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Petrol is drained from a tank X to tank Y via pipeline A-B (see figure Q3). A pump is then used to pump the petrol from tank Y to tank Z via pipeline C-D. Pipe lengths, diameters and relative heights of the pump and tank levels are as shown in figure Q3.

Petrol is drained from a tank X to tank Y via pipeline A-B (see figure Q3). A pump is then used to pump the petrol from tank Y to tank Z via pipeline C-D. Pipe lengths, diameters and relative heights of the pump and tank levels are as shown in figure Q3.

Elements Of Electromagnetics
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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What's the answer for Q3D and E with working out and answer as you already answered A to C

Section B-Fluid mechanics Petrol is drained from a tank X to tank Y via pipeline A-B (see figure 03). A pump is then used 3. to pump the petrol from tank Y to tank Z via pipeline C-D. Pipe lengths, diameters and relative heights of the pump and tank levels are as shown in figure Q3. The density of the petrol is 760 kg/m and the Fanning friction factor (f) for all the pipes is 0.0075. For pipe A-B the entrance loss at A is 0.51and the exit loss at B is For pipe C-D the entrance loss at Cis 0.5_and the exit loss at D is 2g 24 All valve losses are 0.2 each, Neglect any entrance or exit head losses at the pump and all other pipeline component losses. The velocity in the pipe C-D cannot exceed 1.8 m/s The pump mechanical efficiency is 86% X. Figure Q3 10m A 30 m L3D50 m 20 m 10 m D= 100 mm D= 75 mm L= 50 m Y 5 m B D3D 75 mm L= 10 m 画 pump a) Calculate the rate at which the tank X drains into tank Y (in litres/min). b) Calculate the required pressure (in bar) to be developed across the pump in order to pump the petrol at the maximum rate allowed from tank Y to tank Z c) What is the mechanical power required (in kW) to run the pump at this rate? d) What will be the pressure (in bar) at the inlet to the pump E? e) As the tank Y empties the level will drop. Briefly comment on the effect this will have on the pump suction pressure and flow rate and any problems that might occu ocur.I 1054 words.
Transcribed Image Text:Section B-Fluid mechanics Petrol is drained from a tank X to tank Y via pipeline A-B (see figure 03). A pump is then used 3. to pump the petrol from tank Y to tank Z via pipeline C-D. Pipe lengths, diameters and relative heights of the pump and tank levels are as shown in figure Q3. The density of the petrol is 760 kg/m and the Fanning friction factor (f) for all the pipes is 0.0075. For pipe A-B the entrance loss at A is 0.51and the exit loss at B is For pipe C-D the entrance loss at Cis 0.5_and the exit loss at D is 2g 24 All valve losses are 0.2 each, Neglect any entrance or exit head losses at the pump and all other pipeline component losses. The velocity in the pipe C-D cannot exceed 1.8 m/s The pump mechanical efficiency is 86% X. Figure Q3 10m A 30 m L3D50 m 20 m 10 m D= 100 mm D= 75 mm L= 50 m Y 5 m B D3D 75 mm L= 10 m 画 pump a) Calculate the rate at which the tank X drains into tank Y (in litres/min). b) Calculate the required pressure (in bar) to be developed across the pump in order to pump the petrol at the maximum rate allowed from tank Y to tank Z c) What is the mechanical power required (in kW) to run the pump at this rate? d) What will be the pressure (in bar) at the inlet to the pump E? e) As the tank Y empties the level will drop. Briefly comment on the effect this will have on the pump suction pressure and flow rate and any problems that might occu ocur.I 1054 words.
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