4.2.11. A pump is needed to convey 8 cfs of water at 68°F through a 130-ft-long horizontal, ductile iron pipeline to a pressurized tank. The pump and pipeline are installed at an elevation of 10 ft, the water surface elevation in the receiving tank is 20 ft, and the pressure at the top of the tank is 32.3 psi. The pipe has a 15-in.-diameter on the suction side of the pump and a 12-in.-diameter on the discharge side of the pump. If the pump delivers 111 ft of head, determine the pressure head on the discharge side of the pump (in psi) and whether cavitation is a concern on the suction side of the pump? Sketch the system and draw the HGL and EGL.

A pump is used to draw water from an open reservoir to an open tank on thetop of a building. The discharge flow rate is 50 lps. The static suction head of the pump is6 m and the static discharge head is 20 m. The cast iron, schedule 40, pipe in the suctionline is 4 inches nominal diameter and 20 m long. The cast iron, schedule 40, pipe in thedischarge line is 6 inches nominal diameter and 65 m long. The fittings and valvesinstalled in the suction line are the following: two 90o standard elbow and one gate valve.For the discharge line, are the following: one check valve, one gate valve, and three 90ostandard elbows. Assuming a water viscosity of 0.001002 Pa-s, and a pump efficiency of82 %. Determine: a) the total dynamic head b) the pump brake power. Show the neat schematic diagram of pumping system. Note: Use Moody’s equation for the value of friction factor; and table for determining the equivalent length of the components.

A flocculator is 16 ft (4.88 m) deep, 40 ft (12.2 m) wide, and 80 ft (24.4 m) long. The flow of the water plant is 13 mgd (20 cfs, 0.566 m³/s). Rotating paddles are supported parallel to four horizontal shafts. The rotating speed is 2 rpm. The centre line of the paddles is 5.5 ft (1.68 m) from the shaft (mid-depth of the basin). Each shaft equipped with six paddles. Each paddle blade is 10 in (25 cm) wide and 38 ft (11.6m) long. Assume the mean velocity of the water is 28 percent of the velocity of the paddles and their drag coefficient is 1.9. Estimate: (a) the difference in velocity between the paddles and water (b) the useful power input (c) the energy consumption per million gallons (Mgal) (d) the detention time (e) the value of G and Gr at 60 °F (f) the loading rate of the flocculator

A pump draws water from a sump through a vertical 6" pipe. The pump has a horizontal discharge pipe 4" in diameter that is 10.6 ft above the water level in the sump. While pumping 1.25 cfs, gases near the pump at the entrance and discharge read -4.6 psi and +25.6 psi, respectively. The discharge gage is 3.0 ft above the suction gage. Compute the horsepower output of the pump and the head lost in the 6" suction pipe.Answer: 10.7 hp, 2.4 ft

A reservoir is fitted with a pump discharging into the open air at point B. The pressure at section A is considered to be under a vacuum of 10 inHg ad the discharge rate is given at 3 ft/sec. Determine the total head for this system with the datum elevation at the base of the reservoir. 10-in-diameter 8-in-diameter suction pipe discharge pipe 40 ft Pump 15 ft 25 ft O 81.15 ft O 92.45 ft O 71.33 ft O 120.71 ft

Determine the available NPSH for the system shown in Fig. 13.38 (b). The fluid is water at 80°C and the atmospheric pressure is 101.8 kPa. The water level in the tank is 2.0 m below the pump inlet. The vertical leg of the suction line is a DN 80 Schedule 40 steel pipe, whereas the horizontal leg is a DN 50 Schedule 40 pipe, 1.5 m long. The elbow is of the long-radius type. Neglect the loss in the reducer. The foot valve and strainer are of the hingeddisk type. The flow rate is 300 L/min.

2) A pump is used to draw water from an open reservoir to an open tank on the top of a building. The discharge flow rate is 50 lps. The static suction head of the pump is 6 m and the static discharge head is 20 m. The cast iron, schedule 40, pipe in the suction line is 4 inches nominal diameter and 20 m long. The cast iron, schedule 40, pipe in the discharge line is 6 inches nominal diameter and 65 m long. The fittings and valves installed in the suction line are the following: two 90o standard elbow and one gate valve. For the discharge line, are the following: one check valve, one gate valve, and three 90o standard elbows. Assuming a water viscosity of 0.001002 Pa-s, and a pump efficiency of 82%. Determine a) the total dynamic head b) the pump brake power. Show the neat schematic diagram of pumping system. Note: Use Moody’s equation for the value of friction factor; and table for determining the equivalent length of the components.

8-42E Water at 60°F passes through 0.75-in-internal- diameter copper tubes at a rate of 1.2 lbm/s. Determine the pumping power per ft of pipe length required to maintain this flow at the specified rate.

pls answer asap for my hydraulics course. A 30 cm diameter pipe is connected by a reducer to a 10 cm diameter pipe. Points 1 (on the 30 cm diam.) and 2 (on the 10 cm diam.) are along the same elevation. The pressure at 1 is 250 kPa. The flow is 30 liters per second and the energy lost between 1 and 2 is equivalent to 20 kPa. Compute the pressure at 2 if the liquid flowing has a specific gravity of 1.50.

(CLO-2). Q2. An intake tower located in a cold climate reservoir is being designed for a winter design flow rate of 18,000 m/day. The tower will have 6 ports at three different elevations in each cell. All the ports combined must carry the total required discharge. There is a bar rack on each port with a bar diameter of 2 cm with a clear opening of 4 cm between two bars. Determine the area of each port opening. Describe what will happen if three of the ports get blocked at the same instant, what measures can you take to handle the situation and keep the intake structure operational. (CLO-2)