Open Channel Flow - Uniform Flow A penstock of 1 m diameter and 5 km length is used to supply water from a reservoir to an impulse turbine. A nozzle of 15 cm diameter is fixed at the end of the penstock. The elevation difference between the turbine and water level in the reservoir is 500 m. consider the head loss due to friction as 5% of the velocity head available at the jet. Assume unit weight of water = 10 kN/m³ and acceleration due to gravity (g) = 10 m/s². If the overall efficiency is 80%, power generated (expressed in kW and rounded to nearest integer) is

Open Channel Flow - Uniform Flow A penstock of 1 m diameter and 5 km length is used to supply water from a reservoir to an impulse turbine. A nozzle of 15 cm diameter is fixed at the end of the penstock. The elevation difference between the turbine and water level in the reservoir is 500 m. consider the head loss due to friction as 5% of the velocity head available at the jet. Assume unit weight of water = 10 kN/m³ and acceleration due to gravity (g) = 10 m/s². If the overall efficiency is 80%, power generated (expressed in kW and rounded to nearest integer) is

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A centrifugal pump which runs at 104.3 rad ·s−1 (16.6 rev/s) is mounted so that its centre is 2.4 m above the water level in the suction sump. It delivers water to a point 19 m above its centre. For a flow rate of Q (m3 ·s−1) the friction loss in the suction pipe is 68Q2 m and that in the delivery pipe is 650Q2 m. The impeller of the pump is 350 mm diameter and the width of the blade passages at outlet is 18 mm. The blades themselves occupy 5% of the circumference and are backward-facing at 35◦ to the tangent. At inlet the flow is radial and the radial component of velocity remains unchanged through the impeller. Assuming that 50% of the velocity head of the water leaving the impeller is converted to pressure head in the volute, and that friction and other losses in the pump, the velocity heads in the suction and delivery pipes, and whirl slip are all negligible, calculate the rate of flow in liter/s and the manometric efficiency of the pump.
Water flows from Reservoir A (Elev 125 m.) to a turbine (Elev 67 m.) then discharges into tailtrace B (Elev 26 m.) as shown. The head loss from (A) to (1) is 2 times the velocity head in the pipe, and the head loss from (2) to (b) is 1.97 times the velocity head in the pipe. If the flow rate in the pipe is 39 ft3/s, diameter of all pipes is 30 in, calculate the horsepower generated by the turbine. Use 1 hp = 550 lb-ft/s. ANS : 1,000,000
Water is pumped from reservoir A through 1850 m pipeline 600 mm across a valley to a second reservoir C. the water surface elevation of reservoir A is at elevation 61 m and that of C is at elevation 91m. If during pumping, the pressure at B which is located midway of the 600 mm pipe and at elevation 30 is 100 kPa. Compute the flow rate and the horsepower exerted by the pump if f = 0.02.
Water from a deep reservoir is collected with help from a pump. The discharge at B measures at 0.94 ft3/s. If the flow within the 5.0in diameter pipe incurs a head loss of 5.1ft, what is the power (hp) produced by the pump?Point B is 7.7 ft above point C (surface of the deep reservoir).
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water from reservoir is pumped over a hill through a pipe 90cm in diameter and a pressure of 200kpa is maintained at the summit where the pipe is 90 m above the reservoir. the quantity pumped is 1.40m/s and by reason of friction there is a head loss of 3 J/N between reservoir and summit. if the pump is 90% efficient, determine the input power of the pump
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90.Water is pumped from the reservoir with a surface elevation of 200 m across the valley to another reservoir of surface elevation 216 m through a pipe line of 1300 m long and 30 cm diameter if during pumping the pressure is 5.6 kg/cm2 at a point half way along the pipe and at an elevation of 168 m. Compute the discharge and power of the pump taking friction factor as 0.02 neglect minor losses.
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