V V Q H 300 M Valve 12 Pipe 800 M Long Kg 2 Mm Diameter 50 Cm Reservoir 2 Reservoir 1 0 8 Loss Coefficient 0 7 1 (126.16 KiB) Viewed 43 times
V v Q h = 300 m Valve | 12 Pipe: 800 m long kg = 2 mm Diameter = 50 cm Reservoir 2 Reservoir 1 0,8 Loss coefficient 0.7 KL [-] 0,6 0,5 0.4 0,3 0,2 0.1 80% 0 30% 40% 50% 60% 70% 90% 100% Half open Fully open valve valve Figure 4. Upper figure: Conceptional drawing of the pipeline system between the two reservoirs (not to scale); lower figure: loss coefficient curve for various valve openings.
QUESTION 4: 25 MARKS As shown in Figure 4 below, water flows at a rate of Q = 1.5 m3/s between reservoir 1 with water elevation h1 = 300 m and reservoir 2 with unknown water elevation h2, via a pipeline of length L = 800 m, diameter D = 0.5 m and roughness ks = 2 mm. All local losses must also be considered including the local loss of an 80% open valve. The local loss curve for various valve openings has been supplied in the figure below. Complete the following: a) For the provided values, calculate the water elevation in reservoir 2 (hz). [8 MARKS] b) Sketch the pipeline system together with the hydraulic grade line (HGL) and total headline (THL) along the full system. [4 MARKS]
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