1 answer

Water at 20° flows in pipeline system shown below (Fig. 1) at rate of 32400 Vhr....

Question:

Water at 20° flows in pipeline system shown below (Fig. 1) at rate of 32400 Vhr. Pipe 1 is 15m long and 0.044 m outer diamete

Water at 20° flows in pipeline system shown below (Fig. 1) at rate of 32400 Vhr. Pipe 1 is 15m long and 0.044 m outer diameter and pipe 2 is 100m long and 0.034m outer diameter. The thickness of both pipes is 2mm. Pipe 1 is a ductile iron uncoated pipe and pipe 2 is ductile iron coated pipe. There are totally 4 elbows in the system (two elbows in each pipe) and the elbows are 90° street elbows. All pipes are located on the same elevation. Consider major loss and minor loss for both pipes. 1. Calculate the flow rate and head loss in each pipe (10 marks) 2. Calculate the pressure drop between point A and point Blocated on either sides of the main pipeline (5 marks). Note: Attach your calculation on moody diagram to the solution. This forms part of total mark. Branch 1 Main Pipe B Main Pipe Branch 2 Fig. 1

Answers

Griven :- 1 9o* elbows > 2 Q2 L=25m di= 0.04m 3 L2= 3om dzz0.03m Q= = 32400 l/hr 32.4 m/s Q 1-354/s 2 24 Neglecting Major losQı x4 (1.35-21) Qu) x4 7 %0.0374 Tx6.04)2 Quto2 51.35m/3 Qı = 0.864 mits In Pipe 1 → Q2 = 0.486m/ In Pipe 2 >> (2.) Pressure

1)

Q1=0.864 m3/s

Q2=0.486 m3/s

2)

∆P = 236362 Kpa.

Thank you.

.

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