Q3/ One Sprinkler line contains 18 sprinklers .The distance between sprinklers is 12 m. The average discharge for each sprinkler is 2 m3/hr. and average head = 24 m. Find the diameter for the sprinkler line so it would be divided as shown in figure below into three parts. Friction losses will be divided equally in each part.show show to D3 D₁ D2 140 PVC C=150 F = 0.4 brig Q₁ = 36 Q₂ = 24 Q = 12 L₁ = 72m L₂ = 72 m stagini L3 = 72 m dibaw till wel in diesel mast bid toked to L Hf = 1.14 * 10° * 1. 1.852 * * F gini D4.87 gali netos

The figure illustrates a piping system with three tanks. Determine the flow rate of each pipe using the method taught in class. For each pipe the diameters and lengths are in meters. D1 = 1m L1 = 1000mD2 = 0.5m L2 = 900mD3 = 0.75m L3 = 1200mConsider the roughness e = 0.0003 m and kinematic viscosity of 1.31 x 10^-6 m^2/s

2. A large-capacity faucet is to be connected to a water main by 20-mm diameter copper tubing as shown in Figure below. The copper tubing has an estimated f=0.02, and local head losses are created by the corporation stop (C-stop), three bends, and the faucet itself. The faucet exit has a diameter of 12 mm. What is minimum pressure in the water main required to obtain a desired flow rate of 50 L/min when the faucet is fully open? fig1.Faucet connected to water main. Water main Bend 3.5 m C-stop E 2 5m Pipe Bend Bend E Bend 4 m Faucet Fitting C-stop Bend(s) Faucet K 9 1.2 10

Problem 2: Comparing Three Equations for Head Loss Compare three equations for friction head loss in pipes, assuming constant friction factors. Recall the slope of the energy grade line (EGL) is S = he/L. Part A i. Write the Darcy-Weisbach equation for friction head loss, ht=... ii. For iron pipes, what is a typical, midrange value for the friction coefficient, λ? iii. For constant 2, if the discharge is doubled, by what factor does the head loss increase? Part B i. Write the Hazen-Williams equation for friction head loss, ht=... ii. For iron pipes, what is a typical, midrange value for the friction coefficient, CHW? iii. For constant Chw, if the discharge is doubled, by what factor does the head loss increase? Part C i. Write the Manning equation for friction head loss, ht=... ii. For iron pipes, what is a typical, midrange value for Manning's n, with units? iii. For constant n, if the discharge is doubled, by what factor does the head loss increase?

If the flow between the two reservoirs is 3 L/s, calculate the difference in elevation between the water surface. Both pipes are made of stainless steel. Use a value of 1 x 10-6 m²/s for the kinematic viscosity of water. D = 50 mm L = 6 m D = 25 mm L = 6 m 2

A 200 m of rubber cotton lined hose having a diameter of 75 mm is attached to a hydrant at which pressure is 420 kPa during the flow. Assume the hose to be horizontal and f = 0.024 29. At what rate will the water be discharged trough the rubber cotton lined hose 30. If a 25 mm diameter nozzle is attached to the hose, what would be the expected head lost if a pressure of 500 kPa in the hydrant is maintained? Use Cv = C = 0.95 31. What is the discharge may be expected if the 25 mm nozzle is attached to the hose?

Hydrodynamics pumps (WRITTEN COMPLETE SOLUTION AND FIGURES IF NEEDED) 1. A centrifugal pump installation draws water from an open reservoir having a water elevation of 5 m above the pump centerline and delivers the water to another open reservoir 80 m above pump centerline. The rate of discharge is 600 li/min. The suction pipe has a diameter of 200 mm while that of the discharge pipe diameter is 150 mm. The friction loss at the suction is estimated to be 4 times the velocity head at the 200 mm suction pipe. At the discharge, the friction loss is estimated to be 21 times the velocity head at the 150 mm discharge pipe. If the overall mechanical efficiency is 77%, estimate the brake power input to thepump.  a. brake power Answer : ____________________ kW

A pipe connected in series has the following roughness or friction coefficients: Pipe 1 C = 80 (Hazen-Williams) Pipe 2 n = 0.015 (Chezy-Manning) Pipe 3 f = 0.025 (Darcy-Weisbach) All pipes have a diameter of 400mm, length of 1 kilometer, and flow rate of 150 L/s. Determine the headloss on Pipe 1 in meters.