Experiment_3 - Fluid Mechanics (CLD 10603) Experiment 3:...

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Unformatted text preview: Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Experiment 3 Series and Parallel Pump Objectives To observe the differences between single, series and parallel pump operation. To determine the single, series and parallel pump characteristic curves. Overview A pump can serve to move liquid, as in a cross country pipeline, to lift liquid as from a well or to the top of a tall building; or to put fluid under pressure as in a hydraulic brake. In chemical plants and refineries pumps transfer or circulate oil and a great variety of fluids. General Start ‐ Up Procedures Before conducting any experiment, it is necessary to do the following checking to avoid any misuse and malfunction of equipment. 1. Fill sump tank with tap water. Water level can be checked using the viewing window. 2. Check whether the Emergency‐Off switch is released. 3. Switch on main power switch. 4. Open flow adjustment valve. 5. Switch on pump. 1 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Experimental Procedures Experiment 1 : Single Pump 1. 2. 3. 4. Figure 1: Configuration of a Single Pump Connect the stop‐cocks as shown in Fig. 1 (handle parallel to the pipe – valve open, handle perpendicular to the pipe – valve closed). Switch on pump 1 (9) with the main switch on the switchbox (11); pump 2 must remain off! Set the desired volumetric flow V with the drain cock (8); ensure continuous water inflow into the reservoir. Record measured values, (Refer Table 1): ‐ on the intake side of the pump (13) P Suction P Delivery ‐ on the delivery side of the pump (14) V ‐ Volumetric flow Note: To determine volumetric flow rate close the outlet valve. Use stopwatch to establish time required for raising the level in the volumetric tank in 1 minute. Repeat with five other different volumetric flows V. 2 5. Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Experiment 2 : Series Configuration of Two Pumps Figure 2: Series Configuration 1. 2. 3. 4. Connect the stop‐cocks as shown in Fig. 2. Switch on both pumps (9, 10) with the main switch on the switchbox (11). Set the desired volumetric flow V with the drain cock (8); ensure continuous water inflow into the reservoir. Record measured values, (Refer Table 2): ‐ on the intake side of pump 1 (13) PSuction1 PDelivery1 ‐ on the delivery side of pump 1(14) P Suction 2 ‐ on the intake side of pump 2 (15) PDelivery2 ‐ on the delivery side of pump 2 (16) V ‐ Volumetric flow Repeat with five other different volumetric flows V. 5. 3 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Experiment 3 : Parallel Configuration of Two Pumps Figure 3: Parallel Configuration 1. 2. 3. 4. Connect the stop‐cocks as shown in Fig. 3. Switch on both pumps (9, 10) with the main switch on the switchbox (11). Set the desired volumetric flow V with the drain cock (8); ensure continuous water inflow into the reservoir. Record measured values, (Refer Table 3): PSuction1 ‐ on the intake side of pump 1 (13) PDelivery1 ‐ on the delivery side of pump 1(14) ‐ on the intake side of pump 2 (15) P Suction 2 PDelivery2 ‐ on the delivery side of pump 2 (16) P Outflow ‐ at the outflow (17) V ‐ Volumetric flow Repeat with five other different volumetric flows V. 5. 4 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Results Volumetric Flow, V (L/min) P Suction (bar) P Delivery (bar) Volumetric Flow, V (L/min) Table 1: Single Pump Pump 1 Pump 2 P Delivery 1 P Suction 2 P Delivery 2 P Suction 1 (bar) (bar) (bar) (bar) Table 2: Series Configuration of Two Pumps Volumetric Flow, V (L/min) Pump 1 Pump 2 P Delivery 1 P Suction 2 P Delivery 2 P Suction 1 (bar) (bar) (bar) (bar) Table 3: Parallel Configuration of Two Pumps P Outflow (bar) 5 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Plot the pump characteristic curve for each configuration. (It is advisable to plot all three curves in one graph). Where the vertical axis: Single Pump : ΔP = P Delivery – P Suction : ΔP = P Delivery 2 – P Suction 1 : ΔP = P Outflow – P Suction 1 Series Configuration Parallel Configuration While the horizontal axis is the respective volumetric flow rate 6 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Discussion Discuss and compare the characteristic curves plotted. 7 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Tutorial 1. 2. Sketch pumps in parallel configuration. Sketch pumps in series configuration. 8 Fluid Mechanics (CLD 10603) Experiment 3: Series and Parallel Pump Conclusion References 1. White, F.M. Fluid Mechanics 4th Ed. McGraw Hill 2. McCabe, W.L., Smith, J.C and Harriot Unit Operations of Chemical Engineering 5th Ed. McGraw Hill 3. John F. Douglas (2001). Fluid Mechanics. 4th Edition , Prentice Hall 4. Joseph B. Franzini (2002). Fluid Mechanics. 10th Ed. McGrawHill 5. Noel de Nevers (1991). Fluid Mechanics for Chemical Engineers. 2nd Ed. McGraw Hill 6. John A. Roberson (2001). Engineering Fluid Mechanics. Wiley 9 ...
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This note was uploaded on 05/08/2011 for the course ACCOUNTING 121210 taught by Professor Sdasdas during the Spring '10 term at Albany College of Pharmacy and Health Sciences.

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