the NPSHA at the pump inlet? Neglect losses in the short section of pipe connecting the pump to the tank. Assume standard atmospheric pressure. Note: for smooth pipe, friction factor, f = 0.0152 and at 40 °C. kinematic viscosity Temperature (°C) Water vapor pressure (N/m²) Specific weight (N/m³) (m²/s) 6.58 x 10-7 40 7.376 x 10³ 9.731 x 10³ T 3 m ! PUMP 9.731* Diameter = 50 mm Length 200 m e Figure 1

Water is pumped between two reservoirs in a pipeline with the following characteristics; (d= 300mm, L= 70m, /= 0.025, minor loss coefficient: YK=2.5). The pump performance curve is approximated by the equation: H,=22.9-650° Where H, is in meters and Q is in m's. Determine the discharge Q and pump head A when two pumps in series are used for total static head (4Z=25m).

The diameters Dº & dº piped, Venturi- meter like horizontal water flow sistem seen in the drawing is connected to a piston - cylinder system of DPⓇ piston and dp rod diameter and connected to the incoming flow pipe and the cont- racted cross section. Assuming that the ideal - no head loss flow conditions are valid ; Calculate the force F applied to the pis- ton when the average velocity and the pressure at the entrance cross-section is V and p' respectively. Dº = 10 [mm] dº = 5 [mm] " & D dp p* V -FD₂ p = 4,5 [bar] Dp = 30 [mm] dº Pw Horizontal Setup V = 5 [m/s] dp = 6 [mm]

please explain how to get the friction factor

A water pump is used to pump the water to a large water tank as shown in Figure. The free surfaces of both water tanks are under atmospheric pressure. Dimensions and local losses are given below. The flow rate of the pump is determined as 16.2  L/min. Calculate the required manometric head of the pump and the required motor power if the total efficiency is 76.2 percent. The water at 10oC. density r = 996.2 kg/m3, dynamic viscosity µ = 1.362x10-3kg /ms. z2-z1 = 7.62 m (height difference), D = 2.62 cm (pipe diameter), L = 176.2 m (total pipe length), ɛ = 0.2562 mm (pipe roughness value) Local loss coefficients: KL,inlet = 0.562 (pipe inlet) KL,valve = 16.2 (valve), KL,elbow = 0.9262 (there are 5 elbows totally in pipe line), KL,outlet = 1.0562 (pipe outlet).

How high will the exit water rise?