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QUESTION3 25 marks (allow 30 minutes) The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs. A pump transports a constant flow rate of Q 0.1 m3/s of water from reservoi...


QUESTION3 25 marks (allow 30 minutes) The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs. A pump
Complete the following a) In your exam booklet (with the white pages), sketch the pipeline system and draw in the total head
QUESTION3 25 marks (allow 30 minutes) The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs. A pump transports a constant flow rate of Q 0.1 m3/s of water from reservoir A to reservoir B. At four sections the pipe has bends and the roughness of the pipe is ks 1.5 mm. The pipe has a diameter D 34 cm and a total length L = 500 m. The water level in reservoir B is Δh-4.67 m above the water level in reservoir A (Figure 3, Top) Valve Pump Reservoir A Pipe 500 m long k, 1.5 mm Diameter 34 cm 0.8 coefficient 0,7 K 0.6 Loss 0.5 0,3 0.2 70% 8% 60% 50% Half open 90% 100% Fully open Figure 3 (Top) Side view of the pipe system; (Bottom) Loss coefficients (Kt) for valve
Complete the following a) In your exam booklet (with the white pages), sketch the pipeline system and draw in the total head line and the hydraulic grade line. Highlight the sections with local losses. [6 marks] Using the provided diagram with loss coefficients for the valve (Figure 3, Bottom), calculate the required head of the pump in the pipeline system if the valve is fully open. You can assume local loss coefficients of the bends and at the inlet to be KBend 0.5 and Kinlet 0.5 respectively. [9 marks] Assuming that the flow in the pipe system is fully developed, sketch the velocity profile of a pipe cross-section in your exam booklet (with the white pages) including the maximum and mean flow velocities. No calculations are required. [4 marks b) c) d Assuming that the flow in the pipe system is fully developed, calculate the viscous 8. Use the pipe and discharge parameters provided above. (6 sublayer thickness marks]
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(Hi) frction head Loss) 5 velocity su ттрґ TTX 0.34 kinematic viscosity C ง)- ,0-6 ทั้ Reynolds No.- D 1.1 X 0.34 Rel ative28 Kexit - 1.0 2x9.8 3.62 x(1-1.. = 0.223 m 0 2X9.dl0.06 ΔΗ 0.03m v 006 0.o3m TEL HGL LerH» enon BRTdA exit Pump Valve 22. Vav Re yooo 8. = 11.gx O- O.OC 68 0113 nm

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QUESTION3 25 marks (allow 30 minutes) The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs. A pump transports a constant flow rate of Q 0.1 m3/s of water from reservoi...
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