۲/۱A pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoirin which the water surface is 4.5 m higher than the pump and discharges through a 250-mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 mhigher than the pump. Q = 0.25 m³/s. Considering f= 0.02 and the coefficients for minorhead losses (k entrance = 0.5, k hend 0.35, and K exit -0.5), compute the power of the pump.4.5 m300 mm dia.15 m Length250 mm dia.75 m Lengthkentrancekexit60 mkbendosther

The velocity (v) in a pipe can be calculated using the formula:v = Q / Awhere Q is the flow rate and…

Answered: ۲/۱ A pump draws water through a 300-mm…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Problem: A pump draws water through a 300-mm diameter cast iron pipe, 15 m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250-mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Considering f = 0.02 and the coefficients for minor head losses (kentrance = 0.5, kpend = 0.35, and kexit = 0.5), compute the following: a. Pressure head at the suction side of the pump b. Pressure head at the discharge side of the pump c. Horsepower output of the pump Note: generally, total minor head losses =E h,m, ; hm, = kentrance ; hm, = kpend : 2g hm, = kexit 2g 29 Elev.B kexit 60 m 250 тm Ф 300 тm Ф Elev. A kpend kentrance
Water at 20°C is transported from Tank 1 to Tank 2 at a rate of 0.5m 3 /s via a copperpipe of length 4m and diameter 0.1m. Consider minor losses of a sharp-edged pipe inlet and exit as wellas a fully open globe valve. Determine the following:a) head loss due to friction, hf, through the pipe (estimate hf with Darcy-Weisbach and f with MoodyChart)b) the total head loss, h L, from Tank 1 to Tank 2
0105 Water at 40 °C is pumped from an open tank through 200 m of 50-mm-diameter smooth horizontal pipe as shown in Figure 1 and discharges into the atmosphere with a velocity of 3 m/s. Minor losses are negligible. (a) If the efficiency of the pump is 70%, how much power is being supplied to the pump? (b) What is the NPSHA at the pump inlet? Neglect losses in the short section of pipe connecting the pump to the tank. Assume standard atmospheric pressure. Note: for smooth pipe, friction factor, f = 0.0152 and at 40 °C. kinematic viscosity Temperature (°C) Water vapor pressure (N/m²) Specific weight (N/m³) (m²/s) 6.58 x 10-7 40 7.376 x 10³ 9.731 x 10³ T 3 m ! PUMP 9.731* Diameter = 50 mm Length 200 m e Figure 1
A 250 mm diameter and 3 km long straight pipe connects two reservoirs of water surface elevations 135.00 m and 60.00 m. A 1.5 km long, 300 mm diameter pipe is laid parallel to 250 mm diameter pipe from its mid-point to the lower reservoir. Neglecting minor losses and assuming friction factor as 0.02 for both the pipes. Find the original discharge and the increased discharge
1. Water flows at a rate of 0.020 m3/s from reservoir A to reservoir B through three %3D concrete pipes connected in series, as shown. Find the difference in water surface elevation in the reservoirs. Use f = 0.026 for all pipes. Neglect minor losses. A Water 1000 m, 160-mm diameter 1600 m, 200-mm diameter 850 m, 180-mm diameter Water
A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The sucLon pipe is 350mm in diameter and 12m in length and the delivery pipe is 550mm in diameter and 40m in length. Calculate:(a) The maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa (gauge) (b) the energy to be supplied by the pump per unit mass of water transferred (c) The input power required by the pump, which is 60 % efficient
A water pump is used to pump the water to a large water tank as shown in Figure. The free surfaces of both water tanks are under atmospheric pressure. Dimensions and local losses are given below. The flow rate of the pump is determined as 16.2 L/min. Calculate the required manometric head of the pump and the required motor power if the total efficiency is 76.2 percent. The water at 10oC. density r = 996.2 kg/m3, dynamic viscosity µ = 1.362x10-3kg /ms. z2-z1 = 7.62 m (height difference), D = 2.62 cm (pipe diameter), L = 176.2 m (total pipe length), ɛ = 0.2562 mm (pipe roughness value) Local loss coefficients: KL,inlet = 0.562 (pipe inlet) KL,valve = 16.2 (valve), KL,elbow = 0.9262 (there are 5 elbows totally in pipe line), KL,outlet = 1.0562 (pipe outlet).
Water is pumped between two reservoirs in a pipeline with the following characteristics; (d= 300mm, L= 70m, /= 0.025, minor loss coefficient: YK=2.5). The pump performance curve is approximated by the equation: H,=22.9-650° Where H, is in meters and Q is in m's. Determine the discharge Q and pump head A when two pumps in series are used for total static head (4Z=25m).
Water at 20°C is being pumped from tank 1 to tank 2 with given conditions. Calculate the power of pump used in the system. (Both tanks are open to atmosphere). Volume flow rate = 10L/s Pipe material = cast iron
The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3/hour. The length of the pipe is 35m and there are 2 elbows. Calculate the pump power requirement. The properties of the solution are density 975 kg/m3 and viscosity 4x 10-4 Pa s. a. Reynolds number = b. Energy Loss along a straight pipe = J/kg. c. Energy Loss in turns = J/kg. d. Total energy to overcome friction = J/kg. e. Energy to raise water to height = J/kg. f. Theoretical energy requirement of the pump kg ethanol/second = J/kg. g. Actual pump power requirement = watt.
Water from a reservoir passes over a dam through a turbine and discharges from a 70-cm ID pipe at a point 95 m below the reservoir surface. The turbine delivers 0.950 MW. Calculate the required flow of water in m3/min if friction is neglected. If friction were included would a higher or lower flow rate be required? (Note: The equation you will solve in this problem has multiple roots. Find a solution less than 1.0 m3/s.) V=___m^3/min?
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