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...by opening the gate valve for dark blue pipe and closing the globe valve for the light blue pipe. 2. Measure the flow rate and the head loss between tapping 3 and 4 on the dark blue pipe. Repeat the experiment for four different flow rates. Record the distances between the tapping. 3. Prime the pipe network with water by opening the globe valve for light blue pipe and closing the gate valve for the dark blue pipe. 4. Measure the flow rate and the head loss between tapping 9 and 10 and between 13 and 14 on the light blue pipe. Repeat the experiment for four different flow rates. Record the distances between the tapping 5.Data Collection: Table-1 shows the complete results of the experimental measurements. Reading h1(mm) h2(mm) V(liters) t(s) D pipe(mm) Length(cm) Q(L/s) Head losses Straight pipe 1 720 45 5 13.66 13.6 91.44 0.36 0.675 2 720 120 5 15.39 13.6 91.44 0.32 0.600 3 745 225 5 16.70 13.6 91.44 0.299 0.520 4 760 370 5 18.63 13.6 91.44 0.268 0.390 150 mm bend 1 680 35 5 17.30 13.6 0.289 0.645 2 690 70 5 17.49 13.6 0.285 0.620 3 700 120 5 18.25 13.6 0.273 0.580 4 724 262 5 18.52 13.6 0.269 0.462 Table-1 5 6.Results & Calculations: For the sake of exploiting results, let’s study the 2nd measurement at the straight pipe. Flow equation =V.A Therefore, the velocity V in the pipe = V = Q/A = 0.36 (l/s) / 0.000145 m² = 2.48 m/s. Applying the principle of the energy equation fo the same measurement along streamline 1-à2, we get : Implies that, = 0.675. And then we will apply equation (1) to get f , and we can check f in Moody’s Diagram (fig-1), all the results are tabulated in table-2. therefore = 0.675. According to the Darcy – Weisbach equation: We find and Reynolds Number then we can check in the Moody’s diagram The results for V,Re,and for 4 different readings are shown in table 2,below. Table-2 shows the calculation of the friction factor for the straight pipe Readings Velocity (m/s) Reynolds Number f (calculated) f (Moody’s Diagram) 1 2.48 33,728 0.032 0.0029 2 2.20 29,920 0.036 0.0029 3 2.06 28,016 0.035 0.0028 4 1.84 25,024 0.033 0.0028 Table-2 6 Moody’s diagram ------------------------------------------------------------------------------------------------------------ 7 Calculation of Kb: After finding V in the 150mm radius bend through tracking 4 readings, we use Darcy – Weisbach equation for minor losses: to find Kb. Below, table 3 shows all the exploited results. Table-3 shows the calculations for Kb for the 150 mm radius bend. Readings Velocity (m/s) Kb calculated Kb from table 1 1.99 0.319 0.35 2 1.96 0.316 0.35 3 1.88 0.321 0.35 4 1.85 0.264 0.35 Table-3 Below, there’s a tabulated form of results showing the mean Kb of the 4 readings,needed for the comparison between the actual Kb and the theoretical Kb. Table-4 Shows the value of average Kb Reading 1 2 3 4 Mean value Kb 0.319 0.316 0.321 0.264 0.305 Table-4 8 7.Analysis and Discussion: After analyzing and comparing our results reffering to the different trials we have performed we concluded hat the head losses obtained 1st reading for the straight pipe and 1st reading for the 90° bend were slightly imprecise. In addition,our final values for and Kb were conducted as the average of the for trials;as well as the values of the head loss. We laso noticed that the values of the head losses are not so large, relatively; that is ,bec...