A pump is to deliver water at a rate of 1.4 m/ s from a sump to reservoir which is 10 km away through a steel pipe 1200 mm in diameter for a length of 5 km and the remaining through a PSC pipe of diameter 1000 mm. The elevation difference between the full tank level of the Weisbach friction factor (f) of 0.018 for steel pipe and 0.02 for PSC pipe with a pump delivery reservoir and the low water levei of the sump is 50 m. What is the Break Horse Power (in kW) requirement of the motor? Assume the pump house loss of 3.75 m and minor losses to be 10% of the friction losses. Use Darcy- efficiency of 80%.

A pump is to deliver water at a rate of 1.4 m/ s from a sump to reservoir which is 10 km away through a steel pipe 1200 mm in diameter for a length of 5 km and the remaining through a PSC pipe of diameter 1000 mm. The elevation difference between the full tank level of the Weisbach friction factor (f) of 0.018 for steel pipe and 0.02 for PSC pipe with a pump delivery reservoir and the low water levei of the sump is 50 m. What is the Break Horse Power (in kW) requirement of the motor? Assume the pump house loss of 3.75 m and minor losses to be 10% of the friction losses. Use Darcy- efficiency of 80%.

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

See similar textbooks

Similar questions

Suppose the pump of Fig. P14–23 is operating atfree delivery conditions. The pipe, both upstream and downstreamof the pump, has an inner diameter of 2.0 cm andnearly zero roughness. The minor loss coefficient associatedwith the sharp inlet is 0.50, each valve has a minor loss coefficientof 2.4, and each of the three elbows has a minor losscoefficient of 0.90. The contraction at the exit reduces thediameter by a factor of 0.60 (60% of the pipe diameter), andthe minor loss coefficient of the contraction is 0.15. Note thatthis minor loss coefficient is based on the average exit velocity,not the average velocity through the pipe itself. The total length of pipe is 6.7 m, and the elevation difference is (z1 - z2)= 4.6 m. Estimate the volume flow rate through this pipingsystem. Complete Answer, Thank you
Toluene at 35 degrees Celsius is pumped from an open reservoir to a tank kept at a gauge pressure of 150 kPa. The pump itself is 3m below the reservoir, while the discharge tank is 10m above the reservoir. Assuming friction in the suction line is negligible, while in the discharge line the friction head amounts to 7.5 m, determine the net positive suction head available for the pump. If the pump has an efficiency of 65%, determine the total power input. At the given temperature, the density and vapor pressure of toluene are 862 kg/m3 and 40 mmHg
A pump is being used to transport a liquid food product (ρ = 1250 kg/m3, μ = 1.5 cP) from a holding tank to a filling machine at mass flow rate of 2.5 kg/s. The liquid level in the holding tank is 10 m above the pump, and the filling machine is 5 m above the pump. There is 100 m of 2-in nominal diameter sanitary pipeline between the holding tank and the filling machine, with open globe valve and three regular 900 flanged elbows in the system. The product is being pumped through a heat exchanger with 120 kPa of pressure drop due to friction before filling. Complete the process diagram and determine the actual power requirement if the efficiency of the pump and the motor are 85 % and 80%, respectively.
Water at 16,2°C is to be discharged from a reservoir at a rate of 16,2 L/s using two horizontal cast iron (roughness value ɛ=0.00026m) pipes connected in series and a pump between them. The first pipe is 26,2 m long and has a 66,2 mm diameter, while the second pipe is 36,2 m long and has a 46,2 mm diameter. The water level in the reservoir is 30 m above the centerline of the pipe. The pipe entrance is sharp-edged (KL=0.562), and losses associated with the connection of the pump are negligible. Neglecting the effect of the kinetic energy correction factor, determine the required pumping head, the minimum pumping power and electric motor power for total efficiency value of 76,2% to maintain the indicated flow rate. Water density is r=996,2 kg/m3, dynamic viscosity µ= 1.162x10-3kg/ms. Solve the problem by making the necessary assumptions and drawing the schematic figure.
A centrifugal pump is pumping water at the design conditions with a flowrate of 2300 gpm and a tangential velocity of U2=65ft/s. The flow passage area at the outlet is A2=1ft2. About 5% of the flow is recirculated internally and pumped again. The actual head rise of the pump is 94ft and the blade angle at outlet is 28º. Knowing that the total number of blades is Zb=24, the power needed to operate the pump is Ps=65hp. Take g = 9.81 m/s2 = 32.2 ft/s2 & ρw = 998 kg/m3 =1.94 Slug/ft3. Estimate the theoretical head of the pump in ft using Stodola’s formula (Hi). Determine the mechanical efficiency of the pump (ηm).
A water source with an elevation of 12 m is to be pumped by a centrifugal pump to an open reservoir at an elevation of 100 m. The suction pipe and discharge pipe diameter is 250mm and 200 mm, respectively. The pump centreline is at 5m. The head loss at suction pipe is 0.05m and 0.45 at the discharge pipe. The pump delivers water at 15 L/s and has an efficiency of 75% while the electric motor is 80%. Determine: a. Water horsepower of the pump b. Brake horsepower of the pump c. Power input to drive the motor, in kW d. The pressure gage readings installed before and after the suction and discharge of the pump, kPa.
Q:/ Discuss the relation betwveen the head pressure and flow rate for the benefits of connecting the pumps in parallel ?
Water at 50oF ( γ = 62.4 lbf/ft3 ; pv = 0.1733 psia) is to pump between open reservoir A and B whose surfaces are at elevations 5910 ft and 6060 ft, respectively (patm = 11.8 psia). The water is to be delivered at 20 cfs through a 24-in diameter pipe of length 2000 ft. Assume pipe friction factor f = 0.03. (a) Find the specific speed of the most suitable pump if the speed of operation is to 600 rpm. (b) If this pump is installed 10 ft above the water surface of reservoir A with suction pipe total length 300 ft will it be safe against cavitation? (c) What maximum elevation above water surface of reservoir A the pump can be installed without pump cavition? Pump NPSHR is 8 ft.
A Francis turbine is to be designed to produce 27 MW at a shaft speed of 90rev/minunder an effective head of 27.8 m. Assuming that the optimum hydraulic efficiency is 90percent and the runner tip speed to jet speed ratio is 0.75, determine:(1) the power specific speed;(2) the volume flow rate;(3) the impeller diameter and blade tip speed.
A hydraulic ram pump lifts 0.005 m3/s of water to a tank 20 m above the ram through a 80 m long and 6.5 cm diameter delivery pipe. Take Darcy friction coefficient ƒ = 0.01 and neglect frictional loss in the supply pipe. If the supply tank is 3 m above the ram and supplies 0.1 m3/s of water; A) Calculate Aubuisson’s efficiency, in %, of the ram pump. B) Calculate the Rankine efficiency, in %, of the ram pump.
a pumping station working with a pump head of 25m. the output power of the motor for that pump is 16kw. identify the pump efficiency if the sewarge discharge velocity is 0.27 m/s and the pipe diameter is 250 mm
You are asked to calculate a rotadynamic pump with a total manometric head of 11 mss and demand flow of 19 in lt / s, which will meet the daily water need of a facility, and which can rotate at 1450 rpm for its drive, using a three-phase electric motor. Since the density of the water to be transported is 1000 kg / m3; a) Calculate the pump organs.