A turbine system is harnessing the energy of flowing water from reservoir 1 to reservoir 2. The difference inelevation between the two reservoirs is 120ft. For a design flowrate of 50ft^3/s, the head loss is 60ft. Solve thetheoretical power extracted by the turbine. Neglect the difference in atmospheric pressure between thereservoirs.1022hp817hpO 490hp341hp

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Answered: A turbine system is harnessing the…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Water from a reservoir is pumped over a hill through a pipe 3 ft. in diameter, and a pressure of 35 psi is maintained at the summit, where the pipe is 300 ft above the reservoir. The quantity pumped is 55 cfs, and by reason of friction in the pump pipe there is 10 ft of head loss between the reservoir and the summit. What amount of energy must be furnished the water by the pump in kilowatts?
A certain hydropower plant is being supplied by river flow of 900 cubic ft/sec and the head on the site is 200 ft. To develop maximum capacity it was proposed to install 2 turbines, one of which is 1.5 times the capacity of the other. Both turbine units are assumed to have efficiency of 85%. Determine (a) the total power developed, (b) what is the power developed by turbine #1 and by turbine #2 and (c) Rotative speed of each turbine unit assuming specific speed equal to 70 rpm.
Water is pumped from a lake to a reservoir at 0.021 m^3/s. The pump has a horsepower of 13 and an efficiency of 40%. There is a 12 foot elevation from the lake to the reservoir. Determine the mechanical power needed to pump the water up the reservoir in W.
In a large pumped hydro plant, the head from the turbine to the lake surface is 100m. During a period of 8 hours of excess electricity in the grid the pumped hydro plant pumps water back into the top reservoir. If the combined efficiency of the pump is 70% and the plant has a capacity of 50 MW how much water is pumped back up to the top reservoir? Assume the head remains constant during pumping. A. 0.5 x 10 – 1.0 x 10 m B. 1.1 x 10 – 1.5 x 10° m C. 1.6 x 105 - 2.0 x 10 m D. 2.1 x 10° - 2.5 x 10 m3
What is the minimum power required from the pump to deliver the oil from Reservoir A to Reservoir B as shown in Figure 2 at a rate of 0.30m³/s? The pump has a 70% efficiency rating. V Reservoir A -Oil v= 10-5 m²/s p=950kg/m³ Elevation 135m Steel Pipe, ks =0.046mm, L= 200m, D=250mm Elevation 120m r/D=0.1 Pump Figure 2 r/d=1 Reservoir B abrupt Globe valve, wide open Air at 200kPa Elevation 110m Elevation 100m
A pump is to deliver 80 GPM of water at a density of 61. 831b/ft cubed with a discharge pressure of 150 psig. Suction pressure indicates a 2 HG vacuum. The diameter of the suction and the discharge are 5 in. and 4 in. respectively. The pump has an efficiency of 70% while the motor efficiency is 80%. Determine the (a) water horsepower of the pump (b) bhp of pump motor (c) power input to drive the motor.
A fan can deliver a total pressure of 474 mm of water gage. The boiler requirement is 90,667 m^3/hr of standard air and the mechanical efficiency is 8 %. Use the total head in terms of air. Determine the size of the driving motor in kW
Referring to the image of the dam, assume that the resulting flow through the pipe is 1000 ft/min and that the head loss in the pipe is 5 ft. (a) What is the drop in the head at the turbine? (b) 550 ft-lb/s. (a) What is the power consumed by the turbine? Keep in mind that 1 hp: (c) supplied to the system? To convert to relevant units, use 1 hp = 746 W. (b) If the efficiency of the turbine is 60%, what is the resulting power
A liquid (SG = 0.920) is being pumped from a reservoir as shown. The pressures at points 1 and 2 are -8 psi and 44 psi, respectively. The rate of flow in the pipe is 0.714 ft3/s. Neglect energy (friction) losses in the system. Use x = 4 ft., y = 7 ft. Use 1 hp = 550 lb-ft/s. Efficiency of the pump is 91%. What is the input power of the pump, in hp? Round off to two decimal places.
60 degree F water flows through a horizontal turbine. The water speeds at the turbine inlet and the turbine outlet are identical. The water gage pressure at the turbine inlet is 46.4 psi while that at the outlet is 12.2 psi. Assume water frictional losses through the turbine are negligible. Deterimine the shaft work rate in ft*lb per slug of water passing through the turbine. Answer with a positive number if mechanical energy goes into the water and a negative number if mechanical energy comes out of the water as it passes through the turbine.
The discharge of water in the given pump is given as 0.030 cubic meters per seconds. Use ywater = 9.79 KN/m° and Pinput = 27.34 hp. Determine the following parameters, if losses and elevation changes is to be neglected. 0.409 MPa 0.125 MPa a. The energy added in meters and the power delivered in kilowatts to the water by the pump. b. The mechanical efficiency of the pump. P 0.04meter Ø 0.1meter Ø

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