Q3: A supply tank is connected to a water desalination unit by a smooth mild steel pipeline consists of 200 mm diameter pipe of length 20 m joined to a 100 mm diameter and 100 m long pipe followed by 50 mm diameter pipe of 10 m length. The pipeline discharges 0.5 m'/s to atmosphere 8 m below the surface level of the water in the tank. Estimate the supply pressure required at this flow rate. The kinematic viscosity of the water may be taken to be 1.14 x 10 m/s.

Q3: A supply tank is connected to a water desalination unit by a smooth mild steel pipeline consists of 200 mm diameter pipe of length 20 m joined to a 100 mm diameter and 100 m long pipe followed by 50 mm diameter pipe of 10 m length. The pipeline discharges 0.5 m'/s to atmosphere 8 m below the surface level of the water in the tank. Estimate the supply pressure required at this flow rate. The kinematic viscosity of the water may be taken to be 1.14 x 10 m/s.

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

A pump with a 600 mm diameter suction pipe and a 500 mm diameter discharge pipe is to deliver 20,000 liters per minute of 15.6 degree Celsius water. Calculate the pump head in meters if the suction gage is 7.5 cm below pump centerline and reads 29.92 in Hg vaccum and discharges gage is 45 cm above the pump centerline and reads 75 kPa.
Oil, with a vapor pressure of 20 kPa, is delivered througha pipeline by equally spaced pumps, each of which increases the oilpressure by 1.3 MPa. Friction losses in thepipe are 150 Pa per meter of pipe. What is the maximumpossible pump spacing to avoid cavitation of the oil?
liquid (density 800kg/m3, viscosity 10−3 kg/ms) has to be supplied at a mean speed of 2m/s through a pipe of diameter 12.5mm with a surface roughness equivalent to that for structural steel. What is the magnitude of the pressure gradient necessary to achieve this flow? Your answer should have a positive sign and be to the nearest 10 Pa/m. You may wish to use the Moody diagram.
A petroleum product of viscosity 0.5 m Ns/m2 and density 700 kg/m3 is pumped througha pipe of 0.15 m diameter to storage tanks situated 100 m away. The pressure drop alongthe pipe is 70 kN/m2. The pipeline has to be repaired and it is necessary to pump the liquid by an alternative route consisting of 70 m of 200 mm pipe followed by 50 m of 100 mm pipe. If the existing pump is capable of developing a pressure of 300 kN/m2, will it be suitable for use during the period required for the repairs? Calculate the pressure drop for the alternative pipe system. Take the roughnessof the pipe surface as 0.05 m
A pump is being used to transport a liquid food product (density = 1000 Kg/m3, viscosity= 1.2 x 10 -3 Pa-s) from a holding tank to a filling machine at a mass flow rate of 2 Kg/s. The liquid level at the holding tank is 5 m above the pump, and the filling machine is 10 m above the pump. There is 100 m of 2 inch nominal diameter sanitary pipeline (assume: commercial steel) between the holding tank and the filling machine with one open glove valve and three medium sweep 90oelbows in the system. Determine the theoretical power requirement of the pump if the efficiency is 75%. Answer: 234 Watts. Show the solution.
A 5-mm-diameter capillary tube is used as a viscometer foroils. When the flow rate is 0.071 m3/h, the measured pressuredrop per unit length is 375 kPa/m. Estimate the viscosityof the fluid. Is the flow laminar? Can you also estimate thedensity of the fluid?
A liquid, sg = 12.5, is flowing in a 30mm-diameter pipe at 5 m/s. What is the weight flux in kN/s?
The diameter of a pipe changes gradually from 75 mm at a point A, 6 m above datum, to 150 mm at B, 3 m above datum. The pressure at A is 103 kPa and the velocity of flow is 3.6 m/s. Neglecting losses, with the aid of a neat sketch, determine the pressure at B
A bicycle tire is fi lled with air at an absolute pressure of169.12 kPa, and the temperature inside is 30.0 °C. Supposethe valve breaks, and the air starts to exhaust out of the tireinto the atmosphere (pa = 100 kPa absolute and Ta =20.0 °C). The valve exit is 2.00 mm in diameter and is thesmallest cross-sectional area of the entire system. Frictionallosses can be ignored here; one-dimensional isentropicflow is a reasonable assumption. (a) Find the Machnumber, velocity, and temperature at the exit plane of thevalve (initially). (b) Find the initial mass flow rate out ofthe tire. (c) Estimate the velocity at the exit plane using theincompressible Bernoulli equation. How well does thisestimate agree with the “exact” answer of part (a)? Explain.
Fluid Mechanics Laboratory Experiment No.5 Pitot Static Tube The Discussion 2 — When the pitot tube is moved vertically inside the pipeline, why does it yield different flow velocities? Explain 3 — If the pitot tube is not perfectly aligned with the current direction, it produces errors in the measurements of static pressure and total (pool) pressure, Why? Explain. 4 — When flow velocity increases, it alters the shape of the flow velocity profile. Clarify 5 — What are the advantages and disadvantages of the pitot static tube. 6 — Does altering fluid temperature influences the results obtained by pitot static tube? clarify
Nitrogen gas under a pressure pn = 15 psig is used for pumping kerosene at 25°C (density = 816 kg/m3, viscosity = 1.81 cP) through an elevation increase of 6 m. If there is an effective length of 45 m of nominal 2-in. schedule No. 40 pipe (commercial steel) between the two tanks, what is the flow rate of kerosene? Neglect exit kinetic-energy effects.
SAE 10 oil at 20°C flows through the 4-cm-diameter vertical pipe of Fig. P6.30. For the mercury manometer reading h = 42 cm shown, (a) calculate the volume flow rate in m3/h and (b) state the direction of flow.