How do I calculate the friction heads, indicated with the RED ARROW Given the pump characteristics as follows, determine the pump efficiency andpower requirement for a pipeline of diameter 300 mm, length 5 km, roughness 0.03mm and a static lift of 10 m. Comment on the suitability of this pump and pipelinecombination.Pump characteristicsDischarge (L/s) 010203040506070Head (m)26.25 24.00 21.75 19.50 17.50 15.00 11.756.75Efficiency (%)28516880858064Solution(a) Determine the pipeline characteristic by finding the frictional losses at the dis-charges given in the earlier table. These are most readily found using the HRScharts or tables.Pipeline characteristicsDischarge (L/s)203040506070Friction head (m)1.352.84.77.259.7513.5Friction+static head (m)11.3512.814.717.2519.7523.5

Given data, Diameter D = 300 mm Length L = 5 km Roughness factor = 0.03

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Engineering

Civil Engineering

How do I calculate the friction heads, indicated with the RED ARROW

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

How do I calculate the friction heads, indicated with the RED ARROW

Given the pump characteristics as follows, determine the pump efficiency and
power requirement for a pipeline of diameter 300 mm, length 5 km, roughness 0.03
mm and a static lift of 10 m. Comment on the suitability of this pump and pipeline
combination.
Pump characteristics
Discharge (L/s) 0
10
20
30
40
50
60
70
Head (m)
26.25 24.00 21.75 19.50 17.50 15.00 11.75
6.75
Efficiency (%)
28
51
68
80
85
80
64
Solution
(a) Determine the pipeline characteristic by finding the frictional losses at the dis-
charges given in the earlier table. These are most readily found using the HRS
charts or tables.
Pipeline characteristics
Discharge (L/s)
20
30
40
50
60
70
Friction head (m)
1.35
2.8
4.7
7.25
9.75
13.5
Friction+static head (m)
11.35
12.8
14.7
17.25
19.75
23.5

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