: +0العنوانsolleнеAm4A 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 bend 0.35, and K exit -0.5), compute the power of the pump.۳/۱۲/۱4.5 mKentrance300 mm dia.15 m Length250 mm dia.75 m Lengthkpendkexit60 mostlar

step 1. Calculate the velocities in each pipe: Velocity in the suction pipe (v1):Area of the suction…

Answered: : +0 العنوان solle не Am 4 A pump draws…

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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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).
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3.
Consider the hydropower schematic shown below with a lake of 70m elevation above a turbine house. Water is running through a 0.3m diameter cast-iron pipeline at 3,000 gallons per minute. Determine the head loss due to frictional effects (i.e., viscous dissipation) Calculate horsepower that can be generated with the turbine system assuming a 40% efficiency. Assume that the turbine outlet is in contact with the open atmosphere.
Water from a reservoir is pumped over a hill through a 450 mm diameter and an absolute pressure of 1.0 kg/cm2 is maintained at the summit. Water discharge is 30 m above the reservoir. The quantity pumped is 0.5 m3/s. Frictional losses in the discharge and suction pipe, and pump is equivalent to 1.5 m. The speed of pump is 800 rpm. Determine the following: a.Water power of the pump b.New value of discharge if the speed of the pump is increased to 1000 rpm c.New value of head if the speed of the pump is increased to 1000 rpm d.New value of power if the speed of the pump is increased to 1000 rpm Please solving using the methodology (Given, requires, schematic diagram, solution and discussion)
This is a fluid machine question. Water reservoir is pumped over a hill through a pipe 450 mm in diameter and a pressure of 98.08 kPa is maintained in the summit water discharge is 30 m above the reservoir. The quantity pumped is 0.50 m3/s. rrictional losses in the discharge and suction pipe of the pump is equivalent to 1.5 m head loss. The speed of the pump is 800 rpm, what amount of energy must be furnished by the pump in kW?
The value of (NPSH) for a pump is given by the manufacturer as 10 ft. Water is being pumped from a reservoir at min atmospheric pressure at a rate of 30 ft /s to a tank at atmospheric pressure. The water level in the reservoir is 5 ft below the pump. If the total head loss in the suction pipe is 5 ft, is the pump safe from cavitation effects? If a 2-in schedule 40 pipe of 150 m length was used downstream of the pump, what is the power delivered to the fluid? You may assume that the friction factor in the pipe is equal to 0.004.
A new pump is required for the water supply system of a high-rise office building. The system requires 0.06 m³/s of water pumped to a reservoir at the top of the tower 340 m above the street. City water pressure at the street-level pump inlet is 400 kPa gage. The piping is to be commercial steel, the overall length is 20 percent greater than the tower height, and there are fittings every 10 m with loss coefficients of 0.2. Determine the minimum diameter required to keep the average water velocity below 3.5 m/s in the pipe. Calculate the pressure rise required across the pump and estimate the minimum power needed to drive the pump.
Water is to be pumped (whose characteristics below) from one large open tank into an apparatus working under a pressure of 2 atm. The pipe diameter is 0.15 m and the pipe length is 61 m. There are minor losses at the entrance, exit and throughout the pipe. The friction factor will be taken as 0.02. JEfficiency of the pump =0.7 Calculate: The flow-rate and shaft-power needed when the pump is operated at 1000 rev/min. The flow rate and the power when the speed of the pump increased by 10%. c) The flow rate and the power when two pump operate at parallel.
The water system in a suburban area consists of an old 200mm pipeline 760m long which conveys water from a pump to a reservoir whose water surface is 107m higher than the pump. VWater is pumped at the rate of 0.07 m/s. Delermine the horsepower saved by replacng the old pipe with a new 260mm plpe. Assume the value off as equat to Neglect osses of head except friction head
Parvinbhai
please explain how to get the friction factor

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