A centrifugal pump is to be used to pump water from a lake to a storage...

A centrifugal pump is to be used to pump water from a lake to a storage tank which is 165 feet above the surface of the lake. The pumping rate is to be 10 - 35 gal/min at a water temperature of 43°F. The water is used for drinking but will have to undergo filtration and chlorine treatment because there is sediment in the lake. The pump on hand can develop a discharge pressure of 60.0 psig pumping at a rate of 40.0 gal/min through a 2 inch schedule 40 pipe. a) How much power does the pump develop? b) Is it sufficient for the task? Why or why not? c) Is the pipe chosen thick enough?

Expert Solution

Amanda K answered 6 months ago

A centrifugal pump delivers water at rate of 0.22 m3/s from a reservoir at a ground...

A centrifugal pump delivers water at rate of 0.22 m3/s from a reservoir at a ground level to another reservoir to height 'h' through a vertical pipe of 0.2 m diameter. Both are open to atmosphere. Power input to pump is 90 kW and it operates with 75% efficiency . f=0.004 use g=9.8 m/s2 density=1000kg/m3. Find 'h'.

A small water pump is used for an irrigation project. The pump takes water in from...

A small water pump is used for an irrigation project. The pump takes water in from a river at 10oC, 100 kPa at a mass flow rate of 16.83 kg/s. The exit line enters a pipe that goes up to an elevation 26.15 mm above the pump and river, where the water runs into an open channel. Assume the process is adiabatic and that the water stays at 10 oC. Find the required pump work.

A pump storage facility takes water from a river at night when demand is low and...

A pump storage facility takes water from a river at night when demand is low and pumps it to a hilltop reservoir 500 ft above the river. The water is returned through turbines in the daytime to help meet peak demand. (a) For a single 30-inch pipe, 2,500 ft long and carrying 20,000 gaVmin, what pumping power is needed if the pump efficiency is 85 percent? The friction loss is estimated to be 15 ft of water. (b) How much...

1. A centrifugal water pump impeller is given an inlet and exit radius of 400 mm...

1. A centrifugal water pump impeller is given an inlet and exit radius of 400 mm and 1200 mm, and an inlet and exit blade thickness of 120 mm and 80 mm. The entering and exiting blade angles are 40o and 60o respectively. If the pump rotational speed is 575 rpm with and efficiency of 85%, determine: a) Ideal head (m) b) Fluid power for max pressure (kW) c) Shaft torque for max pressure (Nm) solutions a) 488 m b)...

A centrifugal pump lifts water against a head of 36m, the manometric efficiency being 80%. The...

A centrifugal pump lifts water against a head of 36m, the manometric efficiency being 80%. The suction and delivery pipes are both 150mm bore, the impeller is of 375mm and 25mm wide at the outlet; its exit blade angle is 250 and the specific rotational speed is 1320 rev/min. If the total loss by friction in the pipeline at this speed is estimated at 9m, calculate the probable rate of discharge at this speed.

When a centrifugal pump runs at 1500 rpm, it discharges 0.05 m3 / h of water....

When a centrifugal pump runs at 1500 rpm, it discharges 0.05 m3 / h of water. The entrance and exit radii of the rotor are given as 0.05 m and 0.15 m respectively, the wing thickness at the entrance is 0.03 m, and the wing thickness at the exit is 0.01 m. The inlet and outlet vane angles are 60o and 45o respectively, and the pump mechanical efficiency is 0.85. In this case; a) What should be the theoretical head...

2. A pump delivers 30o C water from a supply reservoir to an elevated storage tank...

2. A pump delivers 30o C water from a supply reservoir to an elevated storage tank at a discharge rate of 120 litres/sec. At this discharge the manufacturer’s data indicates the net positive suction head (NPSH) for the pump is 6.0 m. The water surface elevation difference between the reservoir and the tank is 45.0 m. The total length of pipe between the two is 150.0 m, 10.0 m of which is located on the suction side of the pump....

Consider a centrifugal water pump whose geometry and flow conditions are as follows: Impeller outlet radius...

Consider a centrifugal water pump whose geometry and flow conditions are as follows: Impeller outlet radius – 2.5 cm, impeller inlet radius – 1.8 cm, impeller outlet width – 1 cm, design speed – 1800 rpm, Design flow rate120 liters/min, Backward-curved vanes (outlet blade angles) – 60 deg. Assuming 100% efficiency, find: a) the total head, b) absolute and relative discharge velocities, c) theoretical power required at design flow rate and d) the theoretical pump curve

The following design and operating data were taken for a large industrial centrifugal water pump: Parameter...

The following design and operating data were taken for a large industrial centrifugal water pump: Parameter Design Operating Flow Q (m^3/h) 800 550 Head H (m) 55 24 (after delivery valve) Power P (kW) 160 124 RPM 1485 1485 Required water flow rate varies from 500 m3/h to 700 m3/h. For the pump to deliver 550 m3/h, the flowrate has been reduced by partially closing the delivery valve. Motor efficiency is 93%. a. Calculate the pump operating efficiency (the ratio...

A sump pump (used to drain water from the basement of houses built below the water...

A sump pump (used to drain water from the basement of houses built below the water table) is draining a flooded basement at the rate of 0.55 L/s, with an output pressure of 2.95 × 105 N/m2. A. The water enters a hose with a 2.8 cm inside diameter and rises 2.2 m above the pump. What is its pressure at this point N/m2? You may neglect frictional losses. B. The hose goes over the foundation wall, losing 0.65 m...

Question