If the head loss h in a pipe network carrying a flow Q may be taken...
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If the head loss h in a pipe network carrying a flow Q may be taken as KQ³ show that the head correction factor in an iterative loop balance calculation for a network of pipes is: b) A three-loop network is shown in Figure Question 2. Water is supplied to the network at nodes A and C, while the network supports demands for water at nodes B,D and E. The friction head loss coefficient "K" and the elevation of each node above the datum are given in Tables Question 2a & 2b. 80 -- (2)/25 (1/0) (ΣΗ, ), i) Use two iterations of the Hardy-Cross method of solution to estimate the water flow distribution in the pipe network. ii) If the pressure head () at node D is required to be at least 5m. P.g Pipe K(s/m) Calculate the minimum head requirements at A and C that will enable this requirement to be met. Node Elevation (m) 200 l/s A AB BC 600 600 A 1 B 4 E DE 400 Table Question 2a CD 300 с 2 3 Table Question 2b 100 l/s D B 150 l/s AE 400 (6 marks) E N m 2 250 l/s BE 300 BD 420 300 l/s If the head loss h in a pipe network carrying a flow Q may be taken as KQ³ show that the head correction factor in an iterative loop balance calculation for a network of pipes is: b) A three-loop network is shown in Figure Question 2. Water is supplied to the network at nodes A and C, while the network supports demands for water at nodes B,D and E. The friction head loss coefficient "K" and the elevation of each node above the datum are given in Tables Question 2a & 2b. 80 -- (2)/25 (1/0) (ΣΗ, ), i) Use two iterations of the Hardy-Cross method of solution to estimate the water flow distribution in the pipe network. ii) If the pressure head () at node D is required to be at least 5m. P.g Pipe K(s/m) Calculate the minimum head requirements at A and C that will enable this requirement to be met. Node Elevation (m) 200 l/s A AB BC 600 600 A 1 B 4 E DE 400 Table Question 2a CD 300 с 2 3 Table Question 2b 100 l/s D B 150 l/s AE 400 (6 marks) E N m 2 250 l/s BE 300 BD 420 300 l/s
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Cost Management Accounting and Control
ISBN: 978-0324559675
6th Edition
Authors: Don R. Hansen, Maryanne M. Mowen, Liming Guan
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